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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/db/catalog_raii.h"
#include "mongo/db/s/collection_sharding_runtime.h"
#include "mongo/db/s/op_observer_sharding_impl.h"
#include "mongo/db/s/operation_sharding_state.h"
#include "mongo/db/s/type_shard_identity.h"
#include "mongo/s/shard_server_test_fixture.h"
namespace mongo {
namespace {
const NamespaceString kTestNss("TestDB", "TestColl");
/**
* Constructs a CollectionMetadata suitable for refreshing a CollectionShardingState. The only
* salient detail is the argument `keyPattern` which, defining the shard key, selects the fields
* that DeleteState's constructor will extract from its `doc` argument into its member
* DeleteState::documentKey.
*/
CollectionMetadata makeAMetadata(BSONObj const& keyPattern) {
const OID epoch = OID::gen();
auto range = ChunkRange(BSON("key" << MINKEY), BSON("key" << MAXKEY));
auto chunk = ChunkType(kTestNss, std::move(range), ChunkVersion(1, 0, epoch), ShardId("other"));
auto rt = RoutingTableHistory::makeNew(
kTestNss, UUID::gen(), KeyPattern(keyPattern), nullptr, false, epoch, {std::move(chunk)});
std::shared_ptr<ChunkManager> cm = std::make_shared<ChunkManager>(rt, Timestamp(100, 0));
return CollectionMetadata(std::move(cm), ShardId("this"));
}
class DeleteStateTest : public ShardServerTestFixture {
protected:
void setCollectionFilteringMetadata(CollectionMetadata metadata) {
AutoGetCollection autoColl(operationContext(), kTestNss, MODE_X);
auto* const css = CollectionShardingRuntime::get(operationContext(), kTestNss);
css->setFilteringMetadata(operationContext(), std::move(metadata));
auto& oss = OperationShardingState::get(operationContext());
const auto version = metadata.getShardVersion();
BSONObjBuilder builder;
version.appendToCommand(&builder);
oss.initializeClientRoutingVersions(kTestNss, builder.obj());
}
};
TEST_F(DeleteStateTest, MakeDeleteStateUnsharded) {
setCollectionFilteringMetadata(CollectionMetadata());
AutoGetCollection autoColl(operationContext(), kTestNss, MODE_IX);
auto doc = BSON("key3"
<< "abc"
<< "key" << 3 << "_id"
<< "hello"
<< "key2" << true);
// Check that an order for deletion from an unsharded collection extracts just the "_id" field
ASSERT_BSONOBJ_EQ(OpObserverImpl::getDocumentKey(operationContext(), kTestNss, doc),
BSON("_id"
<< "hello"));
ASSERT_FALSE(OpObserverShardingImpl::isMigrating(operationContext(), kTestNss, doc));
}
TEST_F(DeleteStateTest, MakeDeleteStateShardedWithoutIdInShardKey) {
// Push a CollectionMetadata with a shard key not including "_id"...
setCollectionFilteringMetadata(makeAMetadata(BSON("key" << 1 << "key3" << 1)));
AutoGetCollection autoColl(operationContext(), kTestNss, MODE_IX);
// The order of fields in `doc` deliberately does not match the shard key
auto doc = BSON("key3"
<< "abc"
<< "key" << 100 << "_id"
<< "hello"
<< "key2" << true);
// Verify the shard key is extracted, in correct order, followed by the "_id" field.
ASSERT_BSONOBJ_EQ(OpObserverImpl::getDocumentKey(operationContext(), kTestNss, doc),
BSON("key" << 100 << "key3"
<< "abc"
<< "_id"
<< "hello"));
ASSERT_FALSE(OpObserverShardingImpl::isMigrating(operationContext(), kTestNss, doc));
}
TEST_F(DeleteStateTest, MakeDeleteStateShardedWithIdInShardKey) {
// Push a CollectionMetadata with a shard key that does have "_id" in the middle...
setCollectionFilteringMetadata(makeAMetadata(BSON("key" << 1 << "_id" << 1 << "key2" << 1)));
AutoGetCollection autoColl(operationContext(), kTestNss, MODE_IX);
// The order of fields in `doc` deliberately does not match the shard key
auto doc = BSON("key2" << true << "key3"
<< "abc"
<< "_id"
<< "hello"
<< "key" << 100);
// Verify the shard key is extracted with "_id" in the right place.
ASSERT_BSONOBJ_EQ(OpObserverImpl::getDocumentKey(operationContext(), kTestNss, doc),
BSON("key" << 100 << "_id"
<< "hello"
<< "key2" << true));
ASSERT_FALSE(OpObserverShardingImpl::isMigrating(operationContext(), kTestNss, doc));
}
TEST_F(DeleteStateTest, MakeDeleteStateShardedWithIdHashInShardKey) {
// Push a CollectionMetadata with a shard key "_id", hashed.
setCollectionFilteringMetadata(makeAMetadata(BSON("_id"
<< "hashed")));
AutoGetCollection autoColl(operationContext(), kTestNss, MODE_IX);
auto doc = BSON("key2" << true << "_id"
<< "hello"
<< "key" << 100);
// Verify the shard key is extracted with "_id" in the right place, not hashed.
ASSERT_BSONOBJ_EQ(OpObserverImpl::getDocumentKey(operationContext(), kTestNss, doc),
BSON("_id"
<< "hello"));
ASSERT_FALSE(OpObserverShardingImpl::isMigrating(operationContext(), kTestNss, doc));
}
} // namespace
} // namespace mongo
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