Sindbad~EG File Manager
"use strict";
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.updateSessionFromResponse = exports.applySession = exports.ServerSessionPool = exports.ServerSession = exports.maybeClearPinnedConnection = exports.ClientSession = void 0;
const util_1 = require("util");
const bson_1 = require("./bson");
const metrics_1 = require("./cmap/metrics");
const shared_1 = require("./cmap/wire_protocol/shared");
const constants_1 = require("./constants");
const error_1 = require("./error");
const mongo_types_1 = require("./mongo_types");
const execute_operation_1 = require("./operations/execute_operation");
const run_command_1 = require("./operations/run_command");
const read_concern_1 = require("./read_concern");
const read_preference_1 = require("./read_preference");
const common_1 = require("./sdam/common");
const transactions_1 = require("./transactions");
const utils_1 = require("./utils");
const write_concern_1 = require("./write_concern");
const minWireVersionForShardedTransactions = 8;
/** @internal */
const kServerSession = Symbol('serverSession');
/** @internal */
const kSnapshotTime = Symbol('snapshotTime');
/** @internal */
const kSnapshotEnabled = Symbol('snapshotEnabled');
/** @internal */
const kPinnedConnection = Symbol('pinnedConnection');
/** @internal Accumulates total number of increments to add to txnNumber when applying session to command */
const kTxnNumberIncrement = Symbol('txnNumberIncrement');
/**
* A class representing a client session on the server
*
* NOTE: not meant to be instantiated directly.
* @public
*/
class ClientSession extends mongo_types_1.TypedEventEmitter {
/**
* Create a client session.
* @internal
* @param client - The current client
* @param sessionPool - The server session pool (Internal Class)
* @param options - Optional settings
* @param clientOptions - Optional settings provided when creating a MongoClient
*/
constructor(client, sessionPool, options, clientOptions) {
super();
/** @internal */
this[_a] = false;
if (client == null) {
// TODO(NODE-3483)
throw new error_1.MongoRuntimeError('ClientSession requires a MongoClient');
}
if (sessionPool == null || !(sessionPool instanceof ServerSessionPool)) {
// TODO(NODE-3483)
throw new error_1.MongoRuntimeError('ClientSession requires a ServerSessionPool');
}
options = options ?? {};
if (options.snapshot === true) {
this[kSnapshotEnabled] = true;
if (options.causalConsistency === true) {
throw new error_1.MongoInvalidArgumentError('Properties "causalConsistency" and "snapshot" are mutually exclusive');
}
}
this.client = client;
this.sessionPool = sessionPool;
this.hasEnded = false;
this.clientOptions = clientOptions;
this.explicit = !!options.explicit;
this[kServerSession] = this.explicit ? this.sessionPool.acquire() : null;
this[kTxnNumberIncrement] = 0;
const defaultCausalConsistencyValue = this.explicit && options.snapshot !== true;
this.supports = {
// if we can enable causal consistency, do so by default
causalConsistency: options.causalConsistency ?? defaultCausalConsistencyValue
};
this.clusterTime = options.initialClusterTime;
this.operationTime = undefined;
this.owner = options.owner;
this.defaultTransactionOptions = Object.assign({}, options.defaultTransactionOptions);
this.transaction = new transactions_1.Transaction();
}
/** The server id associated with this session */
get id() {
return this[kServerSession]?.id;
}
get serverSession() {
let serverSession = this[kServerSession];
if (serverSession == null) {
if (this.explicit) {
throw new error_1.MongoRuntimeError('Unexpected null serverSession for an explicit session');
}
if (this.hasEnded) {
throw new error_1.MongoRuntimeError('Unexpected null serverSession for an ended implicit session');
}
serverSession = this.sessionPool.acquire();
this[kServerSession] = serverSession;
}
return serverSession;
}
/** Whether or not this session is configured for snapshot reads */
get snapshotEnabled() {
return this[kSnapshotEnabled];
}
get loadBalanced() {
return this.client.topology?.description.type === common_1.TopologyType.LoadBalanced;
}
/** @internal */
get pinnedConnection() {
return this[kPinnedConnection];
}
/** @internal */
pin(conn) {
if (this[kPinnedConnection]) {
throw TypeError('Cannot pin multiple connections to the same session');
}
this[kPinnedConnection] = conn;
conn.emit(constants_1.PINNED, this.inTransaction() ? metrics_1.ConnectionPoolMetrics.TXN : metrics_1.ConnectionPoolMetrics.CURSOR);
}
/** @internal */
unpin(options) {
if (this.loadBalanced) {
return maybeClearPinnedConnection(this, options);
}
this.transaction.unpinServer();
}
get isPinned() {
return this.loadBalanced ? !!this[kPinnedConnection] : this.transaction.isPinned;
}
/**
* Ends this session on the server
*
* @param options - Optional settings. Currently reserved for future use
*/
async endSession(options) {
try {
if (this.inTransaction()) {
await this.abortTransaction();
}
if (!this.hasEnded) {
const serverSession = this[kServerSession];
if (serverSession != null) {
// release the server session back to the pool
this.sessionPool.release(serverSession);
// Make sure a new serverSession never makes it onto this ClientSession
Object.defineProperty(this, kServerSession, {
value: ServerSession.clone(serverSession),
writable: false
});
}
// mark the session as ended, and emit a signal
this.hasEnded = true;
this.emit('ended', this);
}
}
catch {
// spec indicates that we should ignore all errors for `endSessions`
}
finally {
maybeClearPinnedConnection(this, { force: true, ...options });
}
}
/**
* Advances the operationTime for a ClientSession.
*
* @param operationTime - the `BSON.Timestamp` of the operation type it is desired to advance to
*/
advanceOperationTime(operationTime) {
if (this.operationTime == null) {
this.operationTime = operationTime;
return;
}
if (operationTime.greaterThan(this.operationTime)) {
this.operationTime = operationTime;
}
}
/**
* Advances the clusterTime for a ClientSession to the provided clusterTime of another ClientSession
*
* @param clusterTime - the $clusterTime returned by the server from another session in the form of a document containing the `BSON.Timestamp` clusterTime and signature
*/
advanceClusterTime(clusterTime) {
if (!clusterTime || typeof clusterTime !== 'object') {
throw new error_1.MongoInvalidArgumentError('input cluster time must be an object');
}
if (!clusterTime.clusterTime || clusterTime.clusterTime._bsontype !== 'Timestamp') {
throw new error_1.MongoInvalidArgumentError('input cluster time "clusterTime" property must be a valid BSON Timestamp');
}
if (!clusterTime.signature ||
clusterTime.signature.hash?._bsontype !== 'Binary' ||
(typeof clusterTime.signature.keyId !== 'bigint' &&
typeof clusterTime.signature.keyId !== 'number' &&
clusterTime.signature.keyId?._bsontype !== 'Long') // apparently we decode the key to number?
) {
throw new error_1.MongoInvalidArgumentError('input cluster time must have a valid "signature" property with BSON Binary hash and BSON Long keyId');
}
(0, common_1._advanceClusterTime)(this, clusterTime);
}
/**
* Used to determine if this session equals another
*
* @param session - The session to compare to
*/
equals(session) {
if (!(session instanceof ClientSession)) {
return false;
}
if (this.id == null || session.id == null) {
return false;
}
return utils_1.ByteUtils.equals(this.id.id.buffer, session.id.id.buffer);
}
/**
* Increment the transaction number on the internal ServerSession
*
* @privateRemarks
* This helper increments a value stored on the client session that will be
* added to the serverSession's txnNumber upon applying it to a command.
* This is because the serverSession is lazily acquired after a connection is obtained
*/
incrementTransactionNumber() {
this[kTxnNumberIncrement] += 1;
}
/** @returns whether this session is currently in a transaction or not */
inTransaction() {
return this.transaction.isActive;
}
/**
* Starts a new transaction with the given options.
*
* @param options - Options for the transaction
*/
startTransaction(options) {
if (this[kSnapshotEnabled]) {
throw new error_1.MongoCompatibilityError('Transactions are not supported in snapshot sessions');
}
if (this.inTransaction()) {
throw new error_1.MongoTransactionError('Transaction already in progress');
}
if (this.isPinned && this.transaction.isCommitted) {
this.unpin();
}
const topologyMaxWireVersion = (0, utils_1.maxWireVersion)(this.client.topology);
if ((0, shared_1.isSharded)(this.client.topology) &&
topologyMaxWireVersion != null &&
topologyMaxWireVersion < minWireVersionForShardedTransactions) {
throw new error_1.MongoCompatibilityError('Transactions are not supported on sharded clusters in MongoDB < 4.2.');
}
// increment txnNumber
this.incrementTransactionNumber();
// create transaction state
this.transaction = new transactions_1.Transaction({
readConcern: options?.readConcern ??
this.defaultTransactionOptions.readConcern ??
this.clientOptions?.readConcern,
writeConcern: options?.writeConcern ??
this.defaultTransactionOptions.writeConcern ??
this.clientOptions?.writeConcern,
readPreference: options?.readPreference ??
this.defaultTransactionOptions.readPreference ??
this.clientOptions?.readPreference,
maxCommitTimeMS: options?.maxCommitTimeMS ?? this.defaultTransactionOptions.maxCommitTimeMS
});
this.transaction.transition(transactions_1.TxnState.STARTING_TRANSACTION);
}
/**
* Commits the currently active transaction in this session.
*/
async commitTransaction() {
return endTransactionAsync(this, 'commitTransaction');
}
/**
* Aborts the currently active transaction in this session.
*/
async abortTransaction() {
return endTransactionAsync(this, 'abortTransaction');
}
/**
* This is here to ensure that ClientSession is never serialized to BSON.
*/
toBSON() {
throw new error_1.MongoRuntimeError('ClientSession cannot be serialized to BSON.');
}
/**
* Runs a provided callback within a transaction, retrying either the commitTransaction operation
* or entire transaction as needed (and when the error permits) to better ensure that
* the transaction can complete successfully.
*
* **IMPORTANT:** This method requires the user to return a Promise, and `await` all operations.
* Any callbacks that do not return a Promise will result in undefined behavior.
*
* @remarks
* This function:
* - Will return the command response from the final commitTransaction if every operation is successful (can be used as a truthy object)
* - Will return `undefined` if the transaction is explicitly aborted with `await session.abortTransaction()`
* - Will throw if one of the operations throws or `throw` statement is used inside the `withTransaction` callback
*
* Checkout a descriptive example here:
* @see https://www.mongodb.com/developer/quickstart/node-transactions/
*
* @param fn - callback to run within a transaction
* @param options - optional settings for the transaction
* @returns A raw command response or undefined
*/
async withTransaction(fn, options) {
const startTime = (0, utils_1.now)();
return attemptTransaction(this, startTime, fn, options);
}
}
exports.ClientSession = ClientSession;
_a = kSnapshotEnabled;
const MAX_WITH_TRANSACTION_TIMEOUT = 120000;
const NON_DETERMINISTIC_WRITE_CONCERN_ERRORS = new Set([
'CannotSatisfyWriteConcern',
'UnknownReplWriteConcern',
'UnsatisfiableWriteConcern'
]);
function hasNotTimedOut(startTime, max) {
return (0, utils_1.calculateDurationInMs)(startTime) < max;
}
function isUnknownTransactionCommitResult(err) {
const isNonDeterministicWriteConcernError = err instanceof error_1.MongoServerError &&
err.codeName &&
NON_DETERMINISTIC_WRITE_CONCERN_ERRORS.has(err.codeName);
return (isMaxTimeMSExpiredError(err) ||
(!isNonDeterministicWriteConcernError &&
err.code !== error_1.MONGODB_ERROR_CODES.UnsatisfiableWriteConcern &&
err.code !== error_1.MONGODB_ERROR_CODES.UnknownReplWriteConcern));
}
function maybeClearPinnedConnection(session, options) {
// unpin a connection if it has been pinned
const conn = session[kPinnedConnection];
const error = options?.error;
if (session.inTransaction() &&
error &&
error instanceof error_1.MongoError &&
error.hasErrorLabel(error_1.MongoErrorLabel.TransientTransactionError)) {
return;
}
const topology = session.client.topology;
// NOTE: the spec talks about what to do on a network error only, but the tests seem to
// to validate that we don't unpin on _all_ errors?
if (conn && topology != null) {
const servers = Array.from(topology.s.servers.values());
const loadBalancer = servers[0];
if (options?.error == null || options?.force) {
loadBalancer.pool.checkIn(conn);
conn.emit(constants_1.UNPINNED, session.transaction.state !== transactions_1.TxnState.NO_TRANSACTION
? metrics_1.ConnectionPoolMetrics.TXN
: metrics_1.ConnectionPoolMetrics.CURSOR);
if (options?.forceClear) {
loadBalancer.pool.clear({ serviceId: conn.serviceId });
}
}
session[kPinnedConnection] = undefined;
}
}
exports.maybeClearPinnedConnection = maybeClearPinnedConnection;
function isMaxTimeMSExpiredError(err) {
if (err == null || !(err instanceof error_1.MongoServerError)) {
return false;
}
return (err.code === error_1.MONGODB_ERROR_CODES.MaxTimeMSExpired ||
(err.writeConcernError && err.writeConcernError.code === error_1.MONGODB_ERROR_CODES.MaxTimeMSExpired));
}
function attemptTransactionCommit(session, startTime, fn, options) {
return session.commitTransaction().catch((err) => {
if (err instanceof error_1.MongoError &&
hasNotTimedOut(startTime, MAX_WITH_TRANSACTION_TIMEOUT) &&
!isMaxTimeMSExpiredError(err)) {
if (err.hasErrorLabel(error_1.MongoErrorLabel.UnknownTransactionCommitResult)) {
return attemptTransactionCommit(session, startTime, fn, options);
}
if (err.hasErrorLabel(error_1.MongoErrorLabel.TransientTransactionError)) {
return attemptTransaction(session, startTime, fn, options);
}
}
throw err;
});
}
const USER_EXPLICIT_TXN_END_STATES = new Set([
transactions_1.TxnState.NO_TRANSACTION,
transactions_1.TxnState.TRANSACTION_COMMITTED,
transactions_1.TxnState.TRANSACTION_ABORTED
]);
function userExplicitlyEndedTransaction(session) {
return USER_EXPLICIT_TXN_END_STATES.has(session.transaction.state);
}
function attemptTransaction(session, startTime, fn, options) {
session.startTransaction(options);
let promise;
try {
promise = fn(session);
}
catch (err) {
promise = Promise.reject(err);
}
if (!(0, utils_1.isPromiseLike)(promise)) {
session.abortTransaction().catch(() => null);
throw new error_1.MongoInvalidArgumentError('Function provided to `withTransaction` must return a Promise');
}
return promise.then(() => {
if (userExplicitlyEndedTransaction(session)) {
return;
}
return attemptTransactionCommit(session, startTime, fn, options);
}, err => {
function maybeRetryOrThrow(err) {
if (err instanceof error_1.MongoError &&
err.hasErrorLabel(error_1.MongoErrorLabel.TransientTransactionError) &&
hasNotTimedOut(startTime, MAX_WITH_TRANSACTION_TIMEOUT)) {
return attemptTransaction(session, startTime, fn, options);
}
if (isMaxTimeMSExpiredError(err)) {
err.addErrorLabel(error_1.MongoErrorLabel.UnknownTransactionCommitResult);
}
throw err;
}
if (session.inTransaction()) {
return session.abortTransaction().then(() => maybeRetryOrThrow(err));
}
return maybeRetryOrThrow(err);
});
}
const endTransactionAsync = (0, util_1.promisify)(endTransaction);
function endTransaction(session, commandName, callback) {
// handle any initial problematic cases
const txnState = session.transaction.state;
if (txnState === transactions_1.TxnState.NO_TRANSACTION) {
callback(new error_1.MongoTransactionError('No transaction started'));
return;
}
if (commandName === 'commitTransaction') {
if (txnState === transactions_1.TxnState.STARTING_TRANSACTION ||
txnState === transactions_1.TxnState.TRANSACTION_COMMITTED_EMPTY) {
// the transaction was never started, we can safely exit here
session.transaction.transition(transactions_1.TxnState.TRANSACTION_COMMITTED_EMPTY);
callback();
return;
}
if (txnState === transactions_1.TxnState.TRANSACTION_ABORTED) {
callback(new error_1.MongoTransactionError('Cannot call commitTransaction after calling abortTransaction'));
return;
}
}
else {
if (txnState === transactions_1.TxnState.STARTING_TRANSACTION) {
// the transaction was never started, we can safely exit here
session.transaction.transition(transactions_1.TxnState.TRANSACTION_ABORTED);
callback();
return;
}
if (txnState === transactions_1.TxnState.TRANSACTION_ABORTED) {
callback(new error_1.MongoTransactionError('Cannot call abortTransaction twice'));
return;
}
if (txnState === transactions_1.TxnState.TRANSACTION_COMMITTED ||
txnState === transactions_1.TxnState.TRANSACTION_COMMITTED_EMPTY) {
callback(new error_1.MongoTransactionError('Cannot call abortTransaction after calling commitTransaction'));
return;
}
}
// construct and send the command
const command = { [commandName]: 1 };
// apply a writeConcern if specified
let writeConcern;
if (session.transaction.options.writeConcern) {
writeConcern = Object.assign({}, session.transaction.options.writeConcern);
}
else if (session.clientOptions && session.clientOptions.writeConcern) {
writeConcern = { w: session.clientOptions.writeConcern.w };
}
if (txnState === transactions_1.TxnState.TRANSACTION_COMMITTED) {
writeConcern = Object.assign({ wtimeoutMS: 10000 }, writeConcern, { w: 'majority' });
}
if (writeConcern) {
write_concern_1.WriteConcern.apply(command, writeConcern);
}
if (commandName === 'commitTransaction' && session.transaction.options.maxTimeMS) {
Object.assign(command, { maxTimeMS: session.transaction.options.maxTimeMS });
}
function commandHandler(error, result) {
if (commandName !== 'commitTransaction') {
session.transaction.transition(transactions_1.TxnState.TRANSACTION_ABORTED);
if (session.loadBalanced) {
maybeClearPinnedConnection(session, { force: false });
}
// The spec indicates that we should ignore all errors on `abortTransaction`
return callback();
}
session.transaction.transition(transactions_1.TxnState.TRANSACTION_COMMITTED);
if (error instanceof error_1.MongoError) {
if (error.hasErrorLabel(error_1.MongoErrorLabel.RetryableWriteError) ||
error instanceof error_1.MongoWriteConcernError ||
isMaxTimeMSExpiredError(error)) {
if (isUnknownTransactionCommitResult(error)) {
error.addErrorLabel(error_1.MongoErrorLabel.UnknownTransactionCommitResult);
// per txns spec, must unpin session in this case
session.unpin({ error });
}
}
else if (error.hasErrorLabel(error_1.MongoErrorLabel.TransientTransactionError)) {
session.unpin({ error });
}
}
callback(error, result);
}
if (session.transaction.recoveryToken) {
command.recoveryToken = session.transaction.recoveryToken;
}
// send the command
(0, execute_operation_1.executeOperation)(session.client, new run_command_1.RunAdminCommandOperation(undefined, command, {
session,
readPreference: read_preference_1.ReadPreference.primary,
bypassPinningCheck: true
}), (error, result) => {
if (command.abortTransaction) {
// always unpin on abort regardless of command outcome
session.unpin();
}
if (error instanceof error_1.MongoError && error.hasErrorLabel(error_1.MongoErrorLabel.RetryableWriteError)) {
// SPEC-1185: apply majority write concern when retrying commitTransaction
if (command.commitTransaction) {
// per txns spec, must unpin session in this case
session.unpin({ force: true });
command.writeConcern = Object.assign({ wtimeout: 10000 }, command.writeConcern, {
w: 'majority'
});
}
return (0, execute_operation_1.executeOperation)(session.client, new run_command_1.RunAdminCommandOperation(undefined, command, {
session,
readPreference: read_preference_1.ReadPreference.primary,
bypassPinningCheck: true
}), commandHandler);
}
commandHandler(error, result);
});
}
/**
* Reflects the existence of a session on the server. Can be reused by the session pool.
* WARNING: not meant to be instantiated directly. For internal use only.
* @public
*/
class ServerSession {
/** @internal */
constructor() {
this.id = { id: new bson_1.Binary((0, utils_1.uuidV4)(), bson_1.Binary.SUBTYPE_UUID) };
this.lastUse = (0, utils_1.now)();
this.txnNumber = 0;
this.isDirty = false;
}
/**
* Determines if the server session has timed out.
*
* @param sessionTimeoutMinutes - The server's "logicalSessionTimeoutMinutes"
*/
hasTimedOut(sessionTimeoutMinutes) {
// Take the difference of the lastUse timestamp and now, which will result in a value in
// milliseconds, and then convert milliseconds to minutes to compare to `sessionTimeoutMinutes`
const idleTimeMinutes = Math.round((((0, utils_1.calculateDurationInMs)(this.lastUse) % 86400000) % 3600000) / 60000);
return idleTimeMinutes > sessionTimeoutMinutes - 1;
}
/**
* @internal
* Cloning meant to keep a readable reference to the server session data
* after ClientSession has ended
*/
static clone(serverSession) {
const arrayBuffer = new ArrayBuffer(16);
const idBytes = Buffer.from(arrayBuffer);
idBytes.set(serverSession.id.id.buffer);
const id = new bson_1.Binary(idBytes, serverSession.id.id.sub_type);
// Manual prototype construction to avoid modifying the constructor of this class
return Object.setPrototypeOf({
id: { id },
lastUse: serverSession.lastUse,
txnNumber: serverSession.txnNumber,
isDirty: serverSession.isDirty
}, ServerSession.prototype);
}
}
exports.ServerSession = ServerSession;
/**
* Maintains a pool of Server Sessions.
* For internal use only
* @internal
*/
class ServerSessionPool {
constructor(client) {
if (client == null) {
throw new error_1.MongoRuntimeError('ServerSessionPool requires a MongoClient');
}
this.client = client;
this.sessions = new utils_1.List();
}
/**
* Acquire a Server Session from the pool.
* Iterates through each session in the pool, removing any stale sessions
* along the way. The first non-stale session found is removed from the
* pool and returned. If no non-stale session is found, a new ServerSession is created.
*/
acquire() {
const sessionTimeoutMinutes = this.client.topology?.logicalSessionTimeoutMinutes ?? 10;
let session = null;
// Try to obtain from session pool
while (this.sessions.length > 0) {
const potentialSession = this.sessions.shift();
if (potentialSession != null &&
(!!this.client.topology?.loadBalanced ||
!potentialSession.hasTimedOut(sessionTimeoutMinutes))) {
session = potentialSession;
break;
}
}
// If nothing valid came from the pool make a new one
if (session == null) {
session = new ServerSession();
}
return session;
}
/**
* Release a session to the session pool
* Adds the session back to the session pool if the session has not timed out yet.
* This method also removes any stale sessions from the pool.
*
* @param session - The session to release to the pool
*/
release(session) {
const sessionTimeoutMinutes = this.client.topology?.logicalSessionTimeoutMinutes ?? 10;
if (this.client.topology?.loadBalanced && !sessionTimeoutMinutes) {
this.sessions.unshift(session);
}
if (!sessionTimeoutMinutes) {
return;
}
this.sessions.prune(session => session.hasTimedOut(sessionTimeoutMinutes));
if (!session.hasTimedOut(sessionTimeoutMinutes)) {
if (session.isDirty) {
return;
}
// otherwise, readd this session to the session pool
this.sessions.unshift(session);
}
}
}
exports.ServerSessionPool = ServerSessionPool;
/**
* Optionally decorate a command with sessions specific keys
*
* @param session - the session tracking transaction state
* @param command - the command to decorate
* @param options - Optional settings passed to calling operation
*
* @internal
*/
function applySession(session, command, options) {
if (session.hasEnded) {
return new error_1.MongoExpiredSessionError();
}
// May acquire serverSession here
const serverSession = session.serverSession;
if (serverSession == null) {
return new error_1.MongoRuntimeError('Unable to acquire server session');
}
if (options.writeConcern?.w === 0) {
if (session && session.explicit) {
// Error if user provided an explicit session to an unacknowledged write (SPEC-1019)
return new error_1.MongoAPIError('Cannot have explicit session with unacknowledged writes');
}
return;
}
// mark the last use of this session, and apply the `lsid`
serverSession.lastUse = (0, utils_1.now)();
command.lsid = serverSession.id;
const inTxnOrTxnCommand = session.inTransaction() || (0, transactions_1.isTransactionCommand)(command);
const isRetryableWrite = !!options.willRetryWrite;
if (isRetryableWrite || inTxnOrTxnCommand) {
serverSession.txnNumber += session[kTxnNumberIncrement];
session[kTxnNumberIncrement] = 0;
// TODO(NODE-2674): Preserve int64 sent from MongoDB
command.txnNumber = bson_1.Long.fromNumber(serverSession.txnNumber);
}
if (!inTxnOrTxnCommand) {
if (session.transaction.state !== transactions_1.TxnState.NO_TRANSACTION) {
session.transaction.transition(transactions_1.TxnState.NO_TRANSACTION);
}
if (session.supports.causalConsistency &&
session.operationTime &&
(0, utils_1.commandSupportsReadConcern)(command, options)) {
command.readConcern = command.readConcern || {};
Object.assign(command.readConcern, { afterClusterTime: session.operationTime });
}
else if (session[kSnapshotEnabled]) {
command.readConcern = command.readConcern || { level: read_concern_1.ReadConcernLevel.snapshot };
if (session[kSnapshotTime] != null) {
Object.assign(command.readConcern, { atClusterTime: session[kSnapshotTime] });
}
}
return;
}
// now attempt to apply transaction-specific sessions data
// `autocommit` must always be false to differentiate from retryable writes
command.autocommit = false;
if (session.transaction.state === transactions_1.TxnState.STARTING_TRANSACTION) {
session.transaction.transition(transactions_1.TxnState.TRANSACTION_IN_PROGRESS);
command.startTransaction = true;
const readConcern = session.transaction.options.readConcern || session?.clientOptions?.readConcern;
if (readConcern) {
command.readConcern = readConcern;
}
if (session.supports.causalConsistency && session.operationTime) {
command.readConcern = command.readConcern || {};
Object.assign(command.readConcern, { afterClusterTime: session.operationTime });
}
}
return;
}
exports.applySession = applySession;
function updateSessionFromResponse(session, document) {
if (document.$clusterTime) {
(0, common_1._advanceClusterTime)(session, document.$clusterTime);
}
if (document.operationTime && session && session.supports.causalConsistency) {
session.advanceOperationTime(document.operationTime);
}
if (document.recoveryToken && session && session.inTransaction()) {
session.transaction._recoveryToken = document.recoveryToken;
}
if (session?.[kSnapshotEnabled] && session[kSnapshotTime] == null) {
// find and aggregate commands return atClusterTime on the cursor
// distinct includes it in the response body
const atClusterTime = document.cursor?.atClusterTime || document.atClusterTime;
if (atClusterTime) {
session[kSnapshotTime] = atClusterTime;
}
}
}
exports.updateSessionFromResponse = updateSessionFromResponse;
//# sourceMappingURL=sessions.js.map
Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists