4 ** Copyright (c) <2009> <sebastien.pahl@dotcloud.com>
6 ** Permission is hereby granted, free of charge, to any person
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11 ** copies of the Software, and to permit persons to whom the
12 ** Software is furnished to do so, subject to the following
15 ** The above copyright notice and this permission notice shall be
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18 ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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21 ** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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25 ** OTHER DEALINGS IN THE SOFTWARE.
38 #include "utils_format_json.h"
41 #include <amqp_framing.h>
43 /* Defines for the delivery mode. I have no idea why they're not defined by the
45 #define AMQP_DM_VOLATILE 1
46 #define AMQP_DM_PERSISTENT 2
48 static int port = 5672;
49 static char *host = NULL;
50 static char *vhost = NULL;
51 static char *user = NULL;
52 static char *password = NULL;
53 static char *exchange = NULL;
54 static char *routingkey = NULL;
55 static uint8_t delivery_mode = AMQP_DM_VOLATILE;
56 static _Bool store_rates = 0;
58 static amqp_connection_state_t amqp_conn = NULL;
59 static pthread_mutex_t amqp_conn_lock = PTHREAD_MUTEX_INITIALIZER;
61 static const char *config_keys[] =
74 static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
76 static int config_set(char **var, const char *value)
79 if ((*var = strdup(value)) == NULL)
84 static int config(const char *key, const char *value)
86 if (strcasecmp(key, "host") == 0)
87 return (config_set(&host, value));
88 else if(strcasecmp(key, "port") == 0)
92 tmp = service_name_to_port_number (value);
95 ERROR ("AMQP plugin: Cannot parse `%s' as a "
96 "service name (port number).", value);
103 else if (strcasecmp(key, "vhost") == 0)
104 return (config_set(&vhost, value));
105 else if (strcasecmp(key, "user") == 0)
106 return (config_set(&user, value));
107 else if (strcasecmp(key, "password") == 0)
108 return (config_set(&password, value));
109 else if (strcasecmp(key, "exchange") == 0)
110 return (config_set(&exchange, value));
111 else if (strcasecmp(key, "routingkey") == 0)
112 return (config_set(&routingkey, value));
113 else if (strcasecmp ("Persistent", key) == 0)
116 delivery_mode = AMQP_DM_PERSISTENT;
118 delivery_mode = AMQP_DM_VOLATILE;
121 else if (strcasecmp ("StoreRates", key) == 0)
132 static int amqp_connect (void)
134 amqp_rpc_reply_t reply;
138 if (amqp_conn != NULL)
141 amqp_conn = amqp_new_connection ();
142 if (amqp_conn == NULL)
144 ERROR ("amqp plugin: amqp_new_connection failed.");
148 sockfd = amqp_open_socket (host, port);
152 status = (-1) * sockfd;
153 ERROR ("amqp plugin: amqp_open_socket failed: %s",
154 sstrerror (status, errbuf, sizeof (errbuf)));
155 amqp_destroy_connection(amqp_conn);
160 amqp_set_sockfd (amqp_conn, sockfd);
162 reply = amqp_login(amqp_conn, vhost,
163 /* channel max = */ 0,
164 /* frame max = */ 131072,
166 /* authentication: */ AMQP_SASL_METHOD_PLAIN, user, password);
167 if (reply.reply_type != AMQP_RESPONSE_NORMAL)
169 ERROR ("amqp plugin: amqp_login (vhost = %s, user = %s) failed.",
171 amqp_destroy_connection(amqp_conn);
177 amqp_channel_open (amqp_conn, /* channel = */ 1);
178 /* FIXME: Is checking "reply.reply_type" really correct here? How does
179 * it get set? --octo */
180 if (reply.reply_type != AMQP_RESPONSE_NORMAL)
182 ERROR ("amqp plugin: amqp_channel_open failed.");
183 amqp_connection_close (amqp_conn, AMQP_REPLY_SUCCESS);
184 amqp_destroy_connection(amqp_conn);
190 INFO ("amqp plugin: Successfully opened connection to vhost \"%s\" "
191 "on %s:%i.", vhost, host, port);
193 } /* int amqp_connect */
195 static int amqp_write_locked (const char *buffer)
197 amqp_basic_properties_t props;
200 status = amqp_connect ();
204 memset (&props, 0, sizeof (props));
205 props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG | AMQP_BASIC_DELIVERY_MODE_FLAG;
206 props.content_type = amqp_cstring_bytes("application/json");
207 props.delivery_mode = delivery_mode;
209 status = amqp_basic_publish(amqp_conn,
211 amqp_cstring_bytes(exchange),
212 amqp_cstring_bytes(routingkey),
216 amqp_cstring_bytes(buffer));
221 ERROR ("amqp plugin: amqp_basic_publish failed with status %i.",
224 sockfd = amqp_get_sockfd (amqp_conn);
225 amqp_channel_close (amqp_conn, 1, AMQP_REPLY_SUCCESS);
226 amqp_connection_close (amqp_conn, AMQP_REPLY_SUCCESS);
227 amqp_destroy_connection (amqp_conn);
233 } /* int amqp_write_locked */
235 static int amqp_write (const data_set_t *ds, const value_list_t *vl,
236 __attribute__((unused)) user_data_t *user_data)
243 if ((ds == NULL) || (vl == NULL))
246 memset (buffer, 0, sizeof (buffer));
247 bfree = sizeof (buffer);
250 format_json_initialize (buffer, &bfill, &bfree);
251 format_json_value_list (buffer, &bfill, &bfree, ds, vl, store_rates);
252 format_json_finalize (buffer, &bfill, &bfree);
254 pthread_mutex_lock (&amqp_conn_lock);
255 status = amqp_write_locked (buffer);
256 pthread_mutex_unlock (&amqp_conn_lock);
259 } /* int amqp_write */
261 static int shutdown(void)
263 pthread_mutex_lock (&amqp_conn_lock);
264 if (amqp_conn != NULL)
268 sockfd = amqp_get_sockfd (amqp_conn);
269 amqp_channel_close (amqp_conn, 1, AMQP_REPLY_SUCCESS);
270 amqp_connection_close (amqp_conn, AMQP_REPLY_SUCCESS);
271 amqp_destroy_connection (amqp_conn);
275 pthread_mutex_unlock (&amqp_conn_lock);
287 void module_register(void)
289 plugin_register_config("amqp", config, config_keys, config_keys_num);
290 plugin_register_write("amqp", amqp_write, NULL);
291 plugin_register_shutdown("amqp", shutdown);
294 /* vim: set sw=4 sts=4 et : */