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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 <deque>
#include <memory>
#include <set>
#include "mongo/executor/connection_pool.h"
namespace mongo {
namespace executor {
namespace connection_pool_test_details {
class ConnectionPoolTest;
class PoolImpl;
/**
* Mock interface for the timer
*/
class TimerImpl final : public ConnectionPool::TimerInterface {
public:
TimerImpl(PoolImpl* global);
~TimerImpl() override;
void setTimeout(Milliseconds timeout, TimeoutCallback cb) override;
void cancelTimeout() override;
Date_t now() override;
// launches all timers for whom now() has passed
static void fireIfNecessary();
// dump all timers
static void clear();
private:
static std::set<TimerImpl*> _timers;
TimeoutCallback _cb;
PoolImpl* _global;
Date_t _expiration;
};
/**
* Mock interface for the connections
*
* pushSetup() and pushRefresh() calls can be queued up ahead of time (in which
* case callbacks immediately fire), or calls queue up and pushSetup() and
* pushRefresh() fire as they're called.
*/
class ConnectionImpl final : public ConnectionPool::ConnectionInterface {
public:
using PushSetupCallback = stdx::function<Status()>;
using PushRefreshCallback = stdx::function<Status()>;
ConnectionImpl(const HostAndPort& hostAndPort, size_t generation, PoolImpl* global);
size_t id() const;
const HostAndPort& getHostAndPort() const override;
transport::ConnectSSLMode getSslMode() const override {
return transport::kGlobalSSLMode;
}
bool isHealthy() override;
// Dump all connection callbacks
static void clear();
// Push either a callback that returns the status for a setup, or just the Status
static void pushSetup(PushSetupCallback status);
static void pushSetup(Status status);
static size_t setupQueueDepth();
// Push either a callback that returns the status for a refresh, or just the Status
static void pushRefresh(PushRefreshCallback status);
static void pushRefresh(Status status);
static size_t refreshQueueDepth();
void setTimeout(Milliseconds timeout, TimeoutCallback cb) override;
void cancelTimeout() override;
Date_t now() override;
private:
void setup(Milliseconds timeout, SetupCallback cb) override;
void refresh(Milliseconds timeout, RefreshCallback cb) override;
HostAndPort _hostAndPort;
SetupCallback _setupCallback;
RefreshCallback _refreshCallback;
TimerImpl _timer;
PoolImpl* _global;
size_t _id;
// Answer queues
static std::deque<PushSetupCallback> _pushSetupQueue;
static std::deque<PushRefreshCallback> _pushRefreshQueue;
// Question queues
static std::deque<ConnectionImpl*> _setupQueue;
static std::deque<ConnectionImpl*> _refreshQueue;
static size_t _idCounter;
};
/**
* Mock for the pool implementation
*/
class PoolImpl final : public ConnectionPool::DependentTypeFactoryInterface {
friend class ConnectionImpl;
public:
std::shared_ptr<ConnectionPool::ConnectionInterface> makeConnection(
const HostAndPort& hostAndPort,
transport::ConnectSSLMode sslMode,
size_t generation) override;
std::shared_ptr<ConnectionPool::TimerInterface> makeTimer() override;
Date_t now() override;
void shutdown() override {
TimerImpl::clear();
};
/**
* setNow() can be used to fire all timers that have passed a point in time
*/
static void setNow(Date_t now);
private:
ConnectionPool* _pool = nullptr;
static boost::optional<Date_t> _now;
};
} // namespace connection_pool_test_details
} // namespace executor
} // namespace mongo
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