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_hints = { 0 };
216 struct addrinfo *ai_list;
217 struct addrinfo *ai_ptr;
220 socket_entry_t *sockets = NULL;
221 size_t sockets_num = 0;
225 if (*ret_sockets != NULL)
229 ai_hints.ai_flags |= AI_PASSIVE;
232 ai_hints.ai_flags |= AI_ADDRCONFIG;
234 ai_hints.ai_family = AF_UNSPEC;
235 ai_hints.ai_socktype = SOCK_DGRAM;
236 ai_hints.ai_protocol = IPPROTO_UDP;
238 ai_return = getaddrinfo (node, service, &ai_hints, &ai_list);
242 ERROR ("gmond plugin: getaddrinfo (%s, %s) failed: %s",
243 (node == NULL) ? "(null)" : node,
244 (service == NULL) ? "(null)" : service,
245 (ai_return == EAI_SYSTEM)
246 ? sstrerror (errno, errbuf, sizeof (errbuf))
247 : gai_strerror (ai_return));
251 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) /* {{{ */
255 tmp = realloc (sockets, (sockets_num + 1) * sizeof (*sockets));
258 ERROR ("gmond plugin: realloc failed.");
263 sockets[sockets_num].fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype,
264 ai_ptr->ai_protocol);
265 if (sockets[sockets_num].fd < 0)
268 ERROR ("gmond plugin: socket failed: %s",
269 sstrerror (errno, errbuf, sizeof (errbuf)));
273 assert (sizeof (sockets[sockets_num].addr) >= ai_ptr->ai_addrlen);
274 memcpy (&sockets[sockets_num].addr, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
275 sockets[sockets_num].addrlen = ai_ptr->ai_addrlen;
277 /* Sending socket: Open only one socket and don't bind it. */
287 status = setsockopt (sockets[sockets_num].fd, SOL_SOCKET, SO_REUSEADDR,
288 (void *) &yes, sizeof (yes));
292 WARNING ("gmond plugin: setsockopt(2) failed: %s",
293 sstrerror (errno, errbuf, sizeof (errbuf)));
297 status = bind (sockets[sockets_num].fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
301 ERROR ("gmond plugin: bind failed: %s",
302 sstrerror (errno, errbuf, sizeof (errbuf)));
303 close (sockets[sockets_num].fd);
307 if (ai_ptr->ai_family == AF_INET)
309 struct sockaddr_in *addr;
312 addr = (struct sockaddr_in *) ai_ptr->ai_addr;
314 if (!IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
321 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IP, IP_MULTICAST_LOOP,
322 (void *) &loop, sizeof (loop));
326 WARNING ("gmond plugin: setsockopt(2) failed: %s",
327 sstrerror (errno, errbuf, sizeof (errbuf)));
330 struct ip_mreq mreq = {
331 .imr_multiaddr.s_addr = addr->sin_addr.s_addr,
332 .imr_interface.s_addr = htonl (INADDR_ANY)
335 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
336 (void *) &mreq, sizeof (mreq));
340 WARNING ("gmond plugin: setsockopt(2) failed: %s",
341 sstrerror (errno, errbuf, sizeof (errbuf)));
343 } /* if (ai_ptr->ai_family == AF_INET) */
344 else if (ai_ptr->ai_family == AF_INET6)
346 struct sockaddr_in6 *addr;
349 addr = (struct sockaddr_in6 *) ai_ptr->ai_addr;
351 if (!IN6_IS_ADDR_MULTICAST (&addr->sin6_addr))
358 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
359 (void *) &loop, sizeof (loop));
363 WARNING ("gmond plugin: setsockopt(2) failed: %s",
364 sstrerror (errno, errbuf, sizeof (errbuf)));
367 struct ipv6_mreq mreq = {
368 .ipv6mr_interface = 0 /* any */
371 memcpy (&mreq.ipv6mr_multiaddr,
372 &addr->sin6_addr, sizeof (addr->sin6_addr));
373 status = setsockopt (sockets[sockets_num].fd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP,
374 (void *) &mreq, sizeof (mreq));
378 WARNING ("gmond plugin: setsockopt(2) failed: %s",
379 sstrerror (errno, errbuf, sizeof (errbuf)));
381 } /* if (ai_ptr->ai_family == AF_INET6) */
384 } /* }}} for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) */
386 freeaddrinfo (ai_list);
388 if (sockets_num == 0)
394 *ret_sockets = sockets;
395 *ret_sockets_num = sockets_num;
397 } /* }}} int create_sockets */
399 static int request_meta_data (const char *host, const char *name) /* {{{ */
401 Ganglia_metadata_msg msg = { 0 };
402 char buffer[BUFF_SIZE] = { 0 };
403 unsigned int buffer_size;
407 msg.id = gmetadata_request;
408 msg.Ganglia_metadata_msg_u.grequest.metric_id.host = strdup (host);
409 msg.Ganglia_metadata_msg_u.grequest.metric_id.name = strdup (name);
411 if ((msg.Ganglia_metadata_msg_u.grequest.metric_id.host == NULL)
412 || (msg.Ganglia_metadata_msg_u.grequest.metric_id.name == NULL))
414 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);
415 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name);
419 xdrmem_create (&xdr, buffer, sizeof (buffer), XDR_ENCODE);
421 if (!xdr_Ganglia_metadata_msg (&xdr, &msg))
423 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);
424 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name);
428 buffer_size = xdr_getpos (&xdr);
430 DEBUG ("gmond plugin: Requesting meta data for %s/%s.",
433 pthread_mutex_lock (&mc_send_sockets_lock);
434 for (i = 0; i < mc_send_sockets_num; i++)
436 ssize_t status = sendto (mc_send_sockets[i].fd, buffer, (size_t) buffer_size,
438 (struct sockaddr *) &mc_send_sockets[i].addr,
439 mc_send_sockets[i].addrlen);
443 ERROR ("gmond plugin: sendto(2) failed: %s",
444 sstrerror (errno, errbuf, sizeof (errbuf)));
448 pthread_mutex_unlock (&mc_send_sockets_lock);
450 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);
451 sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name);
453 } /* }}} int request_meta_data */
455 static staging_entry_t *staging_entry_get (const char *host, /* {{{ */
457 const char *type, const char *type_instance,
460 char key[2 * DATA_MAX_NAME_LEN];
464 if (staging_tree == NULL)
467 ssnprintf (key, sizeof (key), "%s/%s/%s", host, type,
468 (type_instance != NULL) ? type_instance : "");
471 status = c_avl_get (staging_tree, key, (void *) &se);
475 /* insert new entry */
476 se = calloc (1, sizeof (*se));
480 sstrncpy (se->key, key, sizeof (se->key));
483 se->vl.values = (value_t *) calloc (values_len, sizeof (*se->vl.values));
484 if (se->vl.values == NULL)
489 se->vl.values_len = values_len;
493 sstrncpy (se->vl.host, host, sizeof (se->vl.host));
494 sstrncpy (se->vl.plugin, "gmond", sizeof (se->vl.plugin));
495 sstrncpy (se->vl.type, type, sizeof (se->vl.type));
496 if (type_instance != NULL)
497 sstrncpy (se->vl.type_instance, type_instance,
498 sizeof (se->vl.type_instance));
500 status = c_avl_insert (staging_tree, se->key, se);
503 ERROR ("gmond plugin: c_avl_insert failed.");
504 sfree (se->vl.values);
510 } /* }}} staging_entry_t *staging_entry_get */
512 static int staging_entry_update (const char *host, const char *name, /* {{{ */
513 const char *type, const char *type_instance,
514 size_t ds_index, int ds_type, value_t value)
516 const data_set_t *ds;
519 ds = plugin_get_ds (type);
522 ERROR ("gmond plugin: Looking up type %s failed.", type);
526 if (ds->ds_num <= ds_index)
528 ERROR ("gmond plugin: Invalid index %zu: %s has only %zu data source(s).",
529 ds_index, ds->type, ds->ds_num);
533 pthread_mutex_lock (&staging_lock);
535 se = staging_entry_get (host, name, type, type_instance, ds->ds_num);
538 pthread_mutex_unlock (&staging_lock);
539 ERROR ("gmond plugin: staging_entry_get failed.");
542 if (se->vl.values_len != ds->ds_num)
544 pthread_mutex_unlock (&staging_lock);
548 if (ds_type == DS_TYPE_COUNTER)
549 se->vl.values[ds_index].counter += value.counter;
550 else if (ds_type == DS_TYPE_GAUGE)
551 se->vl.values[ds_index].gauge = value.gauge;
552 else if (ds_type == DS_TYPE_DERIVE)
553 se->vl.values[ds_index].derive += value.derive;
554 else if (ds_type == DS_TYPE_ABSOLUTE)
555 se->vl.values[ds_index].absolute = value.absolute;
559 se->flags |= (0x01 << ds_index);
561 /* Check if all data sources have been set. If not, return here. */
562 if (se->flags != ((0x01 << se->vl.values_len) - 1))
564 pthread_mutex_unlock (&staging_lock);
568 /* Check if the interval of this metric is known. If not, request meta data
570 if (se->vl.interval == 0)
572 /* No meta data has been received for this metric yet. */
574 pthread_mutex_unlock (&staging_lock);
576 request_meta_data (host, name);
580 plugin_dispatch_values (&se->vl);
583 pthread_mutex_unlock (&staging_lock);
586 } /* }}} int staging_entry_update */
588 static int mc_handle_value_msg (Ganglia_value_msg *msg) /* {{{ */
594 value_t value_counter;
596 value_t value_derive;
598 /* Fill in `host', `name', `value_counter', and `value_gauge' according to
599 * the value type, or return with an error. */
600 switch (msg->id) /* {{{ */
604 Ganglia_gmetric_uint msg_uint;
606 msg_uint = msg->Ganglia_value_msg_u.gu_int;
608 host = msg_uint.metric_id.host;
609 name = msg_uint.metric_id.name;
610 value_counter.counter = (counter_t) msg_uint.ui;
611 value_gauge.gauge = (gauge_t) msg_uint.ui;
612 value_derive.derive = (derive_t) msg_uint.ui;
618 Ganglia_gmetric_string msg_string;
621 msg_string = msg->Ganglia_value_msg_u.gstr;
623 host = msg_string.metric_id.host;
624 name = msg_string.metric_id.name;
626 status = parse_value (msg_string.str, &value_derive, DS_TYPE_DERIVE);
628 value_derive.derive = -1;
630 status = parse_value (msg_string.str, &value_gauge, DS_TYPE_GAUGE);
632 value_gauge.gauge = NAN;
634 status = parse_value (msg_string.str, &value_counter, DS_TYPE_COUNTER);
636 value_counter.counter = 0;
643 Ganglia_gmetric_float msg_float;
645 msg_float = msg->Ganglia_value_msg_u.gf;
647 host = msg_float.metric_id.host;
648 name = msg_float.metric_id.name;
649 value_counter.counter = (counter_t) msg_float.f;
650 value_gauge.gauge = (gauge_t) msg_float.f;
651 value_derive.derive = (derive_t) msg_float.f;
657 Ganglia_gmetric_double msg_double;
659 msg_double = msg->Ganglia_value_msg_u.gd;
661 host = msg_double.metric_id.host;
662 name = msg_double.metric_id.name;
663 value_counter.counter = (counter_t) msg_double.d;
664 value_gauge.gauge = (gauge_t) msg_double.d;
665 value_derive.derive = (derive_t) msg_double.d;
669 DEBUG ("gmond plugin: Value type not handled: %i", msg->id);
671 } /* }}} switch (msg->id) */
673 assert (host != NULL);
674 assert (name != NULL);
676 map = metric_lookup (name);
681 if ((map->ds_type == DS_TYPE_COUNTER)
682 || (map->ds_type == DS_TYPE_ABSOLUTE))
683 val_copy = value_counter;
684 else if (map->ds_type == DS_TYPE_GAUGE)
685 val_copy = value_gauge;
686 else if (map->ds_type == DS_TYPE_DERIVE)
687 val_copy = value_derive;
691 return (staging_entry_update (host, name,
692 map->type, map->type_instance,
693 map->ds_index, map->ds_type,
697 DEBUG ("gmond plugin: Cannot find a translation for %s.", name);
699 } /* }}} int mc_handle_value_msg */
701 static int mc_handle_metadata_msg (Ganglia_metadata_msg *msg) /* {{{ */
707 Ganglia_metadatadef msg_meta;
709 const data_set_t *ds;
712 msg_meta = msg->Ganglia_metadata_msg_u.gfull;
714 if (msg_meta.metric.tmax == 0)
717 map = metric_lookup (msg_meta.metric_id.name);
720 DEBUG ("gmond plugin: Not handling meta data %s.",
721 msg_meta.metric_id.name);
725 ds = plugin_get_ds (map->type);
728 WARNING ("gmond plugin: Could not find data set %s.", map->type);
732 DEBUG ("gmond plugin: Received meta data for %s/%s.",
733 msg_meta.metric_id.host, msg_meta.metric_id.name);
735 pthread_mutex_lock (&staging_lock);
736 se = staging_entry_get (msg_meta.metric_id.host,
737 msg_meta.metric_id.name,
738 map->type, map->type_instance,
741 se->vl.interval = TIME_T_TO_CDTIME_T (msg_meta.metric.tmax);
742 pthread_mutex_unlock (&staging_lock);
746 ERROR ("gmond plugin: staging_entry_get failed.");
760 } /* }}} int mc_handle_metadata_msg */
762 static int mc_handle_metric (void *buffer, size_t buffer_size) /* {{{ */
765 Ganglia_msg_formats format;
767 xdrmem_create (&xdr, buffer, buffer_size, XDR_DECODE);
769 xdr_Ganglia_msg_formats (&xdr, &format);
770 xdr_setpos (&xdr, 0);
782 Ganglia_value_msg msg = { 0 };
784 if (xdr_Ganglia_value_msg (&xdr, &msg))
785 mc_handle_value_msg (&msg);
790 case gmetadata_request:
792 Ganglia_metadata_msg msg = { 0 };
793 if (xdr_Ganglia_metadata_msg (&xdr, &msg))
794 mc_handle_metadata_msg (&msg);
799 DEBUG ("gmond plugin: Unknown format: %i", format);
801 } /* switch (format) */
805 } /* }}} int mc_handle_metric */
807 static int mc_handle_socket (struct pollfd *p) /* {{{ */
809 char buffer[BUFF_SIZE];
812 if ((p->revents & (POLLIN | POLLPRI)) == 0)
818 buffer_size = recv (p->fd, buffer, sizeof (buffer), /* flags = */ 0);
819 if (buffer_size <= 0)
822 ERROR ("gmond plugin: recv failed: %s",
823 sstrerror (errno, errbuf, sizeof (errbuf)));
828 mc_handle_metric (buffer, (size_t) buffer_size);
830 } /* }}} int mc_handle_socket */
832 static void *mc_receive_thread (void *arg) /* {{{ */
834 socket_entry_t *mc_receive_socket_entries;
838 mc_receive_socket_entries = NULL;
839 status = create_sockets (&mc_receive_socket_entries, &mc_receive_sockets_num,
840 (mc_receive_group != NULL) ? mc_receive_group : MC_RECEIVE_GROUP_DEFAULT,
841 (mc_receive_port != NULL) ? mc_receive_port : MC_RECEIVE_PORT_DEFAULT,
845 ERROR ("gmond plugin: create_sockets failed.");
846 return ((void *) -1);
849 mc_receive_sockets = (struct pollfd *) calloc (mc_receive_sockets_num,
850 sizeof (*mc_receive_sockets));
851 if (mc_receive_sockets == NULL)
853 ERROR ("gmond plugin: calloc failed.");
854 for (i = 0; i < mc_receive_sockets_num; i++)
855 close (mc_receive_socket_entries[i].fd);
856 free (mc_receive_socket_entries);
857 mc_receive_socket_entries = NULL;
858 mc_receive_sockets_num = 0;
859 return ((void *) -1);
862 for (i = 0; i < mc_receive_sockets_num; i++)
864 mc_receive_sockets[i].fd = mc_receive_socket_entries[i].fd;
865 mc_receive_sockets[i].events = POLLIN | POLLPRI;
866 mc_receive_sockets[i].revents = 0;
869 while (mc_receive_thread_loop != 0)
871 status = poll (mc_receive_sockets, mc_receive_sockets_num, -1);
877 ERROR ("gmond plugin: poll failed: %s",
878 sstrerror (errno, errbuf, sizeof (errbuf)));
882 for (i = 0; i < mc_receive_sockets_num; i++)
884 if (mc_receive_sockets[i].revents != 0)
885 mc_handle_socket (mc_receive_sockets + i);
887 } /* while (mc_receive_thread_loop != 0) */
889 free (mc_receive_socket_entries);
891 } /* }}} void *mc_receive_thread */
893 static int mc_receive_thread_start (void) /* {{{ */
897 if (mc_receive_thread_running != 0)
900 mc_receive_thread_loop = 1;
902 status = plugin_thread_create (&mc_receive_thread_id, /* attr = */ NULL,
903 mc_receive_thread, /* args = */ NULL);
906 ERROR ("gmond plugin: Starting receive thread failed.");
907 mc_receive_thread_loop = 0;
911 mc_receive_thread_running = 1;
913 } /* }}} int start_receive_thread */
915 static int mc_receive_thread_stop (void) /* {{{ */
917 if (mc_receive_thread_running == 0)
920 mc_receive_thread_loop = 0;
922 INFO ("gmond plugin: Stopping receive thread.");
923 pthread_kill (mc_receive_thread_id, SIGTERM);
924 pthread_join (mc_receive_thread_id, /* return value = */ NULL);
925 memset (&mc_receive_thread_id, 0, sizeof (mc_receive_thread_id));
927 mc_receive_thread_running = 0;
930 } /* }}} int mc_receive_thread_stop */
936 * MCReceiveFrom "239.2.11.71" "8649"
937 * <Metric "load_one">
939 * [TypeInstance "foo"]
944 static int gmond_config_set_string (oconfig_item_t *ci, char **str) /* {{{ */
948 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
950 WARNING ("gmond plugin: The `%s' option needs "
951 "exactly one string argument.", ci->key);
955 tmp = strdup (ci->values[0].value.string);
958 ERROR ("gmond plugin: strdup failed.");
965 } /* }}} int gmond_config_set_string */
967 static int gmond_config_add_metric (oconfig_item_t *ci) /* {{{ */
972 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
974 WARNING ("gmond plugin: `Metric' blocks need "
975 "exactly one string argument.");
979 map = realloc (metric_map, (metric_map_len + 1) * sizeof (*metric_map));
982 ERROR ("gmond plugin: realloc failed.");
986 map = metric_map + metric_map_len;
988 memset (map, 0, sizeof (*map));
990 map->type_instance = NULL;
995 map->ganglia_name = strdup (ci->values[0].value.string);
996 if (map->ganglia_name == NULL)
998 ERROR ("gmond plugin: strdup failed.");
1002 for (i = 0; i < ci->children_num; i++)
1004 oconfig_item_t *child = ci->children + i;
1005 if (strcasecmp ("Type", child->key) == 0)
1006 gmond_config_set_string (child, &map->type);
1007 else if (strcasecmp ("TypeInstance", child->key) == 0)
1008 gmond_config_set_string (child, &map->type_instance);
1009 else if (strcasecmp ("DataSource", child->key) == 0)
1010 gmond_config_set_string (child, &map->ds_name);
1013 WARNING ("gmond plugin: Unknown configuration option `%s' ignored.",
1018 if (map->type == NULL)
1020 ERROR ("gmond plugin: No type is set for metric %s.",
1022 sfree (map->ganglia_name);
1023 sfree (map->type_instance);
1029 } /* }}} int gmond_config_add_metric */
1031 static int gmond_config_set_address (oconfig_item_t *ci, /* {{{ */
1032 char **ret_addr, char **ret_port)
1037 if ((ci->values_num != 1) && (ci->values_num != 2))
1039 WARNING ("gmond plugin: The `%s' config option needs "
1040 "one or two string arguments.",
1044 if ((ci->values[0].type != OCONFIG_TYPE_STRING)
1045 || ((ci->values_num == 2)
1046 && (ci->values[1].type != OCONFIG_TYPE_STRING)))
1048 WARNING ("gmond plugin: The `%s' config option needs "
1049 "one or two string arguments.",
1054 addr = strdup (ci->values[0].value.string);
1055 if (ci->values_num == 2)
1056 port = strdup (ci->values[1].value.string);
1060 if ((addr == NULL) || ((ci->values_num == 2) && (port == NULL)))
1062 ERROR ("gmond plugin: strdup failed.");
1075 } /* }}} int gmond_config_set_address */
1077 static int gmond_config (oconfig_item_t *ci) /* {{{ */
1081 for (i = 0; i < ci->children_num; i++)
1083 oconfig_item_t *child = ci->children + i;
1084 if (strcasecmp ("MCReceiveFrom", child->key) == 0)
1085 gmond_config_set_address (child, &mc_receive_group, &mc_receive_port);
1086 else if (strcasecmp ("Metric", child->key) == 0)
1087 gmond_config_add_metric (child);
1090 WARNING ("gmond plugin: Unknown configuration option `%s' ignored.",
1096 } /* }}} int gmond_config */
1098 static int gmond_init (void) /* {{{ */
1100 create_sockets (&mc_send_sockets, &mc_send_sockets_num,
1101 (mc_receive_group != NULL) ? mc_receive_group : MC_RECEIVE_GROUP_DEFAULT,
1102 (mc_receive_port != NULL) ? mc_receive_port : MC_RECEIVE_PORT_DEFAULT,
1105 staging_tree = c_avl_create ((int (*) (const void *, const void *)) strcmp);
1106 if (staging_tree == NULL)
1108 ERROR ("gmond plugin: c_avl_create failed.");
1112 mc_receive_thread_start ();
1115 } /* }}} int gmond_init */
1117 static int gmond_shutdown (void) /* {{{ */
1121 mc_receive_thread_stop ();
1123 pthread_mutex_lock (&mc_send_sockets_lock);
1124 for (i = 0; i < mc_send_sockets_num; i++)
1126 close (mc_send_sockets[i].fd);
1127 mc_send_sockets[i].fd = -1;
1129 sfree (mc_send_sockets);
1130 mc_send_sockets_num = 0;
1131 pthread_mutex_unlock (&mc_send_sockets_lock);
1135 } /* }}} int gmond_shutdown */
1137 void module_register (void)
1139 plugin_register_complex_config ("gmond", gmond_config);
1140 plugin_register_init ("gmond", gmond_init);
1141 plugin_register_shutdown ("gmond", gmond_shutdown);
1144 /* vim: set sw=2 sts=2 et fdm=marker : */