2 * collectd - src/amqp.c
3 * Copyright (C) 2009 Sebastien Pahl
4 * Copyright (C) 2010-2012 Florian Forster
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Sebastien Pahl <sebastien.pahl at dotcloud.com>
26 * Florian Forster <octo at collectd.org>
33 #include "utils_cmd_putval.h"
34 #include "utils_format_graphite.h"
35 #include "utils_format_json.h"
38 #include <amqp_framing.h>
40 #ifdef HAVE_AMQP_TCP_SOCKET_H
41 #include <amqp_tcp_socket.h>
43 #ifdef HAVE_AMQP_SOCKET_H
44 #include <amqp_socket.h>
46 #ifdef HAVE_AMQP_TCP_SOCKET
47 #if defined HAVE_DECL_AMQP_SOCKET_CLOSE && !HAVE_DECL_AMQP_SOCKET_CLOSE
48 /* rabbitmq-c does not currently ship amqp_socket.h
49 * and, thus, does not define this function. */
50 int amqp_socket_close(amqp_socket_t *);
54 /* Defines for the delivery mode. I have no idea why they're not defined by the
56 #define CAMQP_DM_VOLATILE 1
57 #define CAMQP_DM_PERSISTENT 2
59 #define CAMQP_FORMAT_COMMAND 1
60 #define CAMQP_FORMAT_JSON 2
61 #define CAMQP_FORMAT_GRAPHITE 3
63 #define CAMQP_CHANNEL 1
68 struct camqp_config_s {
81 /* Number of seconds to wait before connection is retried */
82 int connection_retry_delay;
85 uint8_t delivery_mode;
88 /* publish & graphite format only */
92 unsigned int graphite_flags;
98 _Bool queue_auto_delete;
100 amqp_connection_state_t connection;
101 pthread_mutex_t lock;
103 typedef struct camqp_config_s camqp_config_t;
108 static const char *def_host = "localhost";
109 static const char *def_vhost = "/";
110 static const char *def_user = "guest";
111 static const char *def_password = "guest";
112 static const char *def_exchange = "amq.fanout";
114 static pthread_t *subscriber_threads = NULL;
115 static size_t subscriber_threads_num = 0;
116 static _Bool subscriber_threads_running = 1;
118 #define CONF(c, f) (((c)->f != NULL) ? (c)->f : def_##f)
123 static void camqp_close_connection(camqp_config_t *conf) /* {{{ */
127 if ((conf == NULL) || (conf->connection == NULL))
130 sockfd = amqp_get_sockfd(conf->connection);
131 amqp_channel_close(conf->connection, CAMQP_CHANNEL, AMQP_REPLY_SUCCESS);
132 amqp_connection_close(conf->connection, AMQP_REPLY_SUCCESS);
133 amqp_destroy_connection(conf->connection);
135 conf->connection = NULL;
136 } /* }}} void camqp_close_connection */
138 static void camqp_config_free(void *ptr) /* {{{ */
140 camqp_config_t *conf = ptr;
145 camqp_close_connection(conf);
151 sfree(conf->password);
152 sfree(conf->exchange);
153 sfree(conf->exchange_type);
155 sfree(conf->routing_key);
157 sfree(conf->postfix);
160 } /* }}} void camqp_config_free */
162 static char *camqp_bytes_cstring(amqp_bytes_t *in) /* {{{ */
166 if ((in == NULL) || (in->bytes == NULL))
169 ret = malloc(in->len + 1);
173 memcpy(ret, in->bytes, in->len);
177 } /* }}} char *camqp_bytes_cstring */
179 static _Bool camqp_is_error(camqp_config_t *conf) /* {{{ */
183 r = amqp_get_rpc_reply(conf->connection);
184 if (r.reply_type == AMQP_RESPONSE_NORMAL)
188 } /* }}} _Bool camqp_is_error */
190 static char *camqp_strerror(camqp_config_t *conf, /* {{{ */
191 char *buffer, size_t buffer_size) {
194 r = amqp_get_rpc_reply(conf->connection);
195 switch (r.reply_type) {
196 case AMQP_RESPONSE_NORMAL:
197 sstrncpy(buffer, "Success", buffer_size);
200 case AMQP_RESPONSE_NONE:
201 sstrncpy(buffer, "Missing RPC reply type", buffer_size);
204 case AMQP_RESPONSE_LIBRARY_EXCEPTION:
205 #if HAVE_AMQP_RPC_REPLY_T_LIBRARY_ERRNO
207 return (sstrerror(r.library_errno, buffer, buffer_size));
210 return (sstrerror(r.library_error, buffer, buffer_size));
213 sstrncpy(buffer, "End of stream", buffer_size);
216 case AMQP_RESPONSE_SERVER_EXCEPTION:
217 if (r.reply.id == AMQP_CONNECTION_CLOSE_METHOD) {
218 amqp_connection_close_t *m = r.reply.decoded;
219 char *tmp = camqp_bytes_cstring(&m->reply_text);
220 ssnprintf(buffer, buffer_size, "Server connection error %d: %s",
223 } else if (r.reply.id == AMQP_CHANNEL_CLOSE_METHOD) {
224 amqp_channel_close_t *m = r.reply.decoded;
225 char *tmp = camqp_bytes_cstring(&m->reply_text);
226 ssnprintf(buffer, buffer_size, "Server channel error %d: %s",
230 ssnprintf(buffer, buffer_size, "Server error method %#" PRIx32,
236 ssnprintf(buffer, buffer_size, "Unknown reply type %i", (int)r.reply_type);
240 } /* }}} char *camqp_strerror */
242 #if HAVE_AMQP_RPC_REPLY_T_LIBRARY_ERRNO
243 static int camqp_create_exchange(camqp_config_t *conf) /* {{{ */
245 amqp_exchange_declare_ok_t *ed_ret;
247 if (conf->exchange_type == NULL)
250 ed_ret = amqp_exchange_declare(
252 /* channel = */ CAMQP_CHANNEL,
253 /* exchange = */ amqp_cstring_bytes(conf->exchange),
254 /* type = */ amqp_cstring_bytes(conf->exchange_type),
257 /* auto_delete = */ 1,
258 /* arguments = */ AMQP_EMPTY_TABLE);
259 if ((ed_ret == NULL) && camqp_is_error(conf)) {
261 ERROR("amqp plugin: amqp_exchange_declare failed: %s",
262 camqp_strerror(conf, errbuf, sizeof(errbuf)));
263 camqp_close_connection(conf);
267 INFO("amqp plugin: Successfully created exchange \"%s\" "
269 conf->exchange, conf->exchange_type);
272 } /* }}} int camqp_create_exchange */
274 static int camqp_create_exchange(camqp_config_t *conf) /* {{{ */
276 amqp_exchange_declare_ok_t *ed_ret;
277 amqp_table_t argument_table;
278 struct amqp_table_entry_t_ argument_table_entries[1];
280 if (conf->exchange_type == NULL)
283 /* Valid arguments: "auto_delete", "internal" */
284 argument_table.num_entries = STATIC_ARRAY_SIZE(argument_table_entries);
285 argument_table.entries = argument_table_entries;
286 argument_table_entries[0].key = amqp_cstring_bytes("auto_delete");
287 argument_table_entries[0].value.kind = AMQP_FIELD_KIND_BOOLEAN;
288 argument_table_entries[0].value.value.boolean = 1;
290 ed_ret = amqp_exchange_declare(
292 /* channel = */ CAMQP_CHANNEL,
293 /* exchange = */ amqp_cstring_bytes(conf->exchange),
294 /* type = */ amqp_cstring_bytes(conf->exchange_type),
297 #if defined(AMQP_VERSION) && AMQP_VERSION >= 0x00060000
298 /* auto delete = */ 0,
301 /* arguments = */ argument_table);
302 if ((ed_ret == NULL) && camqp_is_error(conf)) {
304 ERROR("amqp plugin: amqp_exchange_declare failed: %s",
305 camqp_strerror(conf, errbuf, sizeof(errbuf)));
306 camqp_close_connection(conf);
310 INFO("amqp plugin: Successfully created exchange \"%s\" "
312 conf->exchange, conf->exchange_type);
315 } /* }}} int camqp_create_exchange */
318 static int camqp_setup_queue(camqp_config_t *conf) /* {{{ */
320 amqp_queue_declare_ok_t *qd_ret;
321 amqp_basic_consume_ok_t *cm_ret;
323 qd_ret = amqp_queue_declare(conf->connection,
324 /* channel = */ CAMQP_CHANNEL,
325 /* queue = */ (conf->queue != NULL)
326 ? amqp_cstring_bytes(conf->queue)
329 /* durable = */ conf->queue_durable,
331 /* auto_delete = */ conf->queue_auto_delete,
332 /* arguments = */ AMQP_EMPTY_TABLE);
333 if (qd_ret == NULL) {
334 ERROR("amqp plugin: amqp_queue_declare failed.");
335 camqp_close_connection(conf);
339 if (conf->queue == NULL) {
340 conf->queue = camqp_bytes_cstring(&qd_ret->queue);
341 if (conf->queue == NULL) {
342 ERROR("amqp plugin: camqp_bytes_cstring failed.");
343 camqp_close_connection(conf);
347 INFO("amqp plugin: Created queue \"%s\".", conf->queue);
349 DEBUG("amqp plugin: Successfully created queue \"%s\".", conf->queue);
351 /* bind to an exchange */
352 if (conf->exchange != NULL) {
353 amqp_queue_bind_ok_t *qb_ret;
355 assert(conf->queue != NULL);
357 amqp_queue_bind(conf->connection,
358 /* channel = */ CAMQP_CHANNEL,
359 /* queue = */ amqp_cstring_bytes(conf->queue),
360 /* exchange = */ amqp_cstring_bytes(conf->exchange),
361 /* routing_key = */ (conf->routing_key != NULL)
362 ? amqp_cstring_bytes(conf->routing_key)
364 /* arguments = */ AMQP_EMPTY_TABLE);
365 if ((qb_ret == NULL) && camqp_is_error(conf)) {
367 ERROR("amqp plugin: amqp_queue_bind failed: %s",
368 camqp_strerror(conf, errbuf, sizeof(errbuf)));
369 camqp_close_connection(conf);
373 DEBUG("amqp plugin: Successfully bound queue \"%s\" to exchange \"%s\".",
374 conf->queue, conf->exchange);
375 } /* if (conf->exchange != NULL) */
378 amqp_basic_consume(conf->connection,
379 /* channel = */ CAMQP_CHANNEL,
380 /* queue = */ amqp_cstring_bytes(conf->queue),
381 /* consumer_tag = */ AMQP_EMPTY_BYTES,
385 /* arguments = */ AMQP_EMPTY_TABLE);
386 if ((cm_ret == NULL) && camqp_is_error(conf)) {
388 ERROR("amqp plugin: amqp_basic_consume failed: %s",
389 camqp_strerror(conf, errbuf, sizeof(errbuf)));
390 camqp_close_connection(conf);
395 } /* }}} int camqp_setup_queue */
397 static int camqp_connect(camqp_config_t *conf) /* {{{ */
399 static time_t last_connect_time = 0;
401 amqp_rpc_reply_t reply;
403 #ifdef HAVE_AMQP_TCP_SOCKET
404 amqp_socket_t *socket;
409 if (conf->connection != NULL)
412 time_t now = time(NULL);
413 if (now < (last_connect_time + conf->connection_retry_delay)) {
414 DEBUG("amqp plugin: skipping connection retry, "
415 "ConnectionRetryDelay: %d",
416 conf->connection_retry_delay);
419 DEBUG("amqp plugin: retrying connection");
420 last_connect_time = now;
423 conf->connection = amqp_new_connection();
424 if (conf->connection == NULL) {
425 ERROR("amqp plugin: amqp_new_connection failed.");
429 #ifdef HAVE_AMQP_TCP_SOCKET
430 #define CLOSE_SOCKET() /* amqp_destroy_connection() closes the socket for us \
432 /* TODO: add support for SSL using amqp_ssl_socket_new
433 * and related functions */
434 socket = amqp_tcp_socket_new(conf->connection);
436 ERROR("amqp plugin: amqp_tcp_socket_new failed.");
437 amqp_destroy_connection(conf->connection);
438 conf->connection = NULL;
442 status = amqp_socket_open(socket, CONF(conf, host), conf->port);
446 ERROR("amqp plugin: amqp_socket_open failed: %s",
447 sstrerror(status, errbuf, sizeof(errbuf)));
448 amqp_destroy_connection(conf->connection);
449 conf->connection = NULL;
452 #else /* HAVE_AMQP_TCP_SOCKET */
453 #define CLOSE_SOCKET() close(sockfd)
454 /* this interface is deprecated as of rabbitmq-c 0.4 */
455 sockfd = amqp_open_socket(CONF(conf, host), conf->port);
458 status = (-1) * sockfd;
459 ERROR("amqp plugin: amqp_open_socket failed: %s",
460 sstrerror(status, errbuf, sizeof(errbuf)));
461 amqp_destroy_connection(conf->connection);
462 conf->connection = NULL;
465 amqp_set_sockfd(conf->connection, sockfd);
468 reply = amqp_login(conf->connection, CONF(conf, vhost),
469 /* channel max = */ 0,
470 /* frame max = */ 131072,
472 /* authentication = */ AMQP_SASL_METHOD_PLAIN,
473 CONF(conf, user), CONF(conf, password));
474 if (reply.reply_type != AMQP_RESPONSE_NORMAL) {
475 ERROR("amqp plugin: amqp_login (vhost = %s, user = %s) failed.",
476 CONF(conf, vhost), CONF(conf, user));
477 amqp_destroy_connection(conf->connection);
479 conf->connection = NULL;
483 amqp_channel_open(conf->connection, /* channel = */ 1);
484 /* FIXME: Is checking "reply.reply_type" really correct here? How does
485 * it get set? --octo */
486 if (reply.reply_type != AMQP_RESPONSE_NORMAL) {
487 ERROR("amqp plugin: amqp_channel_open failed.");
488 amqp_connection_close(conf->connection, AMQP_REPLY_SUCCESS);
489 amqp_destroy_connection(conf->connection);
491 conf->connection = NULL;
495 INFO("amqp plugin: Successfully opened connection to vhost \"%s\" "
497 CONF(conf, vhost), CONF(conf, host), conf->port);
499 status = camqp_create_exchange(conf);
504 return (camqp_setup_queue(conf));
506 } /* }}} int camqp_connect */
508 static int camqp_shutdown(void) /* {{{ */
510 DEBUG("amqp plugin: Shutting down %zu subscriber threads.",
511 subscriber_threads_num);
513 subscriber_threads_running = 0;
514 for (size_t i = 0; i < subscriber_threads_num; i++) {
515 /* FIXME: Sending a signal is not very elegant here. Maybe find out how
516 * to use a timeout in the thread and check for the variable in regular
518 pthread_kill(subscriber_threads[i], SIGTERM);
519 pthread_join(subscriber_threads[i], /* retval = */ NULL);
522 subscriber_threads_num = 0;
523 sfree(subscriber_threads);
525 DEBUG("amqp plugin: All subscriber threads exited.");
528 } /* }}} int camqp_shutdown */
533 static int camqp_read_body(camqp_config_t *conf, /* {{{ */
534 size_t body_size, const char *content_type) {
535 char body[body_size + 1];
541 memset(body, 0, sizeof(body));
545 while (received < body_size) {
546 status = amqp_simple_wait_frame(conf->connection, &frame);
549 status = (-1) * status;
550 ERROR("amqp plugin: amqp_simple_wait_frame failed: %s",
551 sstrerror(status, errbuf, sizeof(errbuf)));
552 camqp_close_connection(conf);
556 if (frame.frame_type != AMQP_FRAME_BODY) {
557 NOTICE("amqp plugin: Unexpected frame type: %#" PRIx8, frame.frame_type);
561 if ((body_size - received) < frame.payload.body_fragment.len) {
562 WARNING("amqp plugin: Body is larger than indicated by header.");
566 memcpy(body_ptr, frame.payload.body_fragment.bytes,
567 frame.payload.body_fragment.len);
568 body_ptr += frame.payload.body_fragment.len;
569 received += frame.payload.body_fragment.len;
570 } /* while (received < body_size) */
572 if (strcasecmp("text/collectd", content_type) == 0) {
573 status = cmd_handle_putval(stderr, body);
575 ERROR("amqp plugin: cmd_handle_putval failed with status %i.", status);
577 } else if (strcasecmp("application/json", content_type) == 0) {
578 ERROR("amqp plugin: camqp_read_body: Parsing JSON data has not "
579 "been implemented yet. FIXME!");
582 ERROR("amqp plugin: camqp_read_body: Unknown content type \"%s\".",
589 } /* }}} int camqp_read_body */
591 static int camqp_read_header(camqp_config_t *conf) /* {{{ */
595 amqp_basic_properties_t *properties;
598 status = amqp_simple_wait_frame(conf->connection, &frame);
601 status = (-1) * status;
602 ERROR("amqp plugin: amqp_simple_wait_frame failed: %s",
603 sstrerror(status, errbuf, sizeof(errbuf)));
604 camqp_close_connection(conf);
608 if (frame.frame_type != AMQP_FRAME_HEADER) {
609 NOTICE("amqp plugin: Unexpected frame type: %#" PRIx8, frame.frame_type);
613 properties = frame.payload.properties.decoded;
614 content_type = camqp_bytes_cstring(&properties->content_type);
615 if (content_type == NULL) {
616 ERROR("amqp plugin: Unable to determine content type.");
620 status = camqp_read_body(conf, (size_t)frame.payload.properties.body_size,
625 } /* }}} int camqp_read_header */
627 static void *camqp_subscribe_thread(void *user_data) /* {{{ */
629 camqp_config_t *conf = user_data;
632 cdtime_t interval = plugin_get_interval();
634 while (subscriber_threads_running) {
637 status = camqp_connect(conf);
639 ERROR("amqp plugin: camqp_connect failed. "
640 "Will sleep for %.3f seconds.",
641 CDTIME_T_TO_DOUBLE(interval));
642 nanosleep(&CDTIME_T_TO_TIMESPEC(interval), /* remaining = */ NULL);
646 status = amqp_simple_wait_frame(conf->connection, &frame);
648 ERROR("amqp plugin: amqp_simple_wait_frame failed. "
649 "Will sleep for %.3f seconds.",
650 CDTIME_T_TO_DOUBLE(interval));
651 camqp_close_connection(conf);
652 nanosleep(&CDTIME_T_TO_TIMESPEC(interval), /* remaining = */ NULL);
656 if (frame.frame_type != AMQP_FRAME_METHOD) {
657 DEBUG("amqp plugin: Unexpected frame type: %#" PRIx8, frame.frame_type);
661 if (frame.payload.method.id != AMQP_BASIC_DELIVER_METHOD) {
662 DEBUG("amqp plugin: Unexpected method id: %#" PRIx32,
663 frame.payload.method.id);
667 camqp_read_header(conf);
669 amqp_maybe_release_buffers(conf->connection);
670 } /* while (subscriber_threads_running) */
672 camqp_config_free(conf);
675 } /* }}} void *camqp_subscribe_thread */
677 static int camqp_subscribe_init(camqp_config_t *conf) /* {{{ */
682 tmp = realloc(subscriber_threads,
683 sizeof(*subscriber_threads) * (subscriber_threads_num + 1));
685 ERROR("amqp plugin: realloc failed.");
686 sfree(subscriber_threads);
689 subscriber_threads = tmp;
690 tmp = subscriber_threads + subscriber_threads_num;
691 memset(tmp, 0, sizeof(*tmp));
693 status = plugin_thread_create(tmp, /* attr = */ NULL, camqp_subscribe_thread,
694 conf, "amqp subscribe");
697 ERROR("amqp plugin: pthread_create failed: %s",
698 sstrerror(status, errbuf, sizeof(errbuf)));
702 subscriber_threads_num++;
705 } /* }}} int camqp_subscribe_init */
710 /* XXX: You must hold "conf->lock" when calling this function! */
711 static int camqp_write_locked(camqp_config_t *conf, /* {{{ */
712 const char *buffer, const char *routing_key) {
715 status = camqp_connect(conf);
719 amqp_basic_properties_t props = {._flags = AMQP_BASIC_CONTENT_TYPE_FLAG |
720 AMQP_BASIC_DELIVERY_MODE_FLAG |
721 AMQP_BASIC_APP_ID_FLAG,
722 .delivery_mode = conf->delivery_mode,
723 .app_id = amqp_cstring_bytes("collectd")};
725 if (conf->format == CAMQP_FORMAT_COMMAND)
726 props.content_type = amqp_cstring_bytes("text/collectd");
727 else if (conf->format == CAMQP_FORMAT_JSON)
728 props.content_type = amqp_cstring_bytes("application/json");
729 else if (conf->format == CAMQP_FORMAT_GRAPHITE)
730 props.content_type = amqp_cstring_bytes("text/graphite");
734 status = amqp_basic_publish(
736 /* channel = */ 1, amqp_cstring_bytes(CONF(conf, exchange)),
737 amqp_cstring_bytes(routing_key),
739 /* immediate = */ 0, &props, amqp_cstring_bytes(buffer));
741 ERROR("amqp plugin: amqp_basic_publish failed with status %i.", status);
742 camqp_close_connection(conf);
746 } /* }}} int camqp_write_locked */
748 static int camqp_write(const data_set_t *ds, const value_list_t *vl, /* {{{ */
749 user_data_t *user_data) {
750 camqp_config_t *conf = user_data->data;
751 char routing_key[6 * DATA_MAX_NAME_LEN];
755 if ((ds == NULL) || (vl == NULL) || (conf == NULL))
758 if (conf->routing_key != NULL) {
759 sstrncpy(routing_key, conf->routing_key, sizeof(routing_key));
761 ssnprintf(routing_key, sizeof(routing_key), "collectd/%s/%s/%s/%s/%s",
762 vl->host, vl->plugin, vl->plugin_instance, vl->type,
765 /* Switch slashes (the only character forbidden by collectd) and dots
766 * (the separation character used by AMQP). */
767 for (size_t i = 0; routing_key[i] != 0; i++) {
768 if (routing_key[i] == '.')
769 routing_key[i] = '/';
770 else if (routing_key[i] == '/')
771 routing_key[i] = '.';
775 if (conf->format == CAMQP_FORMAT_COMMAND) {
776 status = cmd_create_putval(buffer, sizeof(buffer), ds, vl);
778 ERROR("amqp plugin: cmd_create_putval failed with status %i.", status);
781 } else if (conf->format == CAMQP_FORMAT_JSON) {
782 size_t bfree = sizeof(buffer);
785 format_json_initialize(buffer, &bfill, &bfree);
786 format_json_value_list(buffer, &bfill, &bfree, ds, vl, conf->store_rates);
787 format_json_finalize(buffer, &bfill, &bfree);
788 } else if (conf->format == CAMQP_FORMAT_GRAPHITE) {
790 format_graphite(buffer, sizeof(buffer), ds, vl, conf->prefix,
791 conf->postfix, conf->escape_char, conf->graphite_flags);
793 ERROR("amqp plugin: format_graphite failed with status %i.", status);
797 ERROR("amqp plugin: Invalid format (%i).", conf->format);
801 pthread_mutex_lock(&conf->lock);
802 status = camqp_write_locked(conf, buffer, routing_key);
803 pthread_mutex_unlock(&conf->lock);
806 } /* }}} int camqp_write */
811 static int camqp_config_set_format(oconfig_item_t *ci, /* {{{ */
812 camqp_config_t *conf) {
817 status = cf_util_get_string(ci, &string);
821 assert(string != NULL);
822 if (strcasecmp("Command", string) == 0)
823 conf->format = CAMQP_FORMAT_COMMAND;
824 else if (strcasecmp("JSON", string) == 0)
825 conf->format = CAMQP_FORMAT_JSON;
826 else if (strcasecmp("Graphite", string) == 0)
827 conf->format = CAMQP_FORMAT_GRAPHITE;
829 WARNING("amqp plugin: Invalid format string: %s", string);
835 } /* }}} int config_set_string */
837 static int camqp_config_connection(oconfig_item_t *ci, /* {{{ */
839 camqp_config_t *conf;
842 conf = calloc(1, sizeof(*conf));
844 ERROR("amqp plugin: calloc failed.");
848 /* Initialize "conf" {{{ */
849 conf->publish = publish;
851 conf->format = CAMQP_FORMAT_COMMAND;
856 conf->password = NULL;
857 conf->exchange = NULL;
858 conf->routing_key = NULL;
859 conf->connection_retry_delay = 0;
862 conf->delivery_mode = CAMQP_DM_VOLATILE;
863 conf->store_rates = 0;
864 conf->graphite_flags = 0;
865 /* publish & graphite only */
867 conf->postfix = NULL;
868 conf->escape_char = '_';
870 conf->exchange_type = NULL;
872 conf->queue_durable = 0;
873 conf->queue_auto_delete = 1;
875 conf->connection = NULL;
876 pthread_mutex_init(&conf->lock, /* attr = */ NULL);
879 status = cf_util_get_string(ci, &conf->name);
885 for (int i = 0; i < ci->children_num; i++) {
886 oconfig_item_t *child = ci->children + i;
888 if (strcasecmp("Host", child->key) == 0)
889 status = cf_util_get_string(child, &conf->host);
890 else if (strcasecmp("Port", child->key) == 0) {
891 status = cf_util_get_port_number(child);
896 } else if (strcasecmp("VHost", child->key) == 0)
897 status = cf_util_get_string(child, &conf->vhost);
898 else if (strcasecmp("User", child->key) == 0)
899 status = cf_util_get_string(child, &conf->user);
900 else if (strcasecmp("Password", child->key) == 0)
901 status = cf_util_get_string(child, &conf->password);
902 else if (strcasecmp("Exchange", child->key) == 0)
903 status = cf_util_get_string(child, &conf->exchange);
904 else if ((strcasecmp("ExchangeType", child->key) == 0) && !publish)
905 status = cf_util_get_string(child, &conf->exchange_type);
906 else if ((strcasecmp("Queue", child->key) == 0) && !publish)
907 status = cf_util_get_string(child, &conf->queue);
908 else if ((strcasecmp("QueueDurable", child->key) == 0) && !publish)
909 status = cf_util_get_boolean(child, &conf->queue_durable);
910 else if ((strcasecmp("QueueAutoDelete", child->key) == 0) && !publish)
911 status = cf_util_get_boolean(child, &conf->queue_auto_delete);
912 else if (strcasecmp("RoutingKey", child->key) == 0)
913 status = cf_util_get_string(child, &conf->routing_key);
914 else if ((strcasecmp("Persistent", child->key) == 0) && publish) {
916 status = cf_util_get_boolean(child, &tmp);
918 conf->delivery_mode = CAMQP_DM_PERSISTENT;
920 conf->delivery_mode = CAMQP_DM_VOLATILE;
921 } else if ((strcasecmp("StoreRates", child->key) == 0) && publish) {
922 status = cf_util_get_boolean(child, &conf->store_rates);
923 (void)cf_util_get_flag(child, &conf->graphite_flags,
924 GRAPHITE_STORE_RATES);
925 } else if ((strcasecmp("Format", child->key) == 0) && publish)
926 status = camqp_config_set_format(child, conf);
927 else if ((strcasecmp("GraphiteSeparateInstances", child->key) == 0) &&
929 status = cf_util_get_flag(child, &conf->graphite_flags,
930 GRAPHITE_SEPARATE_INSTANCES);
931 else if ((strcasecmp("GraphiteAlwaysAppendDS", child->key) == 0) && publish)
932 status = cf_util_get_flag(child, &conf->graphite_flags,
933 GRAPHITE_ALWAYS_APPEND_DS);
934 else if ((strcasecmp("GraphitePreserveSeparator", child->key) == 0) &&
936 status = cf_util_get_flag(child, &conf->graphite_flags,
937 GRAPHITE_PRESERVE_SEPARATOR);
938 else if ((strcasecmp("GraphitePrefix", child->key) == 0) && publish)
939 status = cf_util_get_string(child, &conf->prefix);
940 else if ((strcasecmp("GraphitePostfix", child->key) == 0) && publish)
941 status = cf_util_get_string(child, &conf->postfix);
942 else if ((strcasecmp("GraphiteEscapeChar", child->key) == 0) && publish) {
943 char *tmp_buff = NULL;
944 status = cf_util_get_string(child, &tmp_buff);
945 if (strlen(tmp_buff) > 1)
946 WARNING("amqp plugin: The option \"GraphiteEscapeChar\" handles "
947 "only one character. Others will be ignored.");
948 conf->escape_char = tmp_buff[0];
950 } else if (strcasecmp("ConnectionRetryDelay", child->key) == 0)
951 status = cf_util_get_int(child, &conf->connection_retry_delay);
953 WARNING("amqp plugin: Ignoring unknown "
954 "configuration option \"%s\".",
959 } /* for (i = 0; i < ci->children_num; i++) */
961 if ((status == 0) && (conf->exchange == NULL)) {
962 if (conf->exchange_type != NULL)
963 WARNING("amqp plugin: The option \"ExchangeType\" was given "
964 "without the \"Exchange\" option. It will be ignored.");
966 if (!publish && (conf->routing_key != NULL))
967 WARNING("amqp plugin: The option \"RoutingKey\" was given "
968 "without the \"Exchange\" option. It will be ignored.");
972 camqp_config_free(conf);
976 if (conf->exchange != NULL) {
977 DEBUG("amqp plugin: camqp_config_connection: exchange = %s;",
983 ssnprintf(cbname, sizeof(cbname), "amqp/%s", conf->name);
985 status = plugin_register_write(
986 cbname, camqp_write, &(user_data_t){
987 .data = conf, .free_func = camqp_config_free,
990 camqp_config_free(conf);
994 status = camqp_subscribe_init(conf);
996 camqp_config_free(conf);
1002 } /* }}} int camqp_config_connection */
1004 static int camqp_config(oconfig_item_t *ci) /* {{{ */
1006 for (int i = 0; i < ci->children_num; i++) {
1007 oconfig_item_t *child = ci->children + i;
1009 if (strcasecmp("Publish", child->key) == 0)
1010 camqp_config_connection(child, /* publish = */ 1);
1011 else if (strcasecmp("Subscribe", child->key) == 0)
1012 camqp_config_connection(child, /* publish = */ 0);
1014 WARNING("amqp plugin: Ignoring unknown config option \"%s\".",
1016 } /* for (ci->children_num) */
1019 } /* }}} int camqp_config */
1021 void module_register(void) {
1022 plugin_register_complex_config("amqp", camqp_config);
1023 plugin_register_shutdown("amqp", camqp_shutdown);
1024 } /* void module_register */