/**
* collectd - src/utils_time.c
- * Copyright (C) 2010 Florian octo Forster
+ * Copyright (C) 2010-2015 Florian octo Forster
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Florian octo Forster <ff at octo.it>
+ * Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
-#include "utils_time.h"
-#include "plugin.h"
+
#include "common.h"
+#include "plugin.h"
+#include "utils_time.h"
+
+#ifndef DEFAULT_MOCK_TIME
+#define DEFAULT_MOCK_TIME 1542455354518929408ULL
+#endif
+#ifdef MOCK_TIME
+cdtime_t cdtime_mock = (cdtime_t)MOCK_TIME;
+
+cdtime_t cdtime(void) { return cdtime_mock; }
+#else /* !MOCK_TIME */
#if HAVE_CLOCK_GETTIME
-cdtime_t cdtime (void) /* {{{ */
+cdtime_t cdtime(void) /* {{{ */
{
int status;
- struct timespec ts = { 0, 0 };
+ struct timespec ts = {0, 0};
- status = clock_gettime (CLOCK_REALTIME, &ts);
- if (status != 0)
- {
+ status = clock_gettime(CLOCK_REALTIME, &ts);
+ if (status != 0) {
char errbuf[1024];
- ERROR ("cdtime: clock_gettime failed: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (0);
+ ERROR("cdtime: clock_gettime failed: %s",
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ return 0;
}
- return (TIMESPEC_TO_CDTIME_T (&ts));
+ return TIMESPEC_TO_CDTIME_T(&ts);
} /* }}} cdtime_t cdtime */
-#else
+#else /* !HAVE_CLOCK_GETTIME */
/* Work around for Mac OS X which doesn't have clock_gettime(2). *sigh* */
-cdtime_t cdtime (void) /* {{{ */
+cdtime_t cdtime(void) /* {{{ */
{
int status;
- struct timeval tv = { 0, 0 };
+ struct timeval tv = {0, 0};
- status = gettimeofday (&tv, /* struct timezone = */ NULL);
- if (status != 0)
- {
+ status = gettimeofday(&tv, /* struct timezone = */ NULL);
+ if (status != 0) {
char errbuf[1024];
- ERROR ("cdtime: gettimeofday failed: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (0);
+ ERROR("cdtime: gettimeofday failed: %s",
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ return 0;
}
- return (TIMEVAL_TO_CDTIME_T (&tv));
+ return TIMEVAL_TO_CDTIME_T(&tv);
} /* }}} cdtime_t cdtime */
#endif
+#endif
-size_t cdtime_to_iso8601 (char *s, size_t max, cdtime_t t) /* {{{ */
+/**********************************************************************
+ Time retrieval functions
+***********************************************************************/
+
+static int get_utc_time(cdtime_t t, struct tm *t_tm, long *nsec) /* {{{ */
{
- struct timespec t_spec;
- struct tm t_tm;
+ struct timespec t_spec = CDTIME_T_TO_TIMESPEC(t);
+ NORMALIZE_TIMESPEC(t_spec);
+
+ if (gmtime_r(&t_spec.tv_sec, t_tm) == NULL) {
+ char errbuf[1024];
+ int status = errno;
+ ERROR("get_utc_time: gmtime_r failed: %s",
+ sstrerror(status, errbuf, sizeof(errbuf)));
+ return status;
+ }
- size_t len;
+ *nsec = t_spec.tv_nsec;
+ return 0;
+} /* }}} int get_utc_time */
- CDTIME_T_TO_TIMESPEC (t, &t_spec);
- NORMALIZE_TIMESPEC (t_spec);
+static int get_local_time(cdtime_t t, struct tm *t_tm, long *nsec) /* {{{ */
+{
+ struct timespec t_spec = CDTIME_T_TO_TIMESPEC(t);
+ NORMALIZE_TIMESPEC(t_spec);
- if (localtime_r ((time_t *)&t_spec.tv_sec, &t_tm) == NULL) {
+ if (localtime_r(&t_spec.tv_sec, t_tm) == NULL) {
char errbuf[1024];
- ERROR ("cdtime_to_iso8601: localtime_r failed: %s",
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (0);
+ int status = errno;
+ ERROR("get_local_time: localtime_r failed: %s",
+ sstrerror(status, errbuf, sizeof(errbuf)));
+ return status;
}
- len = strftime (s, max, "%Y-%m-%dT%H:%M:%S", &t_tm);
- if (len == 0)
- return 0;
+ *nsec = t_spec.tv_nsec;
+ return 0;
+} /* }}} int get_local_time */
+
+/**********************************************************************
+ Formatting functions
+***********************************************************************/
+
+static const char zulu_zone[] = "Z";
+
+/* format_zone reads time zone information from "extern long timezone", exported
+ * by <time.h>, and formats it according to RFC 3339. This differs from
+ * strftime()'s "%z" format by including a colon between hour and minute. */
+static int format_zone(char *buffer, size_t buffer_size,
+ struct tm const *tm) /* {{{ */
+{
+ char tmp[7];
+ size_t sz;
+
+ if ((buffer == NULL) || (buffer_size < 7))
+ return EINVAL;
- if (max - len > 2) {
- int n = snprintf (s + len, max - len, ".%09i", (int)t_spec.tv_nsec);
- len += (n < max - len) ? n : max - len;
+ sz = strftime(tmp, sizeof(tmp), "%z", tm);
+ if (sz == 0)
+ return ENOMEM;
+ if (sz != 5) {
+ DEBUG("format_zone: strftime(\"%%z\") = \"%s\", want \"+hhmm\"", tmp);
+ sstrncpy(buffer, tmp, buffer_size);
+ return 0;
}
- if (max - len > 3) {
- int n = strftime (s + len, max - len, "%z", &t_tm);
- len += (n < max - len) ? n : max - len;
+ buffer[0] = tmp[0];
+ buffer[1] = tmp[1];
+ buffer[2] = tmp[2];
+ buffer[3] = ':';
+ buffer[4] = tmp[3];
+ buffer[5] = tmp[4];
+ buffer[6] = 0;
+
+ return 0;
+} /* }}} int format_zone */
+
+int format_rfc3339(char *buffer, size_t buffer_size, struct tm const *t_tm,
+ long nsec, _Bool print_nano, char const *zone) /* {{{ */
+{
+ int len;
+ char *pos = buffer;
+ size_t size_left = buffer_size;
+
+ if ((len = strftime(pos, size_left, "%Y-%m-%dT%H:%M:%S", t_tm)) == 0)
+ return ENOMEM;
+ pos += len;
+ size_left -= len;
+
+ if (print_nano) {
+ if ((len = ssnprintf(pos, size_left, ".%09ld", nsec)) == 0)
+ return ENOMEM;
+ pos += len;
+ size_left -= len;
}
- s[max - 1] = '\0';
- return len;
-} /* }}} size_t cdtime_to_iso8601 */
+ sstrncpy(pos, zone, size_left);
+ return 0;
+} /* }}} int format_rfc3339 */
+
+int format_rfc3339_utc(char *buffer, size_t buffer_size, cdtime_t t,
+ _Bool print_nano) /* {{{ */
+{
+ struct tm t_tm;
+ long nsec = 0;
+ int status;
+
+ if ((status = get_utc_time(t, &t_tm, &nsec)) != 0)
+ return status; /* The error should have already be reported. */
+
+ return format_rfc3339(buffer, buffer_size, &t_tm, nsec, print_nano,
+ zulu_zone);
+} /* }}} int format_rfc3339_utc */
+
+int format_rfc3339_local(char *buffer, size_t buffer_size, cdtime_t t,
+ _Bool print_nano) /* {{{ */
+{
+ struct tm t_tm;
+ long nsec = 0;
+ int status;
+ char zone[7]; /* +00:00 */
+
+ if ((status = get_local_time(t, &t_tm, &nsec)) != 0)
+ return status; /* The error should have already be reported. */
+
+ if ((status = format_zone(zone, sizeof(zone), &t_tm)) != 0)
+ return status;
+
+ return format_rfc3339(buffer, buffer_size, &t_tm, nsec, print_nano, zone);
+} /* }}} int format_rfc3339_local */
+
+/**********************************************************************
+ Public functions
+***********************************************************************/
+
+int rfc3339(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
+{
+ if (buffer_size < RFC3339_SIZE)
+ return ENOMEM;
+
+ return format_rfc3339_utc(buffer, buffer_size, t, 0);
+} /* }}} int rfc3339 */
+
+int rfc3339nano(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
+{
+ if (buffer_size < RFC3339NANO_SIZE)
+ return ENOMEM;
+
+ return format_rfc3339_utc(buffer, buffer_size, t, 1);
+} /* }}} int rfc3339nano */
+
+int rfc3339_local(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
+{
+ if (buffer_size < RFC3339_SIZE)
+ return ENOMEM;
+
+ return format_rfc3339_local(buffer, buffer_size, t, 0);
+} /* }}} int rfc3339 */
+
+int rfc3339nano_local(char *buffer, size_t buffer_size, cdtime_t t) /* {{{ */
+{
+ if (buffer_size < RFC3339NANO_SIZE)
+ return ENOMEM;
+
+ return format_rfc3339_local(buffer, buffer_size, t, 1);
+} /* }}} int rfc3339nano */
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collectd.git / blobdiff