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/**
* Copyright (C) 2008-2014 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kDefault;
#include "mongo/platform/basic.h"
#include <fstream>
#include <iomanip>
#include <sstream>
#include "mongo/db/diag_log.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/log.h"
namespace mongo {
using std::hex;
using std::ios;
using std::ofstream;
using std::string;
using std::stringstream;
DiagLog::DiagLog() : f(0), level(0) {}
void DiagLog::openFile() {
verify(f == 0);
stringstream ss;
ss << storageGlobalParams.dbpath << "/diaglog." << hex << time(0);
string name = ss.str();
f = new ofstream(name.c_str(), ios::out | ios::binary);
if (!f->good()) {
str::stream msg;
msg << "diagLogging couldn't open " << name;
log() << msg.ss.str();
uasserted(ErrorCodes::FileStreamFailed, msg.ss.str());
} else {
log() << "diagLogging using file " << name;
}
}
int DiagLog::setLevel(int newLevel) {
stdx::lock_guard<stdx::mutex> lk(mutex);
int old = level;
log() << "diagLogging level=" << newLevel;
if (f == 0) {
openFile();
}
level = newLevel; // must be done AFTER f is set
return old;
}
void DiagLog::flush() {
if (level) {
log() << "flushing diag log";
stdx::lock_guard<stdx::mutex> lk(mutex);
f->flush();
}
}
void DiagLog::writeop(char* data, int len) {
if (level & 1) {
stdx::lock_guard<stdx::mutex> lk(mutex);
f->write(data, len);
}
}
void DiagLog::readop(char* data, int len) {
if (level & 2) {
bool log = (level & 4) == 0;
OCCASIONALLY log = true;
if (log) {
stdx::lock_guard<stdx::mutex> lk(mutex);
verify(f);
f->write(data, len);
}
}
}
DiagLog _diaglog;
} // namespace mongo
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