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86 lines
3.2 KiB
JavaScript
86 lines
3.2 KiB
JavaScript
1 year ago
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.WriteConcern = exports.WRITE_CONCERN_KEYS = void 0;
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exports.WRITE_CONCERN_KEYS = ['w', 'wtimeout', 'j', 'journal', 'fsync'];
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/**
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* A MongoDB WriteConcern, which describes the level of acknowledgement
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* requested from MongoDB for write operations.
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* @public
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*
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* @see https://www.mongodb.com/docs/manual/reference/write-concern/
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*/
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class WriteConcern {
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/**
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* Constructs a WriteConcern from the write concern properties.
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* @param w - request acknowledgment that the write operation has propagated to a specified number of mongod instances or to mongod instances with specified tags.
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* @param wtimeoutMS - specify a time limit to prevent write operations from blocking indefinitely
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* @param journal - request acknowledgment that the write operation has been written to the on-disk journal
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* @param fsync - equivalent to the j option. Is deprecated and will be removed in the next major version.
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*/
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constructor(w, wtimeoutMS, journal, fsync) {
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if (w != null) {
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if (!Number.isNaN(Number(w))) {
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this.w = Number(w);
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}
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else {
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this.w = w;
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}
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}
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if (wtimeoutMS != null) {
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this.wtimeoutMS = this.wtimeout = wtimeoutMS;
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}
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if (journal != null) {
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this.journal = this.j = journal;
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}
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if (fsync != null) {
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this.journal = this.j = fsync ? true : false;
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}
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}
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/**
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* Apply a write concern to a command document. Will modify and return the command.
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*/
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static apply(command, writeConcern) {
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const wc = {};
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// The write concern document sent to the server has w/wtimeout/j fields.
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if (writeConcern.w != null)
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wc.w = writeConcern.w;
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if (writeConcern.wtimeoutMS != null)
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wc.wtimeout = writeConcern.wtimeoutMS;
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if (writeConcern.journal != null)
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wc.j = writeConcern.j;
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command.writeConcern = wc;
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return command;
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}
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/** Construct a WriteConcern given an options object. */
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static fromOptions(options, inherit) {
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if (options == null)
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return undefined;
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inherit = inherit ?? {};
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let opts;
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if (typeof options === 'string' || typeof options === 'number') {
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opts = { w: options };
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}
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else if (options instanceof WriteConcern) {
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opts = options;
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}
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else {
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opts = options.writeConcern;
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}
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const parentOpts = inherit instanceof WriteConcern ? inherit : inherit.writeConcern;
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const { w = undefined, wtimeout = undefined, j = undefined, fsync = undefined, journal = undefined, wtimeoutMS = undefined } = {
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...parentOpts,
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...opts
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};
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if (w != null ||
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wtimeout != null ||
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wtimeoutMS != null ||
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j != null ||
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journal != null ||
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fsync != null) {
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return new WriteConcern(w, wtimeout ?? wtimeoutMS, j ?? journal, fsync);
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}
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return undefined;
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}
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}
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exports.WriteConcern = WriteConcern;
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//# sourceMappingURL=write_concern.js.map
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