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// s/request.cpp
/**
* Copyright (C) 2008 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/s/request.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/lasterror.h"
#include "mongo/db/stats/counters.h"
#include "mongo/s/cluster_last_error_info.h"
#include "mongo/s/grid.h"
#include "mongo/s/strategy.h"
#include "mongo/util/log.h"
#include "mongo/util/timer.h"
namespace mongo {
using std::string;
Request::Request(Message& m, AbstractMessagingPort* p)
: _clientInfo(&cc()), _m(m), _d(m), _p(p), _id(_m.header().getId()), _didInit(false) {
ClusterLastErrorInfo::get(_clientInfo).newRequest();
}
void Request::init(OperationContext* txn) {
if (_didInit) {
return;
}
_m.header().setId(_id);
LastError::get(_clientInfo).startRequest();
ClusterLastErrorInfo::get(_clientInfo).clearRequestInfo();
if (_d.messageShouldHaveNs()) {
const NamespaceString nss(getns());
uassert(ErrorCodes::IllegalOperation,
"can't use 'local' database through mongos",
nss.db() != "local");
uassert(ErrorCodes::InvalidNamespace,
str::stream() << "Invalid ns [" << nss.ns() << "]",
nss.isValid());
}
AuthorizationSession::get(_clientInfo)->startRequest(txn);
_didInit = true;
}
void Request::process(OperationContext* txn, int attempt) {
init(txn);
int op = _m.operation();
verify(op > dbMsg);
const MSGID msgId = _m.header().getId();
LOG(3) << "Request::process begin ns: " << getnsIfPresent() << " msg id: " << msgId
<< " op: " << op << " attempt: " << attempt;
_d.markSet();
bool iscmd = false;
if (op == dbKillCursors) {
Strategy::killCursors(txn, *this);
globalOpCounters.gotOp(op, iscmd);
} else if (op == dbQuery) {
NamespaceString nss(getns());
iscmd = nss.isCommand() || nss.isSpecialCommand();
if (iscmd) {
int n = _d.getQueryNToReturn();
uassert(16978,
str::stream() << "bad numberToReturn (" << n
<< ") for $cmd type ns - can only be 1 or -1",
n == 1 || n == -1);
Strategy::clientCommandOp(txn, *this);
} else {
Strategy::queryOp(txn, *this);
}
} else if (op == dbGetMore) {
Strategy::getMore(txn, *this);
globalOpCounters.gotOp(op, iscmd);
} else {
Strategy::writeOp(txn, op, *this);
// globalOpCounters are handled by write commands.
}
LOG(3) << "Request::process end ns: " << getnsIfPresent() << " msg id: " << msgId
<< " op: " << op << " attempt: " << attempt;
}
} // namespace mongo
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