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71 lines
1.9 KiB
71 lines
1.9 KiB
4 years ago
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'use strict';
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const KillCursor = require('../connection/commands').KillCursor;
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const MongoError = require('../error').MongoError;
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const MongoNetworkError = require('../error').MongoNetworkError;
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const collectionNamespace = require('./shared').collectionNamespace;
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const maxWireVersion = require('../utils').maxWireVersion;
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const command = require('./command');
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function killCursors(server, ns, cursorState, callback) {
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callback = typeof callback === 'function' ? callback : () => {};
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const cursorId = cursorState.cursorId;
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if (maxWireVersion(server) < 4) {
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const bson = server.s.bson;
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const pool = server.s.pool;
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const killCursor = new KillCursor(bson, ns, [cursorId]);
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const options = {
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immediateRelease: true,
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noResponse: true
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};
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if (typeof cursorState.session === 'object') {
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options.session = cursorState.session;
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}
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if (pool && pool.isConnected()) {
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try {
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pool.write(killCursor, options, callback);
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} catch (err) {
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if (typeof callback === 'function') {
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callback(err, null);
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} else {
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console.warn(err);
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}
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}
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}
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return;
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}
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const killCursorCmd = {
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killCursors: collectionNamespace(ns),
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cursors: [cursorId]
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};
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const options = {};
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if (typeof cursorState.session === 'object') options.session = cursorState.session;
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command(server, ns, killCursorCmd, options, (err, result) => {
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if (err) {
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return callback(err);
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}
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const response = result.message;
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if (response.cursorNotFound) {
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return callback(new MongoNetworkError('cursor killed or timed out'), null);
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}
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if (!Array.isArray(response.documents) || response.documents.length === 0) {
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return callback(
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new MongoError(`invalid killCursors result returned for cursor id ${cursorId}`)
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);
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}
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callback(null, response.documents[0]);
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});
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}
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module.exports = killCursors;
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