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/*
* ***** 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 Developer of the Original Code is VMware, Inc.
* Portions created by VMware are Copyright (c) 2007-2011 VMware, Inc.
*
* Portions created by Tony Garnock-Jones are Copyright (c) 2009-2010
* VMware, Inc. and Tony Garnock-Jones.
*
* All rights reserved.
*
* 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 "config.h"
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
#include "process.h"
/* Convert a amqp_bytes_t to an escaped string form for printing. We
use the same escaping conventions as rabbitmqctl. */
static char *stringify_bytes(amqp_bytes_t bytes)
{
/* We will need up to 4 chars per byte, plus the terminating 0 */
char *res = malloc(bytes.len * 4 + 1);
uint8_t *data = bytes.bytes;
char *p = res;
size_t i;
for (i = 0; i < bytes.len; i++) {
if (data[i] >= 32 && data[i] != 127) {
*p++ = data[i];
}
else {
*p++ = '\\';
*p++ = '0' + (data[i] >> 6);
*p++ = '0' + (data[i] >> 3 & 0x7);
*p++ = '0' + (data[i] & 0x7);
}
}
*p = 0;
return res;
}
static amqp_bytes_t setup_queue(amqp_connection_state_t conn,
char *queue, char *exchange,
char *routing_key, int declare)
{
amqp_bytes_t queue_bytes = cstring_bytes(queue);
/* if an exchange name wasn't provided, check that we don't
have options that require it. */
if (!exchange && routing_key) {
fprintf(stderr, "--routing-key option requires an exchange"
" name to be provided with --exchange\n");
exit(1);
}
if (!queue || exchange || declare) {
/* Declare the queue as auto-delete. */
amqp_queue_declare_ok_t *res = amqp_queue_declare(conn, 1,
queue_bytes, 0, 0, 1, 1,
amqp_empty_table);
if (!res)
die_rpc(amqp_get_rpc_reply(conn), "queue.declare");
if (!queue) {
/* the server should have provided a queue name */
char *sq;
queue_bytes = amqp_bytes_malloc_dup(res->queue);
sq = stringify_bytes(queue_bytes);
fprintf(stderr, "Server provided queue name: %s\n",
sq);
free(sq);
}
/* Bind to an exchange if requested */
if (exchange) {
amqp_bytes_t eb = amqp_cstring_bytes(exchange);
if (!amqp_queue_bind(conn, 1, queue_bytes, eb,
cstring_bytes(routing_key),
amqp_empty_table))
die_rpc(amqp_get_rpc_reply(conn),
"queue.bind");
}
}
return queue_bytes;
}
static void do_consume(amqp_connection_state_t conn, amqp_bytes_t queue,
int no_ack, int count, const char * const *argv)
{
int i;
/* If there is a limit, set the qos to match */
if (count > 0 && count <= 65535
&& !amqp_basic_qos(conn, 1, 0, count, 0))
die_rpc(amqp_get_rpc_reply(conn), "basic.qos");
if (!amqp_basic_consume(conn, 1, queue, amqp_empty_bytes, 0, no_ack,
0, amqp_empty_table))
die_rpc(amqp_get_rpc_reply(conn), "basic.consume");
for (i = 0; count < 0 || i < count; i++) {
amqp_frame_t frame;
struct pipeline pl;
uint64_t delivery_tag;
int res = amqp_simple_wait_frame(conn, &frame);
die_amqp_error(res, "waiting for header frame");
if (frame.frame_type != AMQP_FRAME_METHOD
|| frame.payload.method.id != AMQP_BASIC_DELIVER_METHOD)
continue;
amqp_basic_deliver_t *deliver
= (amqp_basic_deliver_t *)frame.payload.method.decoded;
delivery_tag = deliver->delivery_tag;
pipeline(argv, &pl);
copy_body(conn, pl.infd);
if (finish_pipeline(&pl) && !no_ack)
die_amqp_error(amqp_basic_ack(conn, 1, delivery_tag,
0),
"basic.ack");
amqp_maybe_release_buffers(conn);
}
}
int main(int argc, const char **argv)
{
poptContext opts;
amqp_connection_state_t conn;
const char * const *cmd_argv;
char *queue = NULL;
char *exchange = NULL;
char *routing_key = NULL;
int declare = 0;
int no_ack = 0;
int count = -1;
amqp_bytes_t queue_bytes;
struct poptOption options[] = {
INCLUDE_OPTIONS(connect_options),
{"queue", 'q', POPT_ARG_STRING, &queue, 0,
"the queue to consume from", "queue"},
{"exchange", 'e', POPT_ARG_STRING, &exchange, 0,
"bind the queue to this exchange", "exchange"},
{"routing-key", 'r', POPT_ARG_STRING, &routing_key, 0,
"the routing key to bind with", "routing key"},
{"declare", 'd', POPT_ARG_NONE, &declare, 0,
"declare an exclusive queue", NULL},
{"no-ack", 'A', POPT_ARG_NONE, &no_ack, 0,
"consume in no-ack mode", NULL},
{"count", 'c', POPT_ARG_INT, &count, 0,
"stop consuming after this many messages are consumed",
"limit"},
POPT_AUTOHELP
{ NULL, 0, 0, NULL, 0 }
};
opts = process_options(argc, argv, options,
"[OPTIONS]... <command> <args>");
cmd_argv = poptGetArgs(opts);
if (!cmd_argv || !cmd_argv[0]) {
fprintf(stderr, "consuming command not specified\n");
poptPrintUsage(opts, stderr, 0);
goto error;
}
conn = make_connection();
queue_bytes = setup_queue(conn, queue, exchange, routing_key, declare);
do_consume(conn, queue_bytes, no_ack, count, cmd_argv);
close_connection(conn);
return 0;
error:
poptFreeContext(opts);
return 1;
}
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