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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.
*/
#pragma once
#include <initializer_list>
#include <ostream>
#include <string>
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/bsonobj_comparator_interface.h"
#include "mongo/bson/simple_bsonobj_comparator.h"
#include "mongo/bson/timestamp.h"
#include "mongo/db/catalog/collection_options.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/repl/oplog_applier_impl_test_fixture.h"
#include "mongo/db/repl/oplog_entry.h"
#include "mongo/db/repl/optime.h"
#include "mongo/db/session/logical_session_id.h"
#include "mongo/util/duration.h"
#include "mongo/util/uuid.h"
namespace mongo {
class Collection;
class CollectionPtr;
namespace repl {
struct CollectionState {
CollectionState() = default;
CollectionState(CollectionOptions collectionOptions_,
BSONObjSet indexSpecs_,
std::string dataHash_);
/**
* Compares BSON objects (BSONObj) in two sets of BSON objects (BSONObjSet) to see if the two
* sets are equivalent.
*
* Two sets are equivalent if and only if their sizes are the same and all of their elements
* that share the same index position are also equivalent in value.
*/
bool cmpIndexSpecs(const BSONObjSet& otherSpecs) const;
/**
* Returns a std::string representation of the CollectionState struct of which this is a member
* function. Returns out its representation in the form:
*
* Collection options: {...}; Index options: [...]; MD5 hash: <md5 digest string>
*/
std::string toString() const;
const CollectionOptions collectionOptions = CollectionOptions();
const BSONObjSet indexSpecs = SimpleBSONObjComparator::kInstance.makeBSONObjSet();
const std::string dataHash = "";
const bool exists = false;
};
bool operator==(const CollectionState& lhs, const CollectionState& rhs);
bool operator!=(const CollectionState& lhs, const CollectionState& rhs);
std::ostream& operator<<(std::ostream& stream, const CollectionState& state);
StringBuilder& operator<<(StringBuilder& sb, const CollectionState& state);
class IdempotencyTest : public OplogApplierImplTest {
public:
IdempotencyTest() : _nss(boost::none, "test.foo") {
globalFailPointRegistry()
.find("doUntimestampedWritesForIdempotencyTests")
->setMode(FailPoint::alwaysOn);
}
~IdempotencyTest() {
globalFailPointRegistry()
.find("doUntimestampedWritesForIdempotencyTests")
->setMode(FailPoint::off);
}
protected:
enum class SequenceType : int { kEntireSequence, kAnyPrefix, kAnySuffix, kAnyPrefixOrSuffix };
OplogEntry createCollection(UUID uuid = UUID::gen());
OplogEntry dropCollection();
OplogEntry insert(const BSONObj& obj);
template <class IdType>
OplogEntry update(IdType _id, const BSONObj& obj);
OplogEntry buildIndex(const BSONObj& indexSpec, const BSONObj& options, const UUID& uuid);
OplogEntry dropIndex(const std::string& indexName, const UUID& uuid);
OplogEntry prepare(LogicalSessionId lsid,
TxnNumber txnNum,
StmtId stmtId,
const BSONArray& ops,
OpTime prevOpTime = OpTime());
OplogEntry commitUnprepared(LogicalSessionId lsid,
TxnNumber txnNum,
StmtId stmtId,
const BSONArray& ops,
OpTime prevOpTime = OpTime());
OplogEntry commitPrepared(LogicalSessionId lsid,
TxnNumber txnNum,
StmtId stmtId,
OpTime prepareOpTime);
OplogEntry abortPrepared(LogicalSessionId lsid,
TxnNumber txnNum,
StmtId stmtId,
OpTime prepareOpTime);
OplogEntry partialTxn(LogicalSessionId lsid,
TxnNumber txnNum,
StmtId stmtId,
OpTime prevOpTime,
const BSONArray& ops);
virtual Status resetState();
void setNss(const NamespaceString& nss);
/**
* This method returns true if running the list of operations a single time is equivalent to
* running them two times. It returns false otherwise.
*/
void testOpsAreIdempotent(std::vector<OplogEntry> ops,
SequenceType sequenceType = SequenceType::kEntireSequence);
/**
* This function exists to work around the issue described in SERVER-30470 by providing a
* mechanism for the RandomizedIdempotencyTest class to avoid triggering failures caused by
* differences in the ordering of fields within a document. By default it returns the document
* unchanged.
*/
virtual BSONObj canonicalizeDocumentForDataHash(const BSONObj& obj) {
return obj;
};
std::string computeDataHash(const CollectionPtr& collection);
virtual std::string getStatesString(const std::vector<CollectionState>& state1,
const std::vector<CollectionState>& state2,
const std::vector<OplogEntry>& state1Ops,
const std::vector<OplogEntry>& state2Ops);
/**
* Validate data and indexes. Return the MD5 hash of the documents ordered by _id.
*/
CollectionState validate(const NamespaceString& nss);
std::vector<CollectionState> validateAllCollections();
NamespaceString _nss;
};
} // namespace repl
} // namespace mongo
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