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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <amqp.h>
#include <amqp_framing.h>
#include <unistd.h>
#include <assert.h>
#include "example_utils.h"
#define SUMMARY_EVERY_US 1000000
static void run(amqp_connection_state_t conn)
{
long long start_time = now_microseconds();
int received = 0;
int previous_received = 0;
long long previous_report_time = start_time;
long long next_summary_time = start_time + SUMMARY_EVERY_US;
amqp_frame_t frame;
int result;
size_t body_received;
size_t body_target;
long long now;
while (1) {
now = now_microseconds();
if (now > next_summary_time) {
int countOverInterval = received - previous_received;
double intervalRate = countOverInterval / ((now - previous_report_time) / 1000000.0);
printf("%lld ms: Received %d - %d since last report (%d Hz)\n",
(now - start_time) / 1000, received, countOverInterval, (int) intervalRate);
previous_received = received;
previous_report_time = now;
next_summary_time += SUMMARY_EVERY_US;
}
amqp_maybe_release_buffers(conn);
result = amqp_simple_wait_frame(conn, &frame);
if (result <= 0) return;
if (frame.frame_type != AMQP_FRAME_METHOD)
continue;
if (frame.payload.method.id != AMQP_BASIC_DELIVER_METHOD)
continue;
result = amqp_simple_wait_frame(conn, &frame);
if (result <= 0) return;
if (frame.frame_type != AMQP_FRAME_HEADER) {
fprintf(stderr, "Expected header!");
abort();
}
body_target = frame.payload.properties.body_size;
body_received = 0;
while (body_received < body_target) {
result = amqp_simple_wait_frame(conn, &frame);
if (result <= 0) return;
if (frame.frame_type != AMQP_FRAME_BODY) {
fprintf(stderr, "Expected body!");
abort();
}
body_received += frame.payload.body_fragment.len;
assert(body_received <= body_target);
}
received++;
}
}
int main(int argc, char const * const *argv) {
char const *hostname;
int port;
char const *exchange;
char const *bindingkey;
int sockfd;
amqp_connection_state_t conn;
amqp_bytes_t queuename;
if (argc < 3) {
fprintf(stderr, "Usage: amqp_consumer host port\n");
return 1;
}
hostname = argv[1];
port = atoi(argv[2]);
exchange = "amq.direct"; //argv[3];
bindingkey = "test queue"; //argv[4];
conn = amqp_new_connection();
die_on_error(sockfd = amqp_open_socket(hostname, port), "Opening socket");
amqp_set_sockfd(conn, sockfd);
die_on_amqp_error(amqp_login(conn, "/", 0, 131072, AMQP_SASL_METHOD_PLAIN, "guest", "guest"),
"Logging in");
amqp_channel_open(conn, 1);
die_on_amqp_error(amqp_rpc_reply, "Opening channel");
{
amqp_queue_declare_ok_t *r = amqp_queue_declare(conn, 1, AMQP_EMPTY_BYTES, 0, 0, 0, 1,
AMQP_EMPTY_TABLE);
die_on_amqp_error(amqp_rpc_reply, "Declaring queue");
queuename = amqp_bytes_malloc_dup(r->queue);
if (queuename.bytes == NULL) {
die_on_error(-ENOMEM, "Copying queue name");
}
}
amqp_queue_bind(conn, 1, queuename, amqp_cstring_bytes(exchange), amqp_cstring_bytes(bindingkey),
AMQP_EMPTY_TABLE);
die_on_amqp_error(amqp_rpc_reply, "Binding queue");
amqp_basic_consume(conn, 1, queuename, AMQP_EMPTY_BYTES, 0, 1, 0);
die_on_amqp_error(amqp_rpc_reply, "Consuming");
run(conn);
die_on_amqp_error(amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS), "Closing channel");
die_on_amqp_error(amqp_connection_close(conn, AMQP_REPLY_SUCCESS), "Closing connection");
amqp_destroy_connection(conn);
die_on_error(close(sockfd), "Closing socket");
return 0;
}
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