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authorMatthias P. Braendli (think) <matthias@mpb.li>2012-08-15 16:32:54 +0200
committerMatthias P. Braendli (think) <matthias@mpb.li>2012-08-15 16:32:54 +0200
commit6603a0b62b22cefbc1ceed00739230e6ccc4a8d9 (patch)
treecf660eb14e53d1e5b67d7bb5c7f1336002a06e89 /src/Log.h
parentbb1fe8fe2ce76eda4c8e9fdfae3a0e409bad2840 (diff)
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crc-dabmod: added syslog support
Diffstat (limited to 'src/Log.h')
-rw-r--r--src/Log.h143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/Log.h b/src/Log.h
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+/*
+ Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+ Her Majesty the Queen in Right of Canada (Communications Research
+ Center Canada)
+
+ Includes modifications for which no copyright is claimed
+ 2012, Matthias P. Braendli, matthias.braendli@mpb.li
+ */
+/*
+ This file is part of CRC-DADMOD.
+
+ CRC-DADMOD is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ CRC-DADMOD 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with CRC-DADMOD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _LOG_H
+#define _LOG_H
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <string>
+#include <syslog.h>
+#include <iostream>
+#include <fstream>
+#include <list>
+#include <stdexcept>
+
+#include <stdarg.h>
+
+#include "porting.h"
+
+#define SYSLOG_IDENT "CRC-DABMOD"
+#define SYSLOG_FACILITY LOG_LOCAL0
+
+enum log_level_t {debug = 0, info, warn, error, alert, emerg};
+
+class LogBackend {
+ public:
+ virtual void log(log_level_t level, const char* fmt, ...) = 0;
+ virtual std::string get_name() = 0;
+};
+
+class LogToSyslog : public LogBackend {
+ public:
+ LogToSyslog() {
+ name = "SYSLOG";
+ openlog(SYSLOG_IDENT, LOG_PID, SYSLOG_FACILITY);
+ }
+
+ ~LogToSyslog() {
+ closelog();
+ }
+
+ void log(log_level_t level, const char* fmt, ...) {
+ va_list arg_ptr;
+
+ int syslog_level = LOG_EMERG;
+ switch (level) {
+ case debug: syslog_level = LOG_DEBUG; break;
+ case alert: syslog_level = LOG_ALERT; break;
+ case info: syslog_level = LOG_INFO; break;
+ case warn: syslog_level = LOG_WARNING; break;
+ case error: syslog_level = LOG_ERR; break;
+ case emerg: syslog_level = LOG_EMERG; break;
+ }
+
+ va_start(arg_ptr, fmt);
+ syslog(level, fmt, arg_ptr);
+ va_end(arg_ptr);
+ }
+
+ std::string get_name() { return name; };
+
+ private:
+ std::string name;
+};
+
+class LogToFile : public LogBackend {
+ public:
+ LogToFile(std::string filename) {
+ name = "FILE";
+ log_filename = filename;
+ log_stream.open(filename.c_str(), std::ios::app);
+ if (!log_stream.is_open()) {
+ throw new std::runtime_error("Cannot open log file !");
+ }
+ }
+
+ ~LogToFile() {
+ if (log_stream.is_open()) {
+ log_stream.close();
+ }
+ }
+
+ void log(log_level_t level, const char* fmt, ...) {
+ va_list arg_ptr;
+ char message[200];
+
+ const char* log_level_text[] = {"DEBUG", "INFO", "WARN", "ERROR", "ALERT", "EMERG"};
+
+ va_start(arg_ptr, fmt);
+ snprintf(message, 200, fmt, arg_ptr);
+ log_stream << "CRC-DABMOD: " << log_level_text[(size_t)level] << ": " << message << std::endl;
+ va_end(arg_ptr);
+ }
+
+ std::string get_name() { return name; };
+
+ private:
+ std::string name;
+ std::string log_filename;
+ std::ofstream log_stream;
+};
+
+class Logger {
+ public:
+ Logger();
+
+ void register_backend(LogBackend* backend);
+
+ void log(log_level_t level, std::string message) { operator()(level, "%s", message.c_str()); }
+ void log(log_level_t level, const char* fmt, ...);
+
+ void operator()(log_level_t level, const char* fmt, ...);
+
+ private:
+ std::list<LogBackend*> backends;
+};
+
+
+#endif