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)
112 gauge_t *rates = NULL;
114 assert (0 == strcmp (ds->type, vl->type));
116 memset (buffer, '\0', buffer_len);
118 for (i = 0; i < ds->ds_num; i++)
120 if ((ds->ds[i].type != DS_TYPE_COUNTER)
121 && (ds->ds[i].type != DS_TYPE_GAUGE)
122 && (ds->ds[i].type != DS_TYPE_DERIVE)
123 && (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)
134 rates = uc_get_rate (ds, vl);
137 WARNING ("csv plugin: "
138 "uc_get_rate failed.");
141 status = ssnprintf (buffer + offset,
145 else if (ds->ds[i].type == DS_TYPE_DERIVE)
147 status = ssnprintf (buffer + offset,
150 vl->values[i].derive);
152 else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
154 status = ssnprintf (buffer + offset,
157 vl->values[i].absolute);
160 if ((status < 1) || (status >= (buffer_len - offset)))
167 } /* for ds->ds_num */
171 } /* }}} int http_value_list_to_string */
173 static int http_config (const char *key, const char *value) /* {{{ */
175 if (strcasecmp ("URL", key) == 0)
177 if (location != NULL)
179 location = strdup (value);
180 if (location != NULL)
182 int len = strlen (location);
183 while ((len > 0) && (location[len - 1] == '/'))
186 location[len] = '\0';
195 else if (strcasecmp ("User", key) == 0)
199 user = strdup (value);
202 int len = strlen (user);
203 while ((len > 0) && (user[len - 1] == '/'))
215 else if (strcasecmp ("Password", key) == 0)
219 pass = strdup (value);
222 int len = strlen (pass);
223 while ((len > 0) && (pass[len - 1] == '/'))
240 } /* }}} int http_config */
242 static void http_init_buffer (void) /* {{{ */
244 memset (send_buffer, 0, sizeof (send_buffer));
245 send_buffer_fill = 0;
246 } /* }}} http_init_buffer */
248 static int http_send_buffer (char *buffer) /* {{{ */
251 curl_easy_setopt (curl, CURLOPT_POSTFIELDS, buffer);
252 //status = curl_easy_perform (curl);
255 ERROR ("http plugin: curl_easy_perform failed with staus %i: %s",
256 status, curl_errbuf);
259 } /* }}} http_send_buffer */
261 static int http_flush_buffer (void) /* {{{ */
264 DEBUG ("http plugin: flushing buffer:\n%s", send_buffer);
266 status = http_send_buffer (send_buffer);
270 } /* }}} http_flush_buffer */
272 static int http_write (const data_set_t *ds, const value_list_t *vl, /* {{{ */
273 user_data_t __attribute__((unused)) *user_data)
281 if (0 != strcmp (ds->type, vl->type)) {
282 ERROR ("http plugin: DS type does not match value list type");
286 status = format_name( key, sizeof(key), vl->host, vl->plugin,
287 vl->plugin_instance, vl->type, vl->type_instance );
290 ERROR ("http plugin: error with format_name");
294 status = http_value_list_to_string (values, sizeof (values), ds, vl);
297 ERROR ("http plugin: error with http_value_list_to_string");
302 pthread_mutex_lock (&send_lock);
304 status = ssnprintf (send_buffer + send_buffer_fill, sizeof (send_buffer) - send_buffer_fill,
305 "PUTVAL %s interval=%i %u%s\n",
306 key, interval_g, vl->time, values);
307 send_buffer_fill += status;
309 if ((sizeof (send_buffer) - send_buffer_fill) < (sizeof(key) + sizeof(values)))
311 status = http_flush_buffer();
317 pthread_mutex_unlock (&send_lock);
322 } /* }}} int http_write */
324 static int http_shutdown (void) /* {{{ */
327 curl_easy_cleanup(curl);
331 void module_register (void) /* {{{ */
333 plugin_register_init("http", http_init);
334 plugin_register_config ("http", http_config,
335 config_keys, config_keys_num);
336 plugin_register_write ("http", http_write, /* user_data = */ NULL);
337 plugin_register_shutdown("http", http_shutdown);
338 } /* }}} void module_register */
340 /* vim: set fdm=marker sw=8 ts=8 tw=78 : */