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/**
* Tests that the migration recipient will retrieve committed transactions on the donor with a
* 'lastWriteOpTime' before the stored 'startFetchingOpTime'. The recipient should store these
* committed transaction entries in its own 'config.transactions' collection.
*
* @tags: [requires_fcv_49, requires_majority_read_concern, incompatible_with_eft,
* incompatible_with_windows_tls]
*/
(function() {
"use strict";
load("jstests/core/txns/libs/prepare_helpers.js");
load("jstests/replsets/libs/tenant_migration_test.js");
load("jstests/replsets/libs/tenant_migration_util.js");
load("jstests/replsets/rslib.js");
load("jstests/libs/uuid_util.js");
const tenantMigrationTest = new TenantMigrationTest({name: jsTestName()});
if (!tenantMigrationTest.isFeatureFlagEnabled()) {
jsTestLog("Skipping test because the tenant migrations feature flag is disabled");
return;
}
const tenantId = "testTenantId";
const tenantDB = tenantMigrationTest.tenantDB(tenantId, "testDB");
const nonTenantDB = tenantMigrationTest.nonTenantDB(tenantId, "testDB");
const collName = "testColl";
const tenantNS = `${tenantDB}.${collName}`;
const transactionsNS = "config.transactions";
const donorPrimary = tenantMigrationTest.getDonorPrimary();
const recipientPrimary = tenantMigrationTest.getRecipientPrimary();
assert.commandWorked(donorPrimary.getCollection(tenantNS).insert([{_id: 0, x: 0}, {_id: 1, x: 1}],
{writeConcern: {w: "majority"}}));
{
jsTestLog("Run and commit a transaction prior to the migration");
const session = donorPrimary.startSession({causalConsistency: false});
const sessionDb = session.getDatabase(tenantDB);
const sessionColl = sessionDb.getCollection(collName);
session.startTransaction({writeConcern: {w: "majority"}});
const findAndModifyRes0 = sessionColl.findAndModify({query: {x: 0}, remove: true});
assert.eq({_id: 0, x: 0}, findAndModifyRes0);
assert.commandWorked(session.commitTransaction_forTesting());
assert.sameMembers(sessionColl.find({}).toArray(), [{_id: 1, x: 1}]);
session.endSession();
}
// This should be the only transaction entry on the donor fetched by the recipient.
const fetchedDonorTxnEntry = donorPrimary.getCollection(transactionsNS).find().toArray();
{
jsTestLog("Run and abort a transaction prior to the migration");
const session = donorPrimary.startSession({causalConsistency: false});
const sessionDb = session.getDatabase(tenantDB);
const sessionColl = sessionDb.getCollection(collName);
session.startTransaction({writeConcern: {w: "majority"}});
const findAndModifyRes0 = sessionColl.findAndModify({query: {x: 1}, remove: true});
assert.eq({_id: 1, x: 1}, findAndModifyRes0);
// We prepare the transaction so that 'abortTransaction' will update the transactions table. We
// should later see that the recipient will not update its transactions table with this entry,
// since we only fetch committed transactions.
PrepareHelpers.prepareTransaction(session);
assert.commandWorked(session.abortTransaction_forTesting());
assert.sameMembers(sessionColl.find({}).toArray(), [{_id: 1, x: 1}]);
session.endSession();
}
{
jsTestLog("Run and commit a transaction that does not belong to the tenant");
const session = donorPrimary.startSession({causalConsistency: false});
const sessionDb = session.getDatabase(nonTenantDB);
const sessionColl = sessionDb.getCollection(collName);
session.startTransaction({writeConcern: {w: "majority"}});
assert.commandWorked(sessionColl.insert([{_id: 0, x: 0}, {_id: 1, x: 1}]));
assert.commandWorked(session.commitTransaction_forTesting());
session.endSession();
}
const fpAfterRetrievingStartOpTime = configureFailPoint(
recipientPrimary, "fpAfterRetrievingStartOpTimesMigrationRecipientInstance", {action: "hang"});
jsTestLog("Starting a migration");
const migrationId = UUID();
const migrationOpts = {
migrationIdString: extractUUIDFromObject(migrationId),
tenantId,
};
assert.commandWorked(tenantMigrationTest.startMigration(migrationOpts));
fpAfterRetrievingStartOpTime.wait();
{
jsTestLog("Run and commit a transaction in the middle of the migration");
const session = donorPrimary.startSession({causalConsistency: false});
const sessionDb = session.getDatabase(tenantDB);
const sessionColl = sessionDb.getCollection(collName);
session.startTransaction({writeConcern: {w: "majority"}});
assert.commandWorked(sessionColl.insert([{_id: 2, x: 2}, {_id: 3, x: 3}]));
assert.commandWorked(session.commitTransaction_forTesting());
session.endSession();
}
jsTestLog("Waiting for migration to complete");
fpAfterRetrievingStartOpTime.off();
assert.commandWorked(tenantMigrationTest.waitForMigrationToComplete(migrationOpts));
const donorTxnEntries = donorPrimary.getCollection(transactionsNS).find().toArray();
jsTestLog(`All donor entries: ${tojson(donorTxnEntries)}`);
assert.eq(4, donorTxnEntries.length, `donor transaction entries: ${tojson(donorTxnEntries)}`);
const recipientTxnEntries = recipientPrimary.getCollection(transactionsNS).find().toArray();
// Verify that the recipient has fetched and written only the first committed transaction entry from
// the donor.
assert.eq(
1, recipientTxnEntries.length, `recipient transaction entries: ${tojson(recipientTxnEntries)}`);
assert.eq(
fetchedDonorTxnEntry,
recipientTxnEntries,
`fetched donor transaction entries: ${
tojson(
fetchedDonorTxnEntry)}; recipient transaction entries: ${tojson(recipientTxnEntries)}`);
// Test that the client can retry 'commitTransaction' on the recipient.
const recipientTxnEntry = recipientTxnEntries[0];
assert.commandWorked(recipientPrimary.adminCommand({
commitTransaction: 1,
lsid: recipientTxnEntry._id,
txnNumber: recipientTxnEntry.txnNum,
autocommit: false,
}));
tenantMigrationTest.stop();
})();
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