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/**
* Tests that the transaction items in the 'twoPhaseCommitCoordinator' object in currentOp() are
* being tracked correctly.
* @tags: [uses_transactions, uses_prepare_transaction]
*/
(function() {
'use strict';
load('jstests/libs/fail_point_util.js');
load('jstests/sharding/libs/sharded_transactions_helpers.js'); // for waitForFailpoint
function commitTxn(st, lsid, txnNumber, expectedError = null) {
let cmd = "db.adminCommand({" +
"commitTransaction: 1," +
"lsid: " + tojson(lsid) + "," +
"txnNumber: NumberLong(" + txnNumber + ")," +
"stmtId: NumberInt(0)," +
"autocommit: false," +
"})";
if (expectedError) {
cmd = "assert.commandFailedWithCode(" + cmd + "," + String(expectedError) + ");";
} else {
cmd = "assert.commandWorked(" + cmd + ");";
}
return startParallelShell(cmd, st.s.port);
}
function curOpAfterFailpoint(failPoint, filter, timesEntered = 1) {
jsTest.log(`waiting for failpoint '${failPoint.failPointName}' to be entered ${
timesEntered} time(s).`);
if (timesEntered > 1) {
const expectedLog = "Hit " + failPoint.failPointName + " failpoint";
waitForFailpoint(expectedLog, timesEntered);
} else {
failPoint.wait();
}
jsTest.log(`Running curOp operation after '${failPoint.failPointName}' failpoint.`);
let result = adminDB.aggregate([{$currentOp: {}}, {$match: filter}]).toArray();
jsTest.log(`${result.length} matching curOp entries after '${failPoint.failPointName}':\n${
tojson(result)}`);
jsTest.log(`disable '${failPoint.failPointName}' failpoint.`);
failPoint.off();
return result;
}
function makeWorkerFilterWithAction(session, action, txnNumber) {
return {
active: true,
'twoPhaseCommitCoordinator.lsid.id': session.getSessionId().id,
'twoPhaseCommitCoordinator.txnNumber': NumberLong(txnNumber),
'twoPhaseCommitCoordinator.action': action,
'twoPhaseCommitCoordinator.startTime': {$exists: true}
};
}
function enableFailPoints(shard, failPointNames) {
let failPoints = {};
jsTest.log(`enabling the following failpoints: ${tojson(failPointNames)}`);
failPointNames.forEach(function(failPointName) {
failPoints[failPointName] = configureFailPoint(shard, failPointName);
});
return failPoints;
}
function startTransaction(session, collectionName, insertValue) {
const dbName = session.getDatabase('test');
jsTest.log(`Starting a new transaction on ${dbName}.${collectionName}`);
session.startTransaction();
// insert into both shards
assert.commandWorked(dbName[collectionName].insert({_id: -1 * insertValue}));
assert.commandWorked(dbName[collectionName].insert({_id: insertValue}));
}
// Setup test
const numShards = 2;
const st = new ShardingTest({shards: numShards, config: 1});
const dbName = "test";
const collectionName = 'currentop_two_phase';
const ns = dbName + "." + collectionName;
const adminDB = st.s.getDB('admin');
const coordinator = st.shard0;
const participant = st.shard1;
const failPointNames = [
'hangAfterStartingCoordinateCommit',
'hangBeforeWritingParticipantList',
'hangBeforeSendingPrepare',
'hangBeforeWritingDecision',
'hangBeforeSendingCommit',
'hangBeforeDeletingCoordinatorDoc',
'hangBeforeSendingAbort'
];
assert.commandWorked(st.s.adminCommand({enableSharding: dbName}));
assert.commandWorked(st.s.adminCommand({movePrimary: dbName, to: coordinator.shardName}));
assert.commandWorked(st.s.adminCommand({shardCollection: ns, key: {_id: 1}}));
assert.commandWorked(st.s.adminCommand({split: ns, middle: {_id: 0}}));
assert.commandWorked(st.s.adminCommand({moveChunk: ns, find: {_id: 0}, to: participant.shardName}));
assert.commandWorked(coordinator.adminCommand({_flushRoutingTableCacheUpdates: ns}));
assert.commandWorked(participant.adminCommand({_flushRoutingTableCacheUpdates: ns}));
st.refreshCatalogCacheForNs(st.s, ns);
let failPoints = enableFailPoints(coordinator, failPointNames);
jsTest.log("Testing that coordinator threads show up in currentOp for a commit decision");
{
let session = adminDB.getMongo().startSession();
startTransaction(session, collectionName, 1);
let txnNumber = session.getTxnNumber_forTesting();
let lsid = session.getSessionId();
let commitJoin = commitTxn(st, lsid, txnNumber);
const coordinateCommitFilter = {
active: true,
'command.coordinateCommitTransaction': 1,
'command.lsid.id': session.getSessionId().id,
'command.txnNumber': NumberLong(txnNumber),
'command.coordinator': true,
'command.autocommit': false
};
let createCoordinateCommitTxnOp = curOpAfterFailpoint(
failPoints["hangAfterStartingCoordinateCommit"], coordinateCommitFilter);
assert.eq(1, createCoordinateCommitTxnOp.length);
const writeParticipantFilter =
makeWorkerFilterWithAction(session, "writingParticipantList", txnNumber);
let writeParticipantOp =
curOpAfterFailpoint(failPoints['hangBeforeWritingParticipantList'], writeParticipantFilter);
assert.eq(1, writeParticipantOp.length);
const sendPrepareFilter = makeWorkerFilterWithAction(session, "sendingPrepare", txnNumber);
let sendPrepareOp =
curOpAfterFailpoint(failPoints['hangBeforeSendingPrepare'], sendPrepareFilter, numShards);
assert.eq(numShards, sendPrepareOp.length);
const writingDecisionFilter = makeWorkerFilterWithAction(session, "writingDecision", txnNumber);
let writeDecisionOp =
curOpAfterFailpoint(failPoints['hangBeforeWritingDecision'], writingDecisionFilter);
assert.eq(1, writeDecisionOp.length);
const sendCommitFilter = makeWorkerFilterWithAction(session, "sendingCommit", txnNumber);
let sendCommitOp =
curOpAfterFailpoint(failPoints['hangBeforeSendingCommit'], sendCommitFilter, numShards);
assert.eq(numShards, sendCommitOp.length);
const deletingCoordinatorFilter =
makeWorkerFilterWithAction(session, "deletingCoordinatorDoc", txnNumber);
let deletingCoordinatorDocOp = curOpAfterFailpoint(
failPoints['hangBeforeDeletingCoordinatorDoc'], deletingCoordinatorFilter);
assert.eq(1, deletingCoordinatorDocOp.length);
commitJoin();
}
jsTest.log("Testing that coordinator threads show up in currentOp for an abort decision.");
{
let session = adminDB.getMongo().startSession();
startTransaction(session, collectionName, 2);
let txnNumber = session.getTxnNumber_forTesting();
let lsid = session.getSessionId();
// Manually abort the transaction on one of the participants, so that the participant fails to
// prepare and failpoint is triggered on the coordinator.
assert.commandWorked(participant.adminCommand({
abortTransaction: 1,
lsid: lsid,
txnNumber: NumberLong(txnNumber),
stmtId: NumberInt(0),
autocommit: false,
}));
let commitJoin = commitTxn(st, lsid, txnNumber, ErrorCodes.NoSuchTransaction);
const sendAbortFilter = makeWorkerFilterWithAction(session, "sendingAbort", txnNumber);
let sendingAbortOp =
curOpAfterFailpoint(failPoints['hangBeforeSendingAbort'], sendAbortFilter, numShards);
assert.eq(numShards, sendingAbortOp.length);
commitJoin();
}
st.stop();
})();
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