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/**
* Tests readConcern: afterClusterTime behavior in a sharded cluster.
* @tags: [requires_majority_read_concern]
*/
(function() {
"use strict";
load("jstests/replsets/rslib.js"); // For startSetIfSupportsReadMajority.
function assertAfterClusterTimeReadFailsWithCode(db, readConcernObj, errorCode) {
return assert.commandFailedWithCode(
db.runCommand({find: "foo", readConcern: readConcernObj}),
errorCode,
"expected command with read concern options: " + tojson(readConcernObj) + " to fail");
}
function assertAfterClusterTimeReadSucceeds(db, readConcernObj) {
return assert.commandWorked(db.runCommand({find: "foo", readConcern: readConcernObj}),
"expected command with read concern options: " +
tojson(readConcernObj) + " to succeed");
}
const rst = new ReplSetTest({
nodes: 1,
nodeOptions: {
enableMajorityReadConcern: "",
shardsvr: "",
}
});
if (!startSetIfSupportsReadMajority(rst)) {
jsTestLog("Skipping test since storage engine doesn't support majority read concern.");
rst.stopSet();
return;
}
rst.initiate();
// Start the sharding test and add the majority read concern enabled replica set.
const st = new ShardingTest({manualAddShard: true});
assert.commandWorked(st.s.adminCommand({addShard: rst.getURL()}));
const testDB = st.s.getDB("test");
// Insert some data to find later.
assert.commandWorked(testDB.runCommand(
{insert: "foo", documents: [{_id: 1, x: 1}], writeConcern: {w: "majority"}}));
// Test the afterClusterTime API without causal consistency enabled on the mongo connection.
assertAfterClusterTimeReadFailsWithCode(
testDB,
{level: "linearizable", afterClusterTime: Timestamp(1, 1)},
ErrorCodes.InvalidOptions);
// Reads with afterClusterTime require a non-zero timestamp.
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "local", afterClusterTime: {}}, ErrorCodes.TypeMismatch);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "local", afterClusterTime: 10}, ErrorCodes.TypeMismatch);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "local", afterClusterTime: Timestamp()}, ErrorCodes.InvalidOptions);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "local", afterClusterTime: Timestamp(0, 0)}, ErrorCodes.InvalidOptions);
// Reads with proper afterClusterTime arguments return committed data after the given time.
// Reads with afterClusterTime require a non-zero timestamp.
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: {}}, ErrorCodes.TypeMismatch);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: 10}, ErrorCodes.TypeMismatch);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: Timestamp()}, ErrorCodes.InvalidOptions);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: Timestamp(0, 0)}, ErrorCodes.InvalidOptions);
// Reads with proper afterClusterTime arguments return committed data after the given time.
let testReadOwnWrite = function(readConcern) {
let res = assert.commandWorked(testDB.runCommand(
{find: "foo", readConcern: {level: readConcern, afterClusterTime: Timestamp(1, 1)}}));
assert.eq(res.cursor.firstBatch,
[{_id: 1, x: 1}],
"expected afterClusterTime read to return the committed document");
// Test the afterClusterTime API with causal consistency enabled on the mongo connection.
testDB.getMongo().setCausalConsistency(true);
// With causal consistency enabled, the shell sets read concern to level "majority" if it is
// not specified.
assertAfterClusterTimeReadSucceeds(testDB, {afterClusterTime: Timestamp(1, 1)});
testDB.getMongo().setCausalConsistency(false);
};
testReadOwnWrite("local");
testReadOwnWrite("majority");
// Read concern levels other than majority are still not accepted.
assertAfterClusterTimeReadFailsWithCode(
testDB,
{level: "linearizable", afterClusterTime: Timestamp(1, 1)},
ErrorCodes.InvalidOptions);
// Reads with afterClusterTime still require a non-zero timestamp.
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: {}}, ErrorCodes.TypeMismatch);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: 10}, ErrorCodes.TypeMismatch);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: Timestamp()}, ErrorCodes.InvalidOptions);
assertAfterClusterTimeReadFailsWithCode(
testDB, {level: "majority", afterClusterTime: Timestamp(0, 0)}, ErrorCodes.InvalidOptions);
rst.stopSet();
st.stop();
})();
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