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120 lines
3.2 KiB
120 lines
3.2 KiB
'use strict';
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const Aspect = require('./operation').Aspect;
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const OperationBase = require('./operation').OperationBase;
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const applyWriteConcern = require('../utils').applyWriteConcern;
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const debugOptions = require('../utils').debugOptions;
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const handleCallback = require('../utils').handleCallback;
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const MongoError = require('../core').MongoError;
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const ReadPreference = require('../core').ReadPreference;
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const resolveReadPreference = require('../utils').resolveReadPreference;
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const MongoDBNamespace = require('../utils').MongoDBNamespace;
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const debugFields = [
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'authSource',
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'w',
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'wtimeout',
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'j',
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'native_parser',
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'forceServerObjectId',
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'serializeFunctions',
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'raw',
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'promoteLongs',
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'promoteValues',
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'promoteBuffers',
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'bufferMaxEntries',
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'numberOfRetries',
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'retryMiliSeconds',
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'readPreference',
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'pkFactory',
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'parentDb',
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'promiseLibrary',
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'noListener'
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];
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class CommandOperation extends OperationBase {
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constructor(db, options, collection, command) {
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super(options);
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if (!this.hasAspect(Aspect.WRITE_OPERATION)) {
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if (collection != null) {
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this.options.readPreference = resolveReadPreference(collection, options);
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} else {
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this.options.readPreference = resolveReadPreference(db, options);
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}
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} else {
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if (collection != null) {
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applyWriteConcern(this.options, { db, coll: collection }, this.options);
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} else {
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applyWriteConcern(this.options, { db }, this.options);
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}
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this.options.readPreference = ReadPreference.primary;
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}
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this.db = db;
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if (command != null) {
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this.command = command;
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}
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if (collection != null) {
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this.collection = collection;
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}
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}
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_buildCommand() {
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if (this.command != null) {
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return this.command;
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}
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}
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execute(callback) {
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const db = this.db;
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const options = Object.assign({}, this.options);
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// Did the user destroy the topology
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if (db.serverConfig && db.serverConfig.isDestroyed()) {
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return callback(new MongoError('topology was destroyed'));
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}
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let command;
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try {
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command = this._buildCommand();
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} catch (e) {
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return callback(e);
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}
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// Get the db name we are executing against
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const dbName = options.dbName || options.authdb || db.databaseName;
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// Convert the readPreference if its not a write
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if (this.hasAspect(Aspect.WRITE_OPERATION)) {
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if (options.writeConcern && (!options.session || !options.session.inTransaction())) {
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command.writeConcern = options.writeConcern;
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}
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}
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// Debug information
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if (db.s.logger.isDebug()) {
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db.s.logger.debug(
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`executing command ${JSON.stringify(
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command
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)} against ${dbName}.$cmd with options [${JSON.stringify(
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debugOptions(debugFields, options)
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)}]`
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);
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}
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const namespace =
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this.namespace != null ? this.namespace : new MongoDBNamespace(dbName, '$cmd');
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// Execute command
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db.s.topology.command(namespace, command, options, (err, result) => {
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if (err) return handleCallback(callback, err);
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if (options.full) return handleCallback(callback, null, result);
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handleCallback(callback, null, result.result);
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});
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}
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}
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module.exports = CommandOperation;
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