2 * collectd - src/gmond.c
3 * Copyright (C) 2009-2015 Florian octo Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
31 #include "configfile.h"
32 #include "utils_avltree.h"
38 # include <netinet/in.h>
41 # include <arpa/inet.h>
47 #include <gm_protocol.h>
49 #ifndef IPV6_ADD_MEMBERSHIP
50 # ifdef IPV6_JOIN_GROUP
51 # define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
53 # error "Neither IP_ADD_MEMBERSHIP nor IPV6_JOIN_GROUP is defined"
55 #endif /* !IP_ADD_MEMBERSHIP */
57 #ifdef GANGLIA_MAX_MESSAGE_LEN
58 # define BUFF_SIZE GANGLIA_MAX_MESSAGE_LEN
60 # define BUFF_SIZE 1400
66 struct sockaddr_storage addr;
69 typedef struct socket_entry_s socket_entry_t;
71 struct staging_entry_s
73 char key[2 * DATA_MAX_NAME_LEN];
77 typedef struct staging_entry_s staging_entry_t;
88 typedef struct metric_map_s metric_map_t;
90 #define MC_RECEIVE_GROUP_DEFAULT "239.2.11.71"
91 static char *mc_receive_group = NULL;
92 #define MC_RECEIVE_PORT_DEFAULT "8649"
93 static char *mc_receive_port = NULL;
95 static struct pollfd *mc_receive_sockets = NULL;
96 static size_t mc_receive_sockets_num = 0;
98 static socket_entry_t *mc_send_sockets = NULL;
99 static size_t mc_send_sockets_num = 0;
100 static pthread_mutex_t mc_send_sockets_lock = PTHREAD_MUTEX_INITIALIZER;
102 static int mc_receive_thread_loop = 0;
103 static int mc_receive_thread_running = 0;
104 static pthread_t mc_receive_thread_id;
106 static metric_map_t metric_map_default[] =
107 { /*---------------+-------------+-----------+-------------+------+-----*
108 * ganglia_name ! type ! type_inst ! data_source ! type ! idx *
109 *---------------+-------------+-----------+-------------+------+-----*/
110 { "load_one", "load", "", "shortterm", -1, -1 },
111 { "load_five", "load", "", "midterm", -1, -1 },
112 { "load_fifteen", "load", "", "longterm", -1, -1 },
113 { "cpu_user", "cpu", "user", "value", -1, -1 },
114 { "cpu_system", "cpu", "system", "value", -1, -1 },
115 { "cpu_idle", "cpu", "idle", "value", -1, -1 },
116 { "cpu_nice", "cpu", "nice", "value", -1, -1 },
117 { "cpu_wio", "cpu", "wait", "value", -1, -1 },
118 { "mem_free", "memory", "free", "value", -1, -1 },
119 { "mem_shared", "memory", "shared", "value", -1, -1 },
120 { "mem_buffers", "memory", "buffered", "value", -1, -1 },
121 { "mem_cached", "memory", "cached", "value", -1, -1 },
122 { "mem_total", "memory", "total", "value", -1, -1 },
123 { "bytes_in", "if_octets", "", "rx", -1, -1 },
124 { "bytes_out", "if_octets", "", "tx", -1, -1 },
125 { "pkts_in", "if_packets", "", "rx", -1, -1 },
126 { "pkts_out", "if_packets", "", "tx", -1, -1 }
128 static size_t metric_map_len_default = STATIC_ARRAY_SIZE (metric_map_default);
130 static metric_map_t *metric_map = NULL;
131 static size_t metric_map_len = 0;
133 static c_avl_tree_t *staging_tree;
134 static pthread_mutex_t staging_lock = PTHREAD_MUTEX_INITIALIZER;
136 static metric_map_t *metric_lookup (const char *key) /* {{{ */
142 /* Search the user-supplied table first.. */
144 map_len = metric_map_len;
145 for (i = 0; i < map_len; i++)
146 if (strcmp (map[i].ganglia_name, key) == 0)
149 /* .. and fall back to the built-in table if nothing is found. */
152 map = metric_map_default;
153 map_len = metric_map_len_default;
155 for (i = 0; i < map_len; i++)
156 if (strcmp (map[i].ganglia_name, key) == 0)
163 /* Look up the DS type and ds_index. */
164 if (map[i].ds_type < 0) /* {{{ */
166 const data_set_t *ds;
168 ds = plugin_get_ds (map[i].type);
171 WARNING ("gmond plugin: Type not defined: %s", map[i].type);
175 if ((map[i].ds_name == NULL) && (ds->ds_num != 1))
177 WARNING ("gmond plugin: No data source name defined for metric %s, "
178 "but type %s has more than one data source.",
179 map[i].ganglia_name, map[i].type);
183 if (map[i].ds_name == NULL)
191 for (j = 0; j < ds->ds_num; j++)
192 if (strcasecmp (ds->ds[j].name, map[i].ds_name) == 0)
197 WARNING ("gmond plugin: There is no data source "
198 "named `%s' in type `%s'.",
199 map[i].ds_name, ds->type);
205 map[i].ds_type = ds->ds[map[i].ds_index].type;
206 } /* }}} if ((map[i].ds_type < 0) || (map[i].ds_index < 0)) */
209 } /* }}} metric_map_t *metric_lookup */
211 static int create_sockets (socket_entry_t **ret_sockets, /* {{{ */
212 size_t *ret_sockets_num,
213 const char *node, const char *service, int listen)
215 struct addrinfo *ai_list;
216 struct addrinfo *ai_ptr;
219 socket_entry_t *sockets = NULL;
220 size_t sockets_num = 0;
224 if (*ret_sockets != NULL)
227 struct addrinfo ai_hints = {
228 .ai_family = AF_UNSPEC,
229 .ai_flags = AI_ADDRCONFIG | AI_PASSIVE,
230 .ai_protocol = IPPROTO_UDP,
231 .ai_socktype = SOCK_DGRAM
234 ai_return = getaddrinfo (node, service, &ai_hints, &ai_list);
238 ERROR ("gmond plugin: getaddrinfo (%s, %s) failed: %s",
239 (node == NULL) ? "(null)" : node,
240 (service == NULL) ? "(null)" : service,
241 (ai_return == EAI_SYSTEM)
242 ? sstrerror (errno, errbuf, sizeof (errbuf))
243 : gai_strerror (ai_return));
247 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) /* {{{ */
251 tmp = realloc (sockets, (sockets_num + 1) * sizeof (*sockets));
254 ERROR ("gmond plugin: realloc failed.");
259 sockets[sockets_num].fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype,
260 ai_ptr->ai_protocol);
261 if (sockets[sockets_num].fd < 0)
264 ERROR ("gmond plugin: socket failed: %s",
265 sstrerror (errno, errbuf, sizeof (errbuf)));
269 assert (sizeof (sockets[sockets_num].addr) >= ai_ptr->ai_addrlen);
270 memcpy (&sockets[sockets_num].addr, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
271 sockets[sockets_num].addrlen = ai_ptr->ai_addrlen;
273 /* Sending socket: Open only one socket and don't bind it. */
283 status = setsockopt (sockets[sockets_num].fd, SOL_SOCKET, SO_REUSEADDR,
284 (void *) &yes, sizeof (yes));
288 WARNING ("gmond plugin: setsockopt(2) failed: %s",
289 sstrerror (errno, errbuf, sizeof (errbuf)));
293 status = bind (sockets[sockets_num].fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
297 ERROR ("gmond plugin: bind failed: %s",
298 sstrerror (errno, errbuf, sizeof (errbuf)));
299 close (sockets[sockets_num].fd);
303 if (ai_ptr->ai_family == AF_INET)
305 struct sockaddr_in *addr;
308 addr = (struct sockaddr_in *) ai_ptr->ai_addr;
310 if (!IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
317 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IP, IP_MULTICAST_LOOP,
318 (void *) &loop, sizeof (loop));
322 WARNING ("gmond plugin: setsockopt(2) failed: %s",
323 sstrerror (errno, errbuf, sizeof (errbuf)));
326 struct ip_mreq mreq = {
327 .imr_multiaddr.s_addr = addr->sin_addr.s_addr,
328 .imr_interface.s_addr = htonl (INADDR_ANY)
331 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
332 (void *) &mreq, sizeof (mreq));
336 WARNING ("gmond plugin: setsockopt(2) failed: %s",
337 sstrerror (errno, errbuf, sizeof (errbuf)));
339 } /* if (ai_ptr->ai_family == AF_INET) */
340 else if (ai_ptr->ai_family == AF_INET6)
342 struct sockaddr_in6 *addr;
345 addr = (struct sockaddr_in6 *) ai_ptr->ai_addr;
347 if (!IN6_IS_ADDR_MULTICAST (&addr->sin6_addr))
354 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
355 (void *) &loop, sizeof (loop));
359 WARNING ("gmond plugin: setsockopt(2) failed: %s",
360 sstrerror (errno, errbuf, sizeof (errbuf)));
363 struct ipv6_mreq mreq = {
364 .ipv6mr_interface = 0 /* any */
367 memcpy (&mreq.ipv6mr_multiaddr,
368 &addr->sin6_addr, sizeof (addr->sin6_addr));
369 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP,
370 (void *) &mreq, sizeof (mreq));
374 WARNING ("gmond plugin: setsockopt(2) failed: %s",
375 sstrerror (errno, errbuf, sizeof (errbuf)));
377 } /* if (ai_ptr->ai_family == AF_INET6) */
380 } /* }}} for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) */
382 freeaddrinfo (ai_list);
384 if (sockets_num == 0)
390 *ret_sockets = sockets;
391 *ret_sockets_num = sockets_num;
393 } /* }}} int create_sockets */
395 static int request_meta_data (const char *host, const char *name) /* {{{ */
397 Ganglia_metadata_msg msg = { 0 };
398 char buffer[BUFF_SIZE] = { 0 };
399 unsigned int buffer_size;
403 msg.id = gmetadata_request;
404 msg.Ganglia_metadata_msg_u.grequest.metric_id.host = strdup (host);
405 msg.Ganglia_metadata_msg_u.grequest.metric_id.name = strdup (name);
407 if ((msg.Ganglia_metadata_msg_u.grequest.metric_id.host == NULL)
408 || (msg.Ganglia_metadata_msg_u.grequest.metric_id.name == NULL))
410 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);
411 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name);
415 xdrmem_create (&xdr, buffer, sizeof (buffer), XDR_ENCODE);
417 if (!xdr_Ganglia_metadata_msg (&xdr, &msg))
419 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);
420 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name);
424 buffer_size = xdr_getpos (&xdr);
426 DEBUG ("gmond plugin: Requesting meta data for %s/%s.",
429 pthread_mutex_lock (&mc_send_sockets_lock);
430 for (i = 0; i < mc_send_sockets_num; i++)
432 ssize_t status = sendto (mc_send_sockets[i].fd, buffer, (size_t) buffer_size,
434 (struct sockaddr *) &mc_send_sockets[i].addr,
435 mc_send_sockets[i].addrlen);
439 ERROR ("gmond plugin: sendto(2) failed: %s",
440 sstrerror (errno, errbuf, sizeof (errbuf)));
444 pthread_mutex_unlock (&mc_send_sockets_lock);
446 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);
447 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name);
449 } /* }}} int request_meta_data */
451 static staging_entry_t *staging_entry_get (const char *host, /* {{{ */
453 const char *type, const char *type_instance,
456 char key[2 * DATA_MAX_NAME_LEN];
460 if (staging_tree == NULL)
463 ssnprintf (key, sizeof (key), "%s/%s/%s", host, type,
464 (type_instance != NULL) ? type_instance : "");
467 status = c_avl_get (staging_tree, key, (void *) &se);
471 /* insert new entry */
472 se = calloc (1, sizeof (*se));
476 sstrncpy (se->key, key, sizeof (se->key));
479 se->vl.values = (value_t *) calloc (values_len, sizeof (*se->vl.values));
480 if (se->vl.values == NULL)
485 se->vl.values_len = values_len;
489 sstrncpy (se->vl.host, host, sizeof (se->vl.host));
490 sstrncpy (se->vl.plugin, "gmond", sizeof (se->vl.plugin));
491 sstrncpy (se->vl.type, type, sizeof (se->vl.type));
492 if (type_instance != NULL)
493 sstrncpy (se->vl.type_instance, type_instance,
494 sizeof (se->vl.type_instance));
496 status = c_avl_insert (staging_tree, se->key, se);
499 ERROR ("gmond plugin: c_avl_insert failed.");
500 sfree (se->vl.values);
506 } /* }}} staging_entry_t *staging_entry_get */
508 static int staging_entry_update (const char *host, const char *name, /* {{{ */
509 const char *type, const char *type_instance,
510 size_t ds_index, int ds_type, value_t value)
512 const data_set_t *ds;
515 ds = plugin_get_ds (type);
518 ERROR ("gmond plugin: Looking up type %s failed.", type);
522 if (ds->ds_num <= ds_index)
524 ERROR ("gmond plugin: Invalid index %zu: %s has only %zu data source(s).",
525 ds_index, ds->type, ds->ds_num);
529 pthread_mutex_lock (&staging_lock);
531 se = staging_entry_get (host, name, type, type_instance, ds->ds_num);
534 pthread_mutex_unlock (&staging_lock);
535 ERROR ("gmond plugin: staging_entry_get failed.");
538 if (se->vl.values_len != ds->ds_num)
540 pthread_mutex_unlock (&staging_lock);
544 if (ds_type == DS_TYPE_COUNTER)
545 se->vl.values[ds_index].counter += value.counter;
546 else if (ds_type == DS_TYPE_GAUGE)
547 se->vl.values[ds_index].gauge = value.gauge;
548 else if (ds_type == DS_TYPE_DERIVE)
549 se->vl.values[ds_index].derive += value.derive;
550 else if (ds_type == DS_TYPE_ABSOLUTE)
551 se->vl.values[ds_index].absolute = value.absolute;
555 se->flags |= (0x01 << ds_index);
557 /* Check if all data sources have been set. If not, return here. */
558 if (se->flags != ((0x01 << se->vl.values_len) - 1))
560 pthread_mutex_unlock (&staging_lock);
564 /* Check if the interval of this metric is known. If not, request meta data
566 if (se->vl.interval == 0)
568 /* No meta data has been received for this metric yet. */
570 pthread_mutex_unlock (&staging_lock);
572 request_meta_data (host, name);
576 plugin_dispatch_values (&se->vl);
579 pthread_mutex_unlock (&staging_lock);
582 } /* }}} int staging_entry_update */
584 static int mc_handle_value_msg (Ganglia_value_msg *msg) /* {{{ */
590 value_t value_counter;
592 value_t value_derive;
594 /* Fill in `host', `name', `value_counter', and `value_gauge' according to
595 * the value type, or return with an error. */
596 switch (msg->id) /* {{{ */
600 Ganglia_gmetric_uint msg_uint;
602 msg_uint = msg->Ganglia_value_msg_u.gu_int;
604 host = msg_uint.metric_id.host;
605 name = msg_uint.metric_id.name;
606 value_counter.counter = (counter_t) msg_uint.ui;
607 value_gauge.gauge = (gauge_t) msg_uint.ui;
608 value_derive.derive = (derive_t) msg_uint.ui;
614 Ganglia_gmetric_string msg_string;
617 msg_string = msg->Ganglia_value_msg_u.gstr;
619 host = msg_string.metric_id.host;
620 name = msg_string.metric_id.name;
622 status = parse_value (msg_string.str, &value_derive, DS_TYPE_DERIVE);
624 value_derive.derive = -1;
626 status = parse_value (msg_string.str, &value_gauge, DS_TYPE_GAUGE);
628 value_gauge.gauge = NAN;
630 status = parse_value (msg_string.str, &value_counter, DS_TYPE_COUNTER);
632 value_counter.counter = 0;
639 Ganglia_gmetric_float msg_float;
641 msg_float = msg->Ganglia_value_msg_u.gf;
643 host = msg_float.metric_id.host;
644 name = msg_float.metric_id.name;
645 value_counter.counter = (counter_t) msg_float.f;
646 value_gauge.gauge = (gauge_t) msg_float.f;
647 value_derive.derive = (derive_t) msg_float.f;
653 Ganglia_gmetric_double msg_double;
655 msg_double = msg->Ganglia_value_msg_u.gd;
657 host = msg_double.metric_id.host;
658 name = msg_double.metric_id.name;
659 value_counter.counter = (counter_t) msg_double.d;
660 value_gauge.gauge = (gauge_t) msg_double.d;
661 value_derive.derive = (derive_t) msg_double.d;
665 DEBUG ("gmond plugin: Value type not handled: %i", msg->id);
667 } /* }}} switch (msg->id) */
669 assert (host != NULL);
670 assert (name != NULL);
672 map = metric_lookup (name);
677 if ((map->ds_type == DS_TYPE_COUNTER)
678 || (map->ds_type == DS_TYPE_ABSOLUTE))
679 val_copy = value_counter;
680 else if (map->ds_type == DS_TYPE_GAUGE)
681 val_copy = value_gauge;
682 else if (map->ds_type == DS_TYPE_DERIVE)
683 val_copy = value_derive;
687 return (staging_entry_update (host, name,
688 map->type, map->type_instance,
689 map->ds_index, map->ds_type,
693 DEBUG ("gmond plugin: Cannot find a translation for %s.", name);
695 } /* }}} int mc_handle_value_msg */
697 static int mc_handle_metadata_msg (Ganglia_metadata_msg *msg) /* {{{ */
703 Ganglia_metadatadef msg_meta;
705 const data_set_t *ds;
708 msg_meta = msg->Ganglia_metadata_msg_u.gfull;
710 if (msg_meta.metric.tmax == 0)
713 map = metric_lookup (msg_meta.metric_id.name);
716 DEBUG ("gmond plugin: Not handling meta data %s.",
717 msg_meta.metric_id.name);
721 ds = plugin_get_ds (map->type);
724 WARNING ("gmond plugin: Could not find data set %s.", map->type);
728 DEBUG ("gmond plugin: Received meta data for %s/%s.",
729 msg_meta.metric_id.host, msg_meta.metric_id.name);
731 pthread_mutex_lock (&staging_lock);
732 se = staging_entry_get (msg_meta.metric_id.host,
733 msg_meta.metric_id.name,
734 map->type, map->type_instance,
737 se->vl.interval = TIME_T_TO_CDTIME_T (msg_meta.metric.tmax);
738 pthread_mutex_unlock (&staging_lock);
742 ERROR ("gmond plugin: staging_entry_get failed.");
756 } /* }}} int mc_handle_metadata_msg */
758 static int mc_handle_metric (void *buffer, size_t buffer_size) /* {{{ */
761 Ganglia_msg_formats format;
763 xdrmem_create (&xdr, buffer, buffer_size, XDR_DECODE);
765 xdr_Ganglia_msg_formats (&xdr, &format);
766 xdr_setpos (&xdr, 0);
778 Ganglia_value_msg msg = { 0 };
780 if (xdr_Ganglia_value_msg (&xdr, &msg))
781 mc_handle_value_msg (&msg);
786 case gmetadata_request:
788 Ganglia_metadata_msg msg = { 0 };
789 if (xdr_Ganglia_metadata_msg (&xdr, &msg))
790 mc_handle_metadata_msg (&msg);
795 DEBUG ("gmond plugin: Unknown format: %i", format);
797 } /* switch (format) */
801 } /* }}} int mc_handle_metric */
803 static int mc_handle_socket (struct pollfd *p) /* {{{ */
805 char buffer[BUFF_SIZE];
808 if ((p->revents & (POLLIN | POLLPRI)) == 0)
814 buffer_size = recv (p->fd, buffer, sizeof (buffer), /* flags = */ 0);
815 if (buffer_size <= 0)
818 ERROR ("gmond plugin: recv failed: %s",
819 sstrerror (errno, errbuf, sizeof (errbuf)));
824 mc_handle_metric (buffer, (size_t) buffer_size);
826 } /* }}} int mc_handle_socket */
828 static void *mc_receive_thread (void *arg) /* {{{ */
830 socket_entry_t *mc_receive_socket_entries;
834 mc_receive_socket_entries = NULL;
835 status = create_sockets (&mc_receive_socket_entries, &mc_receive_sockets_num,
836 (mc_receive_group != NULL) ? mc_receive_group : MC_RECEIVE_GROUP_DEFAULT,
837 (mc_receive_port != NULL) ? mc_receive_port : MC_RECEIVE_PORT_DEFAULT,
841 ERROR ("gmond plugin: create_sockets failed.");
842 return ((void *) -1);
845 mc_receive_sockets = (struct pollfd *) calloc (mc_receive_sockets_num,
846 sizeof (*mc_receive_sockets));
847 if (mc_receive_sockets == NULL)
849 ERROR ("gmond plugin: calloc failed.");
850 for (i = 0; i < mc_receive_sockets_num; i++)
851 close (mc_receive_socket_entries[i].fd);
852 free (mc_receive_socket_entries);
853 mc_receive_socket_entries = NULL;
854 mc_receive_sockets_num = 0;
855 return ((void *) -1);
858 for (i = 0; i < mc_receive_sockets_num; i++)
860 mc_receive_sockets[i].fd = mc_receive_socket_entries[i].fd;
861 mc_receive_sockets[i].events = POLLIN | POLLPRI;
862 mc_receive_sockets[i].revents = 0;
865 while (mc_receive_thread_loop != 0)
867 status = poll (mc_receive_sockets, mc_receive_sockets_num, -1);
873 ERROR ("gmond plugin: poll failed: %s",
874 sstrerror (errno, errbuf, sizeof (errbuf)));
878 for (i = 0; i < mc_receive_sockets_num; i++)
880 if (mc_receive_sockets[i].revents != 0)
881 mc_handle_socket (mc_receive_sockets + i);
883 } /* while (mc_receive_thread_loop != 0) */
885 free (mc_receive_socket_entries);
887 } /* }}} void *mc_receive_thread */
889 static int mc_receive_thread_start (void) /* {{{ */
893 if (mc_receive_thread_running != 0)
896 mc_receive_thread_loop = 1;
898 status = plugin_thread_create (&mc_receive_thread_id, /* attr = */ NULL,
899 mc_receive_thread, /* args = */ NULL);
902 ERROR ("gmond plugin: Starting receive thread failed.");
903 mc_receive_thread_loop = 0;
907 mc_receive_thread_running = 1;
909 } /* }}} int start_receive_thread */
911 static int mc_receive_thread_stop (void) /* {{{ */
913 if (mc_receive_thread_running == 0)
916 mc_receive_thread_loop = 0;
918 INFO ("gmond plugin: Stopping receive thread.");
919 pthread_kill (mc_receive_thread_id, SIGTERM);
920 pthread_join (mc_receive_thread_id, /* return value = */ NULL);
921 memset (&mc_receive_thread_id, 0, sizeof (mc_receive_thread_id));
923 mc_receive_thread_running = 0;
926 } /* }}} int mc_receive_thread_stop */
932 * MCReceiveFrom "239.2.11.71" "8649"
933 * <Metric "load_one">
935 * [TypeInstance "foo"]
940 static int gmond_config_set_string (oconfig_item_t *ci, char **str) /* {{{ */
944 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
946 WARNING ("gmond plugin: The `%s' option needs "
947 "exactly one string argument.", ci->key);
951 tmp = strdup (ci->values[0].value.string);
954 ERROR ("gmond plugin: strdup failed.");
961 } /* }}} int gmond_config_set_string */
963 static int gmond_config_add_metric (oconfig_item_t *ci) /* {{{ */
968 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
970 WARNING ("gmond plugin: `Metric' blocks need "
971 "exactly one string argument.");
975 map = realloc (metric_map, (metric_map_len + 1) * sizeof (*metric_map));
978 ERROR ("gmond plugin: realloc failed.");
982 map = metric_map + metric_map_len;
984 memset (map, 0, sizeof (*map));
986 map->type_instance = NULL;
991 map->ganglia_name = strdup (ci->values[0].value.string);
992 if (map->ganglia_name == NULL)
994 ERROR ("gmond plugin: strdup failed.");
998 for (i = 0; i < ci->children_num; i++)
1000 oconfig_item_t *child = ci->children + i;
1001 if (strcasecmp ("Type", child->key) == 0)
1002 gmond_config_set_string (child, &map->type);
1003 else if (strcasecmp ("TypeInstance", child->key) == 0)
1004 gmond_config_set_string (child, &map->type_instance);
1005 else if (strcasecmp ("DataSource", child->key) == 0)
1006 gmond_config_set_string (child, &map->ds_name);
1009 WARNING ("gmond plugin: Unknown configuration option `%s' ignored.",
1014 if (map->type == NULL)
1016 ERROR ("gmond plugin: No type is set for metric %s.",
1018 sfree (map->ganglia_name);
1019 sfree (map->type_instance);
1025 } /* }}} int gmond_config_add_metric */
1027 static int gmond_config_set_address (oconfig_item_t *ci, /* {{{ */
1028 char **ret_addr, char **ret_port)
1033 if ((ci->values_num != 1) && (ci->values_num != 2))
1035 WARNING ("gmond plugin: The `%s' config option needs "
1036 "one or two string arguments.",
1040 if ((ci->values[0].type != OCONFIG_TYPE_STRING)
1041 || ((ci->values_num == 2)
1042 && (ci->values[1].type != OCONFIG_TYPE_STRING)))
1044 WARNING ("gmond plugin: The `%s' config option needs "
1045 "one or two string arguments.",
1050 addr = strdup (ci->values[0].value.string);
1051 if (ci->values_num == 2)
1052 port = strdup (ci->values[1].value.string);
1056 if ((addr == NULL) || ((ci->values_num == 2) && (port == NULL)))
1058 ERROR ("gmond plugin: strdup failed.");
1071 } /* }}} int gmond_config_set_address */
1073 static int gmond_config (oconfig_item_t *ci) /* {{{ */
1077 for (i = 0; i < ci->children_num; i++)
1079 oconfig_item_t *child = ci->children + i;
1080 if (strcasecmp ("MCReceiveFrom", child->key) == 0)
1081 gmond_config_set_address (child, &mc_receive_group, &mc_receive_port);
1082 else if (strcasecmp ("Metric", child->key) == 0)
1083 gmond_config_add_metric (child);
1086 WARNING ("gmond plugin: Unknown configuration option `%s' ignored.",
1092 } /* }}} int gmond_config */
1094 static int gmond_init (void) /* {{{ */
1096 create_sockets (&mc_send_sockets, &mc_send_sockets_num,
1097 (mc_receive_group != NULL) ? mc_receive_group : MC_RECEIVE_GROUP_DEFAULT,
1098 (mc_receive_port != NULL) ? mc_receive_port : MC_RECEIVE_PORT_DEFAULT,
1101 staging_tree = c_avl_create ((int (*) (const void *, const void *)) strcmp);
1102 if (staging_tree == NULL)
1104 ERROR ("gmond plugin: c_avl_create failed.");
1108 mc_receive_thread_start ();
1111 } /* }}} int gmond_init */
1113 static int gmond_shutdown (void) /* {{{ */
1117 mc_receive_thread_stop ();
1119 pthread_mutex_lock (&mc_send_sockets_lock);
1120 for (i = 0; i < mc_send_sockets_num; i++)
1122 close (mc_send_sockets[i].fd);
1123 mc_send_sockets[i].fd = -1;
1125 sfree (mc_send_sockets);
1126 mc_send_sockets_num = 0;
1127 pthread_mutex_unlock (&mc_send_sockets_lock);
1131 } /* }}} int gmond_shutdown */
1133 void module_register (void)
1135 plugin_register_complex_config ("gmond", gmond_config);
1136 plugin_register_init ("gmond", gmond_init);
1137 plugin_register_shutdown ("gmond", gmond_shutdown);
1140 /* vim: set sw=2 sts=2 et fdm=marker : */