Code

Merge remote-tracking branch 'github/pr/387'
[collectd.git] / src / write_riemann.c
index df0c373352d696ebd8b6ff7490f14f1c715862f0..3345d0444a94653a4e3be42a9d9051bfd264e790 100644 (file)
@@ -37,6 +37,7 @@
 
 #define RIEMANN_HOST           "localhost"
 #define RIEMANN_PORT           "5555"
+#define RIEMANN_TTL_FACTOR      2.0
 
 struct riemann_host {
        char                    *name;
@@ -49,6 +50,7 @@ struct riemann_host {
        char                    *service;
        _Bool                    use_tcp;
        int                      s;
+       double                   ttl_factor;
 
        int                      reference_count;
 };
@@ -56,18 +58,10 @@ struct riemann_host {
 static char    **riemann_tags;
 static size_t    riemann_tags_num;
 
-static int     riemann_send(struct riemann_host *, Msg const *);
-static int     riemann_notification(const notification_t *, user_data_t *);
-static int     riemann_write(const data_set_t *, const value_list_t *, user_data_t *);
-static int     riemann_connect(struct riemann_host *);
-static int     riemann_disconnect (struct riemann_host *host);
-static void    riemann_free(void *);
-static int     riemann_config_node(oconfig_item_t *);
-static int     riemann_config(oconfig_item_t *);
-void   module_register(void);
-
 static void riemann_event_protobuf_free (Event *event) /* {{{ */
 {
+       size_t i;
+
        if (event == NULL)
                return;
 
@@ -80,6 +74,15 @@ static void riemann_event_protobuf_free (Event *event) /* {{{ */
        event->tags = NULL;
        event->n_tags = 0;
 
+       for (i = 0; i < event->n_attributes; i++)
+       {
+               sfree (event->attributes[i]->key);
+               sfree (event->attributes[i]->value);
+               sfree (event->attributes[i]);
+       }
+       sfree (event->attributes);
+       event->n_attributes = 0;
+
        sfree (event);
 } /* }}} void riemann_event_protobuf_free */
 
@@ -102,6 +105,79 @@ static void riemann_msg_protobuf_free (Msg *msg) /* {{{ */
        sfree (msg);
 } /* }}} void riemann_msg_protobuf_free */
 
+/* host->lock must be held when calling this function. */
+static int
+riemann_connect(struct riemann_host *host)
+{
+       int                      e;
+       struct addrinfo         *ai, *res, hints;
+       char const              *node;
+       char const              *service;
+
+       if (host->flags & F_CONNECT)
+               return 0;
+
+       memset(&hints, 0, sizeof(hints));
+       memset(&service, 0, sizeof(service));
+       hints.ai_family = AF_UNSPEC;
+       hints.ai_socktype = host->use_tcp ? SOCK_STREAM : SOCK_DGRAM;
+#ifdef AI_ADDRCONFIG
+       hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+
+       node = (host->node != NULL) ? host->node : RIEMANN_HOST;
+       service = (host->service != NULL) ? host->service : RIEMANN_PORT;
+
+       if ((e = getaddrinfo(node, service, &hints, &res)) != 0) {
+               ERROR ("write_riemann plugin: Unable to resolve host \"%s\": %s",
+                       node, gai_strerror(e));
+               return -1;
+       }
+
+       host->s = -1;
+       for (ai = res; ai != NULL; ai = ai->ai_next) {
+               if ((host->s = socket(ai->ai_family,
+                                     ai->ai_socktype,
+                                     ai->ai_protocol)) == -1) {
+                       continue;
+               }
+
+               if (connect(host->s, ai->ai_addr, ai->ai_addrlen) != 0) {
+                       close(host->s);
+                       host->s = -1;
+                       continue;
+               }
+
+               host->flags |= F_CONNECT;
+               DEBUG("write_riemann plugin: got a succesful connection for: %s:%s",
+                               node, service);
+               break;
+       }
+
+       freeaddrinfo(res);
+
+       if (host->s < 0) {
+               WARNING("write_riemann plugin: Unable to connect to Riemann at %s:%s",
+                               node, service);
+               return -1;
+       }
+       return 0;
+}
+
+/* host->lock must be held when calling this function. */
+static int
+riemann_disconnect (struct riemann_host *host)
+{
+       if ((host->flags & F_CONNECT) == 0)
+               return (0);
+
+       close (host->s);
+       host->s = -1;
+       host->flags &= ~F_CONNECT;
+
+       return (0);
+}
+
 static int
 riemann_send(struct riemann_host *host, Msg const *msg)
 {
@@ -162,23 +238,44 @@ riemann_send(struct riemann_host *host, Msg const *msg)
        return 0;
 }
 
-static int riemann_event_add_tag (Event *event, /* {{{ */
-               char const *format, ...)
+static int riemann_event_add_tag (Event *event, char const *tag) /* {{{ */
 {
-       va_list ap;
-       char buffer[1024];
-       size_t ret;
-
-       va_start (ap, format);
-       ret = vsnprintf (buffer, sizeof (buffer), format, ap);
-       if (ret >= sizeof (buffer))
-               ret = sizeof (buffer) - 1;
-       buffer[ret] = 0;
-       va_end (ap);
-
-       return (strarray_add (&event->tags, &event->n_tags, buffer));
+       return (strarray_add (&event->tags, &event->n_tags, tag));
 } /* }}} int riemann_event_add_tag */
 
+static int riemann_event_add_attribute (Event *event, /* {{{ */
+               char const *key, char const *value)
+{
+       Attribute **new_attributes;
+       Attribute *a;
+
+       new_attributes = realloc (event->attributes,
+                       sizeof (*event->attributes) * (event->n_attributes + 1));
+       if (new_attributes == NULL)
+       {
+               ERROR ("write_riemann plugin: realloc failed.");
+               return (ENOMEM);
+       }
+       event->attributes = new_attributes;
+
+       a = malloc (sizeof (*a));
+       if (a == NULL)
+       {
+               ERROR ("write_riemann plugin: malloc failed.");
+               return (ENOMEM);
+       }
+       attribute__init (a);
+
+       a->key = strdup (key);
+       if (value != NULL)
+               a->value = strdup (value);
+
+       event->attributes[event->n_attributes] = a;
+       event->n_attributes++;
+
+       return (0);
+} /* }}} int riemann_event_add_attribute */
+
 static Msg *riemann_notification_to_protobuf (struct riemann_host *host, /* {{{ */
                notification_t const *n)
 {
@@ -226,28 +323,30 @@ static Msg *riemann_notification_to_protobuf (struct riemann_host *host, /* {{{
 
        switch (n->severity)
        {
-               case NOTIF_OKAY:        severity = "okay"; break;
+               case NOTIF_OKAY:        severity = "ok"; break;
                case NOTIF_WARNING:     severity = "warning"; break;
-               case NOTIF_FAILURE:     severity = "failure"; break;
+               case NOTIF_FAILURE:     severity = "critical"; break;
                default:                severity = "unknown";
        }
        event->state = strdup (severity);
 
        riemann_event_add_tag (event, "notification");
+       if (n->host[0] != 0)
+               riemann_event_add_attribute (event, "host", n->host);
        if (n->plugin[0] != 0)
-               riemann_event_add_tag (event, "plugin:%s", n->plugin);
+               riemann_event_add_attribute (event, "plugin", n->plugin);
        if (n->plugin_instance[0] != 0)
-               riemann_event_add_tag (event, "plugin_instance:%s",
+               riemann_event_add_attribute (event, "plugin_instance",
                                n->plugin_instance);
 
        if (n->type[0] != 0)
-               riemann_event_add_tag (event, "type:%s", n->type);
+               riemann_event_add_attribute (event, "type", n->type);
        if (n->type_instance[0] != 0)
-               riemann_event_add_tag (event, "type_instance:%s",
+               riemann_event_add_attribute (event, "type_instance",
                                n->type_instance);
 
        for (i = 0; i < riemann_tags_num; i++)
-               riemann_event_add_tag (event, "%s", riemann_tags[i]);
+               riemann_event_add_tag (event, riemann_tags[i]);
 
        format_name (service_buffer, sizeof (service_buffer),
                        /* host = */ "", n->plugin, n->plugin_instance,
@@ -279,6 +378,7 @@ static Event *riemann_value_to_protobuf (struct riemann_host const *host, /* {{{
        Event *event;
        char name_buffer[5 * DATA_MAX_NAME_LEN];
        char service_buffer[6 * DATA_MAX_NAME_LEN];
+       double ttl;
        int i;
 
        event = malloc (sizeof (*event));
@@ -293,34 +393,44 @@ static Event *riemann_value_to_protobuf (struct riemann_host const *host, /* {{{
        event->host = strdup (vl->host);
        event->time = CDTIME_T_TO_TIME_T (vl->time);
        event->has_time = 1;
-       event->ttl = CDTIME_T_TO_TIME_T (2 * vl->interval);
+
+       ttl = CDTIME_T_TO_DOUBLE (vl->interval) * host->ttl_factor;
+       event->ttl = (float) ttl;
        event->has_ttl = 1;
 
-       riemann_event_add_tag (event, "plugin:%s", vl->plugin);
+       riemann_event_add_attribute (event, "plugin", vl->plugin);
        if (vl->plugin_instance[0] != 0)
-               riemann_event_add_tag (event, "plugin_instance:%s",
+               riemann_event_add_attribute (event, "plugin_instance",
                                vl->plugin_instance);
 
-       riemann_event_add_tag (event, "type:%s", vl->type);
+       riemann_event_add_attribute (event, "type", vl->type);
        if (vl->type_instance[0] != 0)
-               riemann_event_add_tag (event, "type_instance:%s",
+               riemann_event_add_attribute (event, "type_instance",
                                vl->type_instance);
 
        if ((ds->ds[index].type != DS_TYPE_GAUGE) && (rates != NULL))
        {
-               riemann_event_add_tag (event, "ds_type:%s:rate",
+               char ds_type[DATA_MAX_NAME_LEN];
+
+               ssnprintf (ds_type, sizeof (ds_type), "%s:rate",
                                DS_TYPE_TO_STRING(ds->ds[index].type));
+               riemann_event_add_attribute (event, "ds_type", ds_type);
        }
        else
        {
-               riemann_event_add_tag (event, "ds_type:%s",
+               riemann_event_add_attribute (event, "ds_type",
                                DS_TYPE_TO_STRING(ds->ds[index].type));
        }
-       riemann_event_add_tag (event, "ds_name:%s", ds->ds[index].name);
-       riemann_event_add_tag (event, "ds_index:%zu", index);
+       riemann_event_add_attribute (event, "ds_name", ds->ds[index].name);
+       {
+               char ds_index[DATA_MAX_NAME_LEN];
+
+               ssnprintf (ds_index, sizeof (ds_index), "%zu", index);
+               riemann_event_add_attribute (event, "ds_index", ds_index);
+       }
 
        for (i = 0; i < riemann_tags_num; i++)
-               riemann_event_add_tag (event, "%s", riemann_tags[i]);
+               riemann_event_add_tag (event, riemann_tags[i]);
 
        if (ds->ds[index].type == DS_TYPE_GAUGE)
        {
@@ -458,79 +568,6 @@ riemann_write(const data_set_t *ds,
        return status;
 }
 
-/* host->lock must be held when calling this function. */
-static int
-riemann_connect(struct riemann_host *host)
-{
-       int                      e;
-       struct addrinfo         *ai, *res, hints;
-       char const              *node;
-       char const              *service;
-
-       if (host->flags & F_CONNECT)
-               return 0;
-
-       memset(&hints, 0, sizeof(hints));
-       memset(&service, 0, sizeof(service));
-       hints.ai_family = AF_UNSPEC;
-       hints.ai_socktype = host->use_tcp ? SOCK_STREAM : SOCK_DGRAM;
-#ifdef AI_ADDRCONFIG
-       hints.ai_flags |= AI_ADDRCONFIG;
-#endif
-
-       node = (host->node != NULL) ? host->node : RIEMANN_HOST;
-       service = (host->service != NULL) ? host->service : RIEMANN_PORT;
-
-       if ((e = getaddrinfo(node, service, &hints, &res)) != 0) {
-               ERROR ("write_riemann plugin: Unable to resolve host \"%s\": %s",
-                       node, gai_strerror(e));
-               return -1;
-       }
-
-       host->s = -1;
-       for (ai = res; ai != NULL; ai = ai->ai_next) {
-               if ((host->s = socket(ai->ai_family,
-                                     ai->ai_socktype,
-                                     ai->ai_protocol)) == -1) {
-                       continue;
-               }
-
-               if (connect(host->s, ai->ai_addr, ai->ai_addrlen) != 0) {
-                       close(host->s);
-                       host->s = -1;
-                       continue;
-               }
-
-               host->flags |= F_CONNECT;
-               DEBUG("write_riemann plugin: got a succesful connection for: %s:%s",
-                               node, service);
-               break;
-       }
-
-       freeaddrinfo(res);
-
-       if (host->s < 0) {
-               WARNING("write_riemann plugin: Unable to connect to Riemann at %s:%s",
-                               node, service);
-               return -1;
-       }
-       return 0;
-}
-
-/* host->lock must be held when calling this function. */
-static int
-riemann_disconnect (struct riemann_host *host)
-{
-       if ((host->flags & F_CONNECT) == 0)
-               return (0);
-
-       close (host->s);
-       host->s = -1;
-       host->flags &= ~F_CONNECT;
-
-       return (0);
-}
-
 static void
 riemann_free(void *p)
 {
@@ -576,6 +613,7 @@ riemann_config_node(oconfig_item_t *ci)
        host->store_rates = 1;
        host->always_append_ds = 0;
        host->use_tcp = 0;
+       host->ttl_factor = RIEMANN_TTL_FACTOR;
 
        status = cf_util_get_string (ci, &host->name);
        if (status != 0) {
@@ -635,6 +673,33 @@ riemann_config_node(oconfig_item_t *ci)
                                        &host->always_append_ds);
                        if (status != 0)
                                break;
+               } else if (strcasecmp ("TTLFactor", child->key) == 0) {
+                       double tmp = NAN;
+                       status = cf_util_get_double (child, &tmp);
+                       if (status != 0)
+                               break;
+                       if (tmp >= 2.0) {
+                               host->ttl_factor = tmp;
+                       } else if (tmp >= 1.0) {
+                               NOTICE ("write_riemann plugin: The configured "
+                                               "TTLFactor is very small "
+                                               "(%.1f). A value of 2.0 or "
+                                               "greater is recommended.",
+                                               tmp);
+                               host->ttl_factor = tmp;
+                       } else if (tmp > 0.0) {
+                               WARNING ("write_riemann plugin: The configured "
+                                               "TTLFactor is too small to be "
+                                               "useful (%.1f). I'll use it "
+                                               "since the user knows best, "
+                                               "but under protest.",
+                                               tmp);
+                               host->ttl_factor = tmp;
+                       } else { /* zero, negative and NAN */
+                               ERROR ("write_riemann plugin: The configured "
+                                               "TTLFactor is invalid (%.1f).",
+                                               tmp);
+                       }
                } else {
                        WARNING("write_riemann plugin: ignoring unknown config "
                                "option: \"%s\"", child->key);