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 int send_buffer_fill;
58 static pthread_mutex_t send_lock = PTHREAD_MUTEX_INITIALIZER;
60 static int http_init(void) /* {{{ */
63 curl = curl_easy_init ();
67 ERROR ("curl plugin: curl_easy_init failed.");
71 struct curl_slist *headers=NULL;
73 curl_easy_setopt (curl, CURLOPT_USERAGENT, PACKAGE_NAME"/"PACKAGE_VERSION);
75 headers = curl_slist_append(headers, "Accept: */*");
76 headers = curl_slist_append(headers, "Content-Type: text/plain");
77 curl_easy_setopt (curl, CURLOPT_HTTPHEADER, headers);
79 curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, curl_errbuf);
80 curl_easy_setopt (curl, CURLOPT_URL, location);
84 size_t credentials_size;
86 credentials_size = strlen (user) + 2;
88 credentials_size += strlen (pass);
90 credentials = (char *) malloc (credentials_size);
91 if (credentials == NULL)
93 ERROR ("curl plugin: malloc failed.");
97 ssnprintf (credentials, credentials_size, "%s:%s",
98 user, (pass == NULL) ? "" : pass);
99 curl_easy_setopt (curl, CURLOPT_USERPWD, credentials);
100 curl_easy_setopt (curl, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
106 static int http_value_list_to_string (char *buffer, int buffer_len, /* {{{ */
107 const data_set_t *ds, const value_list_t *vl)
113 assert (0 == strcmp (ds->type, vl->type));
115 memset (buffer, '\0', buffer_len);
117 for (i = 0; i < ds->ds_num; i++)
119 if ((ds->ds[i].type != DS_TYPE_COUNTER)
120 && (ds->ds[i].type != DS_TYPE_GAUGE)
121 && (ds->ds[i].type != DS_TYPE_DERIVE)
122 && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
126 if (ds->ds[i].type == DS_TYPE_GAUGE)
128 status = ssnprintf (buffer + offset, buffer_len - offset,
129 ":%lf", vl->values[i].gauge);
131 else if ((ds->ds[i].type == DS_TYPE_COUNTER)
132 || (ds->ds[i].type == DS_TYPE_ABSOLUTE))
134 status = ssnprintf (buffer + offset,
137 (ds->ds[i].type == DS_TYPE_COUNTER)
138 ? vl->values[i].counter
139 : vl->values[i].absolute);
141 else if (ds->ds[i].type == DS_TYPE_DERIVE)
143 status = ssnprintf (buffer + offset,
146 vl->values[i].derive);
149 if ((status < 1) || (status >= (buffer_len - offset)))
153 } /* for ds->ds_num */
156 } /* }}} int http_value_list_to_string */
158 static int http_config (const char *key, const char *value) /* {{{ */
160 if (strcasecmp ("URL", key) == 0)
162 if (location != NULL)
164 location = strdup (value);
165 if (location != NULL)
167 int len = strlen (location);
168 while ((len > 0) && (location[len - 1] == '/'))
171 location[len] = '\0';
180 else if (strcasecmp ("User", key) == 0)
184 user = strdup (value);
187 int len = strlen (user);
188 while ((len > 0) && (user[len - 1] == '/'))
200 else if (strcasecmp ("Password", key) == 0)
204 pass = strdup (value);
207 int len = strlen (pass);
208 while ((len > 0) && (pass[len - 1] == '/'))
225 } /* }}} int http_config */
227 static void http_init_buffer (void) /* {{{ */
229 memset (send_buffer, 0, sizeof (send_buffer));
230 send_buffer_fill = 0;
231 } /* }}} http_init_buffer */
233 static int http_send_buffer (char *buffer) /* {{{ */
236 curl_easy_setopt (curl, CURLOPT_POSTFIELDS, buffer);
237 //status = curl_easy_perform (curl);
240 ERROR ("http plugin: curl_easy_perform failed with staus %i: %s",
241 status, curl_errbuf);
244 } /* }}} http_send_buffer */
246 static int http_flush_buffer (void) /* {{{ */
249 DEBUG ("http plugin: flushing buffer:\n%s", send_buffer);
251 status = http_send_buffer (send_buffer);
255 } /* }}} http_flush_buffer */
257 static int http_write (const data_set_t *ds, const value_list_t *vl, /* {{{ */
258 user_data_t __attribute__((unused)) *user_data)
266 if (0 != strcmp (ds->type, vl->type)) {
267 ERROR ("http plugin: DS type does not match value list type");
271 status = format_name( key, sizeof(key), vl->host, vl->plugin,
272 vl->plugin_instance, vl->type, vl->type_instance );
275 ERROR ("http plugin: error with format_name");
279 status = http_value_list_to_string (values, sizeof (values), ds, vl);
282 ERROR ("http plugin: error with http_value_list_to_string");
287 pthread_mutex_lock (&send_lock);
289 status = ssnprintf (send_buffer + send_buffer_fill, sizeof (send_buffer) - send_buffer_fill,
290 "PUTVAL %s interval=%i %u%s\n",
291 key, interval_g, vl->time, values);
292 send_buffer_fill += status;
294 if ((sizeof (send_buffer) - send_buffer_fill) < (sizeof(key) + sizeof(values)))
296 status = http_flush_buffer();
302 pthread_mutex_unlock (&send_lock);
307 } /* }}} int http_write */
309 static int http_shutdown (void) /* {{{ */
312 curl_easy_cleanup(curl);
316 void module_register (void) /* {{{ */
318 plugin_register_init("http", http_init);
319 plugin_register_config ("http", http_config,
320 config_keys, config_keys_num);
321 plugin_register_write ("http", http_write, /* user_data = */ NULL);
322 plugin_register_shutdown("http", http_shutdown);
323 } /* }}} void module_register */
325 /* vim: set fdm=marker sw=8 ts=8 tw=78 : */