/**
* collectd - src/amqp.c
- * Copyright (C) 2009 Sebastien Pahl
- * Copyright (C) 2010 Florian Forster
+ * Copyright (C) 2009 Sebastien Pahl
+ * Copyright (C) 2010-2012 Florian Forster
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* Florian Forster <octo at verplant.org>
**/
-#include <stdint.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <strings.h>
-#include <pthread.h>
-
#include "collectd.h"
#include "common.h"
#include "plugin.h"
#include "utils_cmd_putval.h"
#include "utils_format_json.h"
+#include "utils_format_graphite.h"
+
+#include <pthread.h>
#include <amqp.h>
#include <amqp_framing.h>
+#ifdef HAVE_AMQP_TCP_SOCKET_H
+# include <amqp_tcp_socket.h>
+#endif
+#ifdef HAVE_AMQP_SOCKET_H
+# include <amqp_socket.h>
+#endif
+#ifdef HAVE_AMQP_TCP_SOCKET
+#if defined HAVE_DECL_AMQP_SOCKET_CLOSE && !HAVE_DECL_AMQP_SOCKET_CLOSE
+/* rabbitmq-c does not currently ship amqp_socket.h
+ * and, thus, does not define this function. */
+int amqp_socket_close(amqp_socket_t *);
+#endif
+#endif
+
/* Defines for the delivery mode. I have no idea why they're not defined by the
* library.. */
#define CAMQP_DM_VOLATILE 1
#define CAMQP_DM_PERSISTENT 2
-#define CAMQP_FORMAT_COMMAND 1
-#define CAMQP_FORMAT_JSON 2
+#define CAMQP_FORMAT_COMMAND 1
+#define CAMQP_FORMAT_JSON 2
+#define CAMQP_FORMAT_GRAPHITE 3
#define CAMQP_CHANNEL 1
{
_Bool publish;
char *name;
- int format;
char *host;
int port;
char *password;
char *exchange;
- char *routingkey;
+ char *routing_key;
/* publish only */
uint8_t delivery_mode;
_Bool store_rates;
+ int format;
+ /* publish & graphite format only */
+ char *prefix;
+ char *postfix;
+ char escape_char;
+ unsigned int graphite_flags;
/* subscribe only */
char *exchange_type;
static const char *def_user = "guest";
static const char *def_password = "guest";
static const char *def_exchange = "amq.fanout";
-static const char *def_routingkey = "collectd";
static pthread_t *subscriber_threads = NULL;
static size_t subscriber_threads_num = 0;
sfree (conf->exchange);
sfree (conf->exchange_type);
sfree (conf->queue);
- sfree (conf->routingkey);
+ sfree (conf->routing_key);
+ sfree (conf->prefix);
+ sfree (conf->postfix);
+
sfree (conf);
} /* }}} void camqp_config_free */
break;
case AMQP_RESPONSE_LIBRARY_EXCEPTION:
+#if HAVE_AMQP_RPC_REPLY_T_LIBRARY_ERRNO
if (r.library_errno)
return (sstrerror (r.library_errno, buffer, buffer_size));
+#else
+ if (r.library_error)
+ return (sstrerror (r.library_error, buffer, buffer_size));
+#endif
else
sstrncpy (buffer, "End of stream", sizeof (buffer));
break;
return (buffer);
} /* }}} char *camqp_strerror */
+#if HAVE_AMQP_RPC_REPLY_T_LIBRARY_ERRNO
+static int camqp_create_exchange (camqp_config_t *conf) /* {{{ */
+{
+ amqp_exchange_declare_ok_t *ed_ret;
+
+ if (conf->exchange_type == NULL)
+ return (0);
+
+ ed_ret = amqp_exchange_declare (conf->connection,
+ /* channel = */ CAMQP_CHANNEL,
+ /* exchange = */ amqp_cstring_bytes (conf->exchange),
+ /* type = */ amqp_cstring_bytes (conf->exchange_type),
+ /* passive = */ 0,
+ /* durable = */ 0,
+ /* auto_delete = */ 1,
+ /* arguments = */ AMQP_EMPTY_TABLE);
+ if ((ed_ret == NULL) && camqp_is_error (conf))
+ {
+ char errbuf[1024];
+ ERROR ("amqp plugin: amqp_exchange_declare failed: %s",
+ camqp_strerror (conf, errbuf, sizeof (errbuf)));
+ camqp_close_connection (conf);
+ return (-1);
+ }
+
+ INFO ("amqp plugin: Successfully created exchange \"%s\" "
+ "with type \"%s\".",
+ conf->exchange, conf->exchange_type);
+
+ return (0);
+} /* }}} int camqp_create_exchange */
+#else
+static int camqp_create_exchange (camqp_config_t *conf) /* {{{ */
+{
+ amqp_exchange_declare_ok_t *ed_ret;
+ amqp_table_t argument_table;
+ struct amqp_table_entry_t_ argument_table_entries[1];
+
+ if (conf->exchange_type == NULL)
+ return (0);
+
+ /* Valid arguments: "auto_delete", "internal" */
+ argument_table.num_entries = STATIC_ARRAY_SIZE (argument_table_entries);
+ argument_table.entries = argument_table_entries;
+ argument_table_entries[0].key = amqp_cstring_bytes ("auto_delete");
+ argument_table_entries[0].value.kind = AMQP_FIELD_KIND_BOOLEAN;
+ argument_table_entries[0].value.value.boolean = 1;
+
+ ed_ret = amqp_exchange_declare (conf->connection,
+ /* channel = */ CAMQP_CHANNEL,
+ /* exchange = */ amqp_cstring_bytes (conf->exchange),
+ /* type = */ amqp_cstring_bytes (conf->exchange_type),
+ /* passive = */ 0,
+ /* durable = */ 0,
+ /* arguments = */ argument_table);
+ if ((ed_ret == NULL) && camqp_is_error (conf))
+ {
+ char errbuf[1024];
+ ERROR ("amqp plugin: amqp_exchange_declare failed: %s",
+ camqp_strerror (conf, errbuf, sizeof (errbuf)));
+ camqp_close_connection (conf);
+ return (-1);
+ }
+
+ INFO ("amqp plugin: Successfully created exchange \"%s\" "
+ "with type \"%s\".",
+ conf->exchange, conf->exchange_type);
+
+ return (0);
+} /* }}} int camqp_create_exchange */
+#endif
+
static int camqp_setup_queue (camqp_config_t *conf) /* {{{ */
{
amqp_queue_declare_ok_t *qd_ret;
{
amqp_queue_bind_ok_t *qb_ret;
- /* create the exchange */
- if (conf->exchange_type != NULL)
- {
- amqp_exchange_declare_ok_t *ed_ret;
-
- ed_ret = amqp_exchange_declare (conf->connection,
- /* channel = */ CAMQP_CHANNEL,
- /* exchange = */ amqp_cstring_bytes (conf->exchange),
- /* type = */ amqp_cstring_bytes (conf->exchange_type),
- /* passive = */ 0,
- /* durable = */ 0,
- /* auto_delete = */ 1,
- /* arguments = */ AMQP_EMPTY_TABLE);
- if ((ed_ret == NULL) && camqp_is_error (conf))
- {
- char errbuf[1024];
- ERROR ("amqp plugin: amqp_exchange_declare failed: %s",
- camqp_strerror (conf, errbuf, sizeof (errbuf)));
- camqp_close_connection (conf);
- return (-1);
- }
- }
-
- DEBUG ("amqp plugin: queue = %s; exchange = %s; routing_key = %s;",
- conf->queue, conf->exchange, CONF (conf, routingkey));
-
assert (conf->queue != NULL);
qb_ret = amqp_queue_bind (conf->connection,
/* channel = */ CAMQP_CHANNEL,
/* queue = */ amqp_cstring_bytes (conf->queue),
/* exchange = */ amqp_cstring_bytes (conf->exchange),
-#if 1
- /* routing_key = */ amqp_cstring_bytes (CONF (conf, routingkey)),
-#else
- /* routing_key = */ AMQP_EMPTY_BYTES,
-#endif
+ /* routing_key = */ (conf->routing_key != NULL)
+ ? amqp_cstring_bytes (conf->routing_key)
+ : AMQP_EMPTY_BYTES,
/* arguments = */ AMQP_EMPTY_TABLE);
if ((qb_ret == NULL) && camqp_is_error (conf))
{
/* consumer_tag = */ AMQP_EMPTY_BYTES,
/* no_local = */ 0,
/* no_ack = */ 1,
- /* exclusive = */ 0);
+ /* exclusive = */ 0,
+ /* arguments = */ AMQP_EMPTY_TABLE
+ );
if ((cm_ret == NULL) && camqp_is_error (conf))
{
char errbuf[1024];
static int camqp_connect (camqp_config_t *conf) /* {{{ */
{
amqp_rpc_reply_t reply;
- int sockfd;
int status;
+#ifdef HAVE_AMQP_TCP_SOCKET
+ amqp_socket_t *socket;
+#else
+ int sockfd;
+#endif
if (conf->connection != NULL)
return (0);
return (ENOMEM);
}
+#ifdef HAVE_AMQP_TCP_SOCKET
+# define CLOSE_SOCKET() amqp_socket_close (socket)
+ /* TODO: add support for SSL using amqp_ssl_socket_new
+ * and related functions */
+ socket = amqp_tcp_socket_new (conf->connection);
+ if (! socket)
+ {
+ ERROR ("amqp plugin: amqp_tcp_socket_new failed.");
+ amqp_destroy_connection (conf->connection);
+ conf->connection = NULL;
+ return (ENOMEM);
+ }
+
+ status = amqp_socket_open (socket, CONF(conf, host), conf->port);
+ if (status < 0)
+ {
+ char errbuf[1024];
+ status *= -1;
+ ERROR ("amqp plugin: amqp_socket_open failed: %s",
+ sstrerror (status, errbuf, sizeof (errbuf)));
+ CLOSE_SOCKET ();
+ amqp_destroy_connection (conf->connection);
+ conf->connection = NULL;
+ return (status);
+ }
+#else /* HAVE_AMQP_TCP_SOCKET */
+# define CLOSE_SOCKET() close(sockfd)
+ /* this interface is deprecated as of rabbitmq-c 0.4 */
sockfd = amqp_open_socket (CONF(conf, host), conf->port);
if (sockfd < 0)
{
return (status);
}
amqp_set_sockfd (conf->connection, sockfd);
+#endif
reply = amqp_login (conf->connection, CONF(conf, vhost),
/* channel max = */ 0,
ERROR ("amqp plugin: amqp_login (vhost = %s, user = %s) failed.",
CONF(conf, vhost), CONF(conf, user));
amqp_destroy_connection (conf->connection);
- close (sockfd);
+ CLOSE_SOCKET ();
conf->connection = NULL;
return (1);
}
ERROR ("amqp plugin: amqp_channel_open failed.");
amqp_connection_close (conf->connection, AMQP_REPLY_SUCCESS);
amqp_destroy_connection (conf->connection);
- close(sockfd);
+ CLOSE_SOCKET ();
conf->connection = NULL;
return (1);
}
INFO ("amqp plugin: Successfully opened connection to vhost \"%s\" "
"on %s:%i.", CONF(conf, vhost), CONF(conf, host), conf->port);
+ status = camqp_create_exchange (conf);
+ if (status != 0)
+ return (status);
+
if (!conf->publish)
return (camqp_setup_queue (conf));
return (0);
} /* }}} int camqp_connect */
-static int shutdown (void) /* {{{ */
+static int camqp_shutdown (void) /* {{{ */
{
size_t i;
DEBUG ("amqp plugin: All subscriber threads exited.");
return (0);
-} /* }}} int shutdown */
+} /* }}} int camqp_shutdown */
/*
* Subscribing code
*/
static int camqp_read_body (camqp_config_t *conf, /* {{{ */
- size_t body_size)
+ size_t body_size, const char *content_type)
{
char body[body_size + 1];
char *body_ptr;
received += frame.payload.body_fragment.len;
} /* while (received < body_size) */
- if (conf->format == CAMQP_FORMAT_COMMAND)
+ if (strcasecmp ("text/collectd", content_type) == 0)
{
status = handle_putval (stderr, body);
if (status != 0)
status);
return (status);
}
- else if (conf->format == CAMQP_FORMAT_JSON)
+ else if (strcasecmp ("application/json", content_type) == 0)
{
ERROR ("amqp plugin: camqp_read_body: Parsing JSON data has not "
"been implemented yet. FIXME!");
}
else
{
- ERROR ("amqp plugin: camqp_read_body: Unknown format option (%i).",
- conf->format);
+ ERROR ("amqp plugin: camqp_read_body: Unknown content type \"%s\".",
+ content_type);
return (EINVAL);
}
{
int status;
amqp_frame_t frame;
+ amqp_basic_properties_t *properties;
+ char *content_type;
status = amqp_simple_wait_frame (conf->connection, &frame);
if (status < 0)
return (-1);
}
- return (camqp_read_body (conf, frame.payload.properties.body_size));
+ properties = frame.payload.properties.decoded;
+ content_type = camqp_bytes_cstring (&properties->content_type);
+ if (content_type == NULL)
+ {
+ ERROR ("amqp plugin: Unable to determine content type.");
+ return (-1);
+ }
+
+ status = camqp_read_body (conf,
+ (size_t) frame.payload.properties.body_size,
+ content_type);
+
+ sfree (content_type);
+ return (status);
} /* }}} int camqp_read_header */
static void *camqp_subscribe_thread (void *user_data) /* {{{ */
camqp_config_t *conf = user_data;
int status;
+ cdtime_t interval = plugin_get_interval ();
+
while (subscriber_threads_running)
{
amqp_frame_t frame;
status = camqp_connect (conf);
if (status != 0)
{
+ struct timespec ts_interval;
ERROR ("amqp plugin: camqp_connect failed. "
- "Will sleep for %i seconds.", interval_g);
- sleep (interval_g);
+ "Will sleep for %.3f seconds.",
+ CDTIME_T_TO_DOUBLE (interval));
+ CDTIME_T_TO_TIMESPEC (interval, &ts_interval);
+ nanosleep (&ts_interval, /* remaining = */ NULL);
continue;
}
status = amqp_simple_wait_frame (conf->connection, &frame);
if (status < 0)
{
+ struct timespec ts_interval;
ERROR ("amqp plugin: amqp_simple_wait_frame failed. "
- "Will sleep for %i seconds.", interval_g);
+ "Will sleep for %.3f seconds.",
+ CDTIME_T_TO_DOUBLE (interval));
camqp_close_connection (conf);
- sleep (interval_g);
+ CDTIME_T_TO_TIMESPEC (interval, &ts_interval);
+ nanosleep (&ts_interval, /* remaining = */ NULL);
continue;
}
camqp_config_free (conf);
pthread_exit (NULL);
+ return (NULL);
} /* }}} void *camqp_subscribe_thread */
static int camqp_subscribe_init (camqp_config_t *conf) /* {{{ */
tmp = subscriber_threads + subscriber_threads_num;
memset (tmp, 0, sizeof (*tmp));
- status = pthread_create (tmp, /* attr = */ NULL,
+ status = plugin_thread_create (tmp, /* attr = */ NULL,
camqp_subscribe_thread, conf);
if (status != 0)
{
/*
* Publishing code
*/
+/* XXX: You must hold "conf->lock" when calling this function! */
static int camqp_write_locked (camqp_config_t *conf, /* {{{ */
- const char *buffer)
+ const char *buffer, const char *routing_key)
{
amqp_basic_properties_t props;
int status;
props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG
| AMQP_BASIC_DELIVERY_MODE_FLAG
| AMQP_BASIC_APP_ID_FLAG;
- props.content_type = amqp_cstring_bytes("application/json");
+ if (conf->format == CAMQP_FORMAT_COMMAND)
+ props.content_type = amqp_cstring_bytes("text/collectd");
+ else if (conf->format == CAMQP_FORMAT_JSON)
+ props.content_type = amqp_cstring_bytes("application/json");
+ else if (conf->format == CAMQP_FORMAT_GRAPHITE)
+ props.content_type = amqp_cstring_bytes("text/graphite");
+ else
+ assert (23 == 42);
props.delivery_mode = conf->delivery_mode;
props.app_id = amqp_cstring_bytes("collectd");
status = amqp_basic_publish(conf->connection,
/* channel = */ 1,
amqp_cstring_bytes(CONF(conf, exchange)),
- amqp_cstring_bytes(CONF(conf, routingkey)),
+ amqp_cstring_bytes (routing_key),
/* mandatory = */ 0,
/* immediate = */ 0,
&props,
user_data_t *user_data)
{
camqp_config_t *conf = user_data->data;
+ char routing_key[6 * DATA_MAX_NAME_LEN];
char buffer[4096];
- size_t bfree;
- size_t bfill;
int status;
if ((ds == NULL) || (vl == NULL) || (conf == NULL))
return (EINVAL);
memset (buffer, 0, sizeof (buffer));
- bfree = sizeof (buffer);
- bfill = 0;
+
+ if (conf->routing_key != NULL)
+ {
+ sstrncpy (routing_key, conf->routing_key, sizeof (routing_key));
+ }
+ else
+ {
+ size_t i;
+ ssnprintf (routing_key, sizeof (routing_key), "collectd/%s/%s/%s/%s/%s",
+ vl->host,
+ vl->plugin, vl->plugin_instance,
+ vl->type, vl->type_instance);
+
+ /* Switch slashes (the only character forbidden by collectd) and dots
+ * (the separation character used by AMQP). */
+ for (i = 0; routing_key[i] != 0; i++)
+ {
+ if (routing_key[i] == '.')
+ routing_key[i] = '/';
+ else if (routing_key[i] == '/')
+ routing_key[i] = '.';
+ }
+ }
if (conf->format == CAMQP_FORMAT_COMMAND)
{
}
else if (conf->format == CAMQP_FORMAT_JSON)
{
+ size_t bfree = sizeof (buffer);
+ size_t bfill = 0;
+
format_json_initialize (buffer, &bfill, &bfree);
format_json_value_list (buffer, &bfill, &bfree, ds, vl, conf->store_rates);
format_json_finalize (buffer, &bfill, &bfree);
}
+ else if (conf->format == CAMQP_FORMAT_GRAPHITE)
+ {
+ status = format_graphite (buffer, sizeof (buffer), ds, vl,
+ conf->prefix, conf->postfix, conf->escape_char,
+ conf->graphite_flags);
+ if (status != 0)
+ {
+ ERROR ("amqp plugin: format_graphite failed with status %i.",
+ status);
+ return (status);
+ }
+ }
else
{
ERROR ("amqp plugin: Invalid format (%i).", conf->format);
}
pthread_mutex_lock (&conf->lock);
- status = camqp_write_locked (conf, buffer);
+ status = camqp_write_locked (conf, buffer, routing_key);
pthread_mutex_unlock (&conf->lock);
return (status);
conf->format = CAMQP_FORMAT_COMMAND;
else if (strcasecmp ("JSON", string) == 0)
conf->format = CAMQP_FORMAT_JSON;
+ else if (strcasecmp ("Graphite", string) == 0)
+ conf->format = CAMQP_FORMAT_GRAPHITE;
else
{
WARNING ("amqp plugin: Invalid format string: %s",
conf->user = NULL;
conf->password = NULL;
conf->exchange = NULL;
- conf->routingkey = NULL;
+ conf->routing_key = NULL;
/* publish only */
conf->delivery_mode = CAMQP_DM_VOLATILE;
conf->store_rates = 0;
+ /* publish & graphite only */
+ conf->prefix = NULL;
+ conf->postfix = NULL;
+ conf->escape_char = '_';
/* subscribe only */
conf->exchange_type = NULL;
conf->queue = NULL;
{
oconfig_item_t *child = ci->children + i;
- if (strcasecmp ("Format", child->key) == 0)
- status = camqp_config_set_format (child, conf);
- else if (strcasecmp ("Host", child->key) == 0)
+ if (strcasecmp ("Host", child->key) == 0)
status = cf_util_get_string (child, &conf->host);
else if (strcasecmp ("Port", child->key) == 0)
{
else if ((strcasecmp ("Queue", child->key) == 0) && !publish)
status = cf_util_get_string (child, &conf->queue);
else if (strcasecmp ("RoutingKey", child->key) == 0)
- status = cf_util_get_string (child, &conf->routingkey);
+ status = cf_util_get_string (child, &conf->routing_key);
else if ((strcasecmp ("Persistent", child->key) == 0) && publish)
{
_Bool tmp = 0;
conf->delivery_mode = CAMQP_DM_VOLATILE;
}
else if ((strcasecmp ("StoreRates", child->key) == 0) && publish)
+ {
status = cf_util_get_boolean (child, &conf->store_rates);
+ (void) cf_util_get_flag (child, &conf->graphite_flags,
+ GRAPHITE_STORE_RATES);
+ }
+ else if ((strcasecmp ("Format", child->key) == 0) && publish)
+ status = camqp_config_set_format (child, conf);
+ else if ((strcasecmp ("GraphitePrefix", child->key) == 0) && publish)
+ status = cf_util_get_string (child, &conf->prefix);
+ else if ((strcasecmp ("GraphitePostfix", child->key) == 0) && publish)
+ status = cf_util_get_string (child, &conf->postfix);
+ else if ((strcasecmp ("GraphiteEscapeChar", child->key) == 0) && publish)
+ {
+ char *tmp_buff = NULL;
+ status = cf_util_get_string (child, &tmp_buff);
+ if (strlen (tmp_buff) > 1)
+ WARNING ("amqp plugin: The option \"GraphiteEscapeChar\" handles "
+ "only one character. Others will be ignored.");
+ conf->escape_char = tmp_buff[0];
+ sfree (tmp_buff);
+ }
else
WARNING ("amqp plugin: Ignoring unknown "
"configuration option \"%s\".", child->key);
break;
} /* for (i = 0; i < ci->children_num; i++) */
- if ((status == 0) && !publish && (conf->exchange == NULL))
+ if ((status == 0) && (conf->exchange == NULL))
{
- if (conf->routingkey != NULL)
- WARNING ("amqp plugin: The option \"RoutingKey\" was given "
- "without the \"Exchange\" option. It will be ignored.");
-
if (conf->exchange_type != NULL)
WARNING ("amqp plugin: The option \"ExchangeType\" was given "
"without the \"Exchange\" option. It will be ignored.");
+
+ if (!publish && (conf->routing_key != NULL))
+ WARNING ("amqp plugin: The option \"RoutingKey\" was given "
+ "without the \"Exchange\" option. It will be ignored.");
+
}
if (status != 0)
void module_register (void)
{
plugin_register_complex_config ("amqp", camqp_config);
- plugin_register_shutdown ("amqp", shutdown);
+ plugin_register_shutdown ("amqp", camqp_shutdown);
} /* void module_register */
/* vim: set sw=4 sts=4 et fdm=marker : */
projects / collectd.git / blobdiff