import firebase from '@firebase/app-compat';
import { Provider, ComponentContainer, Component } from '@firebase/component';
import { onChildMoved, onChildChanged, onChildRemoved, onChildAdded, onValue, off, get, query, limitToFirst, limitToLast, orderByChild, orderByKey, orderByPriority, orderByValue, startAt, startAfter, endAt, endBefore, equalTo, _ReferenceImpl, _QueryImpl, child, set, update, setWithPriority, remove, runTransaction, setPriority, push, OnDisconnect as OnDisconnect$1, connectDatabaseEmulator, refFromURL, ref, goOffline, goOnline, serverTimestamp, increment, _repoManagerDatabaseFromApp, enableLogging as enableLogging$1 } from '@firebase/database';
import { stringify, jsonEval, contains, assert, isNodeSdk, base64, stringToByteArray, Sha1, errorPrefix, validateArgCount, validateCallback, validateContextObject, Deferred, deepCopy, base64Encode, isMobileCordova, safeGet, isAdmin, isValidFormat, isEmpty, isReactNative } from '@firebase/util';
import { Logger, LogLevel } from '@firebase/logger';
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Wraps a DOM Storage object and:
* - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.
* - prefixes names with "firebase:" to avoid collisions with app data.
*
* We automatically (see storage.js) create two such wrappers, one for sessionStorage,
* and one for localStorage.
*
*/
class DOMStorageWrapper {
/**
* @param domStorage_ - The underlying storage object (e.g. localStorage or sessionStorage)
*/
constructor(domStorage_) {
this.domStorage_ = domStorage_;
// Use a prefix to avoid collisions with other stuff saved by the app.
this.prefix_ = 'firebase:';
}
/**
* @param key - The key to save the value under
* @param value - The value being stored, or null to remove the key.
*/
set(key, value) {
if (value == null) {
this.domStorage_.removeItem(this.prefixedName_(key));
}
else {
this.domStorage_.setItem(this.prefixedName_(key), stringify(value));
}
}
/**
* @returns The value that was stored under this key, or null
*/
get(key) {
const storedVal = this.domStorage_.getItem(this.prefixedName_(key));
if (storedVal == null) {
return null;
}
else {
return jsonEval(storedVal);
}
}
remove(key) {
this.domStorage_.removeItem(this.prefixedName_(key));
}
prefixedName_(name) {
return this.prefix_ + name;
}
toString() {
return this.domStorage_.toString();
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* An in-memory storage implementation that matches the API of DOMStorageWrapper
* (TODO: create interface for both to implement).
*/
class MemoryStorage {
constructor() {
this.cache_ = {};
this.isInMemoryStorage = true;
}
set(key, value) {
if (value == null) {
delete this.cache_[key];
}
else {
this.cache_[key] = value;
}
}
get(key) {
if (contains(this.cache_, key)) {
return this.cache_[key];
}
return null;
}
remove(key) {
delete this.cache_[key];
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Helper to create a DOMStorageWrapper or else fall back to MemoryStorage.
* TODO: Once MemoryStorage and DOMStorageWrapper have a shared interface this method annotation should change
* to reflect this type
*
* @param domStorageName - Name of the underlying storage object
* (e.g. 'localStorage' or 'sessionStorage').
* @returns Turning off type information until a common interface is defined.
*/
const createStoragefor = function (domStorageName) {
try {
// NOTE: just accessing "localStorage" or "window['localStorage']" may throw a security exception,
// so it must be inside the try/catch.
if (typeof window !== 'undefined' &&
typeof window[domStorageName] !== 'undefined') {
// Need to test cache. Just because it's here doesn't mean it works
const domStorage = window[domStorageName];
domStorage.setItem('firebase:sentinel', 'cache');
domStorage.removeItem('firebase:sentinel');
return new DOMStorageWrapper(domStorage);
}
}
catch (e) { }
// Failed to create wrapper. Just return in-memory storage.
// TODO: log?
return new MemoryStorage();
};
/** A storage object that lasts across sessions */
const PersistentStorage = createStoragefor('localStorage');
/** A storage object that only lasts one session */
const SessionStorage = createStoragefor('sessionStorage');
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const logClient = new Logger('@firebase/database');
/**
* Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).
*/
const LUIDGenerator = (function () {
let id = 1;
return function () {
return id++;
};
})();
/**
* Sha1 hash of the input string
* @param str - The string to hash
* @returns {!string} The resulting hash
*/
const sha1 = function (str) {
const utf8Bytes = stringToByteArray(str);
const sha1 = new Sha1();
sha1.update(utf8Bytes);
const sha1Bytes = sha1.digest();
return base64.encodeByteArray(sha1Bytes);
};
const buildLogMessage_ = function (...varArgs) {
let message = '';
for (let i = 0; i < varArgs.length; i++) {
const arg = varArgs[i];
if (Array.isArray(arg) ||
(arg &&
typeof arg === 'object' &&
// eslint-disable-next-line @typescript-eslint/no-explicit-any
typeof arg.length === 'number')) {
message += buildLogMessage_.apply(null, arg);
}
else if (typeof arg === 'object') {
message += stringify(arg);
}
else {
message += arg;
}
message += ' ';
}
return message;
};
/**
* Use this for all debug messages in Firebase.
*/
let logger = null;
/**
* Flag to check for log availability on first log message
*/
let firstLog_ = true;
/**
* The implementation of Firebase.enableLogging (defined here to break dependencies)
* @param logger_ - A flag to turn on logging, or a custom logger
* @param persistent - Whether or not to persist logging settings across refreshes
*/
const enableLogging = function (logger_, persistent) {
assert(!persistent || logger_ === true || logger_ === false, "Can't turn on custom loggers persistently.");
if (logger_ === true) {
logClient.logLevel = LogLevel.VERBOSE;
logger = logClient.log.bind(logClient);
if (persistent) {
SessionStorage.set('logging_enabled', true);
}
}
else if (typeof logger_ === 'function') {
logger = logger_;
}
else {
logger = null;
SessionStorage.remove('logging_enabled');
}
};
const log = function (...varArgs) {
if (firstLog_ === true) {
firstLog_ = false;
if (logger === null && SessionStorage.get('logging_enabled') === true) {
enableLogging(true);
}
}
if (logger) {
const message = buildLogMessage_.apply(null, varArgs);
logger(message);
}
};
const logWrapper = function (prefix) {
return function (...varArgs) {
log(prefix, ...varArgs);
};
};
const error = function (...varArgs) {
const message = 'FIREBASE INTERNAL ERROR: ' + buildLogMessage_(...varArgs);
logClient.error(message);
};
const warn = function (...varArgs) {
const message = 'FIREBASE WARNING: ' + buildLogMessage_(...varArgs);
logClient.warn(message);
};
/**
* Returns true if data is NaN, or +/- Infinity.
*/
const isInvalidJSONNumber = function (data) {
return (typeof data === 'number' &&
(data !== data || // NaN
data === Number.POSITIVE_INFINITY ||
data === Number.NEGATIVE_INFINITY));
};
const executeWhenDOMReady = function (fn) {
if (isNodeSdk() || document.readyState === 'complete') {
fn();
}
else {
// Modeled after jQuery. Try DOMContentLoaded and onreadystatechange (which
// fire before onload), but fall back to onload.
let called = false;
const wrappedFn = function () {
if (!document.body) {
setTimeout(wrappedFn, Math.floor(10));
return;
}
if (!called) {
called = true;
fn();
}
};
if (document.addEventListener) {
document.addEventListener('DOMContentLoaded', wrappedFn, false);
// fallback to onload.
window.addEventListener('load', wrappedFn, false);
// eslint-disable-next-line @typescript-eslint/no-explicit-any
}
else if (document.attachEvent) {
// IE.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
document.attachEvent('onreadystatechange', () => {
if (document.readyState === 'complete') {
wrappedFn();
}
});
// fallback to onload.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
window.attachEvent('onload', wrappedFn);
// jQuery has an extra hack for IE that we could employ (based on
// http://javascript.nwbox.com/IEContentLoaded/) But it looks really old.
// I'm hoping we don't need it.
}
}
};
/**
* Minimum key name. Invalid for actual data, used as a marker to sort before any valid names
*/
const MIN_NAME = '[MIN_NAME]';
/**
* Maximum key name. Invalid for actual data, used as a marker to sort above any valid names
*/
const MAX_NAME = '[MAX_NAME]';
/**
* Compares valid Firebase key names, plus min and max name
*/
const nameCompare = function (a, b) {
if (a === b) {
return 0;
}
else if (a === MIN_NAME || b === MAX_NAME) {
return -1;
}
else if (b === MIN_NAME || a === MAX_NAME) {
return 1;
}
else {
const aAsInt = tryParseInt(a), bAsInt = tryParseInt(b);
if (aAsInt !== null) {
if (bAsInt !== null) {
return aAsInt - bAsInt === 0 ? a.length - b.length : aAsInt - bAsInt;
}
else {
return -1;
}
}
else if (bAsInt !== null) {
return 1;
}
else {
return a < b ? -1 : 1;
}
}
};
const requireKey = function (key, obj) {
if (obj && key in obj) {
return obj[key];
}
else {
throw new Error('Missing required key (' + key + ') in object: ' + stringify(obj));
}
};
const ObjectToUniqueKey = function (obj) {
if (typeof obj !== 'object' || obj === null) {
return stringify(obj);
}
const keys = [];
// eslint-disable-next-line guard-for-in
for (const k in obj) {
keys.push(k);
}
// Export as json, but with the keys sorted.
keys.sort();
let key = '{';
for (let i = 0; i < keys.length; i++) {
if (i !== 0) {
key += ',';
}
key += stringify(keys[i]);
key += ':';
key += ObjectToUniqueKey(obj[keys[i]]);
}
key += '}';
return key;
};
/**
* Splits a string into a number of smaller segments of maximum size
* @param str - The string
* @param segsize - The maximum number of chars in the string.
* @returns The string, split into appropriately-sized chunks
*/
const splitStringBySize = function (str, segsize) {
const len = str.length;
if (len <= segsize) {
return [str];
}
const dataSegs = [];
for (let c = 0; c < len; c += segsize) {
if (c + segsize > len) {
dataSegs.push(str.substring(c, len));
}
else {
dataSegs.push(str.substring(c, c + segsize));
}
}
return dataSegs;
};
/**
* Apply a function to each (key, value) pair in an object or
* apply a function to each (index, value) pair in an array
* @param obj - The object or array to iterate over
* @param fn - The function to apply
*/
function each(obj, fn) {
for (const key in obj) {
if (obj.hasOwnProperty(key)) {
fn(key, obj[key]);
}
}
}
/**
* Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)
* I made one modification at the end and removed the NaN / Infinity
* handling (since it seemed broken [caused an overflow] and we don't need it). See MJL comments.
* @param v - A double
*
*/
const doubleToIEEE754String = function (v) {
assert(!isInvalidJSONNumber(v), 'Invalid JSON number'); // MJL
const ebits = 11, fbits = 52;
const bias = (1 << (ebits - 1)) - 1;
let s, e, f, ln, i;
// Compute sign, exponent, fraction
// Skip NaN / Infinity handling --MJL.
if (v === 0) {
e = 0;
f = 0;
s = 1 / v === -Infinity ? 1 : 0;
}
else {
s = v < 0;
v = Math.abs(v);
if (v >= Math.pow(2, 1 - bias)) {
// Normalized
ln = Math.min(Math.floor(Math.log(v) / Math.LN2), bias);
e = ln + bias;
f = Math.round(v * Math.pow(2, fbits - ln) - Math.pow(2, fbits));
}
else {
// Denormalized
e = 0;
f = Math.round(v / Math.pow(2, 1 - bias - fbits));
}
}
// Pack sign, exponent, fraction
const bits = [];
for (i = fbits; i; i -= 1) {
bits.push(f % 2 ? 1 : 0);
f = Math.floor(f / 2);
}
for (i = ebits; i; i -= 1) {
bits.push(e % 2 ? 1 : 0);
e = Math.floor(e / 2);
}
bits.push(s ? 1 : 0);
bits.reverse();
const str = bits.join('');
// Return the data as a hex string. --MJL
let hexByteString = '';
for (i = 0; i < 64; i += 8) {
let hexByte = parseInt(str.substr(i, 8), 2).toString(16);
if (hexByte.length === 1) {
hexByte = '0' + hexByte;
}
hexByteString = hexByteString + hexByte;
}
return hexByteString.toLowerCase();
};
/**
* Used to detect if we're in a Chrome content script (which executes in an
* isolated environment where long-polling doesn't work).
*/
const isChromeExtensionContentScript = function () {
return !!(typeof window === 'object' &&
window['chrome'] &&
window['chrome']['extension'] &&
!/^chrome/.test(window.location.href));
};
/**
* Used to detect if we're in a Windows 8 Store app.
*/
const isWindowsStoreApp = function () {
// Check for the presence of a couple WinRT globals
return typeof Windows === 'object' && typeof Windows.UI === 'object';
};
/**
* Used to test for integer-looking strings
*/
const INTEGER_REGEXP_ = new RegExp('^-?(0*)\\d{1,10}$');
/**
* For use in keys, the minimum possible 32-bit integer.
*/
const INTEGER_32_MIN = -2147483648;
/**
* For use in kyes, the maximum possible 32-bit integer.
*/
const INTEGER_32_MAX = 2147483647;
/**
* If the string contains a 32-bit integer, return it. Else return null.
*/
const tryParseInt = function (str) {
if (INTEGER_REGEXP_.test(str)) {
const intVal = Number(str);
if (intVal >= INTEGER_32_MIN && intVal <= INTEGER_32_MAX) {
return intVal;
}
}
return null;
};
/**
* Helper to run some code but catch any exceptions and re-throw them later.
* Useful for preventing user callbacks from breaking internal code.
*
* Re-throwing the exception from a setTimeout is a little evil, but it's very
* convenient (we don't have to try to figure out when is a safe point to
* re-throw it), and the behavior seems reasonable:
*
* * If you aren't pausing on exceptions, you get an error in the console with
* the correct stack trace.
* * If you're pausing on all exceptions, the debugger will pause on your
* exception and then again when we rethrow it.
* * If you're only pausing on uncaught exceptions, the debugger will only pause
* on us re-throwing it.
*
* @param fn - The code to guard.
*/
const exceptionGuard = function (fn) {
try {
fn();
}
catch (e) {
// Re-throw exception when it's safe.
setTimeout(() => {
// It used to be that "throw e" would result in a good console error with
// relevant context, but as of Chrome 39, you just get the firebase.js
// file/line number where we re-throw it, which is useless. So we log
// e.stack explicitly.
const stack = e.stack || '';
warn('Exception was thrown by user callback.', stack);
throw e;
}, Math.floor(0));
}
};
/**
* Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.
*
* It is removed with clearTimeout() as normal.
*
* @param fn - Function to run.
* @param time - Milliseconds to wait before running.
* @returns The setTimeout() return value.
*/
const setTimeoutNonBlocking = function (fn, time) {
const timeout = setTimeout(fn, time);
// eslint-disable-next-line @typescript-eslint/no-explicit-any
if (typeof timeout === 'object' && timeout['unref']) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
timeout['unref']();
}
return timeout;
};
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* An immutable object representing a parsed path. It's immutable so that you
* can pass them around to other functions without worrying about them changing
* it.
*/
class Path {
/**
* @param pathOrString - Path string to parse, or another path, or the raw
* tokens array
*/
constructor(pathOrString, pieceNum) {
if (pieceNum === void 0) {
this.pieces_ = pathOrString.split('/');
// Remove empty pieces.
let copyTo = 0;
for (let i = 0; i < this.pieces_.length; i++) {
if (this.pieces_[i].length > 0) {
this.pieces_[copyTo] = this.pieces_[i];
copyTo++;
}
}
this.pieces_.length = copyTo;
this.pieceNum_ = 0;
}
else {
this.pieces_ = pathOrString;
this.pieceNum_ = pieceNum;
}
}
toString() {
let pathString = '';
for (let i = this.pieceNum_; i < this.pieces_.length; i++) {
if (this.pieces_[i] !== '') {
pathString += '/' + this.pieces_[i];
}
}
return pathString || '/';
}
}
function pathGetFront(path) {
if (path.pieceNum_ >= path.pieces_.length) {
return null;
}
return path.pieces_[path.pieceNum_];
}
/**
* @returns The number of segments in this path
*/
function pathGetLength(path) {
return path.pieces_.length - path.pieceNum_;
}
function pathPopFront(path) {
let pieceNum = path.pieceNum_;
if (pieceNum < path.pieces_.length) {
pieceNum++;
}
return new Path(path.pieces_, pieceNum);
}
/**
* @returns True if there are no segments in this path
*/
function pathIsEmpty(path) {
return path.pieceNum_ >= path.pieces_.length;
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* True for invalid Firebase paths.
* Allows '/' in paths.
*/
const INVALID_PATH_REGEX_ = /[\[\].#$\u0000-\u001F\u007F]/;
const isValidPathString = function (pathString) {
return (typeof pathString === 'string' &&
pathString.length !== 0 &&
!INVALID_PATH_REGEX_.test(pathString));
};
const validateEventType = function (fnName, eventType, optional) {
if (optional && eventType === undefined) {
return;
}
switch (eventType) {
case 'value':
case 'child_added':
case 'child_removed':
case 'child_changed':
case 'child_moved':
break;
default:
throw new Error(errorPrefix(fnName, 'eventType') +
'must be a valid event type = "value", "child_added", "child_removed", ' +
'"child_changed", or "child_moved".');
}
};
const validatePathString = function (fnName, argumentName, pathString, optional) {
if (optional && pathString === undefined) {
return;
}
if (!isValidPathString(pathString)) {
throw new Error(errorPrefix(fnName, argumentName) +
'was an invalid path = "' +
pathString +
'". Paths must be non-empty strings and ' +
'can\'t contain ".", "#", "$", "[", or "]"');
}
};
const validateWritablePath = function (fnName, path) {
if (pathGetFront(path) === '.info') {
throw new Error(fnName + " failed = Can't modify data under /.info/");
}
};
const validateBoolean = function (fnName, argumentName, bool, optional) {
if (optional && bool === undefined) {
return;
}
if (typeof bool !== 'boolean') {
throw new Error(errorPrefix(fnName, argumentName) + 'must be a boolean.');
}
};
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class NamedNode {
constructor(name, node) {
this.name = name;
this.node = node;
}
static Wrap(name, node) {
return new NamedNode(name, node);
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class Index {
/**
* @returns A standalone comparison function for
* this index
*/
getCompare() {
return this.compare.bind(this);
}
/**
* Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,
* it's possible that the changes are isolated to parts of the snapshot that are not indexed.
*
*
* @returns True if the portion of the snapshot being indexed changed between oldNode and newNode
*/
indexedValueChanged(oldNode, newNode) {
const oldWrapped = new NamedNode(MIN_NAME, oldNode);
const newWrapped = new NamedNode(MIN_NAME, newNode);
return this.compare(oldWrapped, newWrapped) !== 0;
}
/**
* @returns a node wrapper that will sort equal to or less than
* any other node wrapper, using this index
*/
minPost() {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
return NamedNode.MIN;
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
let MAX_NODE$1;
const priorityHashText = function (priority) {
if (typeof priority === 'number') {
return 'number:' + doubleToIEEE754String(priority);
}
else {
return 'string:' + priority;
}
};
/**
* Validates that a priority snapshot Node is valid.
*/
const validatePriorityNode = function (priorityNode) {
if (priorityNode.isLeafNode()) {
const val = priorityNode.val();
assert(typeof val === 'string' ||
typeof val === 'number' ||
(typeof val === 'object' && contains(val, '.sv')), 'Priority must be a string or number.');
}
else {
assert(priorityNode === MAX_NODE$1 || priorityNode.isEmpty(), 'priority of unexpected type.');
}
// Don't call getPriority() on MAX_NODE to avoid hitting assertion.
assert(priorityNode === MAX_NODE$1 || priorityNode.getPriority().isEmpty(), "Priority nodes can't have a priority of their own.");
};
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
let __childrenNodeConstructor;
/**
* LeafNode is a class for storing leaf nodes in a DataSnapshot. It
* implements Node and stores the value of the node (a string,
* number, or boolean) accessible via getValue().
*/
class LeafNode {
/**
* @param value_ - The value to store in this leaf node. The object type is
* possible in the event of a deferred value
* @param priorityNode_ - The priority of this node.
*/
constructor(value_, priorityNode_ = LeafNode.__childrenNodeConstructor.EMPTY_NODE) {
this.value_ = value_;
this.priorityNode_ = priorityNode_;
this.lazyHash_ = null;
assert(this.value_ !== undefined && this.value_ !== null, "LeafNode shouldn't be created with null/undefined value.");
validatePriorityNode(this.priorityNode_);
}
static set __childrenNodeConstructor(val) {
__childrenNodeConstructor = val;
}
static get __childrenNodeConstructor() {
return __childrenNodeConstructor;
}
/** @inheritDoc */
isLeafNode() {
return true;
}
/** @inheritDoc */
getPriority() {
return this.priorityNode_;
}
/** @inheritDoc */
updatePriority(newPriorityNode) {
return new LeafNode(this.value_, newPriorityNode);
}
/** @inheritDoc */
getImmediateChild(childName) {
// Hack to treat priority as a regular child
if (childName === '.priority') {
return this.priorityNode_;
}
else {
return LeafNode.__childrenNodeConstructor.EMPTY_NODE;
}
}
/** @inheritDoc */
getChild(path) {
if (pathIsEmpty(path)) {
return this;
}
else if (pathGetFront(path) === '.priority') {
return this.priorityNode_;
}
else {
return LeafNode.__childrenNodeConstructor.EMPTY_NODE;
}
}
hasChild() {
return false;
}
/** @inheritDoc */
getPredecessorChildName(childName, childNode) {
return null;
}
/** @inheritDoc */
updateImmediateChild(childName, newChildNode) {
if (childName === '.priority') {
return this.updatePriority(newChildNode);
}
else if (newChildNode.isEmpty() && childName !== '.priority') {
return this;
}
else {
return LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(childName, newChildNode).updatePriority(this.priorityNode_);
}
}
/** @inheritDoc */
updateChild(path, newChildNode) {
const front = pathGetFront(path);
if (front === null) {
return newChildNode;
}
else if (newChildNode.isEmpty() && front !== '.priority') {
return this;
}
else {
assert(front !== '.priority' || pathGetLength(path) === 1, '.priority must be the last token in a path');
return this.updateImmediateChild(front, LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateChild(pathPopFront(path), newChildNode));
}
}
/** @inheritDoc */
isEmpty() {
return false;
}
/** @inheritDoc */
numChildren() {
return 0;
}
/** @inheritDoc */
forEachChild(index, action) {
return false;
}
val(exportFormat) {
if (exportFormat && !this.getPriority().isEmpty()) {
return {
'.value': this.getValue(),
'.priority': this.getPriority().val()
};
}
else {
return this.getValue();
}
}
/** @inheritDoc */
hash() {
if (this.lazyHash_ === null) {
let toHash = '';
if (!this.priorityNode_.isEmpty()) {
toHash +=
'priority:' +
priorityHashText(this.priorityNode_.val()) +
':';
}
const type = typeof this.value_;
toHash += type + ':';
if (type === 'number') {
toHash += doubleToIEEE754String(this.value_);
}
else {
toHash += this.value_;
}
this.lazyHash_ = sha1(toHash);
}
return this.lazyHash_;
}
/**
* Returns the value of the leaf node.
* @returns The value of the node.
*/
getValue() {
return this.value_;
}
compareTo(other) {
if (other === LeafNode.__childrenNodeConstructor.EMPTY_NODE) {
return 1;
}
else if (other instanceof LeafNode.__childrenNodeConstructor) {
return -1;
}
else {
assert(other.isLeafNode(), 'Unknown node type');
return this.compareToLeafNode_(other);
}
}
/**
* Comparison specifically for two leaf nodes
*/
compareToLeafNode_(otherLeaf) {
const otherLeafType = typeof otherLeaf.value_;
const thisLeafType = typeof this.value_;
const otherIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(otherLeafType);
const thisIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(thisLeafType);
assert(otherIndex >= 0, 'Unknown leaf type: ' + otherLeafType);
assert(thisIndex >= 0, 'Unknown leaf type: ' + thisLeafType);
if (otherIndex === thisIndex) {
// Same type, compare values
if (thisLeafType === 'object') {
// Deferred value nodes are all equal, but we should also never get to this point...
return 0;
}
else {
// Note that this works because true > false, all others are number or string comparisons
if (this.value_ < otherLeaf.value_) {
return -1;
}
else if (this.value_ === otherLeaf.value_) {
return 0;
}
else {
return 1;
}
}
}
else {
return thisIndex - otherIndex;
}
}
withIndex() {
return this;
}
isIndexed() {
return true;
}
equals(other) {
if (other === this) {
return true;
}
else if (other.isLeafNode()) {
const otherLeaf = other;
return (this.value_ === otherLeaf.value_ &&
this.priorityNode_.equals(otherLeaf.priorityNode_));
}
else {
return false;
}
}
}
/**
* The sort order for comparing leaf nodes of different types. If two leaf nodes have
* the same type, the comparison falls back to their value
*/
LeafNode.VALUE_TYPE_ORDER = ['object', 'boolean', 'number', 'string'];
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
let nodeFromJSON;
let MAX_NODE;
class PriorityIndex extends Index {
compare(a, b) {
const aPriority = a.node.getPriority();
const bPriority = b.node.getPriority();
const indexCmp = aPriority.compareTo(bPriority);
if (indexCmp === 0) {
return nameCompare(a.name, b.name);
}
else {
return indexCmp;
}
}
isDefinedOn(node) {
return !node.getPriority().isEmpty();
}
indexedValueChanged(oldNode, newNode) {
return !oldNode.getPriority().equals(newNode.getPriority());
}
minPost() {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
return NamedNode.MIN;
}
maxPost() {
return new NamedNode(MAX_NAME, new LeafNode('[PRIORITY-POST]', MAX_NODE));
}
makePost(indexValue, name) {
const priorityNode = nodeFromJSON(indexValue);
return new NamedNode(name, new LeafNode('[PRIORITY-POST]', priorityNode));
}
/**
* @returns String representation for inclusion in a query spec
*/
toString() {
return '.priority';
}
}
const PRIORITY_INDEX = new PriorityIndex();
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* This class is an immutable-from-the-public-api struct containing a set of query parameters defining a
* range to be returned for a particular location. It is assumed that validation of parameters is done at the
* user-facing API level, so it is not done here.
*/
class QueryParams {
constructor() {
this.limitSet_ = false;
this.startSet_ = false;
this.startNameSet_ = false;
this.startAfterSet_ = false;
this.endSet_ = false;
this.endNameSet_ = false;
this.endBeforeSet_ = false;
this.limit_ = 0;
this.viewFrom_ = '';
this.indexStartValue_ = null;
this.indexStartName_ = '';
this.indexEndValue_ = null;
this.indexEndName_ = '';
this.index_ = PRIORITY_INDEX;
}
hasStart() {
return this.startSet_;
}
hasStartAfter() {
return this.startAfterSet_;
}
hasEndBefore() {
return this.endBeforeSet_;
}
/**
* @returns True if it would return from left.
*/
isViewFromLeft() {
if (this.viewFrom_ === '') {
// limit(), rather than limitToFirst or limitToLast was called.
// This means that only one of startSet_ and endSet_ is true. Use them
// to calculate which side of the view to anchor to. If neither is set,
// anchor to the end.
return this.startSet_;
}
else {
return this.viewFrom_ === "l" /* VIEW_FROM_LEFT */;
}
}
/**
* Only valid to call if hasStart() returns true
*/
getIndexStartValue() {
assert(this.startSet_, 'Only valid if start has been set');
return this.indexStartValue_;
}
/**
* Only valid to call if hasStart() returns true.
* Returns the starting key name for the range defined by these query parameters
*/
getIndexStartName() {
assert(this.startSet_, 'Only valid if start has been set');
if (this.startNameSet_) {
return this.indexStartName_;
}
else {
return MIN_NAME;
}
}
hasEnd() {
return this.endSet_;
}
/**
* Only valid to call if hasEnd() returns true.
*/
getIndexEndValue() {
assert(this.endSet_, 'Only valid if end has been set');
return this.indexEndValue_;
}
/**
* Only valid to call if hasEnd() returns true.
* Returns the end key name for the range defined by these query parameters
*/
getIndexEndName() {
assert(this.endSet_, 'Only valid if end has been set');
if (this.endNameSet_) {
return this.indexEndName_;
}
else {
return MAX_NAME;
}
}
hasLimit() {
return this.limitSet_;
}
/**
* @returns True if a limit has been set and it has been explicitly anchored
*/
hasAnchoredLimit() {
return this.limitSet_ && this.viewFrom_ !== '';
}
/**
* Only valid to call if hasLimit() returns true
*/
getLimit() {
assert(this.limitSet_, 'Only valid if limit has been set');
return this.limit_;
}
getIndex() {
return this.index_;
}
loadsAllData() {
return !(this.startSet_ || this.endSet_ || this.limitSet_);
}
isDefault() {
return this.loadsAllData() && this.index_ === PRIORITY_INDEX;
}
copy() {
const copy = new QueryParams();
copy.limitSet_ = this.limitSet_;
copy.limit_ = this.limit_;
copy.startSet_ = this.startSet_;
copy.indexStartValue_ = this.indexStartValue_;
copy.startNameSet_ = this.startNameSet_;
copy.indexStartName_ = this.indexStartName_;
copy.endSet_ = this.endSet_;
copy.indexEndValue_ = this.indexEndValue_;
copy.endNameSet_ = this.endNameSet_;
copy.indexEndName_ = this.indexEndName_;
copy.index_ = this.index_;
copy.viewFrom_ = this.viewFrom_;
return copy;
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class OnDisconnect {
constructor(_delegate) {
this._delegate = _delegate;
}
cancel(onComplete) {
validateArgCount('OnDisconnect.cancel', 0, 1, arguments.length);
validateCallback('OnDisconnect.cancel', 'onComplete', onComplete, true);
const result = this._delegate.cancel();
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
remove(onComplete) {
validateArgCount('OnDisconnect.remove', 0, 1, arguments.length);
validateCallback('OnDisconnect.remove', 'onComplete', onComplete, true);
const result = this._delegate.remove();
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
set(value, onComplete) {
validateArgCount('OnDisconnect.set', 1, 2, arguments.length);
validateCallback('OnDisconnect.set', 'onComplete', onComplete, true);
const result = this._delegate.set(value);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
setWithPriority(value, priority, onComplete) {
validateArgCount('OnDisconnect.setWithPriority', 2, 3, arguments.length);
validateCallback('OnDisconnect.setWithPriority', 'onComplete', onComplete, true);
const result = this._delegate.setWithPriority(value, priority);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
update(objectToMerge, onComplete) {
validateArgCount('OnDisconnect.update', 1, 2, arguments.length);
if (Array.isArray(objectToMerge)) {
const newObjectToMerge = {};
for (let i = 0; i < objectToMerge.length; ++i) {
newObjectToMerge['' + i] = objectToMerge[i];
}
objectToMerge = newObjectToMerge;
warn('Passing an Array to firebase.database.onDisconnect().update() is deprecated. Use set() if you want to overwrite the ' +
'existing data, or an Object with integer keys if you really do want to only update some of the children.');
}
validateCallback('OnDisconnect.update', 'onComplete', onComplete, true);
const result = this._delegate.update(objectToMerge);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class TransactionResult {
/**
* A type for the resolve value of Firebase.transaction.
*/
constructor(committed, snapshot) {
this.committed = committed;
this.snapshot = snapshot;
}
// Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary
// for end-users
toJSON() {
validateArgCount('TransactionResult.toJSON', 0, 1, arguments.length);
return { committed: this.committed, snapshot: this.snapshot.toJSON() };
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-enable @typescript-eslint/no-explicit-any */
/**
* Class representing a firebase data snapshot. It wraps a SnapshotNode and
* surfaces the public methods (val, forEach, etc.) we want to expose.
*/
class DataSnapshot {
constructor(_database, _delegate) {
this._database = _database;
this._delegate = _delegate;
}
/**
* Retrieves the snapshot contents as JSON. Returns null if the snapshot is
* empty.
*
* @returns JSON representation of the DataSnapshot contents, or null if empty.
*/
val() {
validateArgCount('DataSnapshot.val', 0, 0, arguments.length);
return this._delegate.val();
}
/**
* Returns the snapshot contents as JSON, including priorities of node. Suitable for exporting
* the entire node contents.
* @returns JSON representation of the DataSnapshot contents, or null if empty.
*/
exportVal() {
validateArgCount('DataSnapshot.exportVal', 0, 0, arguments.length);
return this._delegate.exportVal();
}
// Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary
// for end-users
toJSON() {
// Optional spacer argument is unnecessary because we're depending on recursion rather than stringifying the content
validateArgCount('DataSnapshot.toJSON', 0, 1, arguments.length);
return this._delegate.toJSON();
}
/**
* Returns whether the snapshot contains a non-null value.
*
* @returns Whether the snapshot contains a non-null value, or is empty.
*/
exists() {
validateArgCount('DataSnapshot.exists', 0, 0, arguments.length);
return this._delegate.exists();
}
/**
* Returns a DataSnapshot of the specified child node's contents.
*
* @param path - Path to a child.
* @returns DataSnapshot for child node.
*/
child(path) {
validateArgCount('DataSnapshot.child', 0, 1, arguments.length);
// Ensure the childPath is a string (can be a number)
path = String(path);
validatePathString('DataSnapshot.child', 'path', path, false);
return new DataSnapshot(this._database, this._delegate.child(path));
}
/**
* Returns whether the snapshot contains a child at the specified path.
*
* @param path - Path to a child.
* @returns Whether the child exists.
*/
hasChild(path) {
validateArgCount('DataSnapshot.hasChild', 1, 1, arguments.length);
validatePathString('DataSnapshot.hasChild', 'path', path, false);
return this._delegate.hasChild(path);
}
/**
* Returns the priority of the object, or null if no priority was set.
*
* @returns The priority.
*/
getPriority() {
validateArgCount('DataSnapshot.getPriority', 0, 0, arguments.length);
return this._delegate.priority;
}
/**
* Iterates through child nodes and calls the specified action for each one.
*
* @param action - Callback function to be called
* for each child.
* @returns True if forEach was canceled by action returning true for
* one of the child nodes.
*/
forEach(action) {
validateArgCount('DataSnapshot.forEach', 1, 1, arguments.length);
validateCallback('DataSnapshot.forEach', 'action', action, false);
return this._delegate.forEach(expDataSnapshot => action(new DataSnapshot(this._database, expDataSnapshot)));
}
/**
* Returns whether this DataSnapshot has children.
* @returns True if the DataSnapshot contains 1 or more child nodes.
*/
hasChildren() {
validateArgCount('DataSnapshot.hasChildren', 0, 0, arguments.length);
return this._delegate.hasChildren();
}
get key() {
return this._delegate.key;
}
/**
* Returns the number of children for this DataSnapshot.
* @returns The number of children that this DataSnapshot contains.
*/
numChildren() {
validateArgCount('DataSnapshot.numChildren', 0, 0, arguments.length);
return this._delegate.size;
}
/**
* @returns The Firebase reference for the location this snapshot's data came
* from.
*/
getRef() {
validateArgCount('DataSnapshot.ref', 0, 0, arguments.length);
return new Reference(this._database, this._delegate.ref);
}
get ref() {
return this.getRef();
}
}
/**
* A Query represents a filter to be applied to a firebase location. This object purely represents the
* query expression (and exposes our public API to build the query). The actual query logic is in ViewBase.js.
*
* Since every Firebase reference is a query, Firebase inherits from this object.
*/
class Query {
constructor(database, _delegate) {
this.database = database;
this._delegate = _delegate;
}
on(eventType, callback, cancelCallbackOrContext, context) {
var _a;
validateArgCount('Query.on', 2, 4, arguments.length);
validateCallback('Query.on', 'callback', callback, false);
const ret = Query.getCancelAndContextArgs_('Query.on', cancelCallbackOrContext, context);
const valueCallback = (expSnapshot, previousChildName) => {
callback.call(ret.context, new DataSnapshot(this.database, expSnapshot), previousChildName);
};
valueCallback.userCallback = callback;
valueCallback.context = ret.context;
const cancelCallback = (_a = ret.cancel) === null || _a === void 0 ? void 0 : _a.bind(ret.context);
switch (eventType) {
case 'value':
onValue(this._delegate, valueCallback, cancelCallback);
return callback;
case 'child_added':
onChildAdded(this._delegate, valueCallback, cancelCallback);
return callback;
case 'child_removed':
onChildRemoved(this._delegate, valueCallback, cancelCallback);
return callback;
case 'child_changed':
onChildChanged(this._delegate, valueCallback, cancelCallback);
return callback;
case 'child_moved':
onChildMoved(this._delegate, valueCallback, cancelCallback);
return callback;
default:
throw new Error(errorPrefix('Query.on', 'eventType') +
'must be a valid event type = "value", "child_added", "child_removed", ' +
'"child_changed", or "child_moved".');
}
}
off(eventType, callback, context) {
validateArgCount('Query.off', 0, 3, arguments.length);
validateEventType('Query.off', eventType, true);
validateCallback('Query.off', 'callback', callback, true);
validateContextObject('Query.off', 'context', context, true);
if (callback) {
const valueCallback = () => { };
valueCallback.userCallback = callback;
valueCallback.context = context;
off(this._delegate, eventType, valueCallback);
}
else {
off(this._delegate, eventType);
}
}
/**
* Get the server-value for this query, or return a cached value if not connected.
*/
get() {
return get(this._delegate).then(expSnapshot => {
return new DataSnapshot(this.database, expSnapshot);
});
}
/**
* Attaches a listener, waits for the first event, and then removes the listener
*/
once(eventType, callback, failureCallbackOrContext, context) {
validateArgCount('Query.once', 1, 4, arguments.length);
validateCallback('Query.once', 'callback', callback, true);
const ret = Query.getCancelAndContextArgs_('Query.once', failureCallbackOrContext, context);
const deferred = new Deferred();
const valueCallback = (expSnapshot, previousChildName) => {
const result = new DataSnapshot(this.database, expSnapshot);
if (callback) {
callback.call(ret.context, result, previousChildName);
}
deferred.resolve(result);
};
valueCallback.userCallback = callback;
valueCallback.context = ret.context;
const cancelCallback = (error) => {
if (ret.cancel) {
ret.cancel.call(ret.context, error);
}
deferred.reject(error);
};
switch (eventType) {
case 'value':
onValue(this._delegate, valueCallback, cancelCallback, {
onlyOnce: true
});
break;
case 'child_added':
onChildAdded(this._delegate, valueCallback, cancelCallback, {
onlyOnce: true
});
break;
case 'child_removed':
onChildRemoved(this._delegate, valueCallback, cancelCallback, {
onlyOnce: true
});
break;
case 'child_changed':
onChildChanged(this._delegate, valueCallback, cancelCallback, {
onlyOnce: true
});
break;
case 'child_moved':
onChildMoved(this._delegate, valueCallback, cancelCallback, {
onlyOnce: true
});
break;
default:
throw new Error(errorPrefix('Query.once', 'eventType') +
'must be a valid event type = "value", "child_added", "child_removed", ' +
'"child_changed", or "child_moved".');
}
return deferred.promise;
}
/**
* Set a limit and anchor it to the start of the window.
*/
limitToFirst(limit) {
validateArgCount('Query.limitToFirst', 1, 1, arguments.length);
return new Query(this.database, query(this._delegate, limitToFirst(limit)));
}
/**
* Set a limit and anchor it to the end of the window.
*/
limitToLast(limit) {
validateArgCount('Query.limitToLast', 1, 1, arguments.length);
return new Query(this.database, query(this._delegate, limitToLast(limit)));
}
/**
* Given a child path, return a new query ordered by the specified grandchild path.
*/
orderByChild(path) {
validateArgCount('Query.orderByChild', 1, 1, arguments.length);
return new Query(this.database, query(this._delegate, orderByChild(path)));
}
/**
* Return a new query ordered by the KeyIndex
*/
orderByKey() {
validateArgCount('Query.orderByKey', 0, 0, arguments.length);
return new Query(this.database, query(this._delegate, orderByKey()));
}
/**
* Return a new query ordered by the PriorityIndex
*/
orderByPriority() {
validateArgCount('Query.orderByPriority', 0, 0, arguments.length);
return new Query(this.database, query(this._delegate, orderByPriority()));
}
/**
* Return a new query ordered by the ValueIndex
*/
orderByValue() {
validateArgCount('Query.orderByValue', 0, 0, arguments.length);
return new Query(this.database, query(this._delegate, orderByValue()));
}
startAt(value = null, name) {
validateArgCount('Query.startAt', 0, 2, arguments.length);
return new Query(this.database, query(this._delegate, startAt(value, name)));
}
startAfter(value = null, name) {
validateArgCount('Query.startAfter', 0, 2, arguments.length);
return new Query(this.database, query(this._delegate, startAfter(value, name)));
}
endAt(value = null, name) {
validateArgCount('Query.endAt', 0, 2, arguments.length);
return new Query(this.database, query(this._delegate, endAt(value, name)));
}
endBefore(value = null, name) {
validateArgCount('Query.endBefore', 0, 2, arguments.length);
return new Query(this.database, query(this._delegate, endBefore(value, name)));
}
/**
* Load the selection of children with exactly the specified value, and, optionally,
* the specified name.
*/
equalTo(value, name) {
validateArgCount('Query.equalTo', 1, 2, arguments.length);
return new Query(this.database, query(this._delegate, equalTo(value, name)));
}
/**
* @returns URL for this location.
*/
toString() {
validateArgCount('Query.toString', 0, 0, arguments.length);
return this._delegate.toString();
}
// Do not create public documentation. This is intended to make JSON serialization work but is otherwise unnecessary
// for end-users.
toJSON() {
// An optional spacer argument is unnecessary for a string.
validateArgCount('Query.toJSON', 0, 1, arguments.length);
return this._delegate.toJSON();
}
/**
* Return true if this query and the provided query are equivalent; otherwise, return false.
*/
isEqual(other) {
validateArgCount('Query.isEqual', 1, 1, arguments.length);
if (!(other instanceof Query)) {
const error = 'Query.isEqual failed: First argument must be an instance of firebase.database.Query.';
throw new Error(error);
}
return this._delegate.isEqual(other._delegate);
}
/**
* Helper used by .on and .once to extract the context and or cancel arguments.
* @param fnName - The function name (on or once)
*
*/
static getCancelAndContextArgs_(fnName, cancelOrContext, context) {
const ret = { cancel: undefined, context: undefined };
if (cancelOrContext && context) {
ret.cancel = cancelOrContext;
validateCallback(fnName, 'cancel', ret.cancel, true);
ret.context = context;
validateContextObject(fnName, 'context', ret.context, true);
}
else if (cancelOrContext) {
// we have either a cancel callback or a context.
if (typeof cancelOrContext === 'object' && cancelOrContext !== null) {
// it's a context!
ret.context = cancelOrContext;
}
else if (typeof cancelOrContext === 'function') {
ret.cancel = cancelOrContext;
}
else {
throw new Error(errorPrefix(fnName, 'cancelOrContext') +
' must either be a cancel callback or a context object.');
}
}
return ret;
}
get ref() {
return new Reference(this.database, new _ReferenceImpl(this._delegate._repo, this._delegate._path));
}
}
class Reference extends Query {
/**
* Call options:
* new Reference(Repo, Path) or
* new Reference(url: string, string|RepoManager)
*
* Externally - this is the firebase.database.Reference type.
*/
constructor(database, _delegate) {
super(database, new _QueryImpl(_delegate._repo, _delegate._path, new QueryParams(), false));
this.database = database;
this._delegate = _delegate;
}
/** @returns {?string} */
getKey() {
validateArgCount('Reference.key', 0, 0, arguments.length);
return this._delegate.key;
}
child(pathString) {
validateArgCount('Reference.child', 1, 1, arguments.length);
if (typeof pathString === 'number') {
pathString = String(pathString);
}
return new Reference(this.database, child(this._delegate, pathString));
}
/** @returns {?Reference} */
getParent() {
validateArgCount('Reference.parent', 0, 0, arguments.length);
const parent = this._delegate.parent;
return parent ? new Reference(this.database, parent) : null;
}
/** @returns {!Reference} */
getRoot() {
validateArgCount('Reference.root', 0, 0, arguments.length);
return new Reference(this.database, this._delegate.root);
}
set(newVal, onComplete) {
validateArgCount('Reference.set', 1, 2, arguments.length);
validateCallback('Reference.set', 'onComplete', onComplete, true);
const result = set(this._delegate, newVal);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
update(values, onComplete) {
validateArgCount('Reference.update', 1, 2, arguments.length);
if (Array.isArray(values)) {
const newObjectToMerge = {};
for (let i = 0; i < values.length; ++i) {
newObjectToMerge['' + i] = values[i];
}
values = newObjectToMerge;
warn('Passing an Array to Firebase.update() is deprecated. ' +
'Use set() if you want to overwrite the existing data, or ' +
'an Object with integer keys if you really do want to ' +
'only update some of the children.');
}
validateWritablePath('Reference.update', this._delegate._path);
validateCallback('Reference.update', 'onComplete', onComplete, true);
const result = update(this._delegate, values);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
setWithPriority(newVal, newPriority, onComplete) {
validateArgCount('Reference.setWithPriority', 2, 3, arguments.length);
validateCallback('Reference.setWithPriority', 'onComplete', onComplete, true);
const result = setWithPriority(this._delegate, newVal, newPriority);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
remove(onComplete) {
validateArgCount('Reference.remove', 0, 1, arguments.length);
validateCallback('Reference.remove', 'onComplete', onComplete, true);
const result = remove(this._delegate);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
transaction(transactionUpdate, onComplete, applyLocally) {
validateArgCount('Reference.transaction', 1, 3, arguments.length);
validateCallback('Reference.transaction', 'transactionUpdate', transactionUpdate, false);
validateCallback('Reference.transaction', 'onComplete', onComplete, true);
validateBoolean('Reference.transaction', 'applyLocally', applyLocally, true);
const result = runTransaction(this._delegate, transactionUpdate, {
applyLocally
}).then(transactionResult => new TransactionResult(transactionResult.committed, new DataSnapshot(this.database, transactionResult.snapshot)));
if (onComplete) {
result.then(transactionResult => onComplete(null, transactionResult.committed, transactionResult.snapshot), error => onComplete(error, false, null));
}
return result;
}
setPriority(priority, onComplete) {
validateArgCount('Reference.setPriority', 1, 2, arguments.length);
validateCallback('Reference.setPriority', 'onComplete', onComplete, true);
const result = setPriority(this._delegate, priority);
if (onComplete) {
result.then(() => onComplete(null), error => onComplete(error));
}
return result;
}
push(value, onComplete) {
validateArgCount('Reference.push', 0, 2, arguments.length);
validateCallback('Reference.push', 'onComplete', onComplete, true);
const expPromise = push(this._delegate, value);
const promise = expPromise.then(expRef => new Reference(this.database, expRef));
if (onComplete) {
promise.then(() => onComplete(null), error => onComplete(error));
}
const result = new Reference(this.database, expPromise);
result.then = promise.then.bind(promise);
result.catch = promise.catch.bind(promise, undefined);
return result;
}
onDisconnect() {
validateWritablePath('Reference.onDisconnect', this._delegate._path);
return new OnDisconnect(new OnDisconnect$1(this._delegate._repo, this._delegate._path));
}
get key() {
return this.getKey();
}
get parent() {
return this.getParent();
}
get root() {
return this.getRoot();
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Class representing a firebase database.
*/
class Database {
/**
* The constructor should not be called by users of our public API.
*/
constructor(_delegate, app) {
this._delegate = _delegate;
this.app = app;
this.INTERNAL = {
delete: () => this._delegate._delete()
};
}
/**
* Modify this instance to communicate with the Realtime Database emulator.
*
* <p>Note: This method must be called before performing any other operation.
*
* @param host - the emulator host (ex: localhost)
* @param port - the emulator port (ex: 8080)
* @param options.mockUserToken - the mock auth token to use for unit testing Security Rules
*/
useEmulator(host, port, options = {}) {
connectDatabaseEmulator(this._delegate, host, port, options);
}
ref(path) {
validateArgCount('database.ref', 0, 1, arguments.length);
if (path instanceof Reference) {
const childRef = refFromURL(this._delegate, path.toString());
return new Reference(this, childRef);
}
else {
const childRef = ref(this._delegate, path);
return new Reference(this, childRef);
}
}
/**
* Returns a reference to the root or the path specified in url.
* We throw a exception if the url is not in the same domain as the
* current repo.
* @returns Firebase reference.
*/
refFromURL(url) {
const apiName = 'database.refFromURL';
validateArgCount(apiName, 1, 1, arguments.length);
const childRef = refFromURL(this._delegate, url);
return new Reference(this, childRef);
}
// Make individual repo go offline.
goOffline() {
validateArgCount('database.goOffline', 0, 0, arguments.length);
return goOffline(this._delegate);
}
goOnline() {
validateArgCount('database.goOnline', 0, 0, arguments.length);
return goOnline(this._delegate);
}
}
Database.ServerValue = {
TIMESTAMP: serverTimestamp(),
increment: (delta) => increment(delta)
};
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const PROTOCOL_VERSION = '5';
const VERSION_PARAM = 'v';
const TRANSPORT_SESSION_PARAM = 's';
const REFERER_PARAM = 'r';
const FORGE_REF = 'f';
// Matches console.firebase.google.com, firebase-console-*.corp.google.com and
// firebase.corp.google.com
const FORGE_DOMAIN_RE = /(console\.firebase|firebase-console-\w+\.corp|firebase\.corp)\.google\.com/;
const LAST_SESSION_PARAM = 'ls';
const APPLICATION_ID_PARAM = 'p';
const APP_CHECK_TOKEN_PARAM = 'ac';
const WEBSOCKET = 'websocket';
const LONG_POLLING = 'long_polling';
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* A class that holds metadata about a Repo object
*/
class RepoInfo {
/**
* @param host - Hostname portion of the url for the repo
* @param secure - Whether or not this repo is accessed over ssl
* @param namespace - The namespace represented by the repo
* @param webSocketOnly - Whether to prefer websockets over all other transports (used by Nest).
* @param nodeAdmin - Whether this instance uses Admin SDK credentials
* @param persistenceKey - Override the default session persistence storage key
*/
constructor(host, secure, namespace, webSocketOnly, nodeAdmin = false, persistenceKey = '', includeNamespaceInQueryParams = false) {
this.secure = secure;
this.namespace = namespace;
this.webSocketOnly = webSocketOnly;
this.nodeAdmin = nodeAdmin;
this.persistenceKey = persistenceKey;
this.includeNamespaceInQueryParams = includeNamespaceInQueryParams;
this._host = host.toLowerCase();
this._domain = this._host.substr(this._host.indexOf('.') + 1);
this.internalHost =
PersistentStorage.get('host:' + host) || this._host;
}
isCacheableHost() {
return this.internalHost.substr(0, 2) === 's-';
}
isCustomHost() {
return (this._domain !== 'firebaseio.com' &&
this._domain !== 'firebaseio-demo.com');
}
get host() {
return this._host;
}
set host(newHost) {
if (newHost !== this.internalHost) {
this.internalHost = newHost;
if (this.isCacheableHost()) {
PersistentStorage.set('host:' + this._host, this.internalHost);
}
}
}
toString() {
let str = this.toURLString();
if (this.persistenceKey) {
str += '<' + this.persistenceKey + '>';
}
return str;
}
toURLString() {
const protocol = this.secure ? 'https://' : 'http://';
const query = this.includeNamespaceInQueryParams
? `?ns=${this.namespace}`
: '';
return `${protocol}${this.host}/${query}`;
}
}
function repoInfoNeedsQueryParam(repoInfo) {
return (repoInfo.host !== repoInfo.internalHost ||
repoInfo.isCustomHost() ||
repoInfo.includeNamespaceInQueryParams);
}
/**
* Returns the websocket URL for this repo
* @param repoInfo - RepoInfo object
* @param type - of connection
* @param params - list
* @returns The URL for this repo
*/
function repoInfoConnectionURL(repoInfo, type, params) {
assert(typeof type === 'string', 'typeof type must == string');
assert(typeof params === 'object', 'typeof params must == object');
let connURL;
if (type === WEBSOCKET) {
connURL =
(repoInfo.secure ? 'wss://' : 'ws://') + repoInfo.internalHost + '/.ws?';
}
else if (type === LONG_POLLING) {
connURL =
(repoInfo.secure ? 'https://' : 'http://') +
repoInfo.internalHost +
'/.lp?';
}
else {
throw new Error('Unknown connection type: ' + type);
}
if (repoInfoNeedsQueryParam(repoInfo)) {
params['ns'] = repoInfo.namespace;
}
const pairs = [];
each(params, (key, value) => {
pairs.push(key + '=' + value);
});
return connURL + pairs.join('&');
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Tracks a collection of stats.
*/
class StatsCollection {
constructor() {
this.counters_ = {};
}
incrementCounter(name, amount = 1) {
if (!contains(this.counters_, name)) {
this.counters_[name] = 0;
}
this.counters_[name] += amount;
}
get() {
return deepCopy(this.counters_);
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const collections = {};
function statsManagerGetCollection(repoInfo) {
const hashString = repoInfo.toString();
if (!collections[hashString]) {
collections[hashString] = new StatsCollection();
}
return collections[hashString];
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* This class ensures the packets from the server arrive in order
* This class takes data from the server and ensures it gets passed into the callbacks in order.
*/
class PacketReceiver {
/**
* @param onMessage_
*/
constructor(onMessage_) {
this.onMessage_ = onMessage_;
this.pendingResponses = [];
this.currentResponseNum = 0;
this.closeAfterResponse = -1;
this.onClose = null;
}
closeAfter(responseNum, callback) {
this.closeAfterResponse = responseNum;
this.onClose = callback;
if (this.closeAfterResponse < this.currentResponseNum) {
this.onClose();
this.onClose = null;
}
}
/**
* Each message from the server comes with a response number, and an array of data. The responseNumber
* allows us to ensure that we process them in the right order, since we can't be guaranteed that all
* browsers will respond in the same order as the requests we sent
*/
handleResponse(requestNum, data) {
this.pendingResponses[requestNum] = data;
while (this.pendingResponses[this.currentResponseNum]) {
const toProcess = this.pendingResponses[this.currentResponseNum];
delete this.pendingResponses[this.currentResponseNum];
for (let i = 0; i < toProcess.length; ++i) {
if (toProcess[i]) {
exceptionGuard(() => {
this.onMessage_(toProcess[i]);
});
}
}
if (this.currentResponseNum === this.closeAfterResponse) {
if (this.onClose) {
this.onClose();
this.onClose = null;
}
break;
}
this.currentResponseNum++;
}
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// URL query parameters associated with longpolling
const FIREBASE_LONGPOLL_START_PARAM = 'start';
const FIREBASE_LONGPOLL_CLOSE_COMMAND = 'close';
const FIREBASE_LONGPOLL_COMMAND_CB_NAME = 'pLPCommand';
const FIREBASE_LONGPOLL_DATA_CB_NAME = 'pRTLPCB';
const FIREBASE_LONGPOLL_ID_PARAM = 'id';
const FIREBASE_LONGPOLL_PW_PARAM = 'pw';
const FIREBASE_LONGPOLL_SERIAL_PARAM = 'ser';
const FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = 'cb';
const FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = 'seg';
const FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = 'ts';
const FIREBASE_LONGPOLL_DATA_PARAM = 'd';
const FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = 'dframe';
//Data size constants.
//TODO: Perf: the maximum length actually differs from browser to browser.
// We should check what browser we're on and set accordingly.
const MAX_URL_DATA_SIZE = 1870;
const SEG_HEADER_SIZE = 30; //ie: &seg=8299234&ts=982389123&d=
const MAX_PAYLOAD_SIZE = MAX_URL_DATA_SIZE - SEG_HEADER_SIZE;
/**
* Keepalive period
* send a fresh request at minimum every 25 seconds. Opera has a maximum request
* length of 30 seconds that we can't exceed.
*/
const KEEPALIVE_REQUEST_INTERVAL = 25000;
/**
* How long to wait before aborting a long-polling connection attempt.
*/
const LP_CONNECT_TIMEOUT = 30000;
/**
* This class manages a single long-polling connection.
*/
class BrowserPollConnection {
/**
* @param connId An identifier for this connection, used for logging
* @param repoInfo The info for the endpoint to send data to.
* @param applicationId The Firebase App ID for this project.
* @param appCheckToken The AppCheck token for this client.
* @param authToken The AuthToken to use for this connection.
* @param transportSessionId Optional transportSessionid if we are
* reconnecting for an existing transport session
* @param lastSessionId Optional lastSessionId if the PersistentConnection has
* already created a connection previously
*/
constructor(connId, repoInfo, applicationId, appCheckToken, authToken, transportSessionId, lastSessionId) {
this.connId = connId;
this.repoInfo = repoInfo;
this.applicationId = applicationId;
this.appCheckToken = appCheckToken;
this.authToken = authToken;
this.transportSessionId = transportSessionId;
this.lastSessionId = lastSessionId;
this.bytesSent = 0;
this.bytesReceived = 0;
this.everConnected_ = false;
this.log_ = logWrapper(connId);
this.stats_ = statsManagerGetCollection(repoInfo);
this.urlFn = (params) => {
// Always add the token if we have one.
if (this.appCheckToken) {
params[APP_CHECK_TOKEN_PARAM] = this.appCheckToken;
}
return repoInfoConnectionURL(repoInfo, LONG_POLLING, params);
};
}
/**
* @param onMessage - Callback when messages arrive
* @param onDisconnect - Callback with connection lost.
*/
open(onMessage, onDisconnect) {
this.curSegmentNum = 0;
this.onDisconnect_ = onDisconnect;
this.myPacketOrderer = new PacketReceiver(onMessage);
this.isClosed_ = false;
this.connectTimeoutTimer_ = setTimeout(() => {
this.log_('Timed out trying to connect.');
// Make sure we clear the host cache
this.onClosed_();
this.connectTimeoutTimer_ = null;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
}, Math.floor(LP_CONNECT_TIMEOUT));
// Ensure we delay the creation of the iframe until the DOM is loaded.
executeWhenDOMReady(() => {
if (this.isClosed_) {
return;
}
//Set up a callback that gets triggered once a connection is set up.
this.scriptTagHolder = new FirebaseIFrameScriptHolder((...args) => {
const [command, arg1, arg2, arg3, arg4] = args;
this.incrementIncomingBytes_(args);
if (!this.scriptTagHolder) {
return; // we closed the connection.
}
if (this.connectTimeoutTimer_) {
clearTimeout(this.connectTimeoutTimer_);
this.connectTimeoutTimer_ = null;
}
this.everConnected_ = true;
if (command === FIREBASE_LONGPOLL_START_PARAM) {
this.id = arg1;
this.password = arg2;
}
else if (command === FIREBASE_LONGPOLL_CLOSE_COMMAND) {
// Don't clear the host cache. We got a response from the server, so we know it's reachable
if (arg1) {
// We aren't expecting any more data (other than what the server's already in the process of sending us
// through our already open polls), so don't send any more.
this.scriptTagHolder.sendNewPolls = false;
// arg1 in this case is the last response number sent by the server. We should try to receive
// all of the responses up to this one before closing
this.myPacketOrderer.closeAfter(arg1, () => {
this.onClosed_();
});
}
else {
this.onClosed_();
}
}
else {
throw new Error('Unrecognized command received: ' + command);
}
}, (...args) => {
const [pN, data] = args;
this.incrementIncomingBytes_(args);
this.myPacketOrderer.handleResponse(pN, data);
}, () => {
this.onClosed_();
}, this.urlFn);
//Send the initial request to connect. The serial number is simply to keep the browser from pulling previous results
//from cache.
const urlParams = {};
urlParams[FIREBASE_LONGPOLL_START_PARAM] = 't';
urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = Math.floor(Math.random() * 100000000);
if (this.scriptTagHolder.uniqueCallbackIdentifier) {
urlParams[FIREBASE_LONGPOLL_CALLBACK_ID_PARAM] = this.scriptTagHolder.uniqueCallbackIdentifier;
}
urlParams[VERSION_PARAM] = PROTOCOL_VERSION;
if (this.transportSessionId) {
urlParams[TRANSPORT_SESSION_PARAM] = this.transportSessionId;
}
if (this.lastSessionId) {
urlParams[LAST_SESSION_PARAM] = this.lastSessionId;
}
if (this.applicationId) {
urlParams[APPLICATION_ID_PARAM] = this.applicationId;
}
if (this.appCheckToken) {
urlParams[APP_CHECK_TOKEN_PARAM] = this.appCheckToken;
}
if (typeof location !== 'undefined' &&
location.hostname &&
FORGE_DOMAIN_RE.test(location.hostname)) {
urlParams[REFERER_PARAM] = FORGE_REF;
}
const connectURL = this.urlFn(urlParams);
this.log_('Connecting via long-poll to ' + connectURL);
this.scriptTagHolder.addTag(connectURL, () => {
/* do nothing */
});
});
}
/**
* Call this when a handshake has completed successfully and we want to consider the connection established
*/
start() {
this.scriptTagHolder.startLongPoll(this.id, this.password);
this.addDisconnectPingFrame(this.id, this.password);
}
/**
* Forces long polling to be considered as a potential transport
*/
static forceAllow() {
BrowserPollConnection.forceAllow_ = true;
}
/**
* Forces longpolling to not be considered as a potential transport
*/
static forceDisallow() {
BrowserPollConnection.forceDisallow_ = true;
}
// Static method, use string literal so it can be accessed in a generic way
static isAvailable() {
if (isNodeSdk()) {
return false;
}
else if (BrowserPollConnection.forceAllow_) {
return true;
}
else {
// NOTE: In React-Native there's normally no 'document', but if you debug a React-Native app in
// the Chrome debugger, 'document' is defined, but document.createElement is null (2015/06/08).
return (!BrowserPollConnection.forceDisallow_ &&
typeof document !== 'undefined' &&
document.createElement != null &&
!isChromeExtensionContentScript() &&
!isWindowsStoreApp());
}
}
/**
* No-op for polling
*/
markConnectionHealthy() { }
/**
* Stops polling and cleans up the iframe
*/
shutdown_() {
this.isClosed_ = true;
if (this.scriptTagHolder) {
this.scriptTagHolder.close();
this.scriptTagHolder = null;
}
//remove the disconnect frame, which will trigger an XHR call to the server to tell it we're leaving.
if (this.myDisconnFrame) {
document.body.removeChild(this.myDisconnFrame);
this.myDisconnFrame = null;
}
if (this.connectTimeoutTimer_) {
clearTimeout(this.connectTimeoutTimer_);
this.connectTimeoutTimer_ = null;
}
}
/**
* Triggered when this transport is closed
*/
onClosed_() {
if (!this.isClosed_) {
this.log_('Longpoll is closing itself');
this.shutdown_();
if (this.onDisconnect_) {
this.onDisconnect_(this.everConnected_);
this.onDisconnect_ = null;
}
}
}
/**
* External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server
* that we've left.
*/
close() {
if (!this.isClosed_) {
this.log_('Longpoll is being closed.');
this.shutdown_();
}
}
/**
* Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then
* broken into chunks (since URLs have a small maximum length).
* @param data - The JSON data to transmit.
*/
send(data) {
const dataStr = stringify(data);
this.bytesSent += dataStr.length;
this.stats_.incrementCounter('bytes_sent', dataStr.length);
//first, lets get the base64-encoded data
const base64data = base64Encode(dataStr);
//We can only fit a certain amount in each URL, so we need to split this request
//up into multiple pieces if it doesn't fit in one request.
const dataSegs = splitStringBySize(base64data, MAX_PAYLOAD_SIZE);
//Enqueue each segment for transmission. We assign each chunk a sequential ID and a total number
//of segments so that we can reassemble the packet on the server.
for (let i = 0; i < dataSegs.length; i++) {
this.scriptTagHolder.enqueueSegment(this.curSegmentNum, dataSegs.length, dataSegs[i]);
this.curSegmentNum++;
}
}
/**
* This is how we notify the server that we're leaving.
* We aren't able to send requests with DHTML on a window close event, but we can
* trigger XHR requests in some browsers (everything but Opera basically).
*/
addDisconnectPingFrame(id, pw) {
if (isNodeSdk()) {
return;
}
this.myDisconnFrame = document.createElement('iframe');
const urlParams = {};
urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM] = 't';
urlParams[FIREBASE_LONGPOLL_ID_PARAM] = id;
urlParams[FIREBASE_LONGPOLL_PW_PARAM] = pw;
this.myDisconnFrame.src = this.urlFn(urlParams);
this.myDisconnFrame.style.display = 'none';
document.body.appendChild(this.myDisconnFrame);
}
/**
* Used to track the bytes received by this client
*/
incrementIncomingBytes_(args) {
// TODO: This is an annoying perf hit just to track the number of incoming bytes. Maybe it should be opt-in.
const bytesReceived = stringify(args).length;
this.bytesReceived += bytesReceived;
this.stats_.incrementCounter('bytes_received', bytesReceived);
}
}
/*********************************************************************************************
* A wrapper around an iframe that is used as a long-polling script holder.
*********************************************************************************************/
class FirebaseIFrameScriptHolder {
/**
* @param commandCB - The callback to be called when control commands are recevied from the server.
* @param onMessageCB - The callback to be triggered when responses arrive from the server.
* @param onDisconnect - The callback to be triggered when this tag holder is closed
* @param urlFn - A function that provides the URL of the endpoint to send data to.
*/
constructor(commandCB, onMessageCB, onDisconnect, urlFn) {
this.onDisconnect = onDisconnect;
this.urlFn = urlFn;
//We maintain a count of all of the outstanding requests, because if we have too many active at once it can cause
//problems in some browsers.
this.outstandingRequests = new Set();
//A queue of the pending segments waiting for transmission to the server.
this.pendingSegs = [];
//A serial number. We use this for two things:
// 1) A way to ensure the browser doesn't cache responses to polls
// 2) A way to make the server aware when long-polls arrive in a different order than we started them. The
// server needs to release both polls in this case or it will cause problems in Opera since Opera can only execute
// JSONP code in the order it was added to the iframe.
this.currentSerial = Math.floor(Math.random() * 100000000);
// This gets set to false when we're "closing down" the connection (e.g. we're switching transports but there's still
// incoming data from the server that we're waiting for).
this.sendNewPolls = true;
if (!isNodeSdk()) {
//Each script holder registers a couple of uniquely named callbacks with the window. These are called from the
//iframes where we put the long-polling script tags. We have two callbacks:
// 1) Command Callback - Triggered for control issues, like starting a connection.
// 2) Message Callback - Triggered when new data arrives.
this.uniqueCallbackIdentifier = LUIDGenerator();
window[FIREBASE_LONGPOLL_COMMAND_CB_NAME + this.uniqueCallbackIdentifier] = commandCB;
window[FIREBASE_LONGPOLL_DATA_CB_NAME + this.uniqueCallbackIdentifier] = onMessageCB;
//Create an iframe for us to add script tags to.
this.myIFrame = FirebaseIFrameScriptHolder.createIFrame_();
// Set the iframe's contents.
let script = '';
// if we set a javascript url, it's IE and we need to set the document domain. The javascript url is sufficient
// for ie9, but ie8 needs to do it again in the document itself.
if (this.myIFrame.src &&
this.myIFrame.src.substr(0, 'javascript:'.length) === 'javascript:') {
const currentDomain = document.domain;
script = '<script>document.domain="' + currentDomain + '";</script>';
}
const iframeContents = '<html><body>' + script + '</body></html>';
try {
this.myIFrame.doc.open();
this.myIFrame.doc.write(iframeContents);
this.myIFrame.doc.close();
}
catch (e) {
log('frame writing exception');
if (e.stack) {
log(e.stack);
}
log(e);
}
}
else {
this.commandCB = commandCB;
this.onMessageCB = onMessageCB;
}
}
/**
* Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can
* actually use.
*/
static createIFrame_() {
const iframe = document.createElement('iframe');
iframe.style.display = 'none';
// This is necessary in order to initialize the document inside the iframe
if (document.body) {
document.body.appendChild(iframe);
try {
// If document.domain has been modified in IE, this will throw an error, and we need to set the
// domain of the iframe's document manually. We can do this via a javascript: url as the src attribute
// Also note that we must do this *after* the iframe has been appended to the page. Otherwise it doesn't work.
const a = iframe.contentWindow.document;
if (!a) {
// Apologies for the log-spam, I need to do something to keep closure from optimizing out the assignment above.
log('No IE domain setting required');
}
}
catch (e) {
const domain = document.domain;
iframe.src =
"javascript:void((function(){document.open();document.domain='" +
domain +
"';document.close();})())";
}
}
else {
// LongPollConnection attempts to delay initialization until the document is ready, so hopefully this
// never gets hit.
throw 'Document body has not initialized. Wait to initialize Firebase until after the document is ready.';
}
// Get the document of the iframe in a browser-specific way.
if (iframe.contentDocument) {
iframe.doc = iframe.contentDocument; // Firefox, Opera, Safari
}
else if (iframe.contentWindow) {
iframe.doc = iframe.contentWindow.document; // Internet Explorer
// eslint-disable-next-line @typescript-eslint/no-explicit-any
}
else if (iframe.document) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
iframe.doc = iframe.document; //others?
}
return iframe;
}
/**
* Cancel all outstanding queries and remove the frame.
*/
close() {
//Mark this iframe as dead, so no new requests are sent.
this.alive = false;
if (this.myIFrame) {
//We have to actually remove all of the html inside this iframe before removing it from the
//window, or IE will continue loading and executing the script tags we've already added, which
//can lead to some errors being thrown. Setting innerHTML seems to be the easiest way to do this.
this.myIFrame.doc.body.innerHTML = '';
setTimeout(() => {
if (this.myIFrame !== null) {
document.body.removeChild(this.myIFrame);
this.myIFrame = null;
}
}, Math.floor(0));
}
// Protect from being called recursively.
const onDisconnect = this.onDisconnect;
if (onDisconnect) {
this.onDisconnect = null;
onDisconnect();
}
}
/**
* Actually start the long-polling session by adding the first script tag(s) to the iframe.
* @param id - The ID of this connection
* @param pw - The password for this connection
*/
startLongPoll(id, pw) {
this.myID = id;
this.myPW = pw;
this.alive = true;
//send the initial request. If there are requests queued, make sure that we transmit as many as we are currently able to.
while (this.newRequest_()) { }
}
/**
* This is called any time someone might want a script tag to be added. It adds a script tag when there aren't
* too many outstanding requests and we are still alive.
*
* If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if
* needed.
*/
newRequest_() {
// We keep one outstanding request open all the time to receive data, but if we need to send data
// (pendingSegs.length > 0) then we create a new request to send the data. The server will automatically
// close the old request.
if (this.alive &&
this.sendNewPolls &&
this.outstandingRequests.size < (this.pendingSegs.length > 0 ? 2 : 1)) {
//construct our url
this.currentSerial++;
const urlParams = {};
urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;
urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;
urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = this.currentSerial;
let theURL = this.urlFn(urlParams);
//Now add as much data as we can.
let curDataString = '';
let i = 0;
while (this.pendingSegs.length > 0) {
//first, lets see if the next segment will fit.
const nextSeg = this.pendingSegs[0];
if (nextSeg.d.length +
SEG_HEADER_SIZE +
curDataString.length <=
MAX_URL_DATA_SIZE) {
//great, the segment will fit. Lets append it.
const theSeg = this.pendingSegs.shift();
curDataString =
curDataString +
'&' +
FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM +
i +
'=' +
theSeg.seg +
'&' +
FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET +
i +
'=' +
theSeg.ts +
'&' +
FIREBASE_LONGPOLL_DATA_PARAM +
i +
'=' +
theSeg.d;
i++;
}
else {
break;
}
}
theURL = theURL + curDataString;
this.addLongPollTag_(theURL, this.currentSerial);
return true;
}
else {
return false;
}
}
/**
* Queue a packet for transmission to the server.
* @param segnum - A sequential id for this packet segment used for reassembly
* @param totalsegs - The total number of segments in this packet
* @param data - The data for this segment.
*/
enqueueSegment(segnum, totalsegs, data) {
//add this to the queue of segments to send.
this.pendingSegs.push({ seg: segnum, ts: totalsegs, d: data });
//send the data immediately if there isn't already data being transmitted, unless
//startLongPoll hasn't been called yet.
if (this.alive) {
this.newRequest_();
}
}
/**
* Add a script tag for a regular long-poll request.
* @param url - The URL of the script tag.
* @param serial - The serial number of the request.
*/
addLongPollTag_(url, serial) {
//remember that we sent this request.
this.outstandingRequests.add(serial);
const doNewRequest = () => {
this.outstandingRequests.delete(serial);
this.newRequest_();
};
// If this request doesn't return on its own accord (by the server sending us some data), we'll
// create a new one after the KEEPALIVE interval to make sure we always keep a fresh request open.
const keepaliveTimeout = setTimeout(doNewRequest, Math.floor(KEEPALIVE_REQUEST_INTERVAL));
const readyStateCB = () => {
// Request completed. Cancel the keepalive.
clearTimeout(keepaliveTimeout);
// Trigger a new request so we can continue receiving data.
doNewRequest();
};
this.addTag(url, readyStateCB);
}
/**
* Add an arbitrary script tag to the iframe.
* @param url - The URL for the script tag source.
* @param loadCB - A callback to be triggered once the script has loaded.
*/
addTag(url, loadCB) {
if (isNodeSdk()) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
this.doNodeLongPoll(url, loadCB);
}
else {
setTimeout(() => {
try {
// if we're already closed, don't add this poll
if (!this.sendNewPolls) {
return;
}
const newScript = this.myIFrame.doc.createElement('script');
newScript.type = 'text/javascript';
newScript.async = true;
newScript.src = url;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
newScript.onload = newScript.onreadystatechange = function () {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const rstate = newScript.readyState;
if (!rstate || rstate === 'loaded' || rstate === 'complete') {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
newScript.onload = newScript.onreadystatechange = null;
if (newScript.parentNode) {
newScript.parentNode.removeChild(newScript);
}
loadCB();
}
};
newScript.onerror = () => {
log('Long-poll script failed to load: ' + url);
this.sendNewPolls = false;
this.close();
};
this.myIFrame.doc.body.appendChild(newScript);
}
catch (e) {
// TODO: we should make this error visible somehow
}
}, Math.floor(1));
}
}
}
/**
* @license
* Copyright 2019 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/** The semver (www.semver.org) version of the SDK. */
let SDK_VERSION = '';
// SDK_VERSION should be set before any database instance is created
function setSDKVersion(version) {
SDK_VERSION = version;
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const WEBSOCKET_MAX_FRAME_SIZE = 16384;
const WEBSOCKET_KEEPALIVE_INTERVAL = 45000;
let WebSocketImpl = null;
if (typeof MozWebSocket !== 'undefined') {
WebSocketImpl = MozWebSocket;
}
else if (typeof WebSocket !== 'undefined') {
WebSocketImpl = WebSocket;
}
/**
* Create a new websocket connection with the given callbacks.
*/
class WebSocketConnection {
/**
* @param connId identifier for this transport
* @param repoInfo The info for the websocket endpoint.
* @param applicationId The Firebase App ID for this project.
* @param appCheckToken The App Check Token for this client.
* @param authToken The Auth Token for this client.
* @param transportSessionId Optional transportSessionId if this is connecting
* to an existing transport session
* @param lastSessionId Optional lastSessionId if there was a previous
* connection
*/
constructor(connId, repoInfo, applicationId, appCheckToken, authToken, transportSessionId, lastSessionId) {
this.connId = connId;
this.applicationId = applicationId;
this.appCheckToken = appCheckToken;
this.authToken = authToken;
this.keepaliveTimer = null;
this.frames = null;
this.totalFrames = 0;
this.bytesSent = 0;
this.bytesReceived = 0;
this.log_ = logWrapper(this.connId);
this.stats_ = statsManagerGetCollection(repoInfo);
this.connURL = WebSocketConnection.connectionURL_(repoInfo, transportSessionId, lastSessionId, appCheckToken);
this.nodeAdmin = repoInfo.nodeAdmin;
}
/**
* @param repoInfo - The info for the websocket endpoint.
* @param transportSessionId - Optional transportSessionId if this is connecting to an existing transport
* session
* @param lastSessionId - Optional lastSessionId if there was a previous connection
* @returns connection url
*/
static connectionURL_(repoInfo, transportSessionId, lastSessionId, appCheckToken) {
const urlParams = {};
urlParams[VERSION_PARAM] = PROTOCOL_VERSION;
if (!isNodeSdk() &&
typeof location !== 'undefined' &&
location.hostname &&
FORGE_DOMAIN_RE.test(location.hostname)) {
urlParams[REFERER_PARAM] = FORGE_REF;
}
if (transportSessionId) {
urlParams[TRANSPORT_SESSION_PARAM] = transportSessionId;
}
if (lastSessionId) {
urlParams[LAST_SESSION_PARAM] = lastSessionId;
}
if (appCheckToken) {
urlParams[APP_CHECK_TOKEN_PARAM] = appCheckToken;
}
return repoInfoConnectionURL(repoInfo, WEBSOCKET, urlParams);
}
/**
* @param onMessage - Callback when messages arrive
* @param onDisconnect - Callback with connection lost.
*/
open(onMessage, onDisconnect) {
this.onDisconnect = onDisconnect;
this.onMessage = onMessage;
this.log_('Websocket connecting to ' + this.connURL);
this.everConnected_ = false;
// Assume failure until proven otherwise.
PersistentStorage.set('previous_websocket_failure', true);
try {
if (isNodeSdk()) {
const device = this.nodeAdmin ? 'AdminNode' : 'Node';
// UA Format: Firebase/<wire_protocol>/<sdk_version>/<platform>/<device>
const options = {
headers: {
'User-Agent': `Firebase/${PROTOCOL_VERSION}/${SDK_VERSION}/${process.platform}/${device}`,
'X-Firebase-GMPID': this.applicationId || ''
}
};
// If using Node with admin creds, AppCheck-related checks are unnecessary.
// Note that we send the credentials here even if they aren't admin credentials, which is
// not a problem.
// Note that this header is just used to bypass appcheck, and the token should still be sent
// through the websocket connection once it is established.
if (this.authToken) {
options.headers['Authorization'] = `Bearer ${this.authToken}`;
}
if (this.appCheckToken) {
options.headers['X-Firebase-AppCheck'] = this.appCheckToken;
}
// Plumb appropriate http_proxy environment variable into faye-websocket if it exists.
const env = process['env'];
const proxy = this.connURL.indexOf('wss://') === 0
? env['HTTPS_PROXY'] || env['https_proxy']
: env['HTTP_PROXY'] || env['http_proxy'];
if (proxy) {
options['proxy'] = { origin: proxy };
}
this.mySock = new WebSocketImpl(this.connURL, [], options);
}
else {
const options = {
headers: {
'X-Firebase-GMPID': this.applicationId || '',
'X-Firebase-AppCheck': this.appCheckToken || ''
}
};
this.mySock = new WebSocketImpl(this.connURL, [], options);
}
}
catch (e) {
this.log_('Error instantiating WebSocket.');
const error = e.message || e.data;
if (error) {
this.log_(error);
}
this.onClosed_();
return;
}
this.mySock.onopen = () => {
this.log_('Websocket connected.');
this.everConnected_ = true;
};
this.mySock.onclose = () => {
this.log_('Websocket connection was disconnected.');
this.mySock = null;
this.onClosed_();
};
this.mySock.onmessage = m => {
this.handleIncomingFrame(m);
};
this.mySock.onerror = e => {
this.log_('WebSocket error. Closing connection.');
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const error = e.message || e.data;
if (error) {
this.log_(error);
}
this.onClosed_();
};
}
/**
* No-op for websockets, we don't need to do anything once the connection is confirmed as open
*/
start() { }
static forceDisallow() {
WebSocketConnection.forceDisallow_ = true;
}
static isAvailable() {
let isOldAndroid = false;
if (typeof navigator !== 'undefined' && navigator.userAgent) {
const oldAndroidRegex = /Android ([0-9]{0,}\.[0-9]{0,})/;
const oldAndroidMatch = navigator.userAgent.match(oldAndroidRegex);
if (oldAndroidMatch && oldAndroidMatch.length > 1) {
if (parseFloat(oldAndroidMatch[1]) < 4.4) {
isOldAndroid = true;
}
}
}
return (!isOldAndroid &&
WebSocketImpl !== null &&
!WebSocketConnection.forceDisallow_);
}
/**
* Returns true if we previously failed to connect with this transport.
*/
static previouslyFailed() {
// If our persistent storage is actually only in-memory storage,
// we default to assuming that it previously failed to be safe.
return (PersistentStorage.isInMemoryStorage ||
PersistentStorage.get('previous_websocket_failure') === true);
}
markConnectionHealthy() {
PersistentStorage.remove('previous_websocket_failure');
}
appendFrame_(data) {
this.frames.push(data);
if (this.frames.length === this.totalFrames) {
const fullMess = this.frames.join('');
this.frames = null;
const jsonMess = jsonEval(fullMess);
//handle the message
this.onMessage(jsonMess);
}
}
/**
* @param frameCount - The number of frames we are expecting from the server
*/
handleNewFrameCount_(frameCount) {
this.totalFrames = frameCount;
this.frames = [];
}
/**
* Attempts to parse a frame count out of some text. If it can't, assumes a value of 1
* @returns Any remaining data to be process, or null if there is none
*/
extractFrameCount_(data) {
assert(this.frames === null, 'We already have a frame buffer');
// TODO: The server is only supposed to send up to 9999 frames (i.e. length <= 4), but that isn't being enforced
// currently. So allowing larger frame counts (length <= 6). See https://app.asana.com/0/search/8688598998380/8237608042508
if (data.length <= 6) {
const frameCount = Number(data);
if (!isNaN(frameCount)) {
this.handleNewFrameCount_(frameCount);
return null;
}
}
this.handleNewFrameCount_(1);
return data;
}
/**
* Process a websocket frame that has arrived from the server.
* @param mess - The frame data
*/
handleIncomingFrame(mess) {
if (this.mySock === null) {
return; // Chrome apparently delivers incoming packets even after we .close() the connection sometimes.
}
const data = mess['data'];
this.bytesReceived += data.length;
this.stats_.incrementCounter('bytes_received', data.length);
this.resetKeepAlive();
if (this.frames !== null) {
// we're buffering
this.appendFrame_(data);
}
else {
// try to parse out a frame count, otherwise, assume 1 and process it
const remainingData = this.extractFrameCount_(data);
if (remainingData !== null) {
this.appendFrame_(remainingData);
}
}
}
/**
* Send a message to the server
* @param data - The JSON object to transmit
*/
send(data) {
this.resetKeepAlive();
const dataStr = stringify(data);
this.bytesSent += dataStr.length;
this.stats_.incrementCounter('bytes_sent', dataStr.length);
//We can only fit a certain amount in each websocket frame, so we need to split this request
//up into multiple pieces if it doesn't fit in one request.
const dataSegs = splitStringBySize(dataStr, WEBSOCKET_MAX_FRAME_SIZE);
//Send the length header
if (dataSegs.length > 1) {
this.sendString_(String(dataSegs.length));
}
//Send the actual data in segments.
for (let i = 0; i < dataSegs.length; i++) {
this.sendString_(dataSegs[i]);
}
}
shutdown_() {
this.isClosed_ = true;
if (this.keepaliveTimer) {
clearInterval(this.keepaliveTimer);
this.keepaliveTimer = null;
}
if (this.mySock) {
this.mySock.close();
this.mySock = null;
}
}
onClosed_() {
if (!this.isClosed_) {
this.log_('WebSocket is closing itself');
this.shutdown_();
// since this is an internal close, trigger the close listener
if (this.onDisconnect) {
this.onDisconnect(this.everConnected_);
this.onDisconnect = null;
}
}
}
/**
* External-facing close handler.
* Close the websocket and kill the connection.
*/
close() {
if (!this.isClosed_) {
this.log_('WebSocket is being closed');
this.shutdown_();
}
}
/**
* Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after
* the last activity.
*/
resetKeepAlive() {
clearInterval(this.keepaliveTimer);
this.keepaliveTimer = setInterval(() => {
//If there has been no websocket activity for a while, send a no-op
if (this.mySock) {
this.sendString_('0');
}
this.resetKeepAlive();
// eslint-disable-next-line @typescript-eslint/no-explicit-any
}, Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL));
}
/**
* Send a string over the websocket.
*
* @param str - String to send.
*/
sendString_(str) {
// Firefox seems to sometimes throw exceptions (NS_ERROR_UNEXPECTED) from websocket .send()
// calls for some unknown reason. We treat these as an error and disconnect.
// See https://app.asana.com/0/58926111402292/68021340250410
try {
this.mySock.send(str);
}
catch (e) {
this.log_('Exception thrown from WebSocket.send():', e.message || e.data, 'Closing connection.');
setTimeout(this.onClosed_.bind(this), 0);
}
}
}
/**
* Number of response before we consider the connection "healthy."
*/
WebSocketConnection.responsesRequiredToBeHealthy = 2;
/**
* Time to wait for the connection te become healthy before giving up.
*/
WebSocketConnection.healthyTimeout = 30000;
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Currently simplistic, this class manages what transport a Connection should use at various stages of its
* lifecycle.
*
* It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if
* they are available.
*/
class TransportManager {
/**
* @param repoInfo - Metadata around the namespace we're connecting to
*/
constructor(repoInfo) {
this.initTransports_(repoInfo);
}
static get ALL_TRANSPORTS() {
return [BrowserPollConnection, WebSocketConnection];
}
initTransports_(repoInfo) {
const isWebSocketsAvailable = WebSocketConnection && WebSocketConnection['isAvailable']();
let isSkipPollConnection = isWebSocketsAvailable && !WebSocketConnection.previouslyFailed();
if (repoInfo.webSocketOnly) {
if (!isWebSocketsAvailable) {
warn("wss:// URL used, but browser isn't known to support websockets. Trying anyway.");
}
isSkipPollConnection = true;
}
if (isSkipPollConnection) {
this.transports_ = [WebSocketConnection];
}
else {
const transports = (this.transports_ = []);
for (const transport of TransportManager.ALL_TRANSPORTS) {
if (transport && transport['isAvailable']()) {
transports.push(transport);
}
}
}
}
/**
* @returns The constructor for the initial transport to use
*/
initialTransport() {
if (this.transports_.length > 0) {
return this.transports_[0];
}
else {
throw new Error('No transports available');
}
}
/**
* @returns The constructor for the next transport, or null
*/
upgradeTransport() {
if (this.transports_.length > 1) {
return this.transports_[1];
}
else {
return null;
}
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Abort upgrade attempt if it takes longer than 60s.
const UPGRADE_TIMEOUT = 60000;
// For some transports (WebSockets), we need to "validate" the transport by exchanging a few requests and responses.
// If we haven't sent enough requests within 5s, we'll start sending noop ping requests.
const DELAY_BEFORE_SENDING_EXTRA_REQUESTS = 5000;
// If the initial data sent triggers a lot of bandwidth (i.e. it's a large put or a listen for a large amount of data)
// then we may not be able to exchange our ping/pong requests within the healthy timeout. So if we reach the timeout
// but we've sent/received enough bytes, we don't cancel the connection.
const BYTES_SENT_HEALTHY_OVERRIDE = 10 * 1024;
const BYTES_RECEIVED_HEALTHY_OVERRIDE = 100 * 1024;
const MESSAGE_TYPE = 't';
const MESSAGE_DATA = 'd';
const CONTROL_SHUTDOWN = 's';
const CONTROL_RESET = 'r';
const CONTROL_ERROR = 'e';
const CONTROL_PONG = 'o';
const SWITCH_ACK = 'a';
const END_TRANSMISSION = 'n';
const PING = 'p';
const SERVER_HELLO = 'h';
/**
* Creates a new real-time connection to the server using whichever method works
* best in the current browser.
*/
class Connection {
/**
* @param id - an id for this connection
* @param repoInfo_ - the info for the endpoint to connect to
* @param applicationId_ - the Firebase App ID for this project
* @param appCheckToken_ - The App Check Token for this device.
* @param authToken_ - The auth token for this session.
* @param onMessage_ - the callback to be triggered when a server-push message arrives
* @param onReady_ - the callback to be triggered when this connection is ready to send messages.
* @param onDisconnect_ - the callback to be triggered when a connection was lost
* @param onKill_ - the callback to be triggered when this connection has permanently shut down.
* @param lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server
*/
constructor(id, repoInfo_, applicationId_, appCheckToken_, authToken_, onMessage_, onReady_, onDisconnect_, onKill_, lastSessionId) {
this.id = id;
this.repoInfo_ = repoInfo_;
this.applicationId_ = applicationId_;
this.appCheckToken_ = appCheckToken_;
this.authToken_ = authToken_;
this.onMessage_ = onMessage_;
this.onReady_ = onReady_;
this.onDisconnect_ = onDisconnect_;
this.onKill_ = onKill_;
this.lastSessionId = lastSessionId;
this.connectionCount = 0;
this.pendingDataMessages = [];
this.state_ = 0 /* CONNECTING */;
this.log_ = logWrapper('c:' + this.id + ':');
this.transportManager_ = new TransportManager(repoInfo_);
this.log_('Connection created');
this.start_();
}
/**
* Starts a connection attempt
*/
start_() {
const conn = this.transportManager_.initialTransport();
this.conn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, null, this.lastSessionId);
// For certain transports (WebSockets), we need to send and receive several messages back and forth before we
// can consider the transport healthy.
this.primaryResponsesRequired_ = conn['responsesRequiredToBeHealthy'] || 0;
const onMessageReceived = this.connReceiver_(this.conn_);
const onConnectionLost = this.disconnReceiver_(this.conn_);
this.tx_ = this.conn_;
this.rx_ = this.conn_;
this.secondaryConn_ = null;
this.isHealthy_ = false;
/*
* Firefox doesn't like when code from one iframe tries to create another iframe by way of the parent frame.
* This can occur in the case of a redirect, i.e. we guessed wrong on what server to connect to and received a reset.
* Somehow, setTimeout seems to make this ok. That doesn't make sense from a security perspective, since you should
* still have the context of your originating frame.
*/
setTimeout(() => {
// this.conn_ gets set to null in some of the tests. Check to make sure it still exists before using it
this.conn_ && this.conn_.open(onMessageReceived, onConnectionLost);
}, Math.floor(0));
const healthyTimeoutMS = conn['healthyTimeout'] || 0;
if (healthyTimeoutMS > 0) {
this.healthyTimeout_ = setTimeoutNonBlocking(() => {
this.healthyTimeout_ = null;
if (!this.isHealthy_) {
if (this.conn_ &&
this.conn_.bytesReceived > BYTES_RECEIVED_HEALTHY_OVERRIDE) {
this.log_('Connection exceeded healthy timeout but has received ' +
this.conn_.bytesReceived +
' bytes. Marking connection healthy.');
this.isHealthy_ = true;
this.conn_.markConnectionHealthy();
}
else if (this.conn_ &&
this.conn_.bytesSent > BYTES_SENT_HEALTHY_OVERRIDE) {
this.log_('Connection exceeded healthy timeout but has sent ' +
this.conn_.bytesSent +
' bytes. Leaving connection alive.');
// NOTE: We don't want to mark it healthy, since we have no guarantee that the bytes have made it to
// the server.
}
else {
this.log_('Closing unhealthy connection after timeout.');
this.close();
}
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
}, Math.floor(healthyTimeoutMS));
}
}
nextTransportId_() {
return 'c:' + this.id + ':' + this.connectionCount++;
}
disconnReceiver_(conn) {
return everConnected => {
if (conn === this.conn_) {
this.onConnectionLost_(everConnected);
}
else if (conn === this.secondaryConn_) {
this.log_('Secondary connection lost.');
this.onSecondaryConnectionLost_();
}
else {
this.log_('closing an old connection');
}
};
}
connReceiver_(conn) {
return (message) => {
if (this.state_ !== 2 /* DISCONNECTED */) {
if (conn === this.rx_) {
this.onPrimaryMessageReceived_(message);
}
else if (conn === this.secondaryConn_) {
this.onSecondaryMessageReceived_(message);
}
else {
this.log_('message on old connection');
}
}
};
}
/**
* @param dataMsg - An arbitrary data message to be sent to the server
*/
sendRequest(dataMsg) {
// wrap in a data message envelope and send it on
const msg = { t: 'd', d: dataMsg };
this.sendData_(msg);
}
tryCleanupConnection() {
if (this.tx_ === this.secondaryConn_ && this.rx_ === this.secondaryConn_) {
this.log_('cleaning up and promoting a connection: ' + this.secondaryConn_.connId);
this.conn_ = this.secondaryConn_;
this.secondaryConn_ = null;
// the server will shutdown the old connection
}
}
onSecondaryControl_(controlData) {
if (MESSAGE_TYPE in controlData) {
const cmd = controlData[MESSAGE_TYPE];
if (cmd === SWITCH_ACK) {
this.upgradeIfSecondaryHealthy_();
}
else if (cmd === CONTROL_RESET) {
// Most likely the session wasn't valid. Abandon the switch attempt
this.log_('Got a reset on secondary, closing it');
this.secondaryConn_.close();
// If we were already using this connection for something, than we need to fully close
if (this.tx_ === this.secondaryConn_ ||
this.rx_ === this.secondaryConn_) {
this.close();
}
}
else if (cmd === CONTROL_PONG) {
this.log_('got pong on secondary.');
this.secondaryResponsesRequired_--;
this.upgradeIfSecondaryHealthy_();
}
}
}
onSecondaryMessageReceived_(parsedData) {
const layer = requireKey('t', parsedData);
const data = requireKey('d', parsedData);
if (layer === 'c') {
this.onSecondaryControl_(data);
}
else if (layer === 'd') {
// got a data message, but we're still second connection. Need to buffer it up
this.pendingDataMessages.push(data);
}
else {
throw new Error('Unknown protocol layer: ' + layer);
}
}
upgradeIfSecondaryHealthy_() {
if (this.secondaryResponsesRequired_ <= 0) {
this.log_('Secondary connection is healthy.');
this.isHealthy_ = true;
this.secondaryConn_.markConnectionHealthy();
this.proceedWithUpgrade_();
}
else {
// Send a ping to make sure the connection is healthy.
this.log_('sending ping on secondary.');
this.secondaryConn_.send({ t: 'c', d: { t: PING, d: {} } });
}
}
proceedWithUpgrade_() {
// tell this connection to consider itself open
this.secondaryConn_.start();
// send ack
this.log_('sending client ack on secondary');
this.secondaryConn_.send({ t: 'c', d: { t: SWITCH_ACK, d: {} } });
// send end packet on primary transport, switch to sending on this one
// can receive on this one, buffer responses until end received on primary transport
this.log_('Ending transmission on primary');
this.conn_.send({ t: 'c', d: { t: END_TRANSMISSION, d: {} } });
this.tx_ = this.secondaryConn_;
this.tryCleanupConnection();
}
onPrimaryMessageReceived_(parsedData) {
// Must refer to parsedData properties in quotes, so closure doesn't touch them.
const layer = requireKey('t', parsedData);
const data = requireKey('d', parsedData);
if (layer === 'c') {
this.onControl_(data);
}
else if (layer === 'd') {
this.onDataMessage_(data);
}
}
onDataMessage_(message) {
this.onPrimaryResponse_();
// We don't do anything with data messages, just kick them up a level
this.onMessage_(message);
}
onPrimaryResponse_() {
if (!this.isHealthy_) {
this.primaryResponsesRequired_--;
if (this.primaryResponsesRequired_ <= 0) {
this.log_('Primary connection is healthy.');
this.isHealthy_ = true;
this.conn_.markConnectionHealthy();
}
}
}
onControl_(controlData) {
const cmd = requireKey(MESSAGE_TYPE, controlData);
if (MESSAGE_DATA in controlData) {
const payload = controlData[MESSAGE_DATA];
if (cmd === SERVER_HELLO) {
this.onHandshake_(payload);
}
else if (cmd === END_TRANSMISSION) {
this.log_('recvd end transmission on primary');
this.rx_ = this.secondaryConn_;
for (let i = 0; i < this.pendingDataMessages.length; ++i) {
this.onDataMessage_(this.pendingDataMessages[i]);
}
this.pendingDataMessages = [];
this.tryCleanupConnection();
}
else if (cmd === CONTROL_SHUTDOWN) {
// This was previously the 'onKill' callback passed to the lower-level connection
// payload in this case is the reason for the shutdown. Generally a human-readable error
this.onConnectionShutdown_(payload);
}
else if (cmd === CONTROL_RESET) {
// payload in this case is the host we should contact
this.onReset_(payload);
}
else if (cmd === CONTROL_ERROR) {
error('Server Error: ' + payload);
}
else if (cmd === CONTROL_PONG) {
this.log_('got pong on primary.');
this.onPrimaryResponse_();
this.sendPingOnPrimaryIfNecessary_();
}
else {
error('Unknown control packet command: ' + cmd);
}
}
}
/**
* @param handshake - The handshake data returned from the server
*/
onHandshake_(handshake) {
const timestamp = handshake.ts;
const version = handshake.v;
const host = handshake.h;
this.sessionId = handshake.s;
this.repoInfo_.host = host;
// if we've already closed the connection, then don't bother trying to progress further
if (this.state_ === 0 /* CONNECTING */) {
this.conn_.start();
this.onConnectionEstablished_(this.conn_, timestamp);
if (PROTOCOL_VERSION !== version) {
warn('Protocol version mismatch detected');
}
// TODO: do we want to upgrade? when? maybe a delay?
this.tryStartUpgrade_();
}
}
tryStartUpgrade_() {
const conn = this.transportManager_.upgradeTransport();
if (conn) {
this.startUpgrade_(conn);
}
}
startUpgrade_(conn) {
this.secondaryConn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, this.sessionId);
// For certain transports (WebSockets), we need to send and receive several messages back and forth before we
// can consider the transport healthy.
this.secondaryResponsesRequired_ =
conn['responsesRequiredToBeHealthy'] || 0;
const onMessage = this.connReceiver_(this.secondaryConn_);
const onDisconnect = this.disconnReceiver_(this.secondaryConn_);
this.secondaryConn_.open(onMessage, onDisconnect);
// If we haven't successfully upgraded after UPGRADE_TIMEOUT, give up and kill the secondary.
setTimeoutNonBlocking(() => {
if (this.secondaryConn_) {
this.log_('Timed out trying to upgrade.');
this.secondaryConn_.close();
}
}, Math.floor(UPGRADE_TIMEOUT));
}
onReset_(host) {
this.log_('Reset packet received. New host: ' + host);
this.repoInfo_.host = host;
// TODO: if we're already "connected", we need to trigger a disconnect at the next layer up.
// We don't currently support resets after the connection has already been established
if (this.state_ === 1 /* CONNECTED */) {
this.close();
}
else {
// Close whatever connections we have open and start again.
this.closeConnections_();
this.start_();
}
}
onConnectionEstablished_(conn, timestamp) {
this.log_('Realtime connection established.');
this.conn_ = conn;
this.state_ = 1 /* CONNECTED */;
if (this.onReady_) {
this.onReady_(timestamp, this.sessionId);
this.onReady_ = null;
}
// If after 5 seconds we haven't sent enough requests to the server to get the connection healthy,
// send some pings.
if (this.primaryResponsesRequired_ === 0) {
this.log_('Primary connection is healthy.');
this.isHealthy_ = true;
}
else {
setTimeoutNonBlocking(() => {
this.sendPingOnPrimaryIfNecessary_();
}, Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));
}
}
sendPingOnPrimaryIfNecessary_() {
// If the connection isn't considered healthy yet, we'll send a noop ping packet request.
if (!this.isHealthy_ && this.state_ === 1 /* CONNECTED */) {
this.log_('sending ping on primary.');
this.sendData_({ t: 'c', d: { t: PING, d: {} } });
}
}
onSecondaryConnectionLost_() {
const conn = this.secondaryConn_;
this.secondaryConn_ = null;
if (this.tx_ === conn || this.rx_ === conn) {
// we are relying on this connection already in some capacity. Therefore, a failure is real
this.close();
}
}
/**
* @param everConnected - Whether or not the connection ever reached a server. Used to determine if
* we should flush the host cache
*/
onConnectionLost_(everConnected) {
this.conn_ = null;
// NOTE: IF you're seeing a Firefox error for this line, I think it might be because it's getting
// called on window close and RealtimeState.CONNECTING is no longer defined. Just a guess.
if (!everConnected && this.state_ === 0 /* CONNECTING */) {
this.log_('Realtime connection failed.');
// Since we failed to connect at all, clear any cached entry for this namespace in case the machine went away
if (this.repoInfo_.isCacheableHost()) {
PersistentStorage.remove('host:' + this.repoInfo_.host);
// reset the internal host to what we would show the user, i.e. <ns>.firebaseio.com
this.repoInfo_.internalHost = this.repoInfo_.host;
}
}
else if (this.state_ === 1 /* CONNECTED */) {
this.log_('Realtime connection lost.');
}
this.close();
}
onConnectionShutdown_(reason) {
this.log_('Connection shutdown command received. Shutting down...');
if (this.onKill_) {
this.onKill_(reason);
this.onKill_ = null;
}
// We intentionally don't want to fire onDisconnect (kill is a different case),
// so clear the callback.
this.onDisconnect_ = null;
this.close();
}
sendData_(data) {
if (this.state_ !== 1 /* CONNECTED */) {
throw 'Connection is not connected';
}
else {
this.tx_.send(data);
}
}
/**
* Cleans up this connection, calling the appropriate callbacks
*/
close() {
if (this.state_ !== 2 /* DISCONNECTED */) {
this.log_('Closing realtime connection.');
this.state_ = 2 /* DISCONNECTED */;
this.closeConnections_();
if (this.onDisconnect_) {
this.onDisconnect_();
this.onDisconnect_ = null;
}
}
}
closeConnections_() {
this.log_('Shutting down all connections');
if (this.conn_) {
this.conn_.close();
this.conn_ = null;
}
if (this.secondaryConn_) {
this.secondaryConn_.close();
this.secondaryConn_ = null;
}
if (this.healthyTimeout_) {
clearTimeout(this.healthyTimeout_);
this.healthyTimeout_ = null;
}
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Interface defining the set of actions that can be performed against the Firebase server
* (basically corresponds to our wire protocol).
*
* @interface
*/
class ServerActions {
put(pathString, data, onComplete, hash) { }
merge(pathString, data, onComplete, hash) { }
/**
* Refreshes the auth token for the current connection.
* @param token - The authentication token
*/
refreshAuthToken(token) { }
/**
* Refreshes the app check token for the current connection.
* @param token The app check token
*/
refreshAppCheckToken(token) { }
onDisconnectPut(pathString, data, onComplete) { }
onDisconnectMerge(pathString, data, onComplete) { }
onDisconnectCancel(pathString, onComplete) { }
reportStats(stats) { }
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Base class to be used if you want to emit events. Call the constructor with
* the set of allowed event names.
*/
class EventEmitter {
constructor(allowedEvents_) {
this.allowedEvents_ = allowedEvents_;
this.listeners_ = {};
assert(Array.isArray(allowedEvents_) && allowedEvents_.length > 0, 'Requires a non-empty array');
}
/**
* To be called by derived classes to trigger events.
*/
trigger(eventType, ...varArgs) {
if (Array.isArray(this.listeners_[eventType])) {
// Clone the list, since callbacks could add/remove listeners.
const listeners = [...this.listeners_[eventType]];
for (let i = 0; i < listeners.length; i++) {
listeners[i].callback.apply(listeners[i].context, varArgs);
}
}
}
on(eventType, callback, context) {
this.validateEventType_(eventType);
this.listeners_[eventType] = this.listeners_[eventType] || [];
this.listeners_[eventType].push({ callback, context });
const eventData = this.getInitialEvent(eventType);
if (eventData) {
callback.apply(context, eventData);
}
}
off(eventType, callback, context) {
this.validateEventType_(eventType);
const listeners = this.listeners_[eventType] || [];
for (let i = 0; i < listeners.length; i++) {
if (listeners[i].callback === callback &&
(!context || context === listeners[i].context)) {
listeners.splice(i, 1);
return;
}
}
}
validateEventType_(eventType) {
assert(this.allowedEvents_.find(et => {
return et === eventType;
}), 'Unknown event: ' + eventType);
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Monitors online state (as reported by window.online/offline events).
*
* The expectation is that this could have many false positives (thinks we are online
* when we're not), but no false negatives. So we can safely use it to determine when
* we definitely cannot reach the internet.
*/
class OnlineMonitor extends EventEmitter {
constructor() {
super(['online']);
this.online_ = true;
// We've had repeated complaints that Cordova apps can get stuck "offline", e.g.
// https://forum.ionicframework.com/t/firebase-connection-is-lost-and-never-come-back/43810
// It would seem that the 'online' event does not always fire consistently. So we disable it
// for Cordova.
if (typeof window !== 'undefined' &&
typeof window.addEventListener !== 'undefined' &&
!isMobileCordova()) {
window.addEventListener('online', () => {
if (!this.online_) {
this.online_ = true;
this.trigger('online', true);
}
}, false);
window.addEventListener('offline', () => {
if (this.online_) {
this.online_ = false;
this.trigger('online', false);
}
}, false);
}
}
static getInstance() {
return new OnlineMonitor();
}
getInitialEvent(eventType) {
assert(eventType === 'online', 'Unknown event type: ' + eventType);
return [this.online_];
}
currentlyOnline() {
return this.online_;
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class VisibilityMonitor extends EventEmitter {
constructor() {
super(['visible']);
let hidden;
let visibilityChange;
if (typeof document !== 'undefined' &&
typeof document.addEventListener !== 'undefined') {
if (typeof document['hidden'] !== 'undefined') {
// Opera 12.10 and Firefox 18 and later support
visibilityChange = 'visibilitychange';
hidden = 'hidden';
}
else if (typeof document['mozHidden'] !== 'undefined') {
visibilityChange = 'mozvisibilitychange';
hidden = 'mozHidden';
}
else if (typeof document['msHidden'] !== 'undefined') {
visibilityChange = 'msvisibilitychange';
hidden = 'msHidden';
}
else if (typeof document['webkitHidden'] !== 'undefined') {
visibilityChange = 'webkitvisibilitychange';
hidden = 'webkitHidden';
}
}
// Initially, we always assume we are visible. This ensures that in browsers
// without page visibility support or in cases where we are never visible
// (e.g. chrome extension), we act as if we are visible, i.e. don't delay
// reconnects
this.visible_ = true;
if (visibilityChange) {
document.addEventListener(visibilityChange, () => {
const visible = !document[hidden];
if (visible !== this.visible_) {
this.visible_ = visible;
this.trigger('visible', visible);
}
}, false);
}
}
static getInstance() {
return new VisibilityMonitor();
}
getInitialEvent(eventType) {
assert(eventType === 'visible', 'Unknown event type: ' + eventType);
return [this.visible_];
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const RECONNECT_MIN_DELAY = 1000;
const RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1000; // 5 minutes in milliseconds (Case: 1858)
const GET_CONNECT_TIMEOUT = 3 * 1000;
const RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1000; // 30 seconds for admin clients (likely to be a backend server)
const RECONNECT_DELAY_MULTIPLIER = 1.3;
const RECONNECT_DELAY_RESET_TIMEOUT = 30000; // Reset delay back to MIN_DELAY after being connected for 30sec.
const SERVER_KILL_INTERRUPT_REASON = 'server_kill';
// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.
const INVALID_TOKEN_THRESHOLD = 3;
/**
* Firebase connection. Abstracts wire protocol and handles reconnecting.
*
* NOTE: All JSON objects sent to the realtime connection must have property names enclosed
* in quotes to make sure the closure compiler does not minify them.
*/
class PersistentConnection extends ServerActions {
/**
* @param repoInfo_ - Data about the namespace we are connecting to
* @param applicationId_ - The Firebase App ID for this project
* @param onDataUpdate_ - A callback for new data from the server
*/
constructor(repoInfo_, applicationId_, onDataUpdate_, onConnectStatus_, onServerInfoUpdate_, authTokenProvider_, appCheckTokenProvider_, authOverride_) {
super();
this.repoInfo_ = repoInfo_;
this.applicationId_ = applicationId_;
this.onDataUpdate_ = onDataUpdate_;
this.onConnectStatus_ = onConnectStatus_;
this.onServerInfoUpdate_ = onServerInfoUpdate_;
this.authTokenProvider_ = authTokenProvider_;
this.appCheckTokenProvider_ = appCheckTokenProvider_;
this.authOverride_ = authOverride_;
// Used for diagnostic logging.
this.id = PersistentConnection.nextPersistentConnectionId_++;
this.log_ = logWrapper('p:' + this.id + ':');
this.interruptReasons_ = {};
this.listens = new Map();
this.outstandingPuts_ = [];
this.outstandingGets_ = [];
this.outstandingPutCount_ = 0;
this.outstandingGetCount_ = 0;
this.onDisconnectRequestQueue_ = [];
this.connected_ = false;
this.reconnectDelay_ = RECONNECT_MIN_DELAY;
this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;
this.securityDebugCallback_ = null;
this.lastSessionId = null;
this.establishConnectionTimer_ = null;
this.visible_ = false;
// Before we get connected, we keep a queue of pending messages to send.
this.requestCBHash_ = {};
this.requestNumber_ = 0;
this.realtime_ = null;
this.authToken_ = null;
this.appCheckToken_ = null;
this.forceTokenRefresh_ = false;
this.invalidAuthTokenCount_ = 0;
this.invalidAppCheckTokenCount_ = 0;
this.firstConnection_ = true;
this.lastConnectionAttemptTime_ = null;
this.lastConnectionEstablishedTime_ = null;
if (authOverride_ && !isNodeSdk()) {
throw new Error('Auth override specified in options, but not supported on non Node.js platforms');
}
VisibilityMonitor.getInstance().on('visible', this.onVisible_, this);
if (repoInfo_.host.indexOf('fblocal') === -1) {
OnlineMonitor.getInstance().on('online', this.onOnline_, this);
}
}
sendRequest(action, body, onResponse) {
const curReqNum = ++this.requestNumber_;
const msg = { r: curReqNum, a: action, b: body };
this.log_(stringify(msg));
assert(this.connected_, "sendRequest call when we're not connected not allowed.");
this.realtime_.sendRequest(msg);
if (onResponse) {
this.requestCBHash_[curReqNum] = onResponse;
}
}
get(query) {
this.initConnection_();
const deferred = new Deferred();
const request = {
p: query._path.toString(),
q: query._queryObject
};
const outstandingGet = {
action: 'g',
request,
onComplete: (message) => {
const payload = message['d'];
if (message['s'] === 'ok') {
this.onDataUpdate_(request['p'], payload,
/*isMerge*/ false,
/*tag*/ null);
deferred.resolve(payload);
}
else {
deferred.reject(payload);
}
}
};
this.outstandingGets_.push(outstandingGet);
this.outstandingGetCount_++;
const index = this.outstandingGets_.length - 1;
if (!this.connected_) {
setTimeout(() => {
const get = this.outstandingGets_[index];
if (get === undefined || outstandingGet !== get) {
return;
}
delete this.outstandingGets_[index];
this.outstandingGetCount_--;
if (this.outstandingGetCount_ === 0) {
this.outstandingGets_ = [];
}
this.log_('get ' + index + ' timed out on connection');
deferred.reject(new Error('Client is offline.'));
}, GET_CONNECT_TIMEOUT);
}
if (this.connected_) {
this.sendGet_(index);
}
return deferred.promise;
}
listen(query, currentHashFn, tag, onComplete) {
this.initConnection_();
const queryId = query._queryIdentifier;
const pathString = query._path.toString();
this.log_('Listen called for ' + pathString + ' ' + queryId);
if (!this.listens.has(pathString)) {
this.listens.set(pathString, new Map());
}
assert(query._queryParams.isDefault() || !query._queryParams.loadsAllData(), 'listen() called for non-default but complete query');
assert(!this.listens.get(pathString).has(queryId), 'listen() called twice for same path/queryId.');
const listenSpec = {
onComplete,
hashFn: currentHashFn,
query,
tag
};
this.listens.get(pathString).set(queryId, listenSpec);
if (this.connected_) {
this.sendListen_(listenSpec);
}
}
sendGet_(index) {
const get = this.outstandingGets_[index];
this.sendRequest('g', get.request, (message) => {
delete this.outstandingGets_[index];
this.outstandingGetCount_--;
if (this.outstandingGetCount_ === 0) {
this.outstandingGets_ = [];
}
if (get.onComplete) {
get.onComplete(message);
}
});
}
sendListen_(listenSpec) {
const query = listenSpec.query;
const pathString = query._path.toString();
const queryId = query._queryIdentifier;
this.log_('Listen on ' + pathString + ' for ' + queryId);
const req = { /*path*/ p: pathString };
const action = 'q';
// Only bother to send query if it's non-default.
if (listenSpec.tag) {
req['q'] = query._queryObject;
req['t'] = listenSpec.tag;
}
req[ /*hash*/'h'] = listenSpec.hashFn();
this.sendRequest(action, req, (message) => {
const payload = message[ /*data*/'d'];
const status = message[ /*status*/'s'];
// print warnings in any case...
PersistentConnection.warnOnListenWarnings_(payload, query);
const currentListenSpec = this.listens.get(pathString) &&
this.listens.get(pathString).get(queryId);
// only trigger actions if the listen hasn't been removed and readded
if (currentListenSpec === listenSpec) {
this.log_('listen response', message);
if (status !== 'ok') {
this.removeListen_(pathString, queryId);
}
if (listenSpec.onComplete) {
listenSpec.onComplete(status, payload);
}
}
});
}
static warnOnListenWarnings_(payload, query) {
if (payload && typeof payload === 'object' && contains(payload, 'w')) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const warnings = safeGet(payload, 'w');
if (Array.isArray(warnings) && ~warnings.indexOf('no_index')) {
const indexSpec = '".indexOn": "' + query._queryParams.getIndex().toString() + '"';
const indexPath = query._path.toString();
warn(`Using an unspecified index. Your data will be downloaded and ` +
`filtered on the client. Consider adding ${indexSpec} at ` +
`${indexPath} to your security rules for better performance.`);
}
}
}
refreshAuthToken(token) {
this.authToken_ = token;
this.log_('Auth token refreshed');
if (this.authToken_) {
this.tryAuth();
}
else {
//If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete
//the credential so we dont become authenticated next time we connect.
if (this.connected_) {
this.sendRequest('unauth', {}, () => { });
}
}
this.reduceReconnectDelayIfAdminCredential_(token);
}
reduceReconnectDelayIfAdminCredential_(credential) {
// NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).
// Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.
const isFirebaseSecret = credential && credential.length === 40;
if (isFirebaseSecret || isAdmin(credential)) {
this.log_('Admin auth credential detected. Reducing max reconnect time.');
this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
}
}
refreshAppCheckToken(token) {
this.appCheckToken_ = token;
this.log_('App check token refreshed');
if (this.appCheckToken_) {
this.tryAppCheck();
}
else {
//If we're connected we want to let the server know to unauthenticate us.
//If we're not connected, simply delete the credential so we dont become
// authenticated next time we connect.
if (this.connected_) {
this.sendRequest('unappeck', {}, () => { });
}
}
}
/**
* Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like
* a auth revoked (the connection is closed).
*/
tryAuth() {
if (this.connected_ && this.authToken_) {
const token = this.authToken_;
const authMethod = isValidFormat(token) ? 'auth' : 'gauth';
const requestData = { cred: token };
if (this.authOverride_ === null) {
requestData['noauth'] = true;
}
else if (typeof this.authOverride_ === 'object') {
requestData['authvar'] = this.authOverride_;
}
this.sendRequest(authMethod, requestData, (res) => {
const status = res[ /*status*/'s'];
const data = res[ /*data*/'d'] || 'error';
if (this.authToken_ === token) {
if (status === 'ok') {
this.invalidAuthTokenCount_ = 0;
}
else {
// Triggers reconnect and force refresh for auth token
this.onAuthRevoked_(status, data);
}
}
});
}
}
/**
* Attempts to authenticate with the given token. If the authentication
* attempt fails, it's triggered like the token was revoked (the connection is
* closed).
*/
tryAppCheck() {
if (this.connected_ && this.appCheckToken_) {
this.sendRequest('appcheck', { 'token': this.appCheckToken_ }, (res) => {
const status = res[ /*status*/'s'];
const data = res[ /*data*/'d'] || 'error';
if (status === 'ok') {
this.invalidAppCheckTokenCount_ = 0;
}
else {
this.onAppCheckRevoked_(status, data);
}
});
}
}
/**
* @inheritDoc
*/
unlisten(query, tag) {
const pathString = query._path.toString();
const queryId = query._queryIdentifier;
this.log_('Unlisten called for ' + pathString + ' ' + queryId);
assert(query._queryParams.isDefault() || !query._queryParams.loadsAllData(), 'unlisten() called for non-default but complete query');
const listen = this.removeListen_(pathString, queryId);
if (listen && this.connected_) {
this.sendUnlisten_(pathString, queryId, query._queryObject, tag);
}
}
sendUnlisten_(pathString, queryId, queryObj, tag) {
this.log_('Unlisten on ' + pathString + ' for ' + queryId);
const req = { /*path*/ p: pathString };
const action = 'n';
// Only bother sending queryId if it's non-default.
if (tag) {
req['q'] = queryObj;
req['t'] = tag;
}
this.sendRequest(action, req);
}
onDisconnectPut(pathString, data, onComplete) {
this.initConnection_();
if (this.connected_) {
this.sendOnDisconnect_('o', pathString, data, onComplete);
}
else {
this.onDisconnectRequestQueue_.push({
pathString,
action: 'o',
data,
onComplete
});
}
}
onDisconnectMerge(pathString, data, onComplete) {
this.initConnection_();
if (this.connected_) {
this.sendOnDisconnect_('om', pathString, data, onComplete);
}
else {
this.onDisconnectRequestQueue_.push({
pathString,
action: 'om',
data,
onComplete
});
}
}
onDisconnectCancel(pathString, onComplete) {
this.initConnection_();
if (this.connected_) {
this.sendOnDisconnect_('oc', pathString, null, onComplete);
}
else {
this.onDisconnectRequestQueue_.push({
pathString,
action: 'oc',
data: null,
onComplete
});
}
}
sendOnDisconnect_(action, pathString, data, onComplete) {
const request = { /*path*/ p: pathString, /*data*/ d: data };
this.log_('onDisconnect ' + action, request);
this.sendRequest(action, request, (response) => {
if (onComplete) {
setTimeout(() => {
onComplete(response[ /*status*/'s'], response[ /* data */'d']);
}, Math.floor(0));
}
});
}
put(pathString, data, onComplete, hash) {
this.putInternal('p', pathString, data, onComplete, hash);
}
merge(pathString, data, onComplete, hash) {
this.putInternal('m', pathString, data, onComplete, hash);
}
putInternal(action, pathString, data, onComplete, hash) {
this.initConnection_();
const request = {
/*path*/ p: pathString,
/*data*/ d: data
};
if (hash !== undefined) {
request[ /*hash*/'h'] = hash;
}
// TODO: Only keep track of the most recent put for a given path?
this.outstandingPuts_.push({
action,
request,
onComplete
});
this.outstandingPutCount_++;
const index = this.outstandingPuts_.length - 1;
if (this.connected_) {
this.sendPut_(index);
}
else {
this.log_('Buffering put: ' + pathString);
}
}
sendPut_(index) {
const action = this.outstandingPuts_[index].action;
const request = this.outstandingPuts_[index].request;
const onComplete = this.outstandingPuts_[index].onComplete;
this.outstandingPuts_[index].queued = this.connected_;
this.sendRequest(action, request, (message) => {
this.log_(action + ' response', message);
delete this.outstandingPuts_[index];
this.outstandingPutCount_--;
// Clean up array occasionally.
if (this.outstandingPutCount_ === 0) {
this.outstandingPuts_ = [];
}
if (onComplete) {
onComplete(message[ /*status*/'s'], message[ /* data */'d']);
}
});
}
reportStats(stats) {
// If we're not connected, we just drop the stats.
if (this.connected_) {
const request = { /*counters*/ c: stats };
this.log_('reportStats', request);
this.sendRequest(/*stats*/ 's', request, result => {
const status = result[ /*status*/'s'];
if (status !== 'ok') {
const errorReason = result[ /* data */'d'];
this.log_('reportStats', 'Error sending stats: ' + errorReason);
}
});
}
}
onDataMessage_(message) {
if ('r' in message) {
// this is a response
this.log_('from server: ' + stringify(message));
const reqNum = message['r'];
const onResponse = this.requestCBHash_[reqNum];
if (onResponse) {
delete this.requestCBHash_[reqNum];
onResponse(message[ /*body*/'b']);
}
}
else if ('error' in message) {
throw 'A server-side error has occurred: ' + message['error'];
}
else if ('a' in message) {
// a and b are action and body, respectively
this.onDataPush_(message['a'], message['b']);
}
}
onDataPush_(action, body) {
this.log_('handleServerMessage', action, body);
if (action === 'd') {
this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'],
/*isMerge*/ false, body['t']);
}
else if (action === 'm') {
this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'],
/*isMerge=*/ true, body['t']);
}
else if (action === 'c') {
this.onListenRevoked_(body[ /*path*/'p'], body[ /*query*/'q']);
}
else if (action === 'ac') {
this.onAuthRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);
}
else if (action === 'apc') {
this.onAppCheckRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);
}
else if (action === 'sd') {
this.onSecurityDebugPacket_(body);
}
else {
error('Unrecognized action received from server: ' +
stringify(action) +
'\nAre you using the latest client?');
}
}
onReady_(timestamp, sessionId) {
this.log_('connection ready');
this.connected_ = true;
this.lastConnectionEstablishedTime_ = new Date().getTime();
this.handleTimestamp_(timestamp);
this.lastSessionId = sessionId;
if (this.firstConnection_) {
this.sendConnectStats_();
}
this.restoreState_();
this.firstConnection_ = false;
this.onConnectStatus_(true);
}
scheduleConnect_(timeout) {
assert(!this.realtime_, "Scheduling a connect when we're already connected/ing?");
if (this.establishConnectionTimer_) {
clearTimeout(this.establishConnectionTimer_);
}
// NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating "Security Error" in
// Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).
this.establishConnectionTimer_ = setTimeout(() => {
this.establishConnectionTimer_ = null;
this.establishConnection_();
// eslint-disable-next-line @typescript-eslint/no-explicit-any
}, Math.floor(timeout));
}
initConnection_() {
if (!this.realtime_ && this.firstConnection_) {
this.scheduleConnect_(0);
}
}
onVisible_(visible) {
// NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.
if (visible &&
!this.visible_ &&
this.reconnectDelay_ === this.maxReconnectDelay_) {
this.log_('Window became visible. Reducing delay.');
this.reconnectDelay_ = RECONNECT_MIN_DELAY;
if (!this.realtime_) {
this.scheduleConnect_(0);
}
}
this.visible_ = visible;
}
onOnline_(online) {
if (online) {
this.log_('Browser went online.');
this.reconnectDelay_ = RECONNECT_MIN_DELAY;
if (!this.realtime_) {
this.scheduleConnect_(0);
}
}
else {
this.log_('Browser went offline. Killing connection.');
if (this.realtime_) {
this.realtime_.close();
}
}
}
onRealtimeDisconnect_() {
this.log_('data client disconnected');
this.connected_ = false;
this.realtime_ = null;
// Since we don't know if our sent transactions succeeded or not, we need to cancel them.
this.cancelSentTransactions_();
// Clear out the pending requests.
this.requestCBHash_ = {};
if (this.shouldReconnect_()) {
if (!this.visible_) {
this.log_("Window isn't visible. Delaying reconnect.");
this.reconnectDelay_ = this.maxReconnectDelay_;
this.lastConnectionAttemptTime_ = new Date().getTime();
}
else if (this.lastConnectionEstablishedTime_) {
// If we've been connected long enough, reset reconnect delay to minimum.
const timeSinceLastConnectSucceeded = new Date().getTime() - this.lastConnectionEstablishedTime_;
if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT) {
this.reconnectDelay_ = RECONNECT_MIN_DELAY;
}
this.lastConnectionEstablishedTime_ = null;
}
const timeSinceLastConnectAttempt = new Date().getTime() - this.lastConnectionAttemptTime_;
let reconnectDelay = Math.max(0, this.reconnectDelay_ - timeSinceLastConnectAttempt);
reconnectDelay = Math.random() * reconnectDelay;
this.log_('Trying to reconnect in ' + reconnectDelay + 'ms');
this.scheduleConnect_(reconnectDelay);
// Adjust reconnect delay for next time.
this.reconnectDelay_ = Math.min(this.maxReconnectDelay_, this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER);
}
this.onConnectStatus_(false);
}
async establishConnection_() {
if (this.shouldReconnect_()) {
this.log_('Making a connection attempt');
this.lastConnectionAttemptTime_ = new Date().getTime();
this.lastConnectionEstablishedTime_ = null;
const onDataMessage = this.onDataMessage_.bind(this);
const onReady = this.onReady_.bind(this);
const onDisconnect = this.onRealtimeDisconnect_.bind(this);
const connId = this.id + ':' + PersistentConnection.nextConnectionId_++;
const lastSessionId = this.lastSessionId;
let canceled = false;
let connection = null;
const closeFn = function () {
if (connection) {
connection.close();
}
else {
canceled = true;
onDisconnect();
}
};
const sendRequestFn = function (msg) {
assert(connection, "sendRequest call when we're not connected not allowed.");
connection.sendRequest(msg);
};
this.realtime_ = {
close: closeFn,
sendRequest: sendRequestFn
};
const forceRefresh = this.forceTokenRefresh_;
this.forceTokenRefresh_ = false;
try {
// First fetch auth and app check token, and establish connection after
// fetching the token was successful
const [authToken, appCheckToken] = await Promise.all([
this.authTokenProvider_.getToken(forceRefresh),
this.appCheckTokenProvider_.getToken(forceRefresh)
]);
if (!canceled) {
log('getToken() completed. Creating connection.');
this.authToken_ = authToken && authToken.accessToken;
this.appCheckToken_ = appCheckToken && appCheckToken.token;
connection = new Connection(connId, this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, onDataMessage, onReady, onDisconnect,
/* onKill= */ reason => {
warn(reason + ' (' + this.repoInfo_.toString() + ')');
this.interrupt(SERVER_KILL_INTERRUPT_REASON);
}, lastSessionId);
}
else {
log('getToken() completed but was canceled');
}
}
catch (error) {
this.log_('Failed to get token: ' + error);
if (!canceled) {
if (this.repoInfo_.nodeAdmin) {
// This may be a critical error for the Admin Node.js SDK, so log a warning.
// But getToken() may also just have temporarily failed, so we still want to
// continue retrying.
warn(error);
}
closeFn();
}
}
}
}
interrupt(reason) {
log('Interrupting connection for reason: ' + reason);
this.interruptReasons_[reason] = true;
if (this.realtime_) {
this.realtime_.close();
}
else {
if (this.establishConnectionTimer_) {
clearTimeout(this.establishConnectionTimer_);
this.establishConnectionTimer_ = null;
}
if (this.connected_) {
this.onRealtimeDisconnect_();
}
}
}
resume(reason) {
log('Resuming connection for reason: ' + reason);
delete this.interruptReasons_[reason];
if (isEmpty(this.interruptReasons_)) {
this.reconnectDelay_ = RECONNECT_MIN_DELAY;
if (!this.realtime_) {
this.scheduleConnect_(0);
}
}
}
handleTimestamp_(timestamp) {
const delta = timestamp - new Date().getTime();
this.onServerInfoUpdate_({ serverTimeOffset: delta });
}
cancelSentTransactions_() {
for (let i = 0; i < this.outstandingPuts_.length; i++) {
const put = this.outstandingPuts_[i];
if (put && /*hash*/ 'h' in put.request && put.queued) {
if (put.onComplete) {
put.onComplete('disconnect');
}
delete this.outstandingPuts_[i];
this.outstandingPutCount_--;
}
}
// Clean up array occasionally.
if (this.outstandingPutCount_ === 0) {
this.outstandingPuts_ = [];
}
}
onListenRevoked_(pathString, query) {
// Remove the listen and manufacture a "permission_denied" error for the failed listen.
let queryId;
if (!query) {
queryId = 'default';
}
else {
queryId = query.map(q => ObjectToUniqueKey(q)).join('$');
}
const listen = this.removeListen_(pathString, queryId);
if (listen && listen.onComplete) {
listen.onComplete('permission_denied');
}
}
removeListen_(pathString, queryId) {
const normalizedPathString = new Path(pathString).toString(); // normalize path.
let listen;
if (this.listens.has(normalizedPathString)) {
const map = this.listens.get(normalizedPathString);
listen = map.get(queryId);
map.delete(queryId);
if (map.size === 0) {
this.listens.delete(normalizedPathString);
}
}
else {
// all listens for this path has already been removed
listen = undefined;
}
return listen;
}
onAuthRevoked_(statusCode, explanation) {
log('Auth token revoked: ' + statusCode + '/' + explanation);
this.authToken_ = null;
this.forceTokenRefresh_ = true;
this.realtime_.close();
if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {
// We'll wait a couple times before logging the warning / increasing the
// retry period since oauth tokens will report as "invalid" if they're
// just expired. Plus there may be transient issues that resolve themselves.
this.invalidAuthTokenCount_++;
if (this.invalidAuthTokenCount_ >= INVALID_TOKEN_THRESHOLD) {
// Set a long reconnect delay because recovery is unlikely
this.reconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
// Notify the auth token provider that the token is invalid, which will log
// a warning
this.authTokenProvider_.notifyForInvalidToken();
}
}
}
onAppCheckRevoked_(statusCode, explanation) {
log('App check token revoked: ' + statusCode + '/' + explanation);
this.appCheckToken_ = null;
this.forceTokenRefresh_ = true;
// Note: We don't close the connection as the developer may not have
// enforcement enabled. The backend closes connections with enforcements.
if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {
// We'll wait a couple times before logging the warning / increasing the
// retry period since oauth tokens will report as "invalid" if they're
// just expired. Plus there may be transient issues that resolve themselves.
this.invalidAppCheckTokenCount_++;
if (this.invalidAppCheckTokenCount_ >= INVALID_TOKEN_THRESHOLD) {
this.appCheckTokenProvider_.notifyForInvalidToken();
}
}
}
onSecurityDebugPacket_(body) {
if (this.securityDebugCallback_) {
this.securityDebugCallback_(body);
}
else {
if ('msg' in body) {
console.log('FIREBASE: ' + body['msg'].replace('\n', '\nFIREBASE: '));
}
}
}
restoreState_() {
//Re-authenticate ourselves if we have a credential stored.
this.tryAuth();
this.tryAppCheck();
// Puts depend on having received the corresponding data update from the server before they complete, so we must
// make sure to send listens before puts.
for (const queries of this.listens.values()) {
for (const listenSpec of queries.values()) {
this.sendListen_(listenSpec);
}
}
for (let i = 0; i < this.outstandingPuts_.length; i++) {
if (this.outstandingPuts_[i]) {
this.sendPut_(i);
}
}
while (this.onDisconnectRequestQueue_.length) {
const request = this.onDisconnectRequestQueue_.shift();
this.sendOnDisconnect_(request.action, request.pathString, request.data, request.onComplete);
}
for (let i = 0; i < this.outstandingGets_.length; i++) {
if (this.outstandingGets_[i]) {
this.sendGet_(i);
}
}
}
/**
* Sends client stats for first connection
*/
sendConnectStats_() {
const stats = {};
let clientName = 'js';
if (isNodeSdk()) {
if (this.repoInfo_.nodeAdmin) {
clientName = 'admin_node';
}
else {
clientName = 'node';
}
}
stats['sdk.' + clientName + '.' + SDK_VERSION.replace(/\./g, '-')] = 1;
if (isMobileCordova()) {
stats['framework.cordova'] = 1;
}
else if (isReactNative()) {
stats['framework.reactnative'] = 1;
}
this.reportStats(stats);
}
shouldReconnect_() {
const online = OnlineMonitor.getInstance().currentlyOnline();
return isEmpty(this.interruptReasons_) && online;
}
}
PersistentConnection.nextPersistentConnectionId_ = 0;
/**
* Counter for number of connections created. Mainly used for tagging in the logs
*/
PersistentConnection.nextConnectionId_ = 0;
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Returns the delta from the previous call to get stats.
*
* @param collection_ - The collection to "listen" to.
*/
class StatsListener {
constructor(collection_) {
this.collection_ = collection_;
this.last_ = null;
}
get() {
const newStats = this.collection_.get();
const delta = Object.assign({}, newStats);
if (this.last_) {
each(this.last_, (stat, value) => {
delta[stat] = delta[stat] - value;
});
}
this.last_ = newStats;
return delta;
}
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
function statsReporterIncludeStat(reporter, stat) {
reporter.statsToReport_[stat] = true;
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// TODO: This should be @private but it's used by test_access.js and internal.js
function repoInterceptServerData(repo, callback) {
repo.interceptServerDataCallback_ = callback;
}
function repoStats(repo, showDelta = false) {
if (typeof console === 'undefined') {
return;
}
let stats;
if (showDelta) {
if (!repo.statsListener_) {
repo.statsListener_ = new StatsListener(repo.stats_);
}
stats = repo.statsListener_.get();
}
else {
stats = repo.stats_.get();
}
const longestName = Object.keys(stats).reduce((previousValue, currentValue) => Math.max(currentValue.length, previousValue), 0);
each(stats, (stat, value) => {
let paddedStat = stat;
// pad stat names to be the same length (plus 2 extra spaces).
for (let i = stat.length; i < longestName + 2; i++) {
paddedStat += ' ';
}
console.log(paddedStat + value);
});
}
function repoStatsIncrementCounter(repo, metric) {
repo.stats_.incrementCounter(metric);
statsReporterIncludeStat(repo.statsReporter_, metric);
}
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* INTERNAL methods for internal-use only (tests, etc.).
*
* Customers shouldn't use these or else should be aware that they could break at any time.
*/
const forceLongPolling = function () {
WebSocketConnection.forceDisallow();
BrowserPollConnection.forceAllow();
};
const forceWebSockets = function () {
BrowserPollConnection.forceDisallow();
};
/* Used by App Manager */
const isWebSocketsAvailable = function () {
return WebSocketConnection['isAvailable']();
};
const setSecurityDebugCallback = function (ref, callback) {
const connection = ref._delegate._repo.persistentConnection_;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
connection.securityDebugCallback_ = callback;
};
const stats = function (ref, showDelta) {
repoStats(ref._delegate._repo, showDelta);
};
const statsIncrementCounter = function (ref, metric) {
repoStatsIncrementCounter(ref._delegate._repo, metric);
};
const dataUpdateCount = function (ref) {
return ref._delegate._repo.dataUpdateCount;
};
const interceptServerData = function (ref, callback) {
return repoInterceptServerData(ref._delegate._repo, callback);
};
/**
* Used by console to create a database based on the app,
* passed database URL and a custom auth implementation.
*
* @param app - A valid FirebaseApp-like object
* @param url - A valid Firebase databaseURL
* @param version - custom version e.g. firebase-admin version
* @param customAuthImpl - custom auth implementation
*/
function initStandalone({ app, url, version, customAuthImpl, namespace, nodeAdmin = false }) {
setSDKVersion(version);
/**
* ComponentContainer('database-standalone') is just a placeholder that doesn't perform
* any actual function.
*/
const authProvider = new Provider('auth-internal', new ComponentContainer('database-standalone'));
authProvider.setComponent(new Component('auth-internal', () => customAuthImpl, "PRIVATE" /* PRIVATE */));
return {
instance: new Database(_repoManagerDatabaseFromApp(app, authProvider,
/* appCheckProvider= */ undefined, url, nodeAdmin), app),
namespace
};
}
var INTERNAL = /*#__PURE__*/Object.freeze({
__proto__: null,
forceLongPolling: forceLongPolling,
forceWebSockets: forceWebSockets,
isWebSocketsAvailable: isWebSocketsAvailable,
setSecurityDebugCallback: setSecurityDebugCallback,
stats: stats,
statsIncrementCounter: statsIncrementCounter,
dataUpdateCount: dataUpdateCount,
interceptServerData: interceptServerData,
initStandalone: initStandalone
});
/**
* @license
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const DataConnection = PersistentConnection;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
PersistentConnection.prototype.simpleListen = function (pathString, onComplete) {
this.sendRequest('q', { p: pathString }, onComplete);
};
// eslint-disable-next-line @typescript-eslint/no-explicit-any
PersistentConnection.prototype.echo = function (data, onEcho) {
this.sendRequest('echo', { d: data }, onEcho);
};
// RealTimeConnection properties that we use in tests.
const RealTimeConnection = Connection;
const hijackHash = function (newHash) {
const oldPut = PersistentConnection.prototype.put;
PersistentConnection.prototype.put = function (pathString, data, onComplete, hash) {
if (hash !== undefined) {
hash = newHash();
}
oldPut.call(this, pathString, data, onComplete, hash);
};
return function () {
PersistentConnection.prototype.put = oldPut;
};
};
const ConnectionTarget = RepoInfo;
const queryIdentifier = function (query) {
return query._delegate._queryIdentifier;
};
/**
* Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.
*/
const forceRestClient = function (forceRestClient) {
};
var TEST_ACCESS = /*#__PURE__*/Object.freeze({
__proto__: null,
DataConnection: DataConnection,
RealTimeConnection: RealTimeConnection,
hijackHash: hijackHash,
ConnectionTarget: ConnectionTarget,
queryIdentifier: queryIdentifier,
forceRestClient: forceRestClient
});
const name = "@firebase/database-compat";
const version = "0.0.900";
/**
* @license
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const ServerValue = Database.ServerValue;
function registerDatabase(instance) {
// set SDK_VERSION
setSDKVersion(instance.SDK_VERSION);
// Register the Database Service with the 'firebase' namespace.
instance.INTERNAL.registerComponent(new Component('database-compat', (container, { instanceIdentifier: url }) => {
/* Dependencies */
// getImmediate for FirebaseApp will always succeed
const app = container.getProvider('app-compat').getImmediate();
const databaseExp = container
.getProvider('database-exp')
.getImmediate({ identifier: url });
return new Database(databaseExp, app);
}, "PUBLIC" /* PUBLIC */)
.setServiceProps(
// firebase.database namespace properties
{
Reference,
Query,
Database,
DataSnapshot,
enableLogging: enableLogging$1,
INTERNAL,
ServerValue,
TEST_ACCESS
})
.setMultipleInstances(true));
instance.registerVersion(name, version);
}
registerDatabase(firebase);
export { registerDatabase };
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