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/**
* Tests that the oplog view on a tenant migration donor contains the information necessary to
* reproduce the retryable writes oplog chain.
*
* @tags: [
* incompatible_with_macos,
* incompatible_with_windows_tls,
* requires_majority_read_concern,
* requires_persistence,
* serverless,
* ]
*/
import {TenantMigrationTest} from "jstests/replsets/libs/tenant_migration_test.js";
const kGarbageCollectionDelayMS = 5 * 1000;
const donorRst = new ReplSetTest({
name: "donorRst",
nodes: 1,
nodeOptions: {
setParameter: {
// Set the delay before a donor state doc is garbage collected to be short to speed
// up the test.
tenantMigrationGarbageCollectionDelayMS: kGarbageCollectionDelayMS,
ttlMonitorSleepSecs: 1,
}
}
});
donorRst.startSet();
donorRst.initiate();
const tenantMigrationTest = new TenantMigrationTest({name: jsTestName(), donorRst});
const dbName = "test";
const collName = "collection";
const donorPrimary = tenantMigrationTest.getDonorPrimary();
const rsConn = new Mongo(donorRst.getURL());
const oplog = donorPrimary.getDB("local")["oplog.rs"];
const migrationOplogView = donorPrimary.getDB("local")["system.tenantMigration.oplogView"];
const session = rsConn.startSession({retryWrites: true});
const collection = session.getDatabase(dbName)[collName];
{
// Assert an oplog entry representing a retryable write only projects fields defined in the
// view. In this case, only `prevOpTime` will be projected since the following retryable write
// does not have a `preImageOpTime` or `postImageOpTime`.
assert.commandWorked(collection.insert({_id: "retryableWrite1"}));
const oplogEntry = oplog.find({"o._id": "retryableWrite1"}).next();
jsTestLog({"oplog entry": oplogEntry, "view": migrationOplogView.exists()});
assert(oplogEntry.hasOwnProperty("txnNumber"));
assert(oplogEntry.hasOwnProperty("prevOpTime"));
assert(oplogEntry.hasOwnProperty("stmtId"));
// Ensure only the fields we expect are present in the view.
const viewEntry = migrationOplogView.find({ts: oplogEntry["ts"]}).next();
jsTestLog({"view entry": viewEntry});
// The following two fields are filtered out of the view.
assert(!viewEntry.hasOwnProperty("txnNumber"));
assert(!viewEntry.hasOwnProperty("stmtId"));
// The following two fields are not present in the original oplog entry, so they will not be
// added to the view entry.
assert(!viewEntry.hasOwnProperty("postImageOpTime"));
assert(!viewEntry.hasOwnProperty("preImageOpTime"));
assert(viewEntry.hasOwnProperty("ns"));
assert(viewEntry.hasOwnProperty("ts"));
assert(viewEntry.hasOwnProperty("prevOpTime"));
}
{
// Assert that an oplog entry that belongs to a transaction will project its 'o.applyOps.ns'
// field. This is used to filter transactions that belong to the tenant.
const txnSession = rsConn.startSession();
const txnDb = txnSession.getDatabase(dbName);
const txnColl = txnDb.getCollection(collName);
assert.commandWorked(txnColl.insert({_id: 'insertDoc'}));
txnSession.startTransaction({writeConcern: {w: "majority"}});
assert.commandWorked(txnColl.insert({_id: 'transaction0'}));
assert.commandWorked(txnColl.insert({_id: 'transaction1'}));
assert.commandWorked(txnSession.commitTransaction_forTesting());
const txnEntryOnDonor =
donorPrimary.getCollection("config.transactions").find({state: "committed"}).toArray()[0];
jsTestLog(`Txn entry on donor: ${tojson(txnEntryOnDonor)}`);
const viewEntry = migrationOplogView.find({ts: txnEntryOnDonor.lastWriteOpTime.ts}).next();
jsTestLog(`Transaction view entry: ${tojson(viewEntry)}`);
// The following fields are filtered out of the view.
assert(!viewEntry.hasOwnProperty("txnNumber"));
assert(!viewEntry.hasOwnProperty("state"));
assert(!viewEntry.hasOwnProperty("preImageOpTime"));
assert(!viewEntry.hasOwnProperty("postImageOpTime"));
assert(!viewEntry.hasOwnProperty("stmtId"));
// Verify that the view entry has the following fields.
assert(viewEntry.hasOwnProperty("ns"));
assert(viewEntry.hasOwnProperty("ts"));
assert(viewEntry.hasOwnProperty("applyOpsNs"));
// Assert that 'applyOpsNs' contains the namespace of the inserts.
assert.eq(viewEntry.applyOpsNs, `${dbName}.${collName}`);
}
donorRst.stopSet();
tenantMigrationTest.stop();
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