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'use strict';
/**
* update_replace.js
*
* Does updates that replace an entire document.
* The collection has indexes on some but not all fields.
*/
var $config = (function() {
// explicitly pass db to avoid accidentally using the global `db`
function assertResult(db, res) {
assertAlways.eq(0, res.nUpserted, tojson(res));
assertWhenOwnColl.eq(1, res.nMatched, tojson(res));
if (db.getMongo().writeMode() === 'commands') {
assertWhenOwnColl.contains(res.nModified, [0, 1], tojson(res));
}
}
// returns an update doc
function getRandomUpdateDoc() {
var choices = [
{},
{ x: 1, y: 1, z: 1 },
{ a: 1, b: 1, c: 1 }
];
return choices[Random.randInt(choices.length)];
}
var states = {
update: function update(db, collName) {
// choose a doc to update
var docIndex = Random.randInt(this.numDocs);
// choose an update to apply
var updateDoc = getRandomUpdateDoc();
// apply the update
var res = db[collName].update({ _id: docIndex }, updateDoc);
assertResult(db, res);
}
};
var transitions = {
update: { update: 1 }
};
function setup(db, collName, cluster) {
assertAlways.commandWorked(db[collName].ensureIndex({ a: 1 }));
assertAlways.commandWorked(db[collName].ensureIndex({ b: 1 }));
// no index on c
assertAlways.commandWorked(db[collName].ensureIndex({ x: 1 }));
assertAlways.commandWorked(db[collName].ensureIndex({ y: 1 }));
// no index on z
for (var i = 0; i < this.numDocs; ++i) {
var res = db[collName].insert({ _id: i });
assertWhenOwnColl.writeOK(res);
assertWhenOwnColl.eq(1, res.nInserted);
}
assertWhenOwnColl.eq(this.numDocs, db[collName].find().itcount());
}
var threadCount = 10;
return {
threadCount: threadCount,
iterations: 10,
startState: 'update',
states: states,
transitions: transitions,
data: {
// numDocs should be much less than threadCount, to make more threads use the same docs
numDocs: Math.floor(threadCount / 3)
},
setup: setup
};
})();
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