#include <microhttpd.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
#ifndef PROMETHEUS_DEFAULT_STALENESS_DELTA
#define PROMETHEUS_DEFAULT_STALENESS_DELTA TIME_T_TO_CDTIME_T_STATIC(300)
#endif
* know that they are sane. */
for (size_t i = 0; i < m->n_label; i++) {
char value[LABEL_VALUE_SIZE];
- ssnprintf(labels[i], LABEL_BUFFER_SIZE, "%s=\"%s\"", m->label[i]->name,
- escape_label_value(value, sizeof(value), m->label[i]->value));
+ snprintf(labels[i], LABEL_BUFFER_SIZE, "%s=\"%s\"", m->label[i]->name,
+ escape_label_value(value, sizeof(value), m->label[i]->value));
}
strjoin(buffer, buffer_size, labels, m->n_label, ",");
while (c_avl_iterator_next(iter, (void *)&unused_name, (void *)&fam) == 0) {
char line[1024]; /* 4x DATA_MAX_NAME_LEN? */
- ssnprintf(line, sizeof(line), "# HELP %s %s\n", fam->name, fam->help);
+ snprintf(line, sizeof(line), "# HELP %s %s\n", fam->name, fam->help);
buffer->append(buffer, strlen(line), (uint8_t *)line);
- ssnprintf(line, sizeof(line), "# TYPE %s %s\n", fam->name,
- (fam->type == IO__PROMETHEUS__CLIENT__METRIC_TYPE__GAUGE)
- ? "gauge"
- : "counter");
+ snprintf(line, sizeof(line), "# TYPE %s %s\n", fam->name,
+ (fam->type == IO__PROMETHEUS__CLIENT__METRIC_TYPE__GAUGE)
+ ? "gauge"
+ : "counter");
buffer->append(buffer, strlen(line), (uint8_t *)line);
for (size_t i = 0; i < fam->n_metric; i++) {
char timestamp_ms[24] = "";
if (m->has_timestamp_ms)
- ssnprintf(timestamp_ms, sizeof(timestamp_ms), " %" PRIi64,
- m->timestamp_ms);
+ snprintf(timestamp_ms, sizeof(timestamp_ms), " %" PRIi64,
+ m->timestamp_ms);
if (fam->type == IO__PROMETHEUS__CLIENT__METRIC_TYPE__GAUGE)
- ssnprintf(line, sizeof(line), "%s{%s} " GAUGE_FORMAT "%s\n", fam->name,
- format_labels(labels, sizeof(labels), m), m->gauge->value,
- timestamp_ms);
+ snprintf(line, sizeof(line), "%s{%s} " GAUGE_FORMAT "%s\n", fam->name,
+ format_labels(labels, sizeof(labels), m), m->gauge->value,
+ timestamp_ms);
else /* if (fam->type == IO__PROMETHEUS__CLIENT__METRIC_TYPE__COUNTER) */
- ssnprintf(line, sizeof(line), "%s{%s} %.0f%s\n", fam->name,
- format_labels(labels, sizeof(labels), m), m->counter->value,
- timestamp_ms);
+ snprintf(line, sizeof(line), "%s{%s} %.0f%s\n", fam->name,
+ format_labels(labels, sizeof(labels), m), m->counter->value,
+ timestamp_ms);
buffer->append(buffer, strlen(line), (uint8_t *)line);
}
c_avl_iterator_destroy(iter);
char server[1024];
- ssnprintf(server, sizeof(server), "\n# collectd/write_prometheus %s at %s\n",
- PACKAGE_VERSION, hostname_g);
+ snprintf(server, sizeof(server), "\n# collectd/write_prometheus %s at %s\n",
+ PACKAGE_VERSION, hostname_g);
buffer->append(buffer, strlen(server), (uint8_t *)server);
pthread_mutex_unlock(&metrics_lock);
((fam->n_metric - 1) - i) * sizeof(fam->metric[i]));
fam->n_metric--;
+ if (fam->n_metric == 0) {
+ sfree(fam->metric);
+ return 0;
+ }
+
Io__Prometheus__Client__Metric **tmp =
realloc(fam->metric, fam->n_metric * sizeof(*fam->metric));
- if ((tmp != NULL) || (fam->n_metric == 0))
+ if (tmp != NULL)
fam->metric = tmp;
return 0;
msg->name = name;
char help[1024];
- ssnprintf(
+ snprintf(
help, sizeof(help),
"write_prometheus plugin: '%s' Type: '%s', Dstype: '%s', Dsname: '%s'",
vl->plugin, vl->type, DS_TYPE_TO_STRING(ds->ds[ds_index].type),
}
/* }}} */
+static void prom_logger(__attribute__((unused)) void *arg, char const *fmt,
+ va_list ap) {
+ /* {{{ */
+ char errbuf[1024];
+ vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
+
+ ERROR("write_prometheus plugin: %s", errbuf);
+} /* }}} prom_logger */
+
+#if MHD_VERSION >= 0x00090000
+static int prom_open_socket(int addrfamily) {
+ /* {{{ */
+ char service[NI_MAXSERV];
+ snprintf(service, sizeof(service), "%hu", httpd_port);
+
+ struct addrinfo *res;
+ int status = getaddrinfo(NULL, service,
+ &(struct addrinfo){
+ .ai_flags = AI_PASSIVE | AI_ADDRCONFIG,
+ .ai_family = addrfamily,
+ .ai_socktype = SOCK_STREAM,
+ },
+ &res);
+ if (status != 0) {
+ return -1;
+ }
+
+ int fd = -1;
+ for (struct addrinfo *ai = res; ai != NULL; ai = ai->ai_next) {
+ fd = socket(ai->ai_family, ai->ai_socktype | SOCK_CLOEXEC, 0);
+ if (fd == -1)
+ continue;
+
+ int tmp = 1;
+ if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp)) != 0) {
+ char errbuf[1024];
+ WARNING("write_prometheus: setsockopt(SO_REUSEADDR) failed: %s",
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ close(fd);
+ fd = -1;
+ continue;
+ }
+
+ if (bind(fd, ai->ai_addr, ai->ai_addrlen) != 0) {
+ close(fd);
+ fd = -1;
+ continue;
+ }
+
+ if (listen(fd, /* backlog = */ 16) != 0) {
+ close(fd);
+ fd = -1;
+ continue;
+ }
+
+ break;
+ }
+
+ freeaddrinfo(res);
+
+ return fd;
+} /* }}} int prom_open_socket */
+
+static struct MHD_Daemon *prom_start_daemon() {
+ /* {{{ */
+ int fd = prom_open_socket(PF_INET6);
+ if (fd == -1)
+ fd = prom_open_socket(PF_INET);
+ if (fd == -1) {
+ ERROR("write_prometheus plugin: Opening a listening socket failed.");
+ return NULL;
+ }
+
+ struct MHD_Daemon *d = MHD_start_daemon(
+ MHD_USE_THREAD_PER_CONNECTION | MHD_USE_DEBUG, httpd_port,
+ /* MHD_AcceptPolicyCallback = */ NULL,
+ /* MHD_AcceptPolicyCallback arg = */ NULL, http_handler, NULL,
+ MHD_OPTION_LISTEN_SOCKET, fd, MHD_OPTION_EXTERNAL_LOGGER, prom_logger,
+ NULL, MHD_OPTION_END);
+ if (d == NULL) {
+ ERROR("write_prometheus plugin: MHD_start_daemon() failed.");
+ close(fd);
+ return NULL;
+ }
+
+ return d;
+} /* }}} struct MHD_Daemon *prom_start_daemon */
+#else /* if MHD_VERSION < 0x00090000 */
+static struct MHD_Daemon *prom_start_daemon() {
+ /* {{{ */
+ struct MHD_Daemon *d = MHD_start_daemon(
+ MHD_USE_THREAD_PER_CONNECTION | MHD_USE_DEBUG, httpd_port,
+ /* MHD_AcceptPolicyCallback = */ NULL,
+ /* MHD_AcceptPolicyCallback arg = */ NULL, http_handler, NULL,
+ MHD_OPTION_EXTERNAL_LOGGER, prom_logger, NULL, MHD_OPTION_END);
+ if (d == NULL) {
+ ERROR("write_prometheus plugin: MHD_start_daemon() failed.");
+ return NULL;
+ }
+
+ return d;
+} /* }}} struct MHD_Daemon *prom_start_daemon */
+#endif
+
/*
* collectd callbacks
*/
}
if (httpd == NULL) {
- unsigned int flags = MHD_USE_THREAD_PER_CONNECTION;
-#if MHD_VERSION >= 0x00093300
- flags |= MHD_USE_DUAL_STACK;
-#endif
-
- httpd = MHD_start_daemon(flags, httpd_port,
- /* MHD_AcceptPolicyCallback = */ NULL,
- /* MHD_AcceptPolicyCallback arg = */ NULL,
- http_handler, NULL, MHD_OPTION_END);
+ httpd = prom_start_daemon();
if (httpd == NULL) {
ERROR("write_prometheus plugin: MHD_start_daemon() failed.");
return -1;
projects / collectd.git / blobdiff