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// Test parsing of readConcern level 'snapshot'.
(function() {
"use strict";
const dbName = "test";
const collName = "coll";
//
// Configurations.
//
// readConcern 'snapshot' should fail on storage engines that do not support it.
let rst = new ReplSetTest({nodes: 1});
rst.startSet();
rst.initiate();
if (!rst.getPrimary().getDB(dbName).serverStatus().storageEngine.supportsSnapshotReadConcern) {
assert.commandFailedWithCode(rst.getPrimary().getDB(dbName).runCommand(
{find: collName, readConcern: {level: "snapshot"}}),
ErrorCodes.InvalidOptions);
rst.stopSet();
return;
}
rst.stopSet();
// readConcern 'snapshot' is not allowed on a standalone.
const conn = MongoRunner.runMongod();
assert.neq(null, conn, "mongod was unable to start up");
assert.commandFailedWithCode(
conn.getDB(dbName).runCommand({find: collName, readConcern: {level: "snapshot"}}),
ErrorCodes.NotAReplicaSet);
MongoRunner.stopMongod(conn);
// readConcern 'snapshot' is not allowed on mongos.
const st = new ShardingTest({shards: 1, rs: {nodes: 1}});
assert.commandFailedWithCode(
st.getDB(dbName).runCommand({find: collName, readConcern: {level: "snapshot"}}),
ErrorCodes.InvalidOptions);
st.stop();
// readConcern 'snapshot' is not allowed with protocol version 0.
rst = new ReplSetTest({nodes: 1, protocolVersion: 0});
rst.startSet();
rst.initiate();
assert.commandFailedWithCode(rst.getPrimary().getDB(dbName).runCommand(
{find: collName, readConcern: {level: "snapshot"}}),
ErrorCodes.IncompatibleElectionProtocol);
rst.stopSet();
// readConcern 'snapshot' is allowed on a replica set primary.
rst = new ReplSetTest({nodes: 2});
rst.startSet();
rst.initiate();
assert.commandWorked(rst.getPrimary().getDB(dbName).runCommand(
{find: collName, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is allowed on a replica set secondary.
assert.commandWorked(rst.getSecondary().getDB(dbName).runCommand(
{find: collName, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is allowed with 'afterClusterTime'.
const pingRes = assert.commandWorked(rst.getPrimary().adminCommand({ping: 1}));
assert(pingRes.hasOwnProperty("$clusterTime"), tojson(pingRes));
assert(pingRes.$clusterTime.hasOwnProperty("clusterTime"), tojson(pingRes));
assert.commandWorked(rst.getPrimary().getDB(dbName).runCommand({
find: collName,
readConcern: {level: "snapshot", afterClusterTime: pingRes.$clusterTime.clusterTime}
}));
// readConcern 'snapshot' is not allowed with 'afterOpTime'.
assert.commandFailedWithCode(rst.getPrimary().getDB(dbName).runCommand({
find: collName,
readConcern: {level: "snapshot", afterOpTime: {ts: Timestamp(1, 2), t: 1}}
}),
ErrorCodes.InvalidOptions);
rst.stopSet();
//
// Commands.
//
rst = new ReplSetTest({nodes: 1});
rst.startSet();
rst.initiate();
let testDB = rst.getPrimary().getDB(dbName);
let coll = testDB.coll;
assert.commandWorked(coll.createIndex({geo: "2d"}));
assert.commandWorked(coll.createIndex({haystack: "geoHaystack", a: 1}, {bucketSize: 1}));
// readConcern 'snapshot' is supported by aggregate.
assert.commandWorked(testDB.runCommand(
{aggregate: collName, pipeline: [], cursor: {}, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by count.
assert.commandWorked(testDB.runCommand({count: collName, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by distinct.
assert.commandWorked(testDB.runCommand({count: collName, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by find.
assert.commandWorked(testDB.runCommand({find: collName, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by geoNear.
assert.commandWorked(
testDB.runCommand({geoNear: collName, near: [0, 0], readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by geoSearch.
assert.commandWorked(testDB.runCommand({
geoSearch: collName,
near: [0, 0],
maxDistance: 1,
search: {a: 1},
readConcern: {level: "snapshot"}
}));
// readConcern 'snapshot' is supported by group.
assert.commandWorked(testDB.runCommand({
group: {ns: collName, key: {_id: 1}, $reduce: function(curr, result) {}, initial: {}},
readConcern: {level: "snapshot"}
}));
// readConcern 'snapshot' is supported by insert.
assert.commandWorked(
testDB.runCommand({insert: collName, documents: [{}], readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by update.
assert.commandWorked(testDB.runCommand({
update: collName,
updates: [{q: {}, u: {$set: {a: 1}}}],
readConcern: {level: "snapshot"}
}));
// readConcern 'snapshot' is supported by delete.
assert.commandWorked(testDB.runCommand(
{delete: collName, deletes: [{q: {}, limit: 1}], readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is supported by findAndModify.
assert.commandWorked(testDB.runCommand({
findAndModify: collName,
filter: {},
update: {$set: {a: 1}},
readConcern: {level: "snapshot"}
}));
// readConcern 'snapshot' is supported by parallelCollectionScan.
assert.commandWorked(testDB.runCommand(
{parallelCollectionScan: collName, numCursors: 1, readConcern: {level: "snapshot"}}));
// readConcern 'snapshot' is not supported by non-CRUD commands.
assert.commandFailedWithCode(testDB.runCommand({
createIndexes: collName,
indexes: [{key: {a: 1}, name: "a_1"}],
readConcern: {level: "snapshot"}
}),
ErrorCodes.InvalidOptions);
rst.stopSet();
}());
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