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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "qpid/log/Logger.h"
#include "qpid/log/Options.h"
#include "qpid/log/SinkOptions.h"
#include "qpid/memory.h"
#include "qpid/sys/Thread.h"
#include "qpid/sys/Time.h"
#include "qpid/DisableExceptionLogging.h"
#if (BOOST_VERSION >= 104000)
#include <boost/serialization/singleton.hpp>
#else
#include <boost/pool/detail/singleton.hpp>
#endif
#include <boost/bind.hpp>
#include <boost/function.hpp>
#include <algorithm>
#include <sstream>
#include <iomanip>
#include <stdexcept>
#include <time.h>
namespace qpid {
namespace log {
using namespace std;
typedef sys::Mutex::ScopedLock ScopedLock;
inline void Logger::enable_unlocked(Statement* s) {
s->enabled=selector.isEnabled(s->level, s->function, s->category);
}
Logger& Logger::instance() {
#if (BOOST_VERSION >= 104000)
return boost::serialization::singleton<Logger>::get_mutable_instance();
#else
return boost::details::pool::singleton_default<Logger>::instance();
#endif
}
Logger::Logger() : flags(0) {
// Disable automatic logging in Exception constructors to avoid
// re-entrant use of logger singleton if there is an error in
// option parsing.
DisableExceptionLogging del;
// Initialize myself from env variables so all programs
// (e.g. tests) can use logging even if they don't parse
// command line args.
Options opts("");
opts.parse(0, 0);
configure(opts);
}
Logger::~Logger() {}
void Logger::select(const Selector& s) {
ScopedLock l(lock);
selector=s;
std::for_each(statements.begin(), statements.end(),
boost::bind(&Logger::enable_unlocked, this, _1));
}
Logger::Output::Output() {}
Logger::Output::~Output() {}
void Logger::log(const Statement& s, const std::string& msg) {
// Format the message outside the lock.
std::ostringstream os;
if (!prefix.empty())
os << prefix << ": ";
if (flags&TIME) {
if (flags&HIRES)
qpid::sys::outputHiresNow(os);
else
qpid::sys::outputFormattedNow(os);
}
if (flags&CATEGORY)
os << "[" << CategoryTraits::name(s.category) << "] ";
if (flags&LEVEL)
os << LevelTraits::name(s.level) << " ";
if (flags&THREAD)
os << "[0x" << hex << qpid::sys::Thread::logId() << "] ";
if (flags&FILE)
os << s.file << ":";
if (flags&LINE)
os << dec << s.line << ":";
if (flags&FUNCTION)
os << s.function << ":";
if (flags & (FILE|LINE|FUNCTION))
os << " ";
os << msg << endl;
std::string formatted=os.str();
{
ScopedLock l(lock);
std::for_each(outputs.begin(), outputs.end(),
boost::bind(&Output::log, _1, s, formatted));
}
}
void Logger::output(std::auto_ptr<Output> out) {
ScopedLock l(lock);
outputs.push_back(out.release());
}
void Logger::clear() {
select(Selector()); // locked
format(0); // locked
ScopedLock l(lock);
outputs.clear();
}
void Logger::format(int formatFlags) {
ScopedLock l(lock);
flags=formatFlags;
}
static int bitIf(bool test, int bit) {
return test ? bit : 0;
}
int Logger::format(const Options& opts) {
int flags=
bitIf(opts.level, LEVEL) |
bitIf(opts.time, TIME) |
bitIf(opts.source, (FILE|LINE)) |
bitIf(opts.function, FUNCTION) |
bitIf(opts.thread, THREAD) |
bitIf(opts.hiresTs, HIRES) |
bitIf(opts.category, CATEGORY);
format(flags);
return flags;
}
void Logger::add(Statement& s) {
ScopedLock l(lock);
enable_unlocked(&s);
statements.insert(&s);
}
void Logger::configure(const Options& opts) {
options = opts;
clear();
Options o(opts);
if (o.trace)
o.selectors.push_back("trace+");
format(o);
select(Selector(o));
setPrefix(opts.prefix);
options.sinkOptions->setup(this);
}
void Logger::reconfigure(const std::vector<std::string>& selectors) {
options.selectors = selectors;
select(Selector(options));
}
void Logger::setPrefix(const std::string& p) { prefix = p; }
bool Logger::getHiresTimestamp()
{
return flags & HIRES;
}
void Logger::setHiresTimestamp(bool setting)
{
ScopedLock l(lock);
if (setting)
flags |= HIRES;
else
flags &= ~HIRES;
}
}} // namespace qpid::log
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