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/**
* Tests that transactional writes are prohibited on capped collections, but transactional reads are
* still allowed.
*
* 'requires_capped' tagged tests are excluded from txn passthrough suites.
* @tags: [requires_capped, uses_transactions]
*/
(function() {
"use strict";
const dbName = "test";
const cappedCollName = "transaction_ops_against_capped_collection";
const testDB = db.getSiblingDB(dbName);
const cappedTestColl = testDB.getCollection(cappedCollName);
const testDocument = {
"a": 1
};
cappedTestColl.drop({writeConcern: {w: "majority"}});
jsTest.log("Creating a capped collection '" + dbName + "." + cappedCollName + "'.");
assert.commandWorked(testDB.createCollection(cappedCollName, {capped: true, size: 500}));
jsTest.log("Adding a document to the capped collection so that the update op can be tested " +
"in the subsequent transaction attempts");
assert.commandWorked(cappedTestColl.insert(testDocument));
jsTest.log("Setting up a transaction in which to execute transaction ops.");
const session = db.getMongo().startSession();
const sessionDB = session.getDatabase(dbName);
const sessionCappedColl = sessionDB.getCollection(cappedCollName);
jsTest.log("Starting individual transactions for writes against capped collections that should " +
" fail.");
/*
* Write ops (should fail):
*/
jsTest.log("About to try: insert");
session.startTransaction();
assert.commandFailedWithCode(sessionCappedColl.insert({"x": 55}),
ErrorCodes.OperationNotSupportedInTransaction);
assert.commandFailedWithCode(session.abortTransaction_forTesting(), ErrorCodes.NoSuchTransaction);
jsTest.log("About to try: update");
session.startTransaction();
assert.commandFailedWithCode(sessionCappedColl.update(testDocument, {"a": 1000}),
ErrorCodes.OperationNotSupportedInTransaction);
assert.commandFailedWithCode(session.abortTransaction_forTesting(), ErrorCodes.NoSuchTransaction);
jsTest.log("About to try: findAndModify (update version)");
session.startTransaction();
assert.commandFailedWithCode(
sessionDB.runCommand(
{findAndModify: cappedCollName, query: testDocument, update: {"$set": {"a": 1000}}}),
ErrorCodes.OperationNotSupportedInTransaction);
assert.commandFailedWithCode(session.abortTransaction_forTesting(), ErrorCodes.NoSuchTransaction);
jsTest.log("About to try: findAndModify (remove version)");
session.startTransaction();
assert.commandFailedWithCode(
sessionDB.runCommand({findAndModify: cappedCollName, query: testDocument, remove: true}),
ErrorCodes.OperationNotSupportedInTransaction);
assert.commandFailedWithCode(session.abortTransaction_forTesting(), ErrorCodes.NoSuchTransaction);
// Deletes do not work against capped collections so we will not test them in transactions.
jsTest.log("Starting individual transactions for reads against capped collections that should " +
" succeed.");
/*
* Read ops (should succeed):
*/
jsTest.log("About to try: find");
session.startTransaction();
let findRes = assert.commandWorked(sessionDB.runCommand({"find": cappedCollName}));
assert.eq(1, findRes.cursor.firstBatch[0].a);
assert.commandWorked(session.abortTransaction_forTesting());
jsTest.log("About to try: distinct");
session.startTransaction();
let distinctRes =
assert.commandWorked(sessionDB.runCommand({"distinct": cappedCollName, "key": "a"}));
assert.eq(1, distinctRes.values);
assert.commandWorked(session.abortTransaction_forTesting());
jsTest.log("About to try: aggregate");
session.startTransaction();
let aggRes = assert.commandWorked(sessionDB.runCommand({
aggregate: cappedCollName,
pipeline: [{$match: {"a": 1}}],
cursor: {},
}));
assert.eq(1, aggRes.cursor.firstBatch[0].a);
assert.commandWorked(session.abortTransaction_forTesting());
session.endSession();
})();
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