#include "common.h"
const char *program_name = "";
-unsigned long long debug_flags = DEBUG;
+uint64_t debug_flags = DEBUG;
int access_log_syslog = 1;
int error_log_syslog = 1;
-int output_log_syslog = 1; // debug log
+int output_log_syslog = 1; // debug log
int stdaccess_fd = -1;
FILE *stdaccess = NULL;
}
int open_log_file(int fd, FILE **fp, const char *filename, int *enabled_syslog) {
- int f, t;
+ int f;
if(!filename || !*filename || !strcmp(filename, "none"))
filename = "/dev/null";
// don't do anything if the user is willing
// to have the standard one
- if(!strcmp(filename, "system"))
- return fd;
+ if(!strcmp(filename, "system")) {
+ if(fd != -1) return fd;
+ filename = "stdout";
+ }
if(!strcmp(filename, "stdout"))
f = STDOUT_FILENO;
if(fd != f && fd != -1) {
// it automatically closes
- t = dup2(f, fd);
+ int t = dup2(f, fd);
if (t == -1) {
error("Cannot dup2() new fd %d to old fd %d for '%s'", f, fd, filename);
close(f);
}
else fd = f;
- if(fp && *fp == NULL) {
- // info("fdopen(%d) on filename '%s'", fd, filename);
-
- FILE *n = fdopen(fd, "a");
- if (!n)
+ if(fp && !*fp) {
+ *fp = fdopen(fd, "a");
+ if (!*fp)
error("Cannot fdopen() fd %d ('%s')", fd, filename);
-
else {
- if (setvbuf(n, NULL, _IOLBF, 0) != 0)
+ if (setvbuf(*fp, NULL, _IOLBF, 0) != 0)
error("Cannot set line buffering on fd %d ('%s')", fd, filename);
-
- if(!*fp)
- *fp = n;
- else {
- FILE *o = *fp;
- *fp = n;
- fclose(o);
- }
}
}
void reopen_all_log_files() {
if(stdout_filename)
- open_log_file(STDOUT_FILENO, &stdout, stdout_filename, &output_log_syslog);
+ open_log_file(STDOUT_FILENO, (FILE **)&stdout, stdout_filename, &output_log_syslog);
if(stderr_filename)
- open_log_file(STDERR_FILENO, &stderr, stderr_filename, &error_log_syslog);
+ open_log_file(STDERR_FILENO, (FILE **)&stderr, stderr_filename, &error_log_syslog);
if(stdaccess_filename)
- stdaccess_fd = open_log_file(stdaccess_fd, &stdaccess, stdaccess_filename, &access_log_syslog);
+ stdaccess_fd = open_log_file(stdaccess_fd, (FILE **)&stdaccess, stdaccess_filename, &access_log_syslog);
}
void open_all_log_files() {
// disable stdin
- open_log_file(STDIN_FILENO, &stdin, "/dev/null", NULL);
+ open_log_file(STDIN_FILENO, (FILE **)&stdin, "/dev/null", NULL);
- open_log_file(STDOUT_FILENO, &stdout, stdout_filename, &output_log_syslog);
- open_log_file(STDERR_FILENO, &stderr, stderr_filename, &error_log_syslog);
- stdaccess_fd = open_log_file(stdaccess_fd, &stdaccess, stdaccess_filename, &access_log_syslog);
+ open_log_file(STDOUT_FILENO, (FILE **)&stdout, stdout_filename, &output_log_syslog);
+ open_log_file(STDERR_FILENO, (FILE **)&stderr, stderr_filename, &error_log_syslog);
+ stdaccess_fd = open_log_file(stdaccess_fd, (FILE **)&stdaccess, stdaccess_filename, &access_log_syslog);
}
// ----------------------------------------------------------------------------
// error log throttling
+time_t error_log_throttle_period_backup = 0;
time_t error_log_throttle_period = 1200;
unsigned long error_log_errors_per_period = 200;
int error_log_limit(int reset) {
- static time_t start = 0;
- static unsigned long counter = 0, prevented = 0;
-
- // do not throttle if the period is 0
- if(error_log_throttle_period == 0)
- return 0;
-
- // prevent all logs if the errors per period is 0
- if(error_log_errors_per_period == 0)
- return 1;
-
- time_t now = time(NULL);
- if(!start) start = now;
-
- if(reset) {
- if(prevented) {
- log_date(stderr);
- fprintf(stderr, "%s: Resetting logging for process '%s' (prevented %lu logs in the last %ld seconds).\n"
- , program_name
- , program_name
- , prevented
- , now - start
- );
- }
-
- start = now;
- counter = 0;
- prevented = 0;
- }
-
- // detect if we log too much
- counter++;
-
- if(now - start > error_log_throttle_period) {
- if(prevented) {
- log_date(stderr);
- fprintf(stderr, "%s: Resuming logging from process '%s' (prevented %lu logs in the last %ld seconds).\n"
- , program_name
- , program_name
- , prevented
- , error_log_throttle_period
- );
- }
-
- // restart the period accounting
- start = now;
- counter = 1;
- prevented = 0;
-
- // log this error
- return 0;
- }
-
- if(counter > error_log_errors_per_period) {
- if(!prevented) {
- log_date(stderr);
- fprintf(stderr, "%s: Too many logs (%lu logs in %ld seconds, threshold is set to %lu logs in %ld seconds). Preventing more logs from process '%s' for %ld seconds.\n"
- , program_name
- , counter
- , now - start
- , error_log_errors_per_period
- , error_log_throttle_period
- , program_name
- , start + error_log_throttle_period - now);
- }
-
- prevented++;
-
- // prevent logging this error
- return 1;
- }
-
- return 0;
+ static time_t start = 0;
+ static unsigned long counter = 0, prevented = 0;
+
+ // do not throttle if the period is 0
+ if(error_log_throttle_period == 0)
+ return 0;
+
+ // prevent all logs if the errors per period is 0
+ if(error_log_errors_per_period == 0)
+#ifdef NETDATA_INTERNAL_CHECKS
+ return 0;
+#else
+ return 1;
+#endif
+
+ time_t now = now_monotonic_sec();
+ if(!start) start = now;
+
+ if(reset) {
+ if(prevented) {
+ log_date(stderr);
+ fprintf(stderr, "%s: Resetting logging for process '%s' (prevented %lu logs in the last %ld seconds).\n"
+ , program_name
+ , program_name
+ , prevented
+ , now - start
+ );
+ }
+
+ start = now;
+ counter = 0;
+ prevented = 0;
+ }
+
+ // detect if we log too much
+ counter++;
+
+ if(now - start > error_log_throttle_period) {
+ if(prevented) {
+ log_date(stderr);
+ fprintf(stderr, "%s: Resuming logging from process '%s' (prevented %lu logs in the last %ld seconds).\n"
+ , program_name
+ , program_name
+ , prevented
+ , error_log_throttle_period
+ );
+ }
+
+ // restart the period accounting
+ start = now;
+ counter = 1;
+ prevented = 0;
+
+ // log this error
+ return 0;
+ }
+
+ if(counter > error_log_errors_per_period) {
+ if(!prevented) {
+ log_date(stderr);
+ fprintf(stderr, "%s: Too many logs (%lu logs in %ld seconds, threshold is set to %lu logs in %ld seconds). Preventing more logs from process '%s' for %ld seconds.\n"
+ , program_name
+ , counter
+ , now - start
+ , error_log_errors_per_period
+ , error_log_throttle_period
+ , program_name
+ , start + error_log_throttle_period - now);
+ }
+
+ prevented++;
+
+ // prevent logging this error
+#ifdef NETDATA_INTERNAL_CHECKS
+ return 0;
+#else
+ return 1;
+#endif
+ }
+
+ return 0;
}
// ----------------------------------------------------------------------------
void log_date(FILE *out)
{
- char outstr[24];
- time_t t;
- struct tm *tmp, tmbuf;
+ char outstr[26];
+ time_t t;
+ struct tm *tmp, tmbuf;
- t = time(NULL);
- tmp = localtime_r(&t, &tmbuf);
+ t = now_realtime_sec();
+ tmp = localtime_r(&t, &tmbuf);
- if (tmp == NULL) return;
- if (unlikely(strftime(outstr, sizeof(outstr), "%y-%m-%d %H:%M:%S", tmp) == 0)) return;
+ if (tmp == NULL) return;
+ if (unlikely(strftime(outstr, sizeof(outstr), "%Y-%m-%d %H:%M:%S", tmp) == 0)) return;
- fprintf(out, "%s: ", outstr);
+ fprintf(out, "%s: ", outstr);
}
// ----------------------------------------------------------------------------
void debug_int( const char *file, const char *function, const unsigned long line, const char *fmt, ... )
{
- va_list args;
-
- log_date(stdout);
- va_start( args, fmt );
- printf("DEBUG (%04lu@%-10.10s:%-15.15s): %s: ", line, file, function, program_name);
- vprintf(fmt, args);
- va_end( args );
- putchar('\n');
-
- if(output_log_syslog) {
- va_start( args, fmt );
- vsyslog(LOG_ERR, fmt, args );
- va_end( args );
- }
-
- fflush(stdout);
+ va_list args;
+
+ log_date(stdout);
+ va_start( args, fmt );
+ printf("%s: DEBUG (%04lu@%-10.10s:%-15.15s): ", program_name, line, file, function);
+ vprintf(fmt, args);
+ va_end( args );
+ putchar('\n');
+
+ if(output_log_syslog) {
+ va_start( args, fmt );
+ vsyslog(LOG_ERR, fmt, args );
+ va_end( args );
+ }
+
+ fflush(stdout);
}
// ----------------------------------------------------------------------------
void info_int( const char *file, const char *function, const unsigned long line, const char *fmt, ... )
{
- va_list args;
+ va_list args;
- // prevent logging too much
- if(error_log_limit(0)) return;
+ // prevent logging too much
+ if(error_log_limit(0)) return;
- log_date(stderr);
+ log_date(stderr);
- va_start( args, fmt );
- if(debug_flags) fprintf(stderr, "INFO (%04lu@%-10.10s:%-15.15s): %s: ", line, file, function, program_name);
- else fprintf(stderr, "INFO: %s: ", program_name);
- vfprintf( stderr, fmt, args );
- va_end( args );
+ va_start( args, fmt );
+ if(debug_flags) fprintf(stderr, "%s: INFO : (%04lu@%-10.10s:%-15.15s): ", program_name, line, file, function);
+ else fprintf(stderr, "%s: INFO : ", program_name);
+ vfprintf( stderr, fmt, args );
+ va_end( args );
- fputc('\n', stderr);
+ fputc('\n', stderr);
- if(error_log_syslog) {
- va_start( args, fmt );
- vsyslog(LOG_INFO, fmt, args );
- va_end( args );
- }
+ if(error_log_syslog) {
+ va_start( args, fmt );
+ vsyslog(LOG_INFO, fmt, args );
+ va_end( args );
+ }
}
// ----------------------------------------------------------------------------
// error log
+#if defined(STRERROR_R_CHAR_P)
+// GLIBC version of strerror_r
+static const char *strerror_result(const char *a, const char *b) { (void)b; return a; }
+#elif defined(HAVE_STRERROR_R)
+// POSIX version of strerror_r
+static const char *strerror_result(int a, const char *b) { (void)a; return b; }
+#elif defined(HAVE_C__GENERIC)
+
+// what a trick!
+// http://stackoverflow.com/questions/479207/function-overloading-in-c
+static const char *strerror_result_int(int a, const char *b) { (void)a; return b; }
+static const char *strerror_result_string(const char *a, const char *b) { (void)b; return a; }
+
+#define strerror_result(a, b) _Generic((a), \
+ int: strerror_result_int, \
+ char *: strerror_result_string \
+ )(a, b)
+
+#else
+#error "cannot detect the format of function strerror_r()"
+#endif
+
void error_int( const char *prefix, const char *file, const char *function, const unsigned long line, const char *fmt, ... )
{
- va_list args;
-
- // prevent logging too much
- if(error_log_limit(0)) return;
-
- log_date(stderr);
-
- va_start( args, fmt );
- if(debug_flags) fprintf(stderr, "%s (%04lu@%-10.10s:%-15.15s): %s: ", prefix, line, file, function, program_name);
- else fprintf(stderr, "%s: %s: ", prefix, program_name);
- vfprintf( stderr, fmt, args );
- va_end( args );
-
- if(errno) {
- char buf[1024];
- fprintf(stderr, " (errno %d, %s)\n", errno, strerror_r(errno, buf, 1023));
- errno = 0;
- }
- else
- fputc('\n', stderr);
-
- if(error_log_syslog) {
- va_start( args, fmt );
- vsyslog(LOG_ERR, fmt, args );
- va_end( args );
- }
+ va_list args;
+
+ // prevent logging too much
+ if(error_log_limit(0)) return;
+
+ log_date(stderr);
+
+ va_start( args, fmt );
+ if(debug_flags) fprintf(stderr, "%s: %s: (%04lu@%-10.10s:%-15.15s): ", program_name, prefix, line, file, function);
+ else fprintf(stderr, "%s: %s: ", program_name, prefix);
+ vfprintf( stderr, fmt, args );
+ va_end( args );
+
+ if(errno) {
+ char buf[1024];
+ fprintf(stderr, " (errno %d, %s)\n", errno, strerror_result(strerror_r(errno, buf, 1023), buf));
+ errno = 0;
+ }
+ else
+ fputc('\n', stderr);
+
+ if(error_log_syslog) {
+ va_start( args, fmt );
+ vsyslog(LOG_ERR, fmt, args );
+ va_end( args );
+ }
}
void fatal_int( const char *file, const char *function, const unsigned long line, const char *fmt, ... )
{
- va_list args;
+ va_list args;
- log_date(stderr);
+ log_date(stderr);
- va_start( args, fmt );
- if(debug_flags) fprintf(stderr, "FATAL (%04lu@%-10.10s:%-15.15s): %s: ", line, file, function, program_name);
- else fprintf(stderr, "FATAL: %s: ", program_name);
- vfprintf( stderr, fmt, args );
- va_end( args );
+ va_start( args, fmt );
+ if(debug_flags) fprintf(stderr, "%s: FATAL: (%04lu@%-10.10s:%-15.15s): ", program_name, line, file, function);
+ else fprintf(stderr, "%s: FATAL: ", program_name);
+ vfprintf( stderr, fmt, args );
+ va_end( args );
- perror(" # ");
- fputc('\n', stderr);
+ perror(" # ");
+ fputc('\n', stderr);
- if(error_log_syslog) {
- va_start( args, fmt );
- vsyslog(LOG_CRIT, fmt, args );
- va_end( args );
- }
+ if(error_log_syslog) {
+ va_start( args, fmt );
+ vsyslog(LOG_CRIT, fmt, args );
+ va_end( args );
+ }
- netdata_cleanup_and_exit(1);
+ netdata_cleanup_and_exit(1);
}
// ----------------------------------------------------------------------------
void log_access( const char *fmt, ... )
{
- va_list args;
-
- if(stdaccess) {
- log_date(stdaccess);
-
- va_start( args, fmt );
- vfprintf( stdaccess, fmt, args );
- va_end( args );
- fputc('\n', stdaccess);
- }
-
- if(access_log_syslog) {
- va_start( args, fmt );
- vsyslog(LOG_INFO, fmt, args );
- va_end( args );
- }
+ va_list args;
+
+ if(stdaccess) {
+ log_date(stdaccess);
+
+ va_start( args, fmt );
+ vfprintf( stdaccess, fmt, args );
+ va_end( args );
+ fputc('\n', stdaccess);
+ }
+
+ if(access_log_syslog) {
+ va_start( args, fmt );
+ vsyslog(LOG_INFO, fmt, args );
+ va_end( args );
+ }
}
projects / netdata.git / blobdiff