![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/backend/collectd/unixsock.c b/src/backend/collectd/unixsock.c
+++ /dev/null
@@ -1,429 +0,0 @@
-/*
- * SysDB - src/backend/collectd/unixsock.c
- * Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
- * 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 <assert.h>
-
-#include <errno.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-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: <last_update> <hostname>
- * 1: <plugin>
- * 2: <type> */
- 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: <Instance NAME>");
- 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 <Instance %s>.",
- 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 <sh@tokkee.org>");
- 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 : */
-