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107 lines
3.4 KiB
107 lines
3.4 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 resolveReadPreference = require('../utils').resolveReadPreference;
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const ReadConcern = require('../read_concern');
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const WriteConcern = require('../write_concern');
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const maxWireVersion = require('../core/utils').maxWireVersion;
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const commandSupportsReadConcern = require('../core/sessions').commandSupportsReadConcern;
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const MongoError = require('../error').MongoError;
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const SUPPORTS_WRITE_CONCERN_AND_COLLATION = 5;
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class CommandOperationV2 extends OperationBase {
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constructor(parent, options, operationOptions) {
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super(options);
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this.ns = parent.s.namespace.withCollection('$cmd');
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this.readPreference = resolveReadPreference(parent, this.options);
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this.readConcern = resolveReadConcern(parent, this.options);
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this.writeConcern = resolveWriteConcern(parent, this.options);
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this.explain = false;
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if (operationOptions && typeof operationOptions.fullResponse === 'boolean') {
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this.fullResponse = true;
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}
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// TODO: A lot of our code depends on having the read preference in the options. This should
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// go away, but also requires massive test rewrites.
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this.options.readPreference = this.readPreference;
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// TODO(NODE-2056): make logger another "inheritable" property
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if (parent.s.logger) {
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this.logger = parent.s.logger;
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} else if (parent.s.db && parent.s.db.logger) {
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this.logger = parent.s.db.logger;
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}
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}
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executeCommand(server, cmd, callback) {
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// TODO: consider making this a non-enumerable property
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this.server = server;
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const options = this.options;
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const serverWireVersion = maxWireVersion(server);
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const inTransaction = this.session && this.session.inTransaction();
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if (this.readConcern && commandSupportsReadConcern(cmd) && !inTransaction) {
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Object.assign(cmd, { readConcern: this.readConcern });
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}
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if (options.collation && serverWireVersion < SUPPORTS_WRITE_CONCERN_AND_COLLATION) {
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callback(
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new MongoError(
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`Server ${server.name}, which reports wire version ${serverWireVersion}, does not support collation`
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)
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);
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return;
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}
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if (serverWireVersion >= SUPPORTS_WRITE_CONCERN_AND_COLLATION) {
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if (this.writeConcern && this.hasAspect(Aspect.WRITE_OPERATION)) {
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Object.assign(cmd, { writeConcern: this.writeConcern });
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}
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if (options.collation && typeof options.collation === 'object') {
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Object.assign(cmd, { collation: options.collation });
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}
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}
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if (typeof options.maxTimeMS === 'number') {
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cmd.maxTimeMS = options.maxTimeMS;
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}
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if (typeof options.comment === 'string') {
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cmd.comment = options.comment;
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}
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if (this.logger && this.logger.isDebug()) {
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this.logger.debug(`executing command ${JSON.stringify(cmd)} against ${this.ns}`);
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}
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server.command(this.ns.toString(), cmd, this.options, (err, result) => {
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if (err) {
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callback(err, null);
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return;
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}
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if (this.fullResponse) {
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callback(null, result);
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return;
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}
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callback(null, result.result);
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});
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}
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}
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function resolveWriteConcern(parent, options) {
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return WriteConcern.fromOptions(options) || parent.writeConcern;
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}
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function resolveReadConcern(parent, options) {
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return ReadConcern.fromOptions(options) || parent.readConcern;
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}
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module.exports = CommandOperationV2;
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