#define RIEMANN_HOST "localhost"
#define RIEMANN_PORT "5555"
+#define RIEMANN_TTL_FACTOR 2.0
struct riemann_host {
char *name;
char *service;
_Bool use_tcp;
int s;
+ double ttl_factor;
int reference_count;
};
static char **riemann_tags;
static size_t riemann_tags_num;
+static char **riemann_attrs;
+static size_t riemann_attrs_num;
static void riemann_event_protobuf_free (Event *event) /* {{{ */
{
return (0);
}
-static int
-riemann_send(struct riemann_host *host, Msg const *msg)
+static inline int
+riemann_send_msg(struct riemann_host *host, const Msg *msg)
{
- u_char *buffer;
+ int status = 0;
+ u_char *buffer = NULL;
size_t buffer_len;
- int status;
-
- pthread_mutex_lock (&host->lock);
status = riemann_connect (host);
+
if (status != 0)
- {
- pthread_mutex_unlock (&host->lock);
return status;
- }
buffer_len = msg__get_packed_size(msg);
+
if (host->use_tcp)
buffer_len += 4;
buffer = malloc (buffer_len);
+
if (buffer == NULL) {
- pthread_mutex_unlock (&host->lock);
ERROR ("write_riemann plugin: malloc failed.");
return ENOMEM;
}
+
memset (buffer, 0, buffer_len);
if (host->use_tcp)
}
status = (int) swrite (host->s, buffer, buffer_len);
+
if (status != 0)
{
char errbuf[1024];
- riemann_disconnect (host);
- pthread_mutex_unlock (&host->lock);
-
ERROR ("write_riemann plugin: Sending to Riemann at %s:%s failed: %s",
(host->node != NULL) ? host->node : RIEMANN_HOST,
(host->service != NULL) ? host->service : RIEMANN_PORT,
sstrerror (errno, errbuf, sizeof (errbuf)));
+
sfree (buffer);
return -1;
}
- pthread_mutex_unlock (&host->lock);
sfree (buffer);
return 0;
}
+static inline int
+riemann_recv_ack(struct riemann_host *host)
+{
+ int status = 0;
+ Msg *msg = NULL;
+ uint32_t header;
+
+ status = (int) sread (host->s, &header, 4);
+
+ if (status != 0)
+ return -1;
+
+ size_t size = ntohl(header);
+
+ // Buffer on the stack since acknowledges are typically small.
+ u_char buffer[size];
+ memset (buffer, 0, size);
+
+ status = (int) sread (host->s, buffer, size);
+
+ if (status != 0)
+ return status;
+
+ msg = msg__unpack (NULL, size, buffer);
+
+ if (msg == NULL)
+ return -1;
+
+ if (!msg->ok)
+ {
+ ERROR ("write_riemann plugin: Sending to Riemann at %s:%s acknowledgement message reported error: %s",
+ (host->node != NULL) ? host->node : RIEMANN_HOST,
+ (host->service != NULL) ? host->service : RIEMANN_PORT,
+ msg->error);
+
+ msg__free_unpacked(msg, NULL);
+ return -1;
+ }
+
+ msg__free_unpacked (msg, NULL);
+ return 0;
+}
+
+/**
+ * Function to send messages (Msg) to riemann.
+ *
+ * Acquires the host lock, disconnects on errors.
+ */
+static int
+riemann_send(struct riemann_host *host, Msg const *msg)
+{
+ int status = 0;
+ pthread_mutex_lock (&host->lock);
+
+ status = riemann_send_msg(host, msg);
+
+ if (status != 0) {
+ riemann_disconnect (host);
+ pthread_mutex_unlock (&host->lock);
+ return status;
+ }
+
+ /*
+ * For TCP we need to receive message acknowledgemenent.
+ */
+ if (host->use_tcp)
+ {
+ status = riemann_recv_ack(host);
+
+ if (status != 0)
+ {
+ riemann_disconnect (host);
+ pthread_mutex_unlock (&host->lock);
+ return status;
+ }
+ }
+
+ pthread_mutex_unlock (&host->lock);
+ return 0;
+}
+
static int riemann_event_add_tag (Event *event, char const *tag) /* {{{ */
{
return (strarray_add (&event->tags, &event->n_tags, tag));
riemann_event_add_attribute (event, "type_instance",
n->type_instance);
+ for (i = 0; i < riemann_attrs_num; i += 2)
+ riemann_event_add_attribute(event,
+ riemann_attrs[i],
+ riemann_attrs[i +1]);
+
for (i = 0; i < riemann_tags_num; i++)
riemann_event_add_tag (event, riemann_tags[i]);
n->type, n->type_instance);
event->service = strdup (&service_buffer[1]);
- /* Pull in values from threshold */
+ /* Pull in values from threshold and add extra attributes */
for (meta = n->meta; meta != NULL; meta = meta->next)
{
- if (strcasecmp ("CurrentValue", meta->name) != 0)
+ if (strcasecmp ("CurrentValue", meta->name) == 0 && meta->type == NM_TYPE_DOUBLE)
+ {
+ event->metric_d = meta->nm_value.nm_double;
+ event->has_metric_d = 1;
continue;
+ }
- event->metric_d = meta->nm_value.nm_double;
- event->has_metric_d = 1;
- break;
+ if (meta->type == NM_TYPE_STRING) {
+ riemann_event_add_attribute (event, meta->name, meta->nm_value.nm_string);
+ continue;
+ }
}
DEBUG ("write_riemann plugin: Successfully created protobuf for notification: "
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));
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_attribute (event, "plugin", vl->plugin);
riemann_event_add_attribute (event, "ds_index", ds_index);
}
+ for (i = 0; i < riemann_attrs_num; i += 2)
+ riemann_event_add_attribute(event,
+ riemann_attrs[i],
+ riemann_attrs[i +1]);
+
for (i = 0; i < riemann_tags_num; i++)
riemann_event_add_tag (event, riemann_tags[i]);
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) {
&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);
if (strcasecmp("Node", child->key) == 0) {
riemann_config_node (child);
+ } else if (strcasecmp(child->key, "attribute") == 0) {
+ char *key = NULL;
+ char *val = NULL;
+
+ if (child->values_num != 2) {
+ WARNING("riemann attributes need both a key and a value.");
+ return (-1);
+ }
+ if (child->values[0].type != OCONFIG_TYPE_STRING ||
+ child->values[1].type != OCONFIG_TYPE_STRING) {
+ WARNING("riemann attribute needs string arguments.");
+ return (-1);
+ }
+ if ((key = strdup(child->values[0].value.string)) == NULL) {
+ WARNING("cannot allocate memory for attribute key.");
+ return (-1);
+ }
+ if ((val = strdup(child->values[1].value.string)) == NULL) {
+ WARNING("cannot allocate memory for attribute value.");
+ return (-1);
+ }
+ strarray_add(&riemann_attrs, &riemann_attrs_num, key);
+ strarray_add(&riemann_attrs, &riemann_attrs_num, val);
+ DEBUG("write_riemann: got attr: %s => %s", key, val);
+ sfree(key);
+ sfree(val);
} else if (strcasecmp(child->key, "tag") == 0) {
char *tmp = NULL;
status = cf_util_get_string(child, &tmp);
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