You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
3.2 KiB
JavaScript
86 lines
3.2 KiB
JavaScript
12 months ago
|
"use strict";
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.WriteConcern = exports.WRITE_CONCERN_KEYS = void 0;
|
||
|
|
exports.WRITE_CONCERN_KEYS = ['w', 'wtimeout', 'j', 'journal', 'fsync'];
|
||
|
|
/**
|
||
|
|
* A MongoDB WriteConcern, which describes the level of acknowledgement
|
||
|
|
* requested from MongoDB for write operations.
|
||
|
|
* @public
|
||
|
|
*
|
||
|
|
* @see https://www.mongodb.com/docs/manual/reference/write-concern/
|
||
|
|
*/
|
||
|
|
class WriteConcern {
|
||
|
|
/**
|
||
|
|
* Constructs a WriteConcern from the write concern properties.
|
||
|
|
* @param w - request acknowledgment that the write operation has propagated to a specified number of mongod instances or to mongod instances with specified tags.
|
||
|
|
* @param wtimeoutMS - specify a time limit to prevent write operations from blocking indefinitely
|
||
|
|
* @param journal - request acknowledgment that the write operation has been written to the on-disk journal
|
||
|
|
* @param fsync - equivalent to the j option. Is deprecated and will be removed in the next major version.
|
||
|
|
*/
|
||
|
|
constructor(w, wtimeoutMS, journal, fsync) {
|
||
|
|
if (w != null) {
|
||
|
|
if (!Number.isNaN(Number(w))) {
|
||
|
|
this.w = Number(w);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this.w = w;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (wtimeoutMS != null) {
|
||
|
|
this.wtimeoutMS = this.wtimeout = wtimeoutMS;
|
||
|
|
}
|
||
|
|
if (journal != null) {
|
||
|
|
this.journal = this.j = journal;
|
||
|
|
}
|
||
|
|
if (fsync != null) {
|
||
|
|
this.journal = this.j = fsync ? true : false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Apply a write concern to a command document. Will modify and return the command.
|
||
|
|
*/
|
||
|
|
static apply(command, writeConcern) {
|
||
|
|
const wc = {};
|
||
|
|
// The write concern document sent to the server has w/wtimeout/j fields.
|
||
|
|
if (writeConcern.w != null)
|
||
|
|
wc.w = writeConcern.w;
|
||
|
|
if (writeConcern.wtimeoutMS != null)
|
||
|
|
wc.wtimeout = writeConcern.wtimeoutMS;
|
||
|
|
if (writeConcern.journal != null)
|
||
|
|
wc.j = writeConcern.j;
|
||
|
|
command.writeConcern = wc;
|
||
|
|
return command;
|
||
|
|
}
|
||
|
|
/** Construct a WriteConcern given an options object. */
|
||
|
|
static fromOptions(options, inherit) {
|
||
|
|
if (options == null)
|
||
|
|
return undefined;
|
||
|
|
inherit = inherit ?? {};
|
||
|
|
let opts;
|
||
|
|
if (typeof options === 'string' || typeof options === 'number') {
|
||
|
|
opts = { w: options };
|
||
|
|
}
|
||
|
|
else if (options instanceof WriteConcern) {
|
||
|
|
opts = options;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
opts = options.writeConcern;
|
||
|
|
}
|
||
|
|
const parentOpts = inherit instanceof WriteConcern ? inherit : inherit.writeConcern;
|
||
|
|
const { w = undefined, wtimeout = undefined, j = undefined, fsync = undefined, journal = undefined, wtimeoutMS = undefined } = {
|
||
|
|
...parentOpts,
|
||
|
|
...opts
|
||
|
|
};
|
||
|
|
if (w != null ||
|
||
|
|
wtimeout != null ||
|
||
|
|
wtimeoutMS != null ||
|
||
|
|
j != null ||
|
||
|
|
journal != null ||
|
||
|
|
fsync != null) {
|
||
|
|
return new WriteConcern(w, wtimeout ?? wtimeoutMS, j ?? journal, fsync);
|
||
|
|
}
|
||
|
|
return undefined;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exports.WriteConcern = WriteConcern;
|
||
|
|
//# sourceMappingURL=write_concern.js.map
|