Logger management (#12)

* Enable logger common module

* Test Logging code added and enabled all logs by default

* Changed logging mechanism

Co-authored-by: jar3m <[email protected]>

Author: rama2092

common/inc/logger.h

@@ -1,2 +1,24 @@
+#ifndef _LOGGER_H
+#define _LOGGER_H
+
+#define __LOG_ERROR__		0
+#define __LOG_WARN__		1
+#define __LOG_INFO__		2
+#define __LOG_DEBUG__		3
+#define __LOG_TRACE__		4
+
+#define MAX_LOG_LEVELS	5
+#define MAX_MODULES			4
+#define	COMMON_MODULE		1
+
+#define LOG_ERROR(mod,fmt, args...)			app_log(mod, __LOG_ERROR__, NULL, fmt, ##args)
+#define LOG_WARN(mod, fmt, args...)			app_log(mod, __LOG_WARN__, NULL, fmt, ##args)
+#define LOG_INFO(mod, fmt, args...)			app_log(mod, __LOG_INFO__, NULL, fmt, ##args)
+#define LOG_DEBUG(mod, fmt, args...)			app_log(mod, __LOG_DEBUG__, NULL, fmt, ##args)
+#define LOG_TRACE_IN(mod, fmt, args...)		app_log(mod, __LOG_TRACE__, NULL, "[++%s:%4d]" fmt"\n", __func__, __LINE__, ##args)
+#define LOG_TRACE_OUT(mod, fmt, args...)		app_log(mod, __LOG_TRACE__, NULL, "[--%s:%4d]" fmt"\n", __func__, __LINE__, ##args)
 
 void logger_init();
+int app_log(char *module, int level, char *prefix, const char *format, ...);
+
+#endif // End of _LOGGER_H

common/inc/os.h

@@ -1,7 +1,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <stdbool.h>
+#include <stdarg.h>
 #include <string.h>
 #include <assert.h>
 #include <pthread.h>
 #include <signal.h>
+#include <sys/time.h>

common/src/logger.c

@@ -1,6 +1,69 @@
 #include "common.h"
+#include "logger.h"
+
+//Array to maintain current log levels to be used
+static bool log_level[MAX_LOG_LEVELS] = {false};
+static bool module_logs[MAX_MODULES] = {false};
 
 void logger_init()
 {
+	int i;
+	
+	for (i = 0; i < MAX_LOG_LEVELS; i++) {
+		log_level[i] = true;
+	}
+
 	printf("Logger init\n");
+
+}
+
+int app_log(char *module, int level, char *prefix, const char *format, ...)
+{
+	int len = 0;
+	va_list args;
+
+	va_start(args, format);
+
+	if (level < MAX_LOG_LEVELS && log_level[level] == true) {
+		char time_buff[64];
+		int millisec;
+		struct timeval tv;
+		time_t now = time(0);
+
+		gettimeofday(&tv, NULL);
+		millisec = (tv.tv_usec/1000);
+		strftime(time_buff, 64, "%H:%M:%S", localtime(&now));
+		printf("%s.%03d ", time_buff, millisec);
+		switch (level) {
+			case __LOG_ERROR__:
+				printf("[ERR");
+				break;
+			case __LOG_WARN__:
+				printf("[WRN");
+				break;
+			case __LOG_INFO__:
+				printf("[INF");
+				break;
+			case __LOG_DEBUG__:
+				printf("[DBG");
+				break;
+			case __LOG_TRACE__:
+				printf("[TRC");
+				break;
+			default:
+				printf("[UDF");
+				break;
+		}
+
+		printf(":%s] ",module);
+
+		if (prefix != NULL) {
+			printf("{%s} ", prefix);
+		}
+		len = vprintf(format, args);
+	}
+
+	va_end(args);
+
+	return len;
 }

test/src/test.c

@@ -2,9 +2,15 @@
 
 int main(int argc, char *argv[])
 {
-	printf("Hello World\n");
-
 	logger_init();
+
+	LOG_ERROR("COMMON", "Hello World\n");
+	LOG_WARN("COMMON", "Hello World\n");		
+	LOG_INFO("COMMON", "Hello World\n");		
+	LOG_DEBUG("COMMON", "Hello World\n");		
+	LOG_TRACE_IN("COMMON", "Hello World\n");
+	LOG_TRACE_OUT("COMMON", "Hello World\n");
+
 	fault_manager_init(NULL);
 
 	return 0;