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;
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 */
-static void riemann_msg_protobuf_free (Msg *msg) /* {{{ */
+static void riemann_msg_protobuf_free(Msg *msg) /* {{{ */
{
size_t i;
sfree (msg);
} /* }}} void riemann_msg_protobuf_free */
-static int
-riemann_send(struct riemann_host *host, Msg const *msg)
+/* host->lock must be held when calling this function. */
+static int riemann_connect(struct riemann_host *host) /* {{{ */
{
- u_char *buffer;
- size_t buffer_len;
- int status;
+ int e;
+ struct addrinfo *ai, *res, hints;
+ char const *node;
+ char const *service;
- pthread_mutex_lock (&host->lock);
+ 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;
+} /* }}} int riemann_connect */
+
+/* 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);
+} /* }}} int riemann_disconnect */
+
+static int riemann_send_msg (struct riemann_host *host, const Msg *msg) /* {{{ */
+{
+ int status = 0;
+ u_char *buffer = NULL;
+ size_t buffer_len;
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;
}
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,
return -1;
}
- pthread_mutex_unlock (&host->lock);
sfree (buffer);
return 0;
-}
+} /* }}} int riemann_send_msg */
+
+static 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;
+} /* }}} int riemann_recv_ack */
+
+/**
+ * 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;
+} /* }}} int riemann_send */
static int riemann_event_add_tag (Event *event, char const *tag) /* {{{ */
{
return (strarray_add (&event->tags, &event->n_tags, tag));
} /* }}} int riemann_event_add_tag */
-static int riemann_event_add_attribute (Event *event, /* {{{ */
+static int riemann_event_add_attribute(Event *event, /* {{{ */
char const *key, char const *value)
{
Attribute **new_attributes;
return (0);
} /* }}} int riemann_event_add_attribute */
-static Msg *riemann_notification_to_protobuf (struct riemann_host *host, /* {{{ */
+static Msg *riemann_notification_to_protobuf(struct riemann_host *host, /* {{{ */
notification_t const *n)
{
Msg *msg;
return (msg);
} /* }}} Msg *riemann_notification_to_protobuf */
-static Event *riemann_value_to_protobuf (struct riemann_host const *host, /* {{{ */
+static Event *riemann_value_to_protobuf(struct riemann_host const *host, /* {{{ */
data_set_t const *ds,
value_list_t const *vl, size_t index,
gauge_t const *rates)
return (event);
} /* }}} Event *riemann_value_to_protobuf */
-static Msg *riemann_value_list_to_protobuf (struct riemann_host const *host, /* {{{ */
+static Msg *riemann_value_list_to_protobuf(struct riemann_host const *host, /* {{{ */
data_set_t const *ds,
value_list_t const *vl)
{
return (msg);
} /* }}} Msg *riemann_value_list_to_protobuf */
-static int
-riemann_notification(const notification_t *n, user_data_t *ud)
+static int riemann_notification(const notification_t *n, user_data_t *ud) /* {{{ */
{
int status;
struct riemann_host *host = ud->data;
return (status);
} /* }}} int riemann_notification */
-static int
-riemann_write(const data_set_t *ds,
+static int riemann_write(const data_set_t *ds, /* {{{ */
const value_list_t *vl,
user_data_t *ud)
{
riemann_msg_protobuf_free (msg);
return status;
-}
+} /* }}} int riemann_write */
-/* 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)
+static void riemann_free(void *p) /* {{{ */
{
struct riemann_host *host = p;
sfree(host->service);
pthread_mutex_destroy (&host->lock);
sfree(host);
-}
+} /* }}} void riemann_free */
-static int
-riemann_config_node(oconfig_item_t *ci)
+static int riemann_config_node(oconfig_item_t *ci) /* {{{ */
{
struct riemann_host *host = NULL;
int status = 0;
pthread_mutex_unlock (&host->lock);
return status;
-}
+} /* }}} int riemann_config_node */
-static int
-riemann_config(oconfig_item_t *ci)
+static int riemann_config(oconfig_item_t *ci) /* {{{ */
{
int i;
oconfig_item_t *child;
}
}
return (0);
-}
+} /* }}} int riemann_config */
-void
-module_register(void)
+void module_register(void)
{
plugin_register_complex_config ("write_riemann", riemann_config);
}
projects / collectd.git / blobdiff