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/* Copyright 2012 10gen 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/dbtests/mock/mock_remote_db_server.h"
#include <tuple>
#include "mongo/dbtests/mock/mock_dbclient_connection.h"
#include "mongo/rpc/command_reply.h"
#include "mongo/rpc/command_reply_builder.h"
#include "mongo/rpc/metadata.h"
#include "mongo/stdx/memory.h"
#include "mongo/util/mongoutils/str.h"
#include "mongo/util/net/sock.h"
#include "mongo/util/time_support.h"
#include "mongo/util/assert_util.h"
using std::string;
using std::vector;
namespace mongo {
MockRemoteDBServer::CircularBSONIterator::CircularBSONIterator(const vector<BSONObj>& replyVector) {
for (std::vector<mongo::BSONObj>::const_iterator iter = replyVector.begin();
iter != replyVector.end();
++iter) {
_replyObjs.push_back(iter->copy());
}
_iter = _replyObjs.begin();
}
BSONObj MockRemoteDBServer::CircularBSONIterator::next() {
verify(_iter != _replyObjs.end());
BSONObj reply = _iter->copy();
++_iter;
if (_iter == _replyObjs.end()) {
_iter = _replyObjs.begin();
}
return reply;
}
MockRemoteDBServer::MockRemoteDBServer(const string& hostAndPort)
: _isRunning(true),
_hostAndPort(hostAndPort),
_delayMilliSec(0),
_cmdCount(0),
_queryCount(0),
_instanceID(0) {
insert(IdentityNS, BSON(HostField(hostAndPort)), 0);
setCommandReply("dbStats", BSON(HostField(hostAndPort)));
}
MockRemoteDBServer::~MockRemoteDBServer() {}
void MockRemoteDBServer::setDelay(long long milliSec) {
scoped_spinlock sLock(_lock);
_delayMilliSec = milliSec;
}
void MockRemoteDBServer::shutdown() {
scoped_spinlock sLock(_lock);
_isRunning = false;
}
void MockRemoteDBServer::reboot() {
scoped_spinlock sLock(_lock);
_isRunning = true;
_instanceID++;
}
MockRemoteDBServer::InstanceID MockRemoteDBServer::getInstanceID() const {
scoped_spinlock sLock(_lock);
return _instanceID;
}
bool MockRemoteDBServer::isRunning() const {
scoped_spinlock sLock(_lock);
return _isRunning;
}
void MockRemoteDBServer::setCommandReply(const string& cmdName, const mongo::BSONObj& replyObj) {
vector<BSONObj> replySequence;
replySequence.push_back(replyObj);
setCommandReply(cmdName, replySequence);
}
void MockRemoteDBServer::setCommandReply(const string& cmdName,
const vector<BSONObj>& replySequence) {
scoped_spinlock sLock(_lock);
_cmdMap[cmdName].reset(new CircularBSONIterator(replySequence));
}
void MockRemoteDBServer::insert(const string& ns, BSONObj obj, int flags) {
scoped_spinlock sLock(_lock);
vector<BSONObj>& mockCollection = _dataMgr[ns];
mockCollection.push_back(obj.copy());
}
void MockRemoteDBServer::remove(const string& ns, Query query, int flags) {
scoped_spinlock sLock(_lock);
if (_dataMgr.count(ns) == 0) {
return;
}
_dataMgr.erase(ns);
}
rpc::UniqueReply MockRemoteDBServer::runCommandWithMetadata(MockRemoteDBServer::InstanceID id,
StringData database,
StringData commandName,
const BSONObj& metadata,
const BSONObj& commandArgs) {
checkIfUp(id);
std::string cmdName = commandName.toString();
BSONObj reply;
{
scoped_spinlock lk(_lock);
uassert(ErrorCodes::IllegalOperation,
str::stream() << "no reply for command: " << commandName,
_cmdMap.count(cmdName));
reply = _cmdMap[cmdName]->next();
}
if (_delayMilliSec > 0) {
mongo::sleepmillis(_delayMilliSec);
}
checkIfUp(id);
{
scoped_spinlock lk(_lock);
_cmdCount++;
}
// We need to construct a reply message - it will always be read through a view so it
// doesn't matter whether we use CommandReplBuilder or LegacyReplyBuilder
auto message = rpc::CommandReplyBuilder{}
.setMetadata(rpc::makeEmptyMetadata())
.setCommandReply(reply)
.done();
auto replyView = stdx::make_unique<rpc::CommandReply>(&message);
return rpc::UniqueReply(std::move(message), std::move(replyView));
}
bool MockRemoteDBServer::runCommand(MockRemoteDBServer::InstanceID id,
const string& dbname,
const BSONObj& cmdObj,
BSONObj& info,
int options) {
BSONObj upconvertedRequest;
BSONObj upconvertedMetadata;
std::tie(upconvertedRequest, upconvertedMetadata) =
uassertStatusOK(rpc::upconvertRequestMetadata(cmdObj, options));
StringData commandName = upconvertedRequest.firstElementFieldName();
auto res =
runCommandWithMetadata(id, dbname, commandName, upconvertedMetadata, upconvertedRequest);
info = res->getCommandReply().getOwned();
return info["ok"].trueValue();
}
mongo::BSONArray MockRemoteDBServer::query(MockRemoteDBServer::InstanceID id,
const string& ns,
mongo::Query query,
int nToReturn,
int nToSkip,
const BSONObj* fieldsToReturn,
int queryOptions,
int batchSize) {
checkIfUp(id);
if (_delayMilliSec > 0) {
mongo::sleepmillis(_delayMilliSec);
}
checkIfUp(id);
scoped_spinlock sLock(_lock);
_queryCount++;
const vector<BSONObj>& coll = _dataMgr[ns];
BSONArrayBuilder result;
for (vector<BSONObj>::const_iterator iter = coll.begin(); iter != coll.end(); ++iter) {
result.append(iter->copy());
}
return BSONArray(result.obj());
}
mongo::ConnectionString::ConnectionType MockRemoteDBServer::type() const {
return mongo::ConnectionString::CUSTOM;
}
size_t MockRemoteDBServer::getCmdCount() const {
scoped_spinlock sLock(_lock);
return _cmdCount;
}
size_t MockRemoteDBServer::getQueryCount() const {
scoped_spinlock sLock(_lock);
return _queryCount;
}
void MockRemoteDBServer::clearCounters() {
scoped_spinlock sLock(_lock);
_cmdCount = 0;
_queryCount = 0;
}
string MockRemoteDBServer::getServerAddress() const {
return _hostAndPort;
}
string MockRemoteDBServer::toString() {
return _hostAndPort;
}
void MockRemoteDBServer::checkIfUp(InstanceID id) const {
scoped_spinlock sLock(_lock);
if (!_isRunning || id < _instanceID) {
throw mongo::SocketException(mongo::SocketException::CLOSED, _hostAndPort);
}
}
}
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