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// Checks that global histogram counters for collections are updated as we expect.
// @tags: [
// requires_replication,
// ]
(function() {
"use strict";
var name = "operationalLatencyHistogramTest";
var mongo = MongoRunner.runMongod();
var testDB = mongo.getDB("test");
var testColl = testDB[name + "coll"];
testColl.drop();
function getHistogramStats() {
return testDB.serverStatus({opLatencies: {histograms: 1}}).opLatencies;
}
var lastHistogram = getHistogramStats();
// Checks that the difference in the histogram is what we expect, and also
// accounts for the serverStatus command itself.
function checkHistogramDiff(reads, writes, commands) {
var thisHistogram = getHistogramStats();
assert.eq(thisHistogram.reads.ops - lastHistogram.reads.ops, reads);
assert.eq(thisHistogram.writes.ops - lastHistogram.writes.ops, writes);
// Running the server status itself will increment command stats by one.
assert.eq(thisHistogram.commands.ops - lastHistogram.commands.ops, commands + 1);
return thisHistogram;
}
// Insert
var numRecords = 100;
for (var i = 0; i < numRecords; i++) {
assert.commandWorked(testColl.insert({_id: i}));
}
lastHistogram = checkHistogramDiff(0, numRecords, 0);
// Update
for (var i = 0; i < numRecords; i++) {
assert.commandWorked(testColl.update({_id: i}, {x: i}));
}
lastHistogram = checkHistogramDiff(0, numRecords, 0);
// Find
var cursors = [];
for (var i = 0; i < numRecords; i++) {
cursors[i] = testColl.find({x: {$gte: i}}).batchSize(2);
assert.eq(cursors[i].next()._id, i);
}
lastHistogram = checkHistogramDiff(numRecords, 0, 0);
// GetMore
for (var i = 0; i < numRecords / 2; i++) {
// Trigger two getmore commands.
assert.eq(cursors[i].next()._id, i + 1);
assert.eq(cursors[i].next()._id, i + 2);
assert.eq(cursors[i].next()._id, i + 3);
assert.eq(cursors[i].next()._id, i + 4);
}
lastHistogram = checkHistogramDiff(numRecords, 0, 0);
// KillCursors
// The last cursor has no additional results, hence does not need to be closed.
for (var i = 0; i < numRecords - 1; i++) {
cursors[i].close();
}
lastHistogram = checkHistogramDiff(0, 0, numRecords - 1);
// Remove
for (var i = 0; i < numRecords; i++) {
assert.commandWorked(testColl.remove({_id: i}));
}
lastHistogram = checkHistogramDiff(0, numRecords, 0);
// Upsert
for (var i = 0; i < numRecords; i++) {
assert.commandWorked(testColl.update({_id: i}, {x: i}, {upsert: 1}));
}
lastHistogram = checkHistogramDiff(0, numRecords, 0);
// Aggregate
for (var i = 0; i < numRecords; i++) {
testColl.aggregate([{$match: {x: i}}, {$group: {_id: "$x"}}]);
}
lastHistogram = checkHistogramDiff(numRecords, 0, 0);
// Count
for (var i = 0; i < numRecords; i++) {
testColl.count({x: i});
}
lastHistogram = checkHistogramDiff(numRecords, 0, 0);
// FindAndModify
testColl.findAndModify({query: {}, update: {pt: {type: "Point", coordinates: [0, 0]}}});
lastHistogram = checkHistogramDiff(0, 1, 0);
// CreateIndex
assert.commandWorked(testColl.createIndex({pt: "2dsphere"}));
lastHistogram = checkHistogramDiff(0, 0, 1);
// $geoNear aggregation stage
assert.commandWorked(testDB.runCommand({
aggregate: testColl.getName(),
pipeline: [{
$geoNear: {
near: {type: "Point", coordinates: [0, 0]},
spherical: true,
distanceField: "dist",
}
}],
cursor: {},
}));
lastHistogram = checkHistogramDiff(1, 0, 0);
// GetIndexes
testColl.getIndexes();
lastHistogram = checkHistogramDiff(0, 0, 1);
// Reindex
assert.commandWorked(testColl.reIndex());
lastHistogram = checkHistogramDiff(0, 0, 1);
// DropIndex
assert.commandWorked(testColl.dropIndex({pt: "2dsphere"}));
lastHistogram = checkHistogramDiff(0, 0, 1);
// Explain
testColl.explain().find().next();
lastHistogram = checkHistogramDiff(0, 0, 1);
// CollStats
assert.commandWorked(testDB.runCommand({collStats: testColl.getName()}));
lastHistogram = checkHistogramDiff(0, 0, 1);
// CollMod
assert.commandWorked(testDB.runCommand({collStats: testColl.getName(), validationLevel: "off"}));
lastHistogram = checkHistogramDiff(0, 0, 1);
// Compact
var commandResult = testDB.runCommand({compact: testColl.getName()});
// If storage engine supports compact, it should count as a command.
if (!commandResult.ok) {
assert.commandFailedWithCode(commandResult, ErrorCodes.CommandNotSupported);
}
lastHistogram = checkHistogramDiff(0, 0, 1);
// DataSize
testColl.dataSize();
lastHistogram = checkHistogramDiff(0, 0, 1);
// PlanCache
testColl.getPlanCache().list();
lastHistogram = checkHistogramDiff(1, 0, 0);
// ServerStatus
assert.commandWorked(testDB.serverStatus());
lastHistogram = checkHistogramDiff(0, 0, 1);
// WhatsMyURI
assert.commandWorked(testColl.runCommand("whatsmyuri"));
lastHistogram = checkHistogramDiff(0, 0, 1);
// Test non-command.
assert.commandFailed(testColl.runCommand("IHopeNobodyEverMakesThisACommand"));
lastHistogram = checkHistogramDiff(0, 0, 1);
MongoRunner.stopMongod(mongo);
}());
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