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/**
* Test that opcounters are correct for getMore operations on awaitData cursors.
* @tags: [requires_capped]
*/
(function() {
"use strict";
const coll = db.getmore_awaitdata_opcounters;
coll.drop();
assert.commandWorked(db.createCollection(coll.getName(), {capped: true, size: 1024}));
assert.commandWorked(coll.insert({_id: 1}));
assert.commandWorked(coll.insert({_id: 2}));
assert.commandWorked(coll.insert({_id: 3}));
function getGlobalLatencyStats() {
return db.serverStatus().opLatencies.reads;
}
function getCollectionLatencyStats() {
return coll.latencyStats().next().latencyStats.reads;
}
function getTop() {
const res = db.adminCommand({top: 1});
if (!res.ok) {
assert.commandFailedWithCode(res, [ErrorCodes.BSONObjectTooLarge, 13548]);
return undefined;
}
return res.totals[coll.getFullName()];
}
// Global latency histogram from serverStatus should record two read ops, one for find and one
// for getMore.
let oldGlobalLatency = getGlobalLatencyStats();
assert.eq(3, coll.find().tailable(true).itcount());
let newGlobalLatency = getGlobalLatencyStats();
assert.eq(2, newGlobalLatency.ops - oldGlobalLatency.ops);
// Per-collection latency histogram should record three read ops, one for find, one for getMore,
// and one for the aggregation command used to retrieve the stats themselves.
let oldCollLatency = getCollectionLatencyStats();
assert.eq(3, coll.find().tailable(true).itcount());
let newCollLatency = getCollectionLatencyStats();
assert.eq(3, newCollLatency.ops - oldCollLatency.ops);
// Top separates counters for getMore and find. We should see a delta of one getMore op and one
// find op.
let oldTop = getTop();
if (oldTop === undefined) {
return;
}
assert.eq(3, coll.find().tailable(true).itcount());
let newTop = getTop();
if (newTop === undefined) {
return;
}
assert.eq(1, newTop.getmore.count - oldTop.getmore.count);
assert.eq(1, newTop.queries.count - oldTop.queries.count);
}());
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