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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/client/remote_command_targeter_mock.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/op_observer_impl.h"
#include "mongo/db/op_observer_registry.h"
#include "mongo/db/repl/replication_coordinator_mock.h"
#include "mongo/db/s/config_server_op_observer.h"
#include "mongo/db/s/shard_server_catalog_cache_loader.h"
#include "mongo/db/s/shard_server_op_observer.h"
#include "mongo/db/s/sharding_initialization_mongod.h"
#include "mongo/db/s/type_shard_identity.h"
#include "mongo/db/server_options.h"
#include "mongo/s/catalog/dist_lock_manager_mock.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/config_server_catalog_cache_loader.h"
#include "mongo/s/sharding_mongod_test_fixture.h"
namespace mongo {
namespace {
const std::string kShardName("TestShard");
/**
* This test suite validates that when the default OpObserver chain is set up (which happens to
* include the ShardingMongodOpObserver), writes to the 'admin.system.version' collection (and the
* shardIdentity document specifically) will invoke the sharding initialization code.
*/
class ShardingInitializationOpObserverTest : public ShardingMongodTestFixture {
public:
void setUp() override {
ShardingMongodTestFixture::setUp();
// NOTE: this assumes that globalInit will always be called on the same thread as the main
// test thread
ShardingInitializationMongoD::get(operationContext())
->setGlobalInitMethodForTest([this](OperationContext* opCtx,
const ShardIdentity& shardIdentity,
StringData distLockProcessId) {
_initCallCount++;
return Status::OK();
});
}
void tearDown() override {
ShardingState::get(getServiceContext())->clearForTests();
ShardingMongodTestFixture::tearDown();
}
int getInitCallCount() const {
return _initCallCount;
}
private:
int _initCallCount = 0;
};
TEST_F(ShardingInitializationOpObserverTest, GlobalInitGetsCalledAfterWriteCommits) {
ShardIdentityType shardIdentity;
shardIdentity.setConfigsvrConnectionString(
ConnectionString(ConnectionString::SET, "a:1,b:2", "config"));
shardIdentity.setShardName(kShardName);
shardIdentity.setClusterId(OID::gen());
DBDirectClient client(operationContext());
client.insert("admin.system.version", shardIdentity.toShardIdentityDocument());
ASSERT_EQ(1, getInitCallCount());
}
TEST_F(ShardingInitializationOpObserverTest, GlobalInitDoesntGetCalledIfWriteAborts) {
ShardIdentityType shardIdentity;
shardIdentity.setConfigsvrConnectionString(
ConnectionString(ConnectionString::SET, "a:1,b:2", "config"));
shardIdentity.setShardName(kShardName);
shardIdentity.setClusterId(OID::gen());
// This part of the test ensures that the collection exists for the AutoGetCollection below to
// find and also validates that the initializer does not get called for non-sharding documents
DBDirectClient client(operationContext());
client.insert("admin.system.version", BSON("_id" << 1));
ASSERT_EQ(0, getInitCallCount());
{
AutoGetCollection autoColl(
operationContext(), NamespaceString("admin.system.version"), MODE_IX);
WriteUnitOfWork wuow(operationContext());
InsertStatement stmt(shardIdentity.toShardIdentityDocument());
ASSERT_OK(autoColl.getCollection()->insertDocument(operationContext(), stmt, nullptr));
ASSERT_EQ(0, getInitCallCount());
}
ASSERT_EQ(0, getInitCallCount());
}
TEST_F(ShardingInitializationOpObserverTest, GlobalInitDoesntGetsCalledIfNSIsNotForShardIdentity) {
ShardIdentityType shardIdentity;
shardIdentity.setConfigsvrConnectionString(
ConnectionString(ConnectionString::SET, "a:1,b:2", "config"));
shardIdentity.setShardName(kShardName);
shardIdentity.setClusterId(OID::gen());
DBDirectClient client(operationContext());
client.insert("admin.user", shardIdentity.toShardIdentityDocument());
ASSERT_EQ(0, getInitCallCount());
}
TEST_F(ShardingInitializationOpObserverTest, OnInsertOpThrowWithIncompleteShardIdentityDocument) {
DBDirectClient client(operationContext());
client.insert("admin.system.version",
BSON("_id" << ShardIdentityType::IdName << ShardIdentity::kShardNameFieldName
<< kShardName));
ASSERT(!client.getLastError().empty());
}
} // namespace
} // namespace mongo
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