mongodb/jstests/gle/gle_sharded_write.js

//
// Ensures GLE correctly reports basic write stats and failures
// Note that test should work correctly with and without write commands.
//

// Checking UUID consistency involves talking to shards, but this test shuts down one shard.
TestData.skipCheckingUUIDsConsistentAcrossCluster = true;

(function() {
'use strict';

var st = new ShardingTest({shards: 2, mongos: 1, verbose: 3});

var mongos = st.s0;
var admin = mongos.getDB("admin");
var config = mongos.getDB("config");
var coll = mongos.getCollection(jsTestName() + ".coll");
var shards = config.shards.find().toArray();

assert.commandWorked(admin.runCommand({enableSharding: coll.getDB().toString()}));
printjson(admin.runCommand({movePrimary: coll.getDB().toString(), to: shards[0]._id}));
assert.commandWorked(admin.runCommand({shardCollection: coll.toString(), key: {_id: 1}}));
assert.commandWorked(admin.runCommand({split: coll.toString(), middle: {_id: 0}}));
assert.commandWorked(
    admin.runCommand({moveChunk: coll.toString(), find: {_id: 0}, to: shards[1]._id}));

st.printShardingStatus();

var gle = null;

//
// Successful insert
coll.remove({});
coll.insert({_id: -1});
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert('err' in gle);
assert(!gle.err);
assert.eq(coll.count(), 1);

//
// Successful update
coll.remove({});
coll.insert({_id: 1});
coll.update({_id: 1}, {$set: {foo: "bar"}});
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert('err' in gle);
assert(!gle.err);
assert(gle.updatedExisting);
assert.eq(gle.n, 1);
assert.eq(coll.count(), 1);

//
// Successful multi-update
coll.remove({});
coll.insert({_id: 1});
coll.update({}, {$set: {foo: "bar"}}, false, true);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert('err' in gle);
assert(!gle.err);
assert(gle.updatedExisting);
assert.eq(gle.n, 1);
assert.eq(coll.count(), 1);

//
// Successful upsert
coll.remove({});
coll.update({_id: 1}, {_id: 1}, true);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert('err' in gle);
assert(!gle.err);
assert(!gle.updatedExisting);
assert.eq(gle.n, 1);
assert.eq(gle.upserted, 1);
assert.eq(coll.count(), 1);

//
// Successful upserts
coll.remove({});
coll.update({_id: -1}, {_id: -1}, true);
coll.update({_id: 1}, {_id: 1}, true);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert('err' in gle);
assert(!gle.err);
assert(!gle.updatedExisting);
assert.eq(gle.n, 1);
assert.eq(gle.upserted, 1);
assert.eq(coll.count(), 2);

//
// Successful remove
coll.remove({});
coll.insert({_id: 1});
coll.remove({_id: 1});
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert('err' in gle);
assert(!gle.err);
assert.eq(gle.n, 1);
assert.eq(coll.count(), 0);

//
// Error on one host during update
coll.remove({});
coll.update({_id: 1}, {$invalid: "xxx"}, true);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert(gle.err);
assert(gle.code);
assert(!gle.errmsg);
assert(gle.singleShard);
assert.eq(coll.count(), 0);

//
// Error on two hosts during remove
coll.remove({});
coll.remove({$invalid: 'remove'});
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert(gle.err);
assert(gle.code);
assert(!gle.errmsg);
assert(gle.shards);
assert.eq(coll.count(), 0);

//
// Repeated calls to GLE should work
coll.remove({});
coll.update({_id: 1}, {$invalid: "xxx"}, true);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert(gle.err);
assert(gle.code);
assert(!gle.errmsg);
assert(gle.singleShard);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert(gle.err);
assert(gle.code);
assert(!gle.errmsg);
assert(gle.singleShard);
assert.eq(coll.count(), 0);

//
// First shard down
//

//
// Successful bulk insert on two hosts, host dies before gle (error contacting host)
coll.remove({});
coll.insert([{_id: 1}, {_id: -1}]);
// Wait for write to be written to shards before shutting it down.
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
st.rs0.stopSet();

printjson(gle = coll.getDB().runCommand({getLastError: 1}));
// Should get an error about contacting dead host.
assert(!gle.ok);
assert(gle.errmsg);

//
// Failed insert on two hosts, first host dead
// NOTE: This is DIFFERENT from 2.4, since we don't need to contact a host we didn't get
// successful writes from.
coll.remove({_id: 1});
coll.insert([{_id: 1}, {_id: -1}]);
printjson(gle = coll.getDB().runCommand({getLastError: 1}));
assert(gle.ok);
assert(gle.err);
assert.eq(coll.count({_id: 1}), 1);

st.stop();
})();