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/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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 <string>
#include "mongo/db/repl/repl_settings.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/repl/replication_executor.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
class BSONObj;
struct HostAndPort;
namespace executor {
class NetworkInterfaceMock;
} // namespace executor
namespace repl {
class ReplicaSetConfig;
class ReplicationCoordinatorExternalStateMock;
class ReplicationCoordinatorImpl;
class StorageInterfaceMock;
class TopologyCoordinatorImpl;
/**
* Fixture for testing ReplicationCoordinatorImpl behaviors.
*/
class ReplCoordTest : public mongo::unittest::Test {
public:
/**
* Makes a ResponseStatus with the given "doc" response and optional elapsed time "millis".
*/
static ResponseStatus makeResponseStatus(const BSONObj& doc,
Milliseconds millis = Milliseconds(0));
/**
* Constructs a ReplicaSetConfig from the given BSON, or raises a test failure exception.
*/
static ReplicaSetConfig assertMakeRSConfig(const BSONObj& configBSON);
ReplCoordTest();
virtual ~ReplCoordTest();
protected:
virtual void setUp();
virtual void tearDown();
/**
* Gets the network mock.
*/
executor::NetworkInterfaceMock* getNet() {
return _net;
}
/**
* Gets the replication coordinator under test.
*/
ReplicationCoordinatorImpl* getReplCoord() {
return _repl.get();
}
/**
* Gets the topology coordinator used by the replication coordinator under test.
*/
TopologyCoordinatorImpl& getTopoCoord() {
return *_topo;
}
/**
* Gets the external state used by the replication coordinator under test.
*/
ReplicationCoordinatorExternalStateMock* getExternalState() {
return _externalState;
}
/**
* Adds "selfHost" to the list of hosts that identify as "this" host.
*/
void addSelf(const HostAndPort& selfHost);
/**
* Moves time forward in the network until the new time, and asserts if now!=newTime after
*/
void assertRunUntil(Date_t newTime);
/**
* Shorthand for getNet()->enterNetwork()
*/
void enterNetwork();
/**
* Shorthand for getNet()->exitNetwork()
*/
void exitNetwork();
/**
* Initializes the objects under test; this behavior is optional, in case you need to call
* any methods on the network or coordinator objects before calling start.
*/
void init();
/**
* Initializes the objects under test, using the given "settings".
*/
void init(const ReplSettings& settings);
/**
* Initializes the objects under test, using "replSet" as the name of the replica set under
* test.
*/
void init(const std::string& replSet);
/**
* Starts the replication coordinator under test, with no local config document and
* no notion of what host or hosts are represented by the network interface.
*/
void start();
/**
* Starts the replication coordinator under test, with the given configuration in
* local storage and the given host name.
*/
void start(const BSONObj& configDoc, const HostAndPort& selfHost);
/**
* Starts the replication coordinator under test with the given host name.
*/
void start(const HostAndPort& selfHost);
/**
* Brings the repl coord from SECONDARY to PRIMARY by simulating the messages required to
* elect it.
*
* Behavior is unspecified if node does not have a clean config, is not in SECONDARY, etc.
*/
void simulateSuccessfulElection();
void simulateSuccessfulV1Election();
/**
* Brings the repl coord from PRIMARY to SECONDARY by simulating a period of time in which
* all heartbeats respond with an error condition, such as time out.
*/
void simulateStepDownOnIsolation();
/**
* Asserts that calling start(configDoc, selfHost) successfully initiates the
* ReplicationCoordinator under test.
*/
void assertStartSuccess(const BSONObj& configDoc, const HostAndPort& selfHost);
/**
* Shuts down the objects under test.
*/
void shutdown();
/**
* Returns the number of collected log lines containing "needle".
*/
int64_t countLogLinesContaining(const std::string& needle);
private:
std::unique_ptr<ReplicationCoordinatorImpl> _repl;
// Owned by ReplicationCoordinatorImpl
TopologyCoordinatorImpl* _topo;
// Owned by ReplicationCoordinatorImpl
executor::NetworkInterfaceMock* _net;
// Owned by ReplicationCoordinatorImpl
StorageInterfaceMock* _storage;
// Owned by ReplicationCoordinatorImpl
ReplicationCoordinatorExternalStateMock* _externalState;
ReplSettings _settings;
bool _callShutdown;
};
} // namespace repl
} // namespace mongo
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