2 * collectd - src/http.c
3 * Copyright (C) 2007-2009 Florian octo Forster
4 * Copyright (C) 2009 Doug MacEachern
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at verplant.org>
21 * Doug MacEachern <dougm@hyperic.com>
27 #include "utils_cache.h"
28 #include "utils_parse_option.h"
34 #include <curl/curl.h>
39 static const char *config_keys[] =
41 "URL", "User", "Password"
43 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
45 static char *location = NULL;
52 char curl_errbuf[CURL_ERROR_SIZE];
54 #define SEND_BUFFER_SIZE 4096
55 static char send_buffer[SEND_BUFFER_SIZE];
56 static char *send_buffer_ptr;
57 static int send_buffer_fill;
59 static pthread_mutex_t send_lock = PTHREAD_MUTEX_INITIALIZER;
61 static int http_init(void) /* {{{ */
64 curl = curl_easy_init ();
68 ERROR ("curl plugin: curl_easy_init failed.");
72 struct curl_slist *headers=NULL;
74 curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
76 headers = curl_slist_append(headers, "Accept: */*");
77 headers = curl_slist_append(headers, "Content-Type: text/plain");
78 curl_easy_setopt (curl, CURLOPT_HTTPHEADER, headers);
80 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, curl_errbuf);
81 curl_easy_setopt (curl, CURLOPT_URL, location);
85 size_t credentials_size;
87 credentials_size = strlen (user) + 2;
89 credentials_size += strlen (pass);
91 credentials = (char *) malloc (credentials_size);
92 if (credentials == NULL)
94 ERROR ("curl plugin: malloc failed.");
98 ssnprintf (credentials, credentials_size, "%s:%s",
99 user, (pass == NULL) ? "" : pass);
100 curl_easy_setopt (curl, CURLOPT_USERPWD, credentials);
101 curl_easy_setopt (curl, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
107 static int http_value_list_to_string (char *buffer, int buffer_len, /* {{{ */
108 const data_set_t *ds, const value_list_t *vl)
113 gauge_t *rates = NULL;
115 assert (0 == strcmp (ds->type, vl->type));
117 memset (buffer, '\0', buffer_len);
119 for (i = 0; i < ds->ds_num; i++)
121 if ((ds->ds[i].type != DS_TYPE_COUNTER)
122 && (ds->ds[i].type != DS_TYPE_GAUGE)
123 && (ds->ds[i].type != DS_TYPE_DERIVE)
124 && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
127 if (ds->ds[i].type == DS_TYPE_GAUGE)
129 status = ssnprintf (buffer + offset, buffer_len - offset,
130 ":%lf", vl->values[i].gauge);
132 else if (ds->ds[i].type == DS_TYPE_COUNTER)
135 rates = uc_get_rate (ds, vl);
138 WARNING ("csv plugin: "
139 "uc_get_rate failed.");
142 status = ssnprintf (buffer + offset,
146 else if (ds->ds[i].type == DS_TYPE_DERIVE)
148 status = ssnprintf (buffer + offset,
151 vl->values[i].derive);
153 else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
155 status = ssnprintf (buffer + offset,
158 vl->values[i].absolute);
161 if ((status < 1) || (status >= (buffer_len - offset)))
168 } /* for ds->ds_num */
172 } /* }}} int http_value_list_to_string */
174 static int http_config (const char *key, const char *value) /* {{{ */
176 if (strcasecmp ("URL", key) == 0)
178 if (location != NULL)
180 location = strdup (value);
181 if (location != NULL)
183 int len = strlen (location);
184 while ((len > 0) && (location[len - 1] == '/'))
187 location[len] = '\0';
196 else if (strcasecmp ("User", key) == 0)
200 user = strdup (value);
203 int len = strlen (user);
204 while ((len > 0) && (user[len - 1] == '/'))
216 else if (strcasecmp ("Password", key) == 0)
220 pass = strdup (value);
223 int len = strlen (pass);
224 while ((len > 0) && (pass[len - 1] == '/'))
241 } /* }}} int http_config */
243 static void http_init_buffer (void) /* {{{ */
245 memset (send_buffer, 0, sizeof (send_buffer));
246 send_buffer_ptr = send_buffer;
247 send_buffer_fill = 0;
248 } /* }}} http_init_buffer */
250 static int http_send_buffer (char *buffer) /* {{{ */
253 curl_easy_setopt (curl, CURLOPT_POSTFIELDS, buffer);
254 //status = curl_easy_perform (curl);
257 ERROR ("http plugin: curl_easy_perform failed with staus %i: %s",
258 status, curl_errbuf);
261 } /* }}} http_send_buffer */
263 static int http_flush_buffer (void) /* {{{ */
266 DEBUG ("http plugin: flushing buffer:\n%s", send_buffer);
268 status = http_send_buffer (send_buffer);
272 } /* }}} http_flush_buffer */
274 static int http_write (const data_set_t *ds, const value_list_t *vl, /* {{{ */
275 user_data_t __attribute__((unused)) *user_data)
283 if (0 != strcmp (ds->type, vl->type)) {
284 ERROR ("http plugin: DS type does not match value list type");
288 status = format_name( key, sizeof(key), vl->host, vl->plugin,
289 vl->plugin_instance, vl->type, vl->type_instance );
292 ERROR ("http plugin: error with format_name");
296 status = http_value_list_to_string (values, sizeof (values), ds, vl);
299 ERROR ("http plugin: error with http_value_list_to_string");
304 pthread_mutex_lock (&send_lock);
306 status = ssnprintf (send_buffer + send_buffer_fill, sizeof (send_buffer) - send_buffer_fill,
307 "PUTVAL %s interval=%i %u%s\n",
308 key, interval_g, vl->time, values);
309 send_buffer_fill += status;
311 if ((sizeof (send_buffer) - send_buffer_fill) < (sizeof(key) + sizeof(values)))
313 status = http_flush_buffer();
319 pthread_mutex_unlock (&send_lock);
324 } /* }}} int http_write */
326 static int http_shutdown (void) /* {{{ */
329 curl_easy_cleanup(curl);
333 void module_register (void) /* {{{ */
335 plugin_register_init("http", http_init);
336 plugin_register_config ("http", http_config,
337 config_keys, config_keys_num);
338 plugin_register_write ("http", http_write, /* user_data = */ NULL);
339 plugin_register_shutdown("http", http_shutdown);
340 } /* }}} void module_register */
342 /* vim: set fdm=marker sw=8 ts=8 tw=78 : */