summaryrefslogtreecommitdiff
path: root/librabbitmq/amqp_api.c
blob: 2b1ed5448213797633994fd4788d805798c69166 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and
 * limitations under the License.
 *
 * The Original Code is librabbitmq.
 *
 * The Initial Developers of the Original Code are LShift Ltd, Cohesive
 * Financial Technologies LLC, and Rabbit Technologies Ltd.  Portions
 * created before 22-Nov-2008 00:00:00 GMT by LShift Ltd, Cohesive
 * Financial Technologies LLC, or Rabbit Technologies Ltd are Copyright
 * (C) 2007-2008 LShift Ltd, Cohesive Financial Technologies LLC, and
 * Rabbit Technologies Ltd.
 *
 * Portions created by LShift Ltd are Copyright (C) 2007-2009 LShift
 * Ltd. Portions created by Cohesive Financial Technologies LLC are
 * Copyright (C) 2007-2009 Cohesive Financial Technologies
 * LLC. Portions created by Rabbit Technologies Ltd are Copyright (C)
 * 2007-2009 Rabbit Technologies Ltd.
 *
 * Portions created by Tony Garnock-Jones are Copyright (C) 2009-2010
 * LShift Ltd and Tony Garnock-Jones.
 *
 * All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * Alternatively, the contents of this file may be used under the terms
 * of the GNU General Public License Version 2 or later (the "GPL"), in
 * which case the provisions of the GPL are applicable instead of those
 * above. If you wish to allow use of your version of this file only
 * under the terms of the GPL, and not to allow others to use your
 * version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the
 * notice and other provisions required by the GPL. If you do not
 * delete the provisions above, a recipient may use your version of
 * this file under the terms of any one of the MPL or the GPL.
 *
 * ***** END LICENSE BLOCK *****
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>

#include "amqp.h"
#include "amqp_framing.h"
#include "amqp_private.h"

#include <assert.h>

static const char *client_error_strings[ERROR_MAX] = {
  "could not allocate memory", /* ERROR_NO_MEMORY */
  "received bad AMQP data", /* ERROR_BAD_AQMP_DATA */
  "unknown AMQP class id", /* ERROR_UNKOWN_CLASS */
  "unknown AMQP method id", /* ERROR_UNKOWN_METHOD */
  "unknown host", /* ERROR_GETHOSTBYNAME_FAILED */
  "incompatible AMQP version", /* ERROR_INCOMPATIBLE_AMQP_VERSION */
  "connection closed unexpectedly", /* ERROR_CONNECTION_CLOSED */
};

char *amqp_error_string(int err)
{
  const char *str;
  int category = (err & ERROR_CATEGORY_MASK);
  err = (err & ~ERROR_CATEGORY_MASK);

  switch (category) {
  case ERROR_CATEGORY_CLIENT:
    if (err < 1 || err > ERROR_MAX)
      str = "(undefined librabbitmq error)";
    else
      str = client_error_strings[err - 1];
    break;

  case ERROR_CATEGORY_OS:
    return amqp_os_error_string(err);
    
  default:
    str = "(undefined error category)";
  }

  return strdup(str);
}

#define RPC_REPLY(replytype)						\
  (state->most_recent_api_result.reply_type == AMQP_RESPONSE_NORMAL	\
   ? (replytype *) state->most_recent_api_result.reply.decoded		\
   : NULL)

amqp_channel_open_ok_t *amqp_channel_open(amqp_connection_state_t state,
					  amqp_channel_t channel)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, CHANNEL, OPEN, OPEN_OK,
		    amqp_channel_open_t,
		    AMQP_EMPTY_BYTES);
  return RPC_REPLY(amqp_channel_open_ok_t);
}

int amqp_basic_publish(amqp_connection_state_t state,
		       amqp_channel_t channel,
		       amqp_bytes_t exchange,
		       amqp_bytes_t routing_key,
		       amqp_boolean_t mandatory,
		       amqp_boolean_t immediate,
		       amqp_basic_properties_t const *properties,
		       amqp_bytes_t body)
{
  amqp_frame_t f;
  size_t body_offset;
  size_t usable_body_payload_size = state->frame_max - (HEADER_SIZE + FOOTER_SIZE);

  amqp_basic_publish_t m =
    (amqp_basic_publish_t) {
      .exchange = exchange,
      .routing_key = routing_key,
      .mandatory = mandatory,
      .immediate = immediate
    };

  amqp_basic_properties_t default_properties;

  AMQP_CHECK_RESULT(amqp_send_method(state, channel, AMQP_BASIC_PUBLISH_METHOD, &m));

  if (properties == NULL) {
    memset(&default_properties, 0, sizeof(default_properties));
    properties = &default_properties;
  }

  f.frame_type = AMQP_FRAME_HEADER;
  f.channel = channel;
  f.payload.properties.class_id = AMQP_BASIC_CLASS;
  f.payload.properties.body_size = body.len;
  f.payload.properties.decoded = (void *) properties;
  AMQP_CHECK_RESULT(amqp_send_frame(state, &f));

  body_offset = 0;
  while (1) {
    int remaining = body.len - body_offset;
    assert(remaining >= 0);

    if (remaining == 0)
      break;

    f.frame_type = AMQP_FRAME_BODY;
    f.channel = channel;
    f.payload.body_fragment.bytes = BUF_AT(body, body_offset);
    if (remaining >= usable_body_payload_size) {
      f.payload.body_fragment.len = usable_body_payload_size;
    } else {
      f.payload.body_fragment.len = remaining;
    }

    body_offset += f.payload.body_fragment.len;
    AMQP_CHECK_RESULT(amqp_send_frame(state, &f));
  }

  return 0;
}

amqp_rpc_reply_t amqp_channel_close(amqp_connection_state_t state,
				    amqp_channel_t channel,
				    int code)
{
  char codestr[13];
  snprintf(codestr, sizeof(codestr), "%d", code);
  return AMQP_SIMPLE_RPC(state, channel, CHANNEL, CLOSE, CLOSE_OK,
			 amqp_channel_close_t,
			 code, amqp_cstring_bytes(codestr), 0, 0);
}

amqp_rpc_reply_t amqp_connection_close(amqp_connection_state_t state,
				       int code)
{
  char codestr[13];
  snprintf(codestr, sizeof(codestr), "%d", code);
  return AMQP_SIMPLE_RPC(state, 0, CONNECTION, CLOSE, CLOSE_OK,
			 amqp_connection_close_t,
			 code, amqp_cstring_bytes(codestr), 0, 0);
}

amqp_exchange_declare_ok_t *amqp_exchange_declare(amqp_connection_state_t state,
						  amqp_channel_t channel,
						  amqp_bytes_t exchange,
						  amqp_bytes_t type,
						  amqp_boolean_t passive,
						  amqp_boolean_t durable,
						  amqp_boolean_t auto_delete,
						  amqp_table_t arguments)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, EXCHANGE, DECLARE, DECLARE_OK,
		    amqp_exchange_declare_t,
		    0, exchange, type, passive, durable, auto_delete, 0, 0, arguments);
  return RPC_REPLY(amqp_exchange_declare_ok_t);
}

amqp_queue_declare_ok_t *amqp_queue_declare(amqp_connection_state_t state,
					    amqp_channel_t channel,
					    amqp_bytes_t queue,
					    amqp_boolean_t passive,
					    amqp_boolean_t durable,
					    amqp_boolean_t exclusive,
					    amqp_boolean_t auto_delete,
					    amqp_table_t arguments)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, QUEUE, DECLARE, DECLARE_OK,
		    amqp_queue_declare_t,
		    0, queue, passive, durable, exclusive, auto_delete, 0, arguments);
  return RPC_REPLY(amqp_queue_declare_ok_t);
}

amqp_queue_delete_ok_t *amqp_queue_delete(amqp_connection_state_t state,
					  amqp_channel_t channel,
					  amqp_bytes_t queue,
					  amqp_boolean_t if_unused,
					  amqp_boolean_t if_empty)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, QUEUE, DELETE, DELETE_OK,
		    amqp_queue_delete_t,
		    0, queue, if_unused, if_empty, 0);
  return RPC_REPLY(amqp_queue_delete_ok_t);
}

amqp_queue_bind_ok_t *amqp_queue_bind(amqp_connection_state_t state,
				      amqp_channel_t channel,
				      amqp_bytes_t queue,
				      amqp_bytes_t exchange,
				      amqp_bytes_t routing_key,
				      amqp_table_t arguments)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, QUEUE, BIND, BIND_OK,
		    amqp_queue_bind_t,
		    0, queue, exchange, routing_key, 0, arguments);
  return RPC_REPLY(amqp_queue_bind_ok_t);
}

amqp_queue_unbind_ok_t *amqp_queue_unbind(amqp_connection_state_t state,
					  amqp_channel_t channel,
					  amqp_bytes_t queue,
					  amqp_bytes_t exchange,
					  amqp_bytes_t binding_key,
					  amqp_table_t arguments)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, QUEUE, UNBIND, UNBIND_OK,
		    amqp_queue_unbind_t,
		    0, queue, exchange, binding_key, arguments);
  return RPC_REPLY(amqp_queue_unbind_ok_t);
}

amqp_basic_consume_ok_t *amqp_basic_consume(amqp_connection_state_t state,
					    amqp_channel_t channel,
					    amqp_bytes_t queue,
					    amqp_bytes_t consumer_tag,
					    amqp_boolean_t no_local,
					    amqp_boolean_t no_ack,
					    amqp_boolean_t exclusive)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, BASIC, CONSUME, CONSUME_OK,
		    amqp_basic_consume_t,
		    0, queue, consumer_tag, no_local, no_ack, exclusive, 0);
  return RPC_REPLY(amqp_basic_consume_ok_t);
}

int amqp_basic_ack(amqp_connection_state_t state,
		   amqp_channel_t channel,
		   uint64_t delivery_tag,
		   amqp_boolean_t multiple)
{
  amqp_basic_ack_t m =
    (amqp_basic_ack_t) {
      .delivery_tag = delivery_tag,
      .multiple = multiple
    };
  AMQP_CHECK_RESULT(amqp_send_method(state, channel, AMQP_BASIC_ACK_METHOD, &m));
  return 0;
}

amqp_queue_purge_ok_t *amqp_queue_purge(amqp_connection_state_t state,
					amqp_channel_t channel,
					amqp_bytes_t queue,
					amqp_boolean_t no_wait)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, QUEUE, PURGE, PURGE_OK,
		    amqp_queue_purge_t,
		    0, queue, no_wait);
  return RPC_REPLY(amqp_queue_purge_ok_t);
}

amqp_rpc_reply_t amqp_basic_get(amqp_connection_state_t state,
				amqp_channel_t channel,
				amqp_bytes_t queue,
				amqp_boolean_t no_ack)
{
  amqp_method_number_t replies[] = { AMQP_BASIC_GET_OK_METHOD,
				     AMQP_BASIC_GET_EMPTY_METHOD,
				     0 };
  state->most_recent_api_result =
    AMQP_MULTIPLE_RESPONSE_RPC(state, channel, BASIC, GET, replies,
			       amqp_basic_get_t,
			       0, queue, no_ack);
  return state->most_recent_api_result;
}

amqp_tx_select_ok_t *amqp_tx_select(amqp_connection_state_t state,
				    amqp_channel_t channel)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, TX, SELECT, SELECT_OK,
		    amqp_tx_select_t);
  return RPC_REPLY(amqp_tx_select_ok_t);
}

amqp_tx_commit_ok_t *amqp_tx_commit(amqp_connection_state_t state,
				    amqp_channel_t channel)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, TX, COMMIT, COMMIT_OK,
		    amqp_tx_commit_t);
  return RPC_REPLY(amqp_tx_commit_ok_t);
}

amqp_tx_rollback_ok_t *amqp_tx_rollback(amqp_connection_state_t state,
					amqp_channel_t channel)
{
  state->most_recent_api_result =
    AMQP_SIMPLE_RPC(state, channel, TX, ROLLBACK, ROLLBACK_OK,
		    amqp_tx_rollback_t);
  return RPC_REPLY(amqp_tx_rollback_ok_t);
}

amqp_rpc_reply_t amqp_get_rpc_reply(amqp_connection_state_t state)
{
  return state->most_recent_api_result;
}