2 * collectd - src/write_redis.c
3 * Copyright (C) 2010 Florian 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 Forster <ff at octo.it>
30 #include "configfile.h"
37 char name[DATA_MAX_NAME_LEN];
46 typedef struct wr_node_s wr_node_t;
51 static int wr_write (const data_set_t *ds, /* {{{ */
52 const value_list_t *vl,
55 wr_node_t *node = ud->data;
64 status = FORMAT_VL (ident, sizeof (ident), vl);
67 ssnprintf (key, sizeof (key), "collectd/%s", ident);
69 memset (value, 0, sizeof (value));
70 value_size = sizeof (value);
71 value_ptr = &value[0];
72 format_values(value_ptr, value_size, ds, vl, 0);
74 pthread_mutex_lock (&node->lock);
76 if (node->conn == NULL)
78 node->conn = credis_connect (node->host, node->port, node->timeout);
79 if (node->conn == NULL)
81 ERROR ("write_redis plugin: Connecting to host \"%s\" (port %i) failed.",
82 (node->host != NULL) ? node->host : "localhost",
83 (node->port != 0) ? node->port : 6379);
84 pthread_mutex_unlock (&node->lock);
89 /* "credis_zadd" doesn't handle a NULL pointer gracefully, so I'd rather
90 * have a meaningful assertion message than a normal segmentation fault. */
91 assert (node->conn != NULL);
92 status = credis_zadd (node->conn, key, (double) vl->time, value);
94 credis_sadd (node->conn, "collectd/values", ident);
96 pthread_mutex_unlock (&node->lock);
99 } /* }}} int wr_write */
101 static void wr_config_free (void *ptr) /* {{{ */
103 wr_node_t *node = ptr;
108 if (node->conn != NULL)
110 credis_close (node->conn);
116 } /* }}} void wr_config_free */
118 static int wr_config_node (oconfig_item_t *ci) /* {{{ */
124 node = malloc (sizeof (*node));
127 memset (node, 0, sizeof (*node));
130 node->timeout = 1000;
132 pthread_mutex_init (&node->lock, /* attr = */ NULL);
134 status = cf_util_get_string_buffer (ci, node->name, sizeof (node->name));
141 for (i = 0; i < ci->children_num; i++)
143 oconfig_item_t *child = ci->children + i;
145 if (strcasecmp ("Host", child->key) == 0)
146 status = cf_util_get_string (child, &node->host);
147 else if (strcasecmp ("Port", child->key) == 0)
149 status = cf_util_get_port_number (child);
156 else if (strcasecmp ("Timeout", child->key) == 0)
157 status = cf_util_get_int (child, &node->timeout);
159 WARNING ("write_redis plugin: Ignoring unknown config option \"%s\".",
164 } /* for (i = 0; i < ci->children_num; i++) */
168 char cb_name[DATA_MAX_NAME_LEN];
171 ssnprintf (cb_name, sizeof (cb_name), "write_redis/%s", node->name);
174 ud.free_func = wr_config_free;
176 status = plugin_register_write (cb_name, wr_write, &ud);
180 wr_config_free (node);
183 } /* }}} int wr_config_node */
185 static int wr_config (oconfig_item_t *ci) /* {{{ */
189 for (i = 0; i < ci->children_num; i++)
191 oconfig_item_t *child = ci->children + i;
193 if (strcasecmp ("Node", child->key) == 0)
194 wr_config_node (child);
196 WARNING ("write_redis plugin: Ignoring unknown "
197 "configuration option \"%s\" at top level.", child->key);
201 } /* }}} int wr_config */
203 void module_register (void)
205 plugin_register_complex_config ("write_redis", wr_config);
208 /* vim: set sw=2 sts=2 tw=78 et fdm=marker : */