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Code Issues Releases Activity

log_rotation_age works

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This commit is contained in:
Arthur Zakirov 2017-05-17 18:00:39 +03:00
parent e56ae3007e
commit c2e87828e1
1 changed files with 77 additions and 30 deletions
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107
utils/logger.c
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@ -15,6 +15,7 @@
#include <time.h>
#include "logger.h"
#include "pgut.h"
/* Logger parameters */
@ -25,7 +26,9 @@ char *error_log_filename = NULL;
char *log_directory = NULL;
char log_path[MAXPGPATH] = "";
/* Maximum size of an individual log file in kilobytes */
int log_rotation_size = 0;
/* Maximum lifetime of an individual log file in minutes */
int log_rotation_age = 0;
/* Implementation for logging.h */
@ -102,7 +105,9 @@ elog_internal(int elevel, const char *fmt, va_list args)
{
bool wrote_to_file = false;
pthread_mutex_lock(&log_file_mutex);
/* There is no need to lock if this is elog() from upper elog() */
if (!logging_to_file)
pthread_mutex_lock(&log_file_mutex);
/*
* Write message to log file.
@ -161,7 +166,8 @@ elog_internal(int elevel, const char *fmt, va_list args)
fflush(stderr);
}
pthread_mutex_unlock(&log_file_mutex);
if (!logging_to_file)
pthread_mutex_unlock(&log_file_mutex);
/* Exit with code if it is an error */
if (elevel > WARNING)
@ -329,56 +335,82 @@ static void
open_logfile(FILE **file, const char *filename_format)
{
char *filename;
char control[MAXPGPATH];
struct stat st;
bool rotation_requested = false;
FILE *control_file;
time_t cur_time = time(NULL);
bool rotation_requested = false,
logfile_exists = false;
filename = logfile_getname(filename_format, time(NULL));
filename = logfile_getname(filename_format, cur_time);
/* "log_path" was checked in logfile_getname() */
snprintf(control, MAXPGPATH, "%s/log_rotation", log_path);
if (stat(filename, &st) == -1)
{
if (errno == ENOENT)
{
/* There is no file "filename" and rotation does not need */
goto logfile_open;
}
else
elog(ERROR, "cannot stat log file \"%s\": %s",
filename, strerror(errno));
}
/* Found log file "filename" */
logfile_exists = true;
/* First check for rotation */
if (log_rotation_size > 0 || log_rotation_age > 0)
{
if (stat(filename, &st) == -1)
{
if (errno == ENOENT)
{
/* There is no file "filename" and rotation does not need */
goto logfile_open;
}
else
elog(ERROR, "cannot stat log file \"%s\": %s",
filename, strerror(errno));
}
/* Found log file "filename" */
/* Check for rotation by age */
if (log_rotation_age > 0)
{
char control[MAXPGPATH];
struct stat control_st;
FILE *control_file;
snprintf(control, MAXPGPATH, "%s.rotation", filename);
if (stat(control, &control_st) == -1)
{
if (errno == ENOENT)
{
/* There is no control file for rotation */
goto logfile_open;
}
else
if (errno != ENOENT)
elog(ERROR, "cannot stat rotation file \"%s\": %s",
control, strerror(errno));
}
else
{
char buf[1024];
/* Found control file for rotation */
control_file = fopen(control, "r");
if (control_file == NULL)
elog(ERROR, "cannot open rotation file \"%s\": %s",
control, strerror(errno));
control_file = fopen(control, "r");
fclose(control_file);
if (fgets(buf, lengthof(buf), control_file))
{
time_t creation_time;
if (!parse_int64(buf, (int64 *) &creation_time))
elog(ERROR, "rotation file \"%s\" has wrong "
"creation timestamp \"%s\"",
control, buf);
/* Parsed creation time */
rotation_requested = (cur_time - creation_time) >
/* convert to seconds */
log_rotation_age * 60;
}
else
elog(ERROR, "cannot read creation timestamp from "
"rotation file \"%s\"", control);
fclose(control_file);
}
}
/* Check for rotation by size */
if (!rotation_requested && log_rotation_size > 0)
rotation_requested = (st.st_size >= log_rotation_size * 1024L);
rotation_requested = st.st_size >=
/* convert to bytes */
log_rotation_size * 1024L;
}
logfile_open:
@ -388,6 +420,21 @@ logfile_open:
*file = logfile_open(filename, "a");
pfree(filename);
/* Rewrite rotation control file */
if (rotation_requested || !logfile_exists)
{
time_t timestamp = time(NULL);
control_file = fopen(control, "w");
if (control_file == NULL)
elog(ERROR, "cannot open rotation file \"%s\": %s",
control, strerror(errno));
fprintf(control_file, "%ld", timestamp);
fclose(control_file);
}
/*
* Arrange to close opened file at proc_exit.
*/