rstudio/src/cpp/core/SyslogLogWriter.cpp at master · andschar/rstudio · GitHub

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* SyslogLogWriter.cpp

* Unless you have received this program directly from RStudio pursuant

* to the terms of a commercial license agreement with RStudio, then

* this program is licensed to you under the terms of version 3 of the

* GNU Affero General Public License. This program is distributed WITHOUT

* ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,

* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the

* AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.

#include <core/SyslogLogWriter.hpp>

#include <syslog.h>

#include <iostream>

#include <boost/algorithm/string.hpp>

#include <core/system/System.hpp>

namespace {

int logPriority(int logLevel)

{

using namespace rstudio::core::system;

// map universal log entry type to posix constant

switch(logLevel)

{

case kLogLevelError:

return LOG_ERR;

case kLogLevelWarning:

return LOG_WARNING ;

case kLogLevelInfo:

return LOG_INFO ;

case kLogLevelDebug:

return LOG_DEBUG ;

default:

return LOG_WARNING;

}

} // anonymous namespace

namespace rstudio {

namespace core {

SyslogLogWriter::~SyslogLogWriter()

{

try

{

::closelog();

}

catch(...)

{

}

SyslogLogWriter::SyslogLogWriter(const std::string& programIdentity,

int logLevel)

: programIdentity_(programIdentity),

logToStderr_(core::system::stderrIsTerminal())

{

// copy program identity into new string whose buffer will stay

// around long enough to successfully register with openlog

// (passing the c_str of programIdentity wasn't working on OSX)

std::string* pProgramIdentity = new std::string(programIdentity);

// initialize log options

int logOptions = LOG_CONS | LOG_PID ;

// open log

::openlog(pProgramIdentity->c_str(), logOptions, LOG_USER);

::setlogmask(LOG_UPTO(logPriority(logLevel)));

}

void SyslogLogWriter::log(core::system::LogLevel logLevel,

const std::string& message)

{

if (logToStderr_)

std::cerr << formatLogEntry(programIdentity_, message, false);

// unix system log entries are delimited by newlines so we replace

// them with an alternate delimiter

std::string cleanedMessage(message);

boost::algorithm::replace_all(cleanedMessage, "\n", "|||");

// log to the sys-log, to display in real-time use e.g

// tail --follow --lines=0 /var/log/user.log

::syslog(logPriority(logLevel), "%s", cleanedMessage.c_str()) ;

}

void SyslogLogWriter::log(const std::string&,

core::system::LogLevel logLevel,

const std::string& message)

{

log(logLevel, message);

}

} // namespace core

} // namespace rstudio

rstudio/src/cpp/core/SyslogLogWriter.cpp at master · andschar/rstudio · GitHub

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