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/**
* Tests that read operations executed through the mongo shell's API are specify afterClusterTime
* when causal consistency is enabled.
* @tags: [requires_replication]
*/
(function() {
"use strict";
// This test makes assertions on commands run without logical session ids.
TestData.disableImplicitSessions = true;
const rst = new ReplSetTest({nodes: 1});
rst.startSet();
rst.initiate();
const primary = rst.getPrimary();
function runTests({withSession}) {
let db;
if (withSession) {
primary.setCausalConsistency(false);
db = primary.startSession({causalConsistency: true}).getDatabase("test");
} else {
primary.setCausalConsistency(true);
db = primary.getDB("test");
}
const coll = db.shell_can_use_read_concern;
coll.drop();
function testCommandCanBeCausallyConsistent(func, {
expectedSession: expectedSession = withSession,
expectedAfterClusterTime: expectedAfterClusterTime = true
} = {}) {
const mongoRunCommandOriginal = Mongo.prototype.runCommand;
const sentinel = {};
let cmdObjSeen = sentinel;
Mongo.prototype.runCommand = function runCommandSpy(dbName, cmdObj, options) {
cmdObjSeen = cmdObj;
return mongoRunCommandOriginal.apply(this, arguments);
};
try {
assert.doesNotThrow(func);
} finally {
Mongo.prototype.runCommand = mongoRunCommandOriginal;
}
if (cmdObjSeen === sentinel) {
throw new Error("Mongo.prototype.runCommand() was never called: " + func.toString());
}
let cmdName = Object.keys(cmdObjSeen)[0];
// If the command is in a wrapped form, then we look for the actual command object
// inside
// the query/$query object.
if (cmdName === "query" || cmdName === "$query") {
cmdObjSeen = cmdObjSeen[cmdName];
cmdName = Object.keys(cmdObjSeen)[0];
}
if (expectedSession) {
assert(cmdObjSeen.hasOwnProperty("lsid"),
"Expected operation " + tojson(cmdObjSeen) +
" to have a logical session id: " + func.toString());
} else {
assert(!cmdObjSeen.hasOwnProperty("lsid"),
"Expected operation " + tojson(cmdObjSeen) +
" to not have a logical session id: " + func.toString());
}
if (expectedAfterClusterTime) {
assert(cmdObjSeen.hasOwnProperty("readConcern"),
"Expected operation " + tojson(cmdObjSeen) +
" to have a readConcern object since it can be causally consistent: " +
func.toString());
const readConcern = cmdObjSeen.readConcern;
assert(readConcern.hasOwnProperty("afterClusterTime"),
"Expected operation " + tojson(cmdObjSeen) +
" to specify afterClusterTime since it can be causally consistent: " +
func.toString());
} else {
assert(!cmdObjSeen.hasOwnProperty("readConcern"),
"Expected operation " + tojson(cmdObjSeen) + " to not have a readConcern" +
" object since it cannot be causally consistent: " + func.toString());
}
}
//
// Tests for the "find" and "getMore" commands.
//
{
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(coll.insert([{}, {}, {}, {}, {}]));
}, {expectedSession: withSession, expectedAfterClusterTime: false});
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(
db.runCommand({find: coll.getName(), batchSize: 5, singleBatch: true}));
});
const cursor = coll.find().batchSize(2);
testCommandCanBeCausallyConsistent(function() {
cursor.next();
cursor.next();
});
testCommandCanBeCausallyConsistent(function() {
cursor.next();
cursor.next();
cursor.next();
assert(!cursor.hasNext());
}, {
expectedSession: withSession,
expectedAfterClusterTime: false,
});
}
//
// Tests for the "count" command.
//
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(db.runCommand({count: coll.getName()}));
});
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(db.runCommand({query: {count: coll.getName()}}));
});
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(db.runCommand({$query: {count: coll.getName()}}));
});
testCommandCanBeCausallyConsistent(function() {
assert.eq(5, coll.count());
});
//
// Tests for the "distinct" command.
//
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(db.runCommand({distinct: coll.getName(), key: "_id"}));
});
testCommandCanBeCausallyConsistent(function() {
const values = coll.distinct("_id");
assert.eq(5, values.length, tojson(values));
});
//
// Tests for the "aggregate" command.
//
{
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(
db.runCommand({aggregate: coll.getName(), pipeline: [], cursor: {batchSize: 5}}));
});
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(db.runCommand(
{aggregate: coll.getName(), pipeline: [], cursor: {batchSize: 5}, explain: true}));
});
let cursor;
testCommandCanBeCausallyConsistent(function() {
cursor = coll.aggregate([], {cursor: {batchSize: 2}});
cursor.next();
cursor.next();
});
testCommandCanBeCausallyConsistent(function() {
cursor.next();
cursor.next();
cursor.next();
assert(!cursor.hasNext());
}, {
expectedSession: withSession,
expectedAfterClusterTime: false,
});
}
//
// Tests for the "geoSearch" command.
//
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(coll.createIndex({loc: "geoHaystack", other: 1}, {bucketSize: 1}));
}, {expectedSession: withSession, expectedAfterClusterTime: false});
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(
db.runCommand({geoSearch: coll.getName(), near: [0, 0], maxDistance: 1, search: {}}));
});
//
// Tests for the "explain" command.
//
testCommandCanBeCausallyConsistent(function() {
assert.commandWorked(db.runCommand({explain: {find: coll.getName()}}));
});
testCommandCanBeCausallyConsistent(function() {
coll.find().explain();
});
testCommandCanBeCausallyConsistent(function() {
coll.explain().find().finish();
});
db.getSession().endSession();
}
runTests({withSession: false});
runTests({withSession: true});
rst.stopSet();
})();
|
