44 lines
1.6 KiB
JavaScript
44 lines
1.6 KiB
JavaScript
// Test that the shell helper supports causal consistency.
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//
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// @tags: [
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// # The test runs commands that are not allowed with security token: endSession.
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// not_allowed_with_signed_security_token,
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// uses_transactions,
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// uses_snapshot_read_concern
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// ]
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// TODO (SERVER-39704): Remove the following load after SERVER-39704 is completed
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import {withTxnAndAutoRetryOnMongos} from "jstests/libs/auto_retry_transaction_in_sharding.js";
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const dbName = "test";
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const collName = "basic_causal_consistency";
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const testDB = db.getSiblingDB(dbName);
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testDB.runCommand({drop: collName, writeConcern: {w: "majority"}});
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assert.commandWorked(testDB.runCommand({create: collName, writeConcern: {w: "majority"}}));
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const sessionOptions = {
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causalConsistency: true,
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};
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const session = testDB.getMongo().startSession(sessionOptions);
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const sessionDb = session.getDatabase(dbName);
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const sessionColl = sessionDb.getCollection(collName);
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// TODO (SERVER-39704): We use the withTxnAndAutoRetryOnMongos
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// function to handle how MongoS will propagate a StaleShardVersion error as a
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// TransientTransactionError. After SERVER-39704 is completed the
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// withTxnAndAutoRetryOnMongos function can be removed
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withTxnAndAutoRetryOnMongos(session, () => {
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// Performing a read first should work when snapshot readConcern is specified.
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assert.docEq(null, sessionColl.findOne({_id: "insert-1"}));
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assert.commandWorked(sessionColl.insert({_id: "insert-1"}));
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assert.docEq(null, sessionColl.findOne({_id: "insert-2"}));
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assert.docEq({_id: "insert-1"}, sessionColl.findOne({_id: "insert-1"}));
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});
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session.endSession();
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