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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <amqp.h>
#include <amqp_framing.h>
#include <unistd.h>
#include "example_utils.h"
#define SUMMARY_EVERY_US 1000000
static void send_batch(amqp_connection_state_t conn,
char const *queue_name,
int rate_limit,
int message_count)
{
long long start_time = now_microseconds();
int i;
int sent = 0;
int previous_sent = 0;
long long previous_report_time = start_time;
long long next_summary_time = start_time + SUMMARY_EVERY_US;
char message[256];
for (i = 0; i < sizeof(message); i++) {
message[i] = i & 0xff;
}
for (i = 0; i < message_count; i++) {
long long now = now_microseconds();
die_on_error(amqp_basic_publish(conn,
amqp_cstring_bytes("amq.direct"),
amqp_cstring_bytes(queue_name),
0,
0,
NULL,
(amqp_bytes_t) {.len = sizeof(message), .bytes = message}),
"Publishing");
sent++;
if (now > next_summary_time) {
int countOverInterval = sent - previous_sent;
double intervalRate = countOverInterval / ((now - previous_report_time) / 1000000.0);
printf("%lld ms: Sent %d - %d since last report (%d Hz)\n",
(now - start_time) / 1000, sent, countOverInterval, (int) intervalRate);
previous_sent = sent;
previous_report_time = now;
next_summary_time += SUMMARY_EVERY_US;
}
while (((i * 1000000.0) / (now - start_time)) > rate_limit) {
usleep(2000);
now = now_microseconds();
}
}
{
long long stop_time = now_microseconds();
long long total_delta = stop_time - start_time;
printf("PRODUCER - Message count: %d\n", message_count);
printf("Total time, milliseconds: %lld\n", total_delta / 1000);
printf("Overall messages-per-second: %g\n", (message_count / (total_delta / 1000000.0)));
}
}
int main(int argc, char const * const *argv) {
char const *hostname;
int port;
int rate_limit;
int message_count;
int sockfd;
amqp_connection_state_t conn;
if (argc < 5) {
fprintf(stderr, "Usage: amqp_producer host port rate_limit message_count\n");
return 1;
}
hostname = argv[1];
port = atoi(argv[2]);
rate_limit = atoi(argv[3]);
message_count = atoi(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, "/", 131072, AMQP_SASL_METHOD_PLAIN, "guest", "guest"),
"Logging in");
send_batch(conn, "test queue", rate_limit, message_count);
die_on_amqp_error(amqp_channel_close(conn, 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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