C language log base zlog basic use

1、zlog The download 、 Compilation and installation

git clone https://github.com/HardySimpson/zlog.git 

vim src/makefile

Set the installation path PREFIX

Set up tool chain CC

Compilation problems ：

relocation R_X86_64_PC32 against symbol `zlog_conf_del'......recompile with –fPIC

resolvent ：REAL_CFLAGS Before adding CFLAGS += -fPIC

make

make install

2、 User manual

http://hardysimpson.github.io/zlog/UsersGuide-CN.html

3、 Reference configuration

[global]
strict init = true
reload conf period = 0

buffer min = 1024
buffer max = 2MB

rotate lock file = self
default format = "%d(%F %T.%l) %-6V (%c:%F:%L) - %m%n"

file perms = 666
fsync period = 1K

[levels]
#TRACE = 10
#CRIT = 130, LOG_CRIT

[formats]
simple = "%m%n"
normal = "%d [%V] [%U:%L] %m%n"

[rules]
test.*			>stdout; normal
test_log.*		"./test.log", 1KB*4 ~ "./test-%d(%Y%m%d).#2s.log"; normal

4、 Reference resources demo

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "zlog.h"

int main(int argc, const char *argv[])
{
	int rc;
	zlog_category_t *c;
	rc = zlog_init("./zlog.conf");// initialization 
	if (rc) 
	{ 
		printf("init failed\n");
		return -1; 
	}
	c = zlog_get_category("test_log");// obtain test_log Classification and corresponding rules 
	if (!c) 
	{
		printf("zlog_get_category failed\n"); 
		zlog_fini();
		return -2; 
	}
	
	int i = 7;
	zlog_info(c, "abcdecghilklmnopqrstuvwxyz:%d", i);// Write the log 
	zlog_fini();// clear 
	return 0; 	
}

5、 explain

[rules]

test_log.DEBUG    "./test.log", 1KB*4 ~ "./test-%d(%Y%m%d).#2s.log"; normal

test_log： classification

DEBUG： The log level

"./test.log", 1KB*4 ~ "./test-%d(%Y%m%d).#2s.log"; normal： Specific rules

"./test.log"： Log save path

1KB： Size of each log file

4： Save at most 4 Log files

"./test-%d(%Y%m%d).#2s.log"： File transfer settings （ When the log file is full 1KB File transfer and save when ）

normal： Set the log output format