Logger: Use libosmocore logging system

We still need an intermediate class Logger due to osmo-trx being
multi-threaded and requiring to have a lock to use libosmocore, which is
not thread safe.

Change-Id: I30baac89f53e927f8699d0586b43cccf88ecd493

3 files changed, 29 insertions, 112 deletions

diff --git a/CommonLibs/Logger.cpp b/CommonLibs/Logger.cpp
index 4c2a2d3..ac3de42 100644
--- a/CommonLibs/Logger.cpp
+++ b/CommonLibs/Logger.cpp
@@ -1,7 +1,5 @@
 /*
-* Copyright 2009, 2010 Free Software Foundation, Inc.
-* Copyright 2010 Kestrel Signal Processing, Inc.
-* Copyright 2011, 2012 Range Networks, Inc.
+* Copyright (C) 2018 sysmocom - s.f.m.c. GmbH
 *
 *
 * This software is distributed under the terms of the GNU Affero Public License.
@@ -39,55 +37,6 @@ using namespace std;
 
 Mutex gLogToLock;
 
-// Global log level threshold:
-int config_log_level;
-
-/** Names of the logging levels. */
-const char *levelNames[] = {
-	"EMERG", "ALERT", "CRIT", "ERR", "WARNING", "NOTICE", "INFO", "DEBUG"
-};
-int numLevels = 8;
-
-
-int levelStringToInt(const string& name)
-{
-	// Reverse search, since the numerically larger levels are more common.
-	for (int i=numLevels-1; i>=0; i--) {
-		if (name == levelNames[i]) return i;
-	}
-
-	// Common substitutions.
-	if (name=="INFORMATION") return 6;
-	if (name=="WARN") return 4;
-	if (name=="ERROR") return 3;
-	if (name=="CRITICAL") return 2;
-	if (name=="EMERGENCY") return 0;
-
-	// Unknown level.
-	return -1;
-}
-
-static std::string format(const char *fmt, ...)
-{
-	va_list ap;
-	char buf[300];
-	va_start(ap,fmt);
-	int n = vsnprintf(buf,300,fmt,ap);
-	va_end(ap);
-	if (n >= (300-4)) { strcpy(&buf[(300-4)],"..."); }
-	return std::string(buf);
-}
-
-const std::string timestr()
-{
-	struct timeval tv;
-	struct tm tm;
-	gettimeofday(&tv,NULL);
-	localtime_r(&tv.tv_sec,&tm);
-	unsigned tenths = tv.tv_usec / 100000;	// Rounding down is ok.
-	return format(" %02d:%02d:%02d.%1d",tm.tm_hour,tm.tm_min,tm.tm_sec,tenths);
-}
-
 std::ostream& operator<<(std::ostream& os, std::ostringstream& ss)
 {
 	return os << ss.str();
@@ -95,34 +44,18 @@ std::ostream& operator<<(std::ostream& os, std::ostringstream& ss)
 
 Log::~Log()
 {
-	// Anything at or above LOG_CRIT is an "alarm".
-	if (mPriority <= LOG_ERR) {
-		cerr << mStream.str() << endl;
-	}
-
 	int mlen = mStream.str().size();
 	int neednl = (mlen==0 || mStream.str()[mlen-1] != '\n');
+	const char *fmt = neednl ? "%s\n" : "%s";
 	ScopedLock lock(gLogToLock);
 	// The COUT() macro prevents messages from stomping each other but adds uninteresting thread numbers,
 	// so just use std::cout.
-	std::cout << mStream.str();
-	if (neednl) std::cout<<"\n";
+	LOGP(mCategory, mPriority, fmt, mStream.str().c_str());
 }
 
 ostringstream& Log::get()
 {
-	assert(mPriority<numLevels);
-	mStream << levelNames[mPriority] <<  ' ';
 	return mStream;
 }
 
-
-
-void gLogInit(const char* level, char *fn)
-{
-	// Set the level if one has been specified.
-	if (level)
-		config_log_level = levelStringToInt(level);
-}
-
 // vim: ts=4 sw=4
diff --git a/CommonLibs/Logger.h b/CommonLibs/Logger.h
index a8fe44d..00efcd7 100644
--- a/CommonLibs/Logger.h
+++ b/CommonLibs/Logger.h
@@ -23,12 +23,6 @@
 
 */
 
-// (pat) WARNING is stupidly defined in /usr/local/include/osipparser2/osip_const.h.
-// This must be outside the #ifndef LOGGER_H to fix it as long as Logger.h included after the above file.
-#ifdef WARNING
-#undef WARNING
-#endif
-
 #ifndef LOGGER_H
 #define LOGGER_H
 
@@ -37,31 +31,28 @@
 #include <sstream>
 #include <string>
 
-extern int config_log_level;
-
-#define LOG_EMERG       0       /* system is unusable */
-#define LOG_ALERT       1       /* action must be taken immediately */
-#define LOG_CRIT        2       /* critical conditions */
-#define LOG_ERR         3       /* error conditions */
-#define LOG_WARNING     4       /* warning conditions */
-#define LOG_NOTICE      5       /* normal but significant condition */
-#define LOG_INFO        6       /* informational */
-#define LOG_DEBUG       7       /* debug-level messages */
-
-#define _LOG(level) \
-	Log(LOG_##level).get() << pthread_self() \
-	<< timestr() << " " __FILE__  ":"  << __LINE__ << ":" << __FUNCTION__ << ": "
-
-#define IS_LOG_LEVEL(wLevel) (config_log_level>=LOG_##wLevel)
-
-#ifdef NDEBUG
-#define LOG(wLevel) \
-	if (LOG_##wLevel!=LOG_DEBUG && IS_LOG_LEVEL(wLevel)) _LOG(wLevel)
-#else
-#define LOG(wLevel) \
-	if (IS_LOG_LEVEL(wLevel)) _LOG(wLevel)
+extern "C" {
+#include <osmocom/core/logging.h>
+#include "debug.h"
+}
+
+/* Translation for old log statements */
+#ifndef LOGL_ALERT
+#define LOGL_ALERT LOGL_FATAL
+#endif
+#ifndef LOGL_ERR
+#define LOGL_ERR LOGL_ERROR
+#endif
+#ifndef LOGL_WARNING
+#define LOGL_WARNING LOGL_NOTICE
 #endif
 
+#define LOG(level) \
+	Log(DMAIN, LOGL_##level).get() <<  "[tid=" << pthread_self() << "] "
+
+#define LOGC(category, level) \
+	Log(category, LOGL_##level).get() <<  "[tid=" << pthread_self() << "] "
+
 /**
 	A C++ stream-based thread-safe logger.
 	This object is NOT the global logger;
@@ -73,13 +64,14 @@ class Log {
 
 	protected:
 
-	std::ostringstream mStream;		///< This is where we buffer up the log entry.
-	int mPriority;					///< Priority of current report.
+	std::ostringstream mStream;	///< This is where we buffer up the log entry.
+	int mCategory;			///< Priority of current report.
+	int mPriority;			///< Category of current report.
 
 	public:
 
-	Log(int wPriority)
-		:mPriority(wPriority)
+	Log(int wCategory, int wPriority)
+		: mCategory(wCategory), mPriority(wPriority)
 	{ }
 
 	// Most of the work is in the destructor.
@@ -89,16 +81,8 @@ class Log {
 	std::ostringstream& get();
 };
 
-const std::string timestr();		// A timestamp to print in messages.
 std::ostream& operator<<(std::ostream& os, std::ostringstream& ss);
 
-/**@ Global control and initialization of the logging system. */
-//@{
-/** Initialize the global logging system. */
-void gLogInit(const char* level=NULL, char* fn=NULL);
-//@}
-
-
 #endif
 
 // vim: ts=4 sw=4
diff --git a/CommonLibs/Makefile.am b/CommonLibs/Makefile.am
index 843bc38..5d116f9 100644
--- a/CommonLibs/Makefile.am
+++ b/CommonLibs/Makefile.am
@@ -22,7 +22,7 @@
 include $(top_srcdir)/Makefile.common
 
 AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES)
-AM_CXXFLAGS = -Wall -O3 -g -lpthread
+AM_CXXFLAGS = -Wall -O3 -g -lpthread $(LIBOSMOCORE_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(LIBOSMOVTY_CFLAGS)
 AM_CFLAGS = $(LIBOSMOCORE_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(LIBOSMOVTY_CFLAGS)
 
 EXTRA_DIST = \