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/**
* apply_ops_wc.js
*
* This file tests SERVER-22270 that applyOps commands should take a writeConcern.
* This first tests that invalid write concerns cause writeConcern errors.
* Next, it tests replication with writeConcerns of w:2 and w:majority.
* When there are 3 nodes up in a replica set, applyOps commands succeed.
* It then stops replication at one seconday and confirms that applyOps commands still succeed.
* It finally stops replication at another secondary and confirms that applyOps commands fail.
*/
(function() {
"use strict";
var nodeCount = 3;
var replTest = new ReplSetTest({ name: 'applyOpsWCSet', nodes: nodeCount});
replTest.startSet();
var cfg = replTest.getReplSetConfig();
cfg.settings = {};
cfg.settings.chainingAllowed = false;
replTest.initiate(cfg);
var testDB = "applyOps-wc-test";
// Get test collection.
var master = replTest.getPrimary();
var db = master.getDB(testDB);
var coll = db.apply_ops_wc;
function dropTestCollection() {
coll.drop();
assert.eq(0, coll.find().count(), "test collection not empty");
}
dropTestCollection();
// Set up the applyOps command.
var applyOpsReq = { applyOps: [
{
op: "i",
ns: coll.getFullName(),
o: {
_id: 2,
x: "b"
}
},
{
op: "i",
ns: coll.getFullName(),
o: {
_id: 3,
x: "c"
}
},
{
op: "i",
ns: coll.getFullName(),
o: {
_id: 4,
x: "d"
}
},
]};
function assertApplyOpsCommandWorked(res) {
assert.eq(3, res.applied);
assert.commandWorked(res);
assert.eq([true, true, true], res.results);
}
function assertWriteConcernError(res) {
assert(res.writeConcernError);
assert(res.writeConcernError.code);
assert(res.writeConcernError.errmsg);
}
var invalidWriteConcerns = [
{ w: 'invalid' },
{ w: nodeCount + 1 }
];
function testInvalidWriteConcern(wc) {
jsTest.log("Testing invalid write concern " + tojson(wc));
applyOpsReq.writeConcern = wc;
var res = coll.runCommand(applyOpsReq);
assertApplyOpsCommandWorked(res);
assertWriteConcernError(res);
}
// Verify that invalid write concerns yield an error.
coll.insert({ _id: 1, x: "a" });
invalidWriteConcerns.forEach(testInvalidWriteConcern);
var secondaries = replTest.getSecondaries();
var majorityWriteConcerns = [
{ w: 2, wtimeout: 30000 },
{ w: 'majority', wtimeout: 30000 },
];
function testMajorityWriteConcerns(wc) {
jsTest.log("Testing " + tojson(wc));
// Reset secondaries to ensure they can replicate.
secondaries[0].getDB('admin').runCommand({ configureFailPoint: 'rsSyncApplyStop',
mode: 'off' });
secondaries[1].getDB('admin').runCommand({ configureFailPoint: 'rsSyncApplyStop',
mode: 'off' });
// Set the writeConcern of the applyOps command.
applyOpsReq.writeConcern = wc;
dropTestCollection();
// applyOps with a full replica set should succeed.
coll.insert({ _id: 1, x: "a" });
var res = db.runCommand(applyOpsReq);
assertApplyOpsCommandWorked(res);
assert(!res.writeConcernError, 'applyOps on a full replicaset had writeConcern error ' +
tojson(res.writeConcernError));
dropTestCollection();
// Stop replication at one secondary.
secondaries[0].getDB('admin').runCommand({ configureFailPoint: 'rsSyncApplyStop',
mode: 'alwaysOn' });
// applyOps should succeed with only 1 node not replicating.
coll.insert({ _id: 1, x: "a" });
res = db.runCommand(applyOpsReq);
assertApplyOpsCommandWorked(res);
assert(!res.writeConcernError,
'applyOps on a replicaset with 2 working nodes had writeConcern error ' +
tojson(res.writeConcernError));
dropTestCollection();
// Stop replication at a second secondary.
secondaries[1].getDB('admin').runCommand({ configureFailPoint: 'rsSyncApplyStop',
mode: 'alwaysOn' });
// applyOps should fail after two nodes have stopped replicating.
coll.insert({ _id: 1, x: "a" });
applyOpsReq.writeConcern.wtimeout = 5000;
res = db.runCommand(applyOpsReq);
assertApplyOpsCommandWorked(res);
assertWriteConcernError(res);
}
majorityWriteConcerns.forEach(testMajorityWriteConcerns);
})();
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