X-Git-Url: https://git.tokkee.org/?p=sysdb.git;a=blobdiff_plain;f=src%2Fbackend%2Fcollectd%2Funixsock.c;fp=src%2Fbackend%2Fcollectd%2Funixsock.c;h=0000000000000000000000000000000000000000;hp=c0d023ed6b85dc2d2c87320123b0e0a44f968b5b;hb=dc433b9c8b4187faee94d972b333a91b22eaf9e0;hpb=8b3452e508a38e9a28aa82a4636a3dbe03d32e65 diff --git a/src/backend/collectd/unixsock.c b/src/backend/collectd/unixsock.c deleted file mode 100644 index c0d023e..0000000 --- a/src/backend/collectd/unixsock.c +++ /dev/null @@ -1,429 +0,0 @@ -/* - * SysDB - src/backend/collectd/unixsock.c - * Copyright (C) 2012 Sebastian 'tokkee' Harl - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#if HAVE_CONFIG_H -# include "config.h" -#endif /* HAVE_CONFIG_H */ - -#include "sysdb.h" -#include "core/plugin.h" -#include "core/store.h" -#include "utils/error.h" -#include "utils/unixsock.h" - -#include "liboconfig/utils.h" - -#include - -#include - -#include -#include -#include - -SDB_PLUGIN_MAGIC; - -/* - * private data types - */ - -typedef struct { - char *current_host; - sdb_time_t current_timestamp; - int metrics_updated; - int metrics_failed; -} sdb_collectd_state_t; -#define SDB_COLLECTD_STATE_INIT { NULL, 0, 0, 0 } - -/* - * private helper functions - */ - -/* store the specified host-name (once per iteration) */ -static int -sdb_collectd_store_host(sdb_collectd_state_t *state, - const char *hostname, sdb_time_t last_update) -{ - int status; - - if (last_update > state->current_timestamp) - state->current_timestamp = last_update; - - if (state->current_host && (! strcasecmp(state->current_host, hostname))) - return 0; - /* else: first/new host */ - - if (state->current_host) { - sdb_log(SDB_LOG_DEBUG, "collectd::unixsock backend: Added/updated " - "%i metric%s (%i failed) for host '%s'.", - state->metrics_updated, state->metrics_updated == 1 ? "" : "s", - state->metrics_failed, state->current_host); - state->metrics_updated = state->metrics_failed = 0; - free(state->current_host); - } - - state->current_host = strdup(hostname); - if (! state->current_host) { - char errbuf[1024]; - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to allocate " - "string buffer: %s", - sdb_strerror(errno, errbuf, sizeof(errbuf))); - return -1; - } - - status = sdb_store_host(hostname, last_update); - - if (status < 0) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to " - "store/update host '%s'.", hostname); - return -1; - } - else if (status > 0) /* value too old */ - return 0; - - sdb_log(SDB_LOG_DEBUG, "collectd::unixsock backend: Added/updated " - "host '%s' (last update timestamp = %"PRIsdbTIME").", - hostname, last_update); - return 0; -} /* sdb_collectd_store_host */ - -static int -sdb_collectd_add_metrics(const char *hostname, char *plugin, char *type, - sdb_time_t last_update) -{ - char name[strlen(plugin) + strlen(type) + 2]; - char *plugin_instance, *type_instance; - - sdb_data_t data = { SDB_TYPE_STRING, { .string = NULL } }; - - int status; - - snprintf(name, sizeof(name), "%s/%s", plugin, type); - - status = sdb_store_metric(hostname, name, NULL, last_update); - if (status < 0) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to " - "store/update metric '%s/%s'.", hostname, name); - return -1; - } - - plugin_instance = strchr(plugin, '-'); - if (plugin_instance) { - *plugin_instance = '\0'; - ++plugin_instance; - - data.data.string = plugin_instance; - sdb_store_metric_attr(hostname, name, - "plugin_instance", &data, last_update); - } - - type_instance = strchr(type, '-'); - if (type_instance) { - *type_instance = '\0'; - ++type_instance; - - data.data.string = type_instance; - sdb_store_metric_attr(hostname, name, - "type_instance", &data, last_update); - } - - data.data.string = plugin; - sdb_store_metric_attr(hostname, name, "plugin", &data, last_update); - data.data.string = type; - sdb_store_metric_attr(hostname, name, "type", &data, last_update); - return 0; -} /* sdb_collectd_add_metrics */ - -static int -sdb_collectd_get_data(sdb_unixsock_client_t __attribute__((unused)) *client, - size_t n, sdb_data_t *data, sdb_object_t *user_data) -{ - sdb_collectd_state_t *state; - sdb_data_t last_update; - - char *hostname; - char *plugin; - char *type; - - assert(user_data); - - /* 0: - * 1: - * 2: */ - assert(n == 3); - assert((data[0].type == SDB_TYPE_STRING) - && (data[1].type == SDB_TYPE_STRING) - && (data[2].type == SDB_TYPE_STRING)); - - hostname = data[0].data.string; - plugin = data[1].data.string; - type = data[2].data.string; - - hostname = strchr(hostname, ' '); - if (! hostname) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Expected to find " - "a space character in the LISTVAL response"); - return -1; - } - *hostname = '\0'; - ++hostname; - - if (sdb_data_parse(data[0].data.string, SDB_TYPE_DATETIME, &last_update)) { - char errbuf[1024]; - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to parse " - "timestamp '%s' returned by LISTVAL: %s", data[0].data.string, - sdb_strerror(errno, errbuf, sizeof(errbuf))); - return -1; - } - - state = SDB_OBJ_WRAPPER(user_data)->data; - if (sdb_collectd_store_host(state, hostname, last_update.data.datetime)) - return -1; - - if (sdb_collectd_add_metrics(hostname, plugin, type, - last_update.data.datetime)) - ++state->metrics_failed; - else - ++state->metrics_updated; - return 0; -} /* sdb_collectd_get_data */ - -/* - * plugin API - */ - -static int -sdb_collectd_init(sdb_object_t *user_data) -{ - sdb_unixsock_client_t *client; - - if (! user_data) - return -1; - - client = SDB_OBJ_WRAPPER(user_data)->data; - if (sdb_unixsock_client_connect(client)) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: " - "Failed to connect to collectd."); - return -1; - } - - sdb_log(SDB_LOG_INFO, "collectd::unixsock backend: Successfully " - "connected to collectd @ %s.", - sdb_unixsock_client_path(client)); - return 0; -} /* sdb_collectd_init */ - -static int -sdb_collectd_shutdown(__attribute__((unused)) sdb_object_t *user_data) -{ - if (! user_data) - return -1; - - sdb_unixsock_client_destroy(SDB_OBJ_WRAPPER(user_data)->data); - SDB_OBJ_WRAPPER(user_data)->data = NULL; - return 0; -} /* sdb_collectd_shutdown */ - -static int -sdb_collectd_collect(sdb_object_t *user_data) -{ - sdb_unixsock_client_t *client; - - char buffer[1024]; - char *line; - char *msg; - - char *endptr = NULL; - long int count; - - sdb_collectd_state_t state = SDB_COLLECTD_STATE_INIT; - sdb_object_wrapper_t state_obj = SDB_OBJECT_WRAPPER_STATIC(&state); - - if (! user_data) - return -1; - - client = SDB_OBJ_WRAPPER(user_data)->data; - - if (sdb_unixsock_client_send(client, "LISTVAL") <= 0) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to send " - "LISTVAL command to collectd @ %s.", - sdb_unixsock_client_path(client)); - return -1; - } - - line = sdb_unixsock_client_recv(client, buffer, sizeof(buffer)); - if (! line) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to read " - "status of LISTVAL command from collectd @ %s.", - sdb_unixsock_client_path(client)); - return -1; - } - - msg = strchr(line, ' '); - if (msg) { - *msg = '\0'; - ++msg; - } - - errno = 0; - count = strtol(line, &endptr, /* base */ 0); - if (errno || (line == endptr)) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to parse " - "status of LISTVAL command from collectd @ %s.", - sdb_unixsock_client_path(client)); - return -1; - } - - if (count < 0) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to get " - "value list from collectd @ %s: %s", - sdb_unixsock_client_path(client), - msg ? msg : line); - return -1; - } - - if (sdb_unixsock_client_process_lines(client, sdb_collectd_get_data, - SDB_OBJ(&state_obj), count, /* delim */ "/", - /* column count = */ 3, - SDB_TYPE_STRING, SDB_TYPE_STRING, SDB_TYPE_STRING)) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed " - "to read response from collectd @ %s.", - sdb_unixsock_client_path(client)); - return -1; - } - - if (state.current_host) { - sdb_log(SDB_LOG_DEBUG, "collectd::unixsock backend: Added/updated " - "%i metric%s (%i failed) for host '%s'.", - state.metrics_updated, state.metrics_updated == 1 ? "" : "s", - state.metrics_failed, state.current_host); - free(state.current_host); - } - return 0; -} /* sdb_collectd_collect */ - -static int -sdb_collectd_config_instance(oconfig_item_t *ci) -{ - char *name = NULL; - char *socket_path = NULL; - - sdb_object_t *user_data; - sdb_unixsock_client_t *client; - - int i; - - if (oconfig_get_string(ci, &name)) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Instance requires " - "a single string argument\n\tUsage: "); - return -1; - } - - for (i = 0; i < ci->children_num; ++i) { - oconfig_item_t *child = ci->children + i; - - if (! strcasecmp(child->key, "Socket")) - oconfig_get_string(child, &socket_path); - else - sdb_log(SDB_LOG_WARNING, "collectd::unixsock backend: Ignoring " - "unknown config option '%s' inside .", - child->key, name); - } - - if (! socket_path) { - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Instance '%s' " - "missing the 'Socket' option.", name); - return -1; - } - - client = sdb_unixsock_client_create(socket_path); - if (! client) { - char errbuf[1024]; - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to create " - "unixsock client: %s", - sdb_strerror(errno, errbuf, sizeof(errbuf))); - return -1; - } - - user_data = sdb_object_create_wrapper("unixsock-client", client, - (void (*)(void *))sdb_unixsock_client_destroy); - if (! user_data) { - sdb_unixsock_client_destroy(client); - sdb_log(SDB_LOG_ERR, "collectd::unixsock backend: Failed to allocate " - "sdb_object_t"); - return -1; - } - - sdb_plugin_register_init(name, sdb_collectd_init, user_data); - sdb_plugin_register_shutdown(name, sdb_collectd_shutdown, user_data); - - sdb_plugin_register_collector(name, sdb_collectd_collect, - /* interval */ NULL, user_data); - - /* pass control to the list */ - sdb_object_deref(user_data); - return 0; -} /* sdb_collectd_config_instance */ - -static int -sdb_collectd_config(oconfig_item_t *ci) -{ - int i; - - if (! ci) /* nothing to do to deconfigure this plugin */ - return 0; - - for (i = 0; i < ci->children_num; ++i) { - oconfig_item_t *child = ci->children + i; - - if (! strcasecmp(child->key, "Instance")) - sdb_collectd_config_instance(child); - else - sdb_log(SDB_LOG_WARNING, "collectd::unixsock backend: Ignoring " - "unknown config option '%s'.", child->key); - } - return 0; -} /* sdb_collectd_config */ - -int -sdb_module_init(sdb_plugin_info_t *info) -{ - sdb_plugin_set_info(info, SDB_PLUGIN_INFO_DESC, - "backend accessing the system statistics collection daemon " - "throught the UNIXSOCK interface"); - sdb_plugin_set_info(info, SDB_PLUGIN_INFO_COPYRIGHT, - "Copyright (C) 2012 Sebastian 'tokkee' Harl "); - sdb_plugin_set_info(info, SDB_PLUGIN_INFO_LICENSE, "BSD"); - sdb_plugin_set_info(info, SDB_PLUGIN_INFO_VERSION, SDB_VERSION); - sdb_plugin_set_info(info, SDB_PLUGIN_INFO_PLUGIN_VERSION, SDB_VERSION); - - sdb_plugin_register_config(sdb_collectd_config); - return 0; -} /* sdb_version_extra */ - -/* vim: set tw=78 sw=4 ts=4 noexpandtab : */ -