93 lines
3.2 KiB
JavaScript
93 lines
3.2 KiB
JavaScript
'use strict';
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/**
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* update_replace.js
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*
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* Does updates that replace an entire document.
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* The collection has indexes on some but not all fields.
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*/
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// For isMongod and supportsDocumentLevelConcurrency.
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load('jstests/concurrency/fsm_workload_helpers/server_types.js');
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var $config = (function() {
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// explicitly pass db to avoid accidentally using the global `db`
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function assertResult(db, res) {
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assertAlways.eq(0, res.nUpserted, tojson(res));
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if (isMongod(db) && supportsDocumentLevelConcurrency(db)) {
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// Storage engines which support document-level concurrency will automatically retry
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// any operations when there are conflicts, so we should always see a matching
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// document.
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assertWhenOwnColl.eq(res.nMatched, 1, tojson(res));
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} else {
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// On storage engines that do not support document-level concurrency, it is possible
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// that the query will not find the document. This can happen if another thread
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// updated the target document during a yield, triggering an invalidation.
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assertWhenOwnColl.contains(res.nMatched, [0, 1], tojson(res));
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}
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if (db.getMongo().writeMode() === 'commands') {
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// It's possible that we replaced the document with its current contents, making the
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// update a no-op.
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assertWhenOwnColl.contains(res.nModified, [0, 1], tojson(res));
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assertAlways.lte(res.nModified, res.nMatched, tojson(res));
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}
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}
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// returns an update doc
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function getRandomUpdateDoc() {
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var choices = [{}, {x: 1, y: 1, z: 1}, {a: 1, b: 1, c: 1}];
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return choices[Random.randInt(choices.length)];
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}
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var states = {
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update: function update(db, collName) {
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// choose a doc to update
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var docIndex = Random.randInt(this.numDocs);
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// choose an update to apply
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var updateDoc = getRandomUpdateDoc();
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// apply the update
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var res = db[collName].update({_id: docIndex}, updateDoc);
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assertResult(db, res);
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}
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};
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var transitions = {update: {update: 1}};
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function setup(db, collName, cluster) {
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assertAlways.commandWorked(db[collName].ensureIndex({a: 1}));
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assertAlways.commandWorked(db[collName].ensureIndex({b: 1}));
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// no index on c
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assertAlways.commandWorked(db[collName].ensureIndex({x: 1}));
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assertAlways.commandWorked(db[collName].ensureIndex({y: 1}));
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// no index on z
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// numDocs should be much less than threadCount, to make more threads use the same docs.
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this.numDocs = Math.floor(this.threadCount / 3);
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assertAlways.gt(this.numDocs, 0, 'numDocs should be a positive number');
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for (var i = 0; i < this.numDocs; ++i) {
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var res = db[collName].insert({_id: i});
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assertWhenOwnColl.writeOK(res);
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assertWhenOwnColl.eq(1, res.nInserted);
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}
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assertWhenOwnColl.eq(this.numDocs, db[collName].find().itcount());
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}
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return {
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threadCount: 10,
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iterations: 10,
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startState: 'update',
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states: states,
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transitions: transitions,
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setup: setup
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};
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})();
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