From: Florian Forster Date: Mon, 9 Mar 2009 15:39:09 +0000 (+0100) Subject: gmond plugin: Add a plugin to receive Ganglia multicast traffic. X-Git-Tag: collectd-4.7.0~118^2~1 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=2f0bd3ba78bdbfb6a1a5a1252573e5815ce3fb0b;p=collectd.git gmond plugin: Add a plugin to receive Ganglia multicast traffic. --- diff --git a/README b/README index 7889d2c7..1f6973c9 100644 --- a/README +++ b/README @@ -76,6 +76,9 @@ Features - filecount Count the number of files in directories. + - gmond + Receive multicast traffic from Ganglia instances. + - hddtemp Harddisk temperatures using hddtempd. diff --git a/configure.in b/configure.in index 3445e21f..c7cd1ba7 100644 --- a/configure.in +++ b/configure.in @@ -1187,6 +1187,82 @@ AC_DEFINE_UNQUOTED(COLLECT_LIBESMTP, [$collect_libesmtp], AM_CONDITIONAL(BUILD_WITH_LIBESMTP, test "x$with_libesmtp" = "xyes") # }}} +# --with-libganglia {{{ +AC_ARG_WITH(libganglia, [AS_HELP_STRING([--with-libganglia@<:@=PREFIX@:>@], [Path to libganglia.])], +[ + if test -f "$withval" && test -x "$withval" + then + with_libganglia_config="$withval" + with_libganglia="yes" + else if test -f "$withval/bin/ganglia-config" && test -x "$withval/bin/ganglia-config" + then + with_libganglia_config="$withval/bin/ganglia-config" + with_libganglia="yes" + else if test -d "$withval" + then + GANGLIA_CPPFLAGS="-I$withval/include" + GANGLIA_LDFLAGS="-L$withval/lib" + with_libganglia="yes" + else + with_libganglia_config="ganglia-config" + with_libganglia="$withval" + fi; fi; fi +], +[ + with_libganglia_config="ganglia-config" + with_libganglia="yes" +]) + +if test "x$with_libganglia" = "xyes" && test "x$with_libganglia_config" != "x" +then + if test "x$GANGLIA_CPPFLAGS" = "x" + then + GANGLIA_CPPFLAGS=`"$with_libganglia_config" --cflags 2>/dev/null` + fi + + if test "x$GANGLIA_LDFLAGS" = "x" + then + GANGLIA_LDFLAGS=`"$with_libganglia_config" --ldflags 2>/dev/null` + fi + + if test "x$GANGLIA_LIBS" = "x" + then + GANGLIA_LIBS=`"$with_libganglia_config" --libs 2>/dev/null` + fi +fi + +SAVE_CPPFLAGS="$CPPFLAGS" +SAVE_LDFLAGS="$LDFLAGS" +CPPFLAGS="$CPPFLAGS $GANGLIA_CPPFLAGS" +LDFLAGS="$LDFLAGS $GANGLIA_LDFLAGS" + +if test "x$with_libganglia" = "xyes" +then + AC_CHECK_HEADERS(gm_protocol.h, + [ + AC_DEFINE(HAVE_GM_PROTOCOL_H, 1, + [Define to 1 if you have the header file.]) + ], [with_libganglia="no (gm_protocol.h not found)"]) +fi + +if test "x$with_libganglia" = "xyes" +then + AC_CHECK_LIB(ganglia, xdr_Ganglia_value_msg, + [ + AC_DEFINE(HAVE_LIBGANGLIA, 1, + [Define to 1 if you have the ganglia library (-lganglia).]) + ], [with_libganglia="no (symbol xdr_Ganglia_value_msg not found)"]) +fi + +CPPFLAGS="$SAVE_CPPFLAGS" +LDFLAGS="$SAVE_LDFLAGS" + +AC_SUBST(GANGLIA_CPPFLAGS) +AC_SUBST(GANGLIA_LDFLAGS) +AC_SUBST(GANGLIA_LIBS) +AM_CONDITIONAL(BUILD_WITH_LIBGANGLIA, test "x$with_libganglia" = "xyes") +# }}} + # --with-libiptc {{{ with_own_libiptc="no" AC_ARG_WITH(libiptc, [AS_HELP_STRING([--with-libiptc@<:@=PREFIX@:>@], [Path to libiptc.])], @@ -3148,6 +3224,7 @@ AC_PLUGIN([email], [yes], [EMail statistics]) AC_PLUGIN([entropy], [$plugin_entropy], [Entropy statistics]) AC_PLUGIN([exec], [yes], [Execution of external programs]) AC_PLUGIN([filecount], [yes], [Count files in directories]) +AC_PLUGIN([gmond], [$with_libganglia], [Ganglia plugin]) AC_PLUGIN([hddtemp], [yes], [Query hddtempd]) AC_PLUGIN([interface], [$plugin_interface], [Interface traffic statistics]) AC_PLUGIN([ipmi], [$plugin_ipmi], [IPMI sensor statistics]) @@ -3431,6 +3508,7 @@ Configuration: entropy . . . . . . . $enable_entropy exec . . . . . . . . $enable_exec filecount . . . . . . $enable_filecount + gmond . . . . . . . . $enable_gmond hddtemp . . . . . . . $enable_hddtemp interface . . . . . . $enable_interface ipmi . . . . . . . . $enable_ipmi diff --git a/src/Makefile.am b/src/Makefile.am index 5401bba7..5cc1045f 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -305,6 +305,16 @@ collectd_LDADD += "-dlopen" filecount.la collectd_DEPENDENCIES += filecount.la endif +if BUILD_PLUGIN_GMOND +pkglib_LTLIBRARIES += gmond.la +gmond_la_SOURCES = gmond.c +gmond_la_CPPFLAGS = $(AM_CPPFLAGS) $(GANGLIA_CPPFLAGS) +gmond_la_LDFLAGS = -module -avoid-version $(GANGLIA_LDFLAGS) +gmond_la_LIBADD = $(GANGLIA_LIBS) +collectd_LDADD += "-dlopen" gmond.la +collectd_DEPENDENCIES += gmond.la +endif + if BUILD_PLUGIN_HDDTEMP pkglib_LTLIBRARIES += hddtemp.la hddtemp_la_SOURCES = hddtemp.c diff --git a/src/collectd.conf.in b/src/collectd.conf.in index 5af381d4..1f56f1fc 100644 --- a/src/collectd.conf.in +++ b/src/collectd.conf.in @@ -68,6 +68,7 @@ FQDNLookup true #@BUILD_PLUGIN_ENTROPY_TRUE@LoadPlugin entropy #@BUILD_PLUGIN_EXEC_TRUE@LoadPlugin exec #@BUILD_PLUGIN_FILECOUNT_TRUE@LoadPlugin filecount +#@BUILD_PLUGIN_GMOND_TRUE@LoadPlugin gmond #@BUILD_PLUGIN_HDDTEMP_TRUE@LoadPlugin hddtemp @BUILD_PLUGIN_INTERFACE_TRUE@@BUILD_PLUGIN_INTERFACE_TRUE@LoadPlugin interface #@BUILD_PLUGIN_IPTABLES_TRUE@LoadPlugin iptables diff --git a/src/gmond.c b/src/gmond.c new file mode 100644 index 00000000..a15099b5 --- /dev/null +++ b/src/gmond.c @@ -0,0 +1,875 @@ +/** + * collectd - src/gmond.c + * Copyright (C) 2005-2009 Florian octo Forster + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; only version 2 of the License is applicable. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: + * Florian octo Forster + **/ + +#include "collectd.h" +#include "plugin.h" +#include "common.h" +#include "configfile.h" +#include "utils_avltree.h" + +#include "network.h" + +#if HAVE_PTHREAD_H +# include +#endif +#if HAVE_SYS_SOCKET_H +# include +#endif +#if HAVE_NETDB_H +# include +#endif +#if HAVE_NETINET_IN_H +# include +#endif +#if HAVE_ARPA_INET_H +# include +#endif +#if HAVE_POLL_H +# include +#endif + +#include + +#ifndef IPV6_ADD_MEMBERSHIP +# ifdef IPV6_JOIN_GROUP +# define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP +# else +# error "Neither IP_ADD_MEMBERSHIP nor IPV6_JOIN_GROUP is defined" +# endif +#endif /* !IP_ADD_MEMBERSHIP */ + +#ifdef GANGLIA_MAX_MESSAGE_LEN +# define BUFF_SIZE GANGLIA_MAX_MESSAGE_LEN +#else +# define BUFF_SIZE 1400 +#endif + +struct socket_entry_s +{ + int fd; + struct sockaddr_storage addr; + socklen_t addrlen; +}; +typedef struct socket_entry_s socket_entry_t; + +struct staging_entry_s +{ + char key[2 * DATA_MAX_NAME_LEN]; + value_list_t vl; + int flags; +}; +typedef struct staging_entry_s staging_entry_t; + +struct metric_map_s +{ + const char *ganglia_name; + const char *type; + const char *type_instance; + int ds_type; + size_t value_index; +}; +typedef struct metric_map_s metric_map_t; + +static struct pollfd *mc_receive_sockets = NULL; +static size_t mc_receive_sockets_num = 0; + +static socket_entry_t *mc_send_sockets = NULL; +static size_t mc_send_sockets_num = 0; +static pthread_mutex_t mc_send_sockets_lock = PTHREAD_MUTEX_INITIALIZER; + +static int mc_receive_thread_loop = 0; +static int mc_receive_thread_running = 0; +static pthread_t mc_receive_thread_id; + +static metric_map_t metric_map[] = +{ + { "load_one", "load", "", DS_TYPE_GAUGE, 0 }, + { "load_five", "load", "", DS_TYPE_GAUGE, 1 }, + { "load_fifteen", "load", "", DS_TYPE_GAUGE, 2 }, + { "cpu_user", "cpu", "user", DS_TYPE_COUNTER, 0 }, + { "cpu_system", "cpu", "system", DS_TYPE_COUNTER, 0 }, + { "cpu_idle", "cpu", "idle", DS_TYPE_COUNTER, 0 }, + { "cpu_nice", "cpu", "nice", DS_TYPE_COUNTER, 0 }, + { "cpu_wio", "cpu", "wait", DS_TYPE_COUNTER, 0 }, + { "mem_free", "memory", "free", DS_TYPE_GAUGE, 0 }, + { "mem_shared", "memory", "shared", DS_TYPE_GAUGE, 0 }, + { "mem_buffers", "memory", "buffered", DS_TYPE_GAUGE, 0 }, + { "mem_cached", "memory", "cached", DS_TYPE_GAUGE, 0 }, + { "mem_total", "memory", "total", DS_TYPE_GAUGE, 0 }, + { "bytes_in", "if_octets", "", DS_TYPE_COUNTER, 0 }, + { "bytes_out", "if_octets", "", DS_TYPE_COUNTER, 1 }, + { "pkts_in", "if_packets", "", DS_TYPE_COUNTER, 0 }, + { "pkts_out", "if_packets", "", DS_TYPE_COUNTER, 1 } +}; +static size_t metric_map_len = STATIC_ARRAY_SIZE (metric_map); + +static c_avl_tree_t *staging_tree; +static pthread_mutex_t staging_lock = PTHREAD_MUTEX_INITIALIZER; + +static int create_sockets (socket_entry_t **ret_sockets, /* {{{ */ + size_t *ret_sockets_num, + const char *node, const char *service, int listen) +{ + struct addrinfo ai_hints; + struct addrinfo *ai_list; + struct addrinfo *ai_ptr; + int ai_return; + + socket_entry_t *sockets; + size_t sockets_num; + + int status; + + sockets = *ret_sockets; + sockets_num = *ret_sockets_num; + + memset (&ai_hints, 0, sizeof (ai_hints)); + ai_hints.ai_flags = 0; +#ifdef AI_PASSIVE + ai_hints.ai_flags |= AI_PASSIVE; +#endif +#ifdef AI_ADDRCONFIG + ai_hints.ai_flags |= AI_ADDRCONFIG; +#endif + ai_hints.ai_family = AF_UNSPEC; + ai_hints.ai_socktype = SOCK_DGRAM; + ai_hints.ai_protocol = IPPROTO_UDP; + + ai_return = getaddrinfo (node, service, &ai_hints, &ai_list); + if (ai_return != 0) + { + char errbuf[1024]; + ERROR ("gmond plugin: getaddrinfo (%s, %s) failed: %s", + (node == NULL) ? "(null)" : node, + (service == NULL) ? "(null)" : service, + (ai_return == EAI_SYSTEM) + ? sstrerror (errno, errbuf, sizeof (errbuf)) + : gai_strerror (ai_return)); + return (-1); + } + + for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) /* {{{ */ + { + socket_entry_t *tmp; + + tmp = realloc (sockets, (sockets_num + 1) * sizeof (*sockets)); + if (tmp == NULL) + { + ERROR ("gmond plugin: realloc failed."); + continue; + } + sockets = tmp; + + sockets[sockets_num].fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, + ai_ptr->ai_protocol); + if (sockets[sockets_num].fd < 0) + { + char errbuf[1024]; + ERROR ("gmond plugin: socket failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + continue; + } + + assert (sizeof (sockets[sockets_num].addr) >= ai_ptr->ai_addrlen); + memcpy (&sockets[sockets_num].addr, ai_ptr->ai_addr, ai_ptr->ai_addrlen); + sockets[sockets_num].addrlen = ai_ptr->ai_addrlen; + + /* Sending socket: Open only one socket and don't bind it. */ + if (listen == 0) + { + sockets_num++; + break; + } + else + { + int yes = 1; + + setsockopt (sockets[sockets_num].fd, SOL_SOCKET, SO_REUSEADDR, + (void *) &yes, sizeof (yes)); + } + + status = bind (sockets[sockets_num].fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen); + if (status != 0) + { + char errbuf[1024]; + ERROR ("gmond plugin: bind failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + close (sockets[sockets_num].fd); + continue; + } + + if (ai_ptr->ai_family == AF_INET) + { + struct sockaddr_in *addr; + struct ip_mreq mreq; + int loop; + + addr = (struct sockaddr_in *) ai_ptr->ai_addr; + + if (!IN_MULTICAST (ntohl (addr->sin_addr.s_addr))) + { + sockets_num++; + continue; + } + + loop = 1; + setsockopt (sockets[sockets_num].fd, IPPROTO_IP, IP_MULTICAST_LOOP, + (void *) &loop, sizeof (loop)); + + memset (&mreq, 0, sizeof (mreq)); + mreq.imr_multiaddr.s_addr = addr->sin_addr.s_addr; + mreq.imr_interface.s_addr = htonl (INADDR_ANY); + setsockopt (sockets[sockets_num].fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, + (void *) &mreq, sizeof (mreq)); + } /* if (ai_ptr->ai_family == AF_INET) */ + else if (ai_ptr->ai_family == AF_INET6) + { + struct sockaddr_in6 *addr; + struct ipv6_mreq mreq; + int loop; + + addr = (struct sockaddr_in6 *) ai_ptr->ai_addr; + + if (!IN6_IS_ADDR_MULTICAST (&addr->sin6_addr)) + { + sockets_num++; + continue; + } + + loop = 1; + setsockopt (sockets[sockets_num].fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, + (void *) &loop, sizeof (loop)); + + memset (&mreq, 0, sizeof (mreq)); + memcpy (&mreq.ipv6mr_multiaddr, + &addr->sin6_addr, sizeof (addr->sin6_addr)); + mreq.ipv6mr_interface = 0; /* any */ + setsockopt (sockets[sockets_num].fd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, + (void *) &mreq, sizeof (mreq)); + } /* if (ai_ptr->ai_family == AF_INET6) */ + + sockets_num++; + } /* }}} for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) */ + + freeaddrinfo (ai_list); + + if ((*ret_sockets_num) >= sockets_num) + return (-1); + + *ret_sockets = sockets; + *ret_sockets_num = sockets_num; + return (0); +} /* }}} int create_sockets */ + +static int request_meta_data (const char *host, const char *name) /* {{{ */ +{ + Ganglia_metadata_msg msg; + char buffer[BUFF_SIZE]; + unsigned int buffer_size; + XDR xdr; + size_t i; + + memset (&msg, 0, sizeof (msg)); + + msg.id = gmetadata_request; + msg.Ganglia_metadata_msg_u.grequest.metric_id.host = strdup (host); + msg.Ganglia_metadata_msg_u.grequest.metric_id.name = strdup (name); + + if ((msg.Ganglia_metadata_msg_u.grequest.metric_id.host == NULL) + || (msg.Ganglia_metadata_msg_u.grequest.metric_id.name == NULL)) + { + sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host); + sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name); + return (-1); + } + + memset (buffer, 0, sizeof (buffer)); + xdrmem_create (&xdr, buffer, sizeof (buffer), XDR_ENCODE); + + if (!xdr_Ganglia_metadata_msg (&xdr, &msg)) + { + sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host); + sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name); + return (-1); + } + + buffer_size = xdr_getpos (&xdr); + + DEBUG ("gmond plugin: Requesting meta data for %s/%s.", + host, name); + + pthread_mutex_lock (&mc_send_sockets_lock); + for (i = 0; i < mc_send_sockets_num; i++) + sendto (mc_send_sockets[i].fd, buffer, (size_t) buffer_size, + /* flags = */ 0, + (struct sockaddr *) &mc_send_sockets[i].addr, + mc_send_sockets[i].addrlen); + pthread_mutex_unlock (&mc_send_sockets_lock); + + sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host); + sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.name); + return (0); +} /* }}} int request_meta_data */ + +static staging_entry_t *staging_entry_get (const char *host, /* {{{ */ + const char *name, + const char *type, const char *type_instance, + int values_len) +{ + char key[2 * DATA_MAX_NAME_LEN]; + staging_entry_t *se; + int status; + + if (staging_tree == NULL) + return (NULL); + + ssnprintf (key, sizeof (key), "%s/%s/%s", host, type, type_instance); + + se = NULL; + status = c_avl_get (staging_tree, key, (void *) &se); + if (status == 0) + return (se); + + /* insert new entry */ + se = (staging_entry_t *) malloc (sizeof (*se)); + if (se == NULL) + return (NULL); + memset (se, 0, sizeof (*se)); + + sstrncpy (se->key, key, sizeof (se->key)); + se->flags = 0; + + se->vl.values = (value_t *) calloc (values_len, sizeof (*se->vl.values)); + if (se->vl.values == NULL) + { + sfree (se); + return (NULL); + } + se->vl.values_len = values_len; + + se->vl.time = 0; + se->vl.interval = 0; + sstrncpy (se->vl.host, host, sizeof (se->vl.host)); + sstrncpy (se->vl.plugin, "gmond", sizeof (se->vl.plugin)); + sstrncpy (se->vl.type, type, sizeof (se->vl.type)); + if (type_instance != NULL) + sstrncpy (se->vl.type_instance, type_instance, + sizeof (se->vl.type_instance)); + + status = c_avl_insert (staging_tree, se->key, se); + if (status != 0) + { + ERROR ("gmond plugin: c_avl_insert failed."); + sfree (se->vl.values); + sfree (se); + return (NULL); + } + + return (se); +} /* }}} staging_entry_t *staging_entry_get */ + +static int staging_entry_submit (const char *host, const char *name, /* {{{ */ + staging_entry_t *se) +{ + value_list_t vl; + value_t values[se->vl.values_len]; + + if (se->vl.interval == 0) + { + /* No meta data has been received for this metric yet. */ + se->flags = 0; + pthread_mutex_unlock (&staging_lock); + request_meta_data (host, name); + return (0); + } + + se->flags = 0; + + memcpy (values, se->vl.values, sizeof (values)); + memcpy (&vl, &se->vl, sizeof (vl)); + + /* Unlock before calling `plugin_dispatch_values'.. */ + pthread_mutex_unlock (&staging_lock); + + vl.values = values; + + plugin_dispatch_values (&vl); + + return (0); +} /* }}} int staging_entry_submit */ + +static int staging_entry_update (const char *host, const char *name, /* {{{ */ + const char *type, const char *type_instance, + int value_index, int ds_type, value_t value) +{ + const data_set_t *ds; + staging_entry_t *se; + + ds = plugin_get_ds (type); + if (ds == NULL) + { + ERROR ("gmond plugin: Looking up type %s failed.", type); + return (-1); + } + + if (ds->ds_num <= value_index) + { + ERROR ("gmond plugin: Invalid index %i: %s has only %i data source(s).", + value_index, ds->type, ds->ds_num); + return (-1); + } + + pthread_mutex_lock (&staging_lock); + + se = staging_entry_get (host, name, type, type_instance, ds->ds_num); + if (se == NULL) + { + pthread_mutex_unlock (&staging_lock); + ERROR ("gmond plugin: staging_entry_get failed."); + return (-1); + } + if (se->vl.values_len != ds->ds_num) + { + pthread_mutex_unlock (&staging_lock); + return (-1); + } + + if (ds_type == DS_TYPE_COUNTER) + se->vl.values[value_index].counter += value.counter; + else if (ds_type == DS_TYPE_GAUGE) + se->vl.values[value_index].gauge = value.gauge; + se->flags |= (0x01 << value_index); + + DEBUG ("gmond plugin: key = %s; flags = %i;", + se->key, se->flags); + + /* Check if all values have been set and submit if so. */ + if (se->flags == ((0x01 << se->vl.values_len) - 1)) + { + /* `staging_lock' is unlocked in `staging_entry_submit'. */ + staging_entry_submit (host, name, se); + } + else + { + pthread_mutex_unlock (&staging_lock); + } + + return (0); +} /* }}} int staging_entry_update */ + +static int mc_handle_value_msg (Ganglia_value_msg *msg) /* {{{ */ +{ + const char *host; + const char *name; + + value_t value_counter; + value_t value_gauge; + + size_t i; + + /* Fill in `host', `name', `value_counter', and `value_gauge' according to + * the value type, or return with an error. */ + switch (msg->id) /* {{{ */ + { + case gmetric_uint: + { + Ganglia_gmetric_uint msg_uint; + + msg_uint = msg->Ganglia_value_msg_u.gu_int; + + host = msg_uint.metric_id.host; + name = msg_uint.metric_id.name; + value_counter.counter = (counter_t) msg_uint.ui; + value_gauge.gauge = (gauge_t) msg_uint.ui; + break; + } + + case gmetric_string: + { + Ganglia_gmetric_string msg_string; + char *endptr; + + msg_string = msg->Ganglia_value_msg_u.gstr; + + host = msg_string.metric_id.host; + name = msg_string.metric_id.name; + + endptr = NULL; + errno = 0; + value_counter.counter = (counter_t) strtoll (msg_string.str, + &endptr, /* base = */ 0); + if ((endptr == msg_string.str) || (errno != 0)) + value_counter.counter = -1; + + endptr = NULL; + errno = 0; + value_gauge.gauge = (gauge_t) strtod (msg_string.str, &endptr); + if ((endptr == msg_string.str) || (errno != 0)) + value_gauge.gauge = NAN; + + break; + } + + case gmetric_float: + { + Ganglia_gmetric_float msg_float; + + msg_float = msg->Ganglia_value_msg_u.gf; + + host = msg_float.metric_id.host; + name = msg_float.metric_id.name; + value_counter.counter = (counter_t) msg_float.f; + value_gauge.gauge = (gauge_t) msg_float.f; + break; + } + + case gmetric_double: + { + Ganglia_gmetric_double msg_double; + + msg_double = msg->Ganglia_value_msg_u.gd; + + host = msg_double.metric_id.host; + name = msg_double.metric_id.name; + value_counter.counter = (counter_t) msg_double.d; + value_gauge.gauge = (gauge_t) msg_double.d; + break; + } + default: + DEBUG ("gmond plugin: Value type not handled: %i", msg->id); + return (-1); + } /* }}} switch (msg->id) */ + + assert (host != NULL); + assert (name != NULL); + + for (i = 0; i < metric_map_len; i++) + { + if (strcmp (name, metric_map[i].ganglia_name) != 0) + continue; + + return (staging_entry_update (host, name, + metric_map[i].type, metric_map[i].type_instance, + metric_map[i].value_index, metric_map[i].ds_type, + (metric_map[i].ds_type == DS_TYPE_COUNTER) + ? value_counter + : value_gauge)); + } + + DEBUG ("gmond plugin: Cannot find a translation for %s.", name); + + return (-1); +} /* }}} int mc_handle_value_msg */ + +static int mc_handle_metadata_msg (Ganglia_metadata_msg *msg) /* {{{ */ +{ + switch (msg->id) + { + case gmetadata_full: + { + Ganglia_metadatadef msg_meta; + staging_entry_t *se; + const data_set_t *ds; + size_t i; + + msg_meta = msg->Ganglia_metadata_msg_u.gfull; + + if (msg_meta.metric.tmax <= 0) + return (-1); + + for (i = 0; i < metric_map_len; i++) + { + if (strcmp (msg_meta.metric_id.name, metric_map[i].ganglia_name) == 0) + break; + } + + if (i >= metric_map_len) + { + DEBUG ("gmond plugin: Not handling meta data %s.", + msg_meta.metric_id.name); + return (0); + } + + ds = plugin_get_ds (metric_map[i].type); + if (ds == NULL) + { + WARNING ("gmond plugin: Could not find data set %s.", + metric_map[i].type); + return (-1); + } + + DEBUG ("gmond plugin: Received meta data for %s/%s.", + msg_meta.metric_id.host, msg_meta.metric_id.name); + + pthread_mutex_lock (&staging_lock); + se = staging_entry_get (msg_meta.metric_id.host, + msg_meta.metric_id.name, + metric_map[i].type, metric_map[i].type_instance, + ds->ds_num); + if (se != NULL) + se->vl.interval = (int) msg_meta.metric.tmax; + pthread_mutex_unlock (&staging_lock); + + if (se == NULL) + { + ERROR ("gmond plugin: staging_entry_get failed."); + return (-1); + } + + break; + } + + default: + { + return (-1); + } + } + + return (0); +} /* }}} int mc_handle_metadata_msg */ + +static int mc_handle_metric (void *buffer, size_t buffer_size) /* {{{ */ +{ + XDR xdr; + Ganglia_msg_formats format; + + xdrmem_create (&xdr, buffer, buffer_size, XDR_DECODE); + + xdr_Ganglia_msg_formats (&xdr, &format); + xdr_setpos (&xdr, 0); + + switch (format) + { + case gmetric_ushort: + case gmetric_short: + case gmetric_int: + case gmetric_uint: + case gmetric_string: + case gmetric_float: + case gmetric_double: + { + Ganglia_value_msg msg; + + memset (&msg, 0, sizeof (msg)); + if (xdr_Ganglia_value_msg (&xdr, &msg)) + mc_handle_value_msg (&msg); + break; + } + + case gmetadata_full: + case gmetadata_request: + { + Ganglia_metadata_msg msg; + memset (&msg, 0, sizeof (msg)); + if (xdr_Ganglia_metadata_msg (&xdr, &msg)) + mc_handle_metadata_msg (&msg); + break; + } + + default: + DEBUG ("gmond plugin: Unknown format: %i", format); + return (-1); + } /* switch (format) */ + + + return (0); +} /* }}} int mc_handle_metric */ + +static int mc_handle_socket (struct pollfd *p) /* {{{ */ +{ + char buffer[BUFF_SIZE]; + ssize_t buffer_size; + + if ((p->revents & (POLLIN | POLLPRI)) == 0) + { + p->revents = 0; + return (-1); + } + + buffer_size = recv (p->fd, buffer, sizeof (buffer), /* flags = */ 0); + if (buffer_size <= 0) + { + char errbuf[1024]; + ERROR ("gmond plugin: recv failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + p->revents = 0; + return (-1); + } + + mc_handle_metric (buffer, (size_t) buffer_size); + return (0); +} /* }}} int mc_handle_socket */ + +static void *mc_receive_thread (void *arg) /* {{{ */ +{ + socket_entry_t *mc_receive_socket_entries; + int status; + size_t i; + + mc_receive_socket_entries = NULL; + status = create_sockets (&mc_receive_socket_entries, &mc_receive_sockets_num, + "239.2.11.71", "8649", /* listen = */ 1); + if (status != 0) + { + ERROR ("gmond plugin: create_sockets failed."); + return ((void *) -1); + } + + mc_receive_sockets = (struct pollfd *) calloc (mc_receive_sockets_num, + sizeof (*mc_receive_sockets)); + if (mc_receive_sockets == NULL) + { + ERROR ("gmond plugin: calloc failed."); + for (i = 0; i < mc_receive_sockets_num; i++) + close (mc_receive_socket_entries[i].fd); + free (mc_receive_socket_entries); + mc_receive_socket_entries = NULL; + mc_receive_sockets_num = 0; + return ((void *) -1); + } + + for (i = 0; i < mc_receive_sockets_num; i++) + { + mc_receive_sockets[i].fd = mc_receive_socket_entries[i].fd; + mc_receive_sockets[i].events = POLLIN | POLLPRI; + mc_receive_sockets[i].revents = 0; + } + + while (mc_receive_thread_loop != 0) + { + status = poll (mc_receive_sockets, mc_receive_sockets_num, -1); + if (status <= 0) + { + char errbuf[1024]; + if (errno == EINTR) + continue; + ERROR ("gmond plugin: poll failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + break; + } + + for (i = 0; i < mc_receive_sockets_num; i++) + { + if (mc_receive_sockets[i].revents != 0) + mc_handle_socket (mc_receive_sockets + i); + } + } /* while (mc_receive_thread_loop != 0) */ + + return ((void *) 0); +} /* }}} void *mc_receive_thread */ + +static int mc_receive_thread_start (void) /* {{{ */ +{ + int status; + + if (mc_receive_thread_running != 0) + return (-1); + + mc_receive_thread_loop = 1; + + status = pthread_create (&mc_receive_thread_id, /* attr = */ NULL, + mc_receive_thread, /* args = */ NULL); + if (status != 0) + { + ERROR ("gmond plugin: Starting receive thread failed."); + mc_receive_thread_loop = 0; + return (-1); + } + + mc_receive_thread_running = 1; + return (0); +} /* }}} int start_receive_thread */ + +static int mc_receive_thread_stop (void) /* {{{ */ +{ + if (mc_receive_thread_running == 0) + return (-1); + + mc_receive_thread_loop = 0; + + INFO ("gmond plugin: Stopping receive thread."); + pthread_kill (mc_receive_thread_id, SIGTERM); + pthread_join (mc_receive_thread_id, /* return value = */ NULL); + memset (&mc_receive_thread_id, 0, sizeof (mc_receive_thread_id)); + + mc_receive_thread_running = 0; + + return (0); +} /* }}} int mc_receive_thread_stop */ + +/* + * TODO: Config: + * + * + * MCReceiveFrom "239.2.11.71" "8649" + * MCSendTo "239.2.11.71" "8649" + * + * Type "load" + * [TypeInstance "foo"] + * [Index 0] + * + * + */ + +static int gmond_init (void) +{ + create_sockets (&mc_send_sockets, &mc_send_sockets_num, + "239.2.11.71", "8649", /* listen = */ 0); + + staging_tree = c_avl_create ((void *) strcmp); + if (staging_tree == NULL) + { + ERROR ("gmond plugin: c_avl_create failed."); + return (-1); + } + + mc_receive_thread_start (); + + return (0); +} /* int gmond_init */ + +static int gmond_shutdown (void) +{ + size_t i; + + mc_receive_thread_stop (); + + pthread_mutex_lock (&mc_send_sockets_lock); + for (i = 0; i < mc_send_sockets_num; i++) + { + close (mc_send_sockets[i].fd); + mc_send_sockets[i].fd = -1; + } + sfree (mc_send_sockets); + mc_send_sockets_num = 0; + pthread_mutex_unlock (&mc_send_sockets_lock); + + + return (0); +} /* int gmond_shutdown */ + +void module_register (void) +{ + plugin_register_init ("gmond", gmond_init); + plugin_register_shutdown ("gmond", gmond_shutdown); +} + +/* vim: set sw=2 sts=2 et fdm=marker : */