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/* SPDX-License-Identifier: GPL-3.0-or-later */
#include <stdlib.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <pthread.h>
void diep(char *s)
{
perror(s);
exit(1);
}
size_t run_threads = 1;
size_t metrics = 1024;
#define SERVER_IP "127.0.0.1"
#define PORT 8125
size_t myrand(size_t max) {
size_t loops = max / RAND_MAX;
size_t i;
size_t ret = rand();
for(i = 0; i < loops ;i++)
ret += rand();
return ret % max;
}
struct thread_data {
size_t id;
struct sockaddr_in *si_other;
int slen;
size_t counter;
};
static void *report_thread(void *__data) {
struct thread_data *data = (struct thread_data *)__data;
size_t last = 0;
for (;;) {
size_t i;
size_t total = 0;
for(i = 0; i < run_threads ;i++)
total += data[i].counter;
printf("%zu metrics/s\n", total-last);
last = total;
sleep(1);
printf("\033[F\033[J");
}
return NULL;
}
char *types[] = {"g", "c", "m", "ms", "h", "s", NULL};
// char *types[] = {"g", "c", "C", "h", "ms", NULL}; // brubeck compatible
static void *spam_thread(void *__data) {
struct thread_data *data = (struct thread_data *)__data;
int s;
char packet[1024];
if ((s = socket(AF_INET, SOCK_DGRAM, 0))==-1)
diep("socket");
char **packets = malloc(sizeof(char *) * metrics);
size_t i, *lengths = malloc(sizeof(size_t) * metrics);
size_t t;
for(i = 0, t = 0; i < metrics ;i++, t++) {
if(!types[t]) t = 0;
char *type = types[t];
lengths[i] = sprintf(packet, "stress.%s.t%zu.m%zu:%zu|%s", type, data->id, i, myrand(metrics), type);
packets[i] = strdup(packet);
// printf("packet %zu, of length %zu: '%s'\n", i, lengths[i], packets[i]);
}
//printf("\n");
for (;;) {
for(i = 0; i < metrics ;i++) {
if (sendto(s, packets[i], lengths[i], 0, (void *)data->si_other, data->slen) < 0) {
printf("C ==> DROPPED\n");
return NULL;
}
data->counter++;
}
}
free(packets);
free(lengths);
close(s);
return NULL;
}
int main(int argc, char *argv[])
{
if (argc != 5) {
fprintf(stderr, "Usage: '%s THREADS METRICS IP PORT'\n", argv[0]);
exit(-1);
}
run_threads = atoi(argv[1]);
metrics = atoi(argv[2]);
char *ip = argv[3];
int port = atoi(argv[4]);
struct thread_data data[run_threads];
struct sockaddr_in si_other;
pthread_t threads[run_threads], report;
size_t i;
srand(time(NULL));
memset(&si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(port);
if (inet_aton(ip, &si_other.sin_addr)==0) {
fprintf(stderr, "inet_aton() of ip '%s' failed\n", ip);
exit(1);
}
for (i = 0; i < run_threads; ++i) {
data[i].id = i;
data[i].si_other = &si_other;
data[i].slen = sizeof(si_other);
data[i].counter = 0;
pthread_create(&threads[i], NULL, spam_thread, &data[i]);
}
printf("\n");
printf("THREADS : %zu\n", run_threads);
printf("METRICS : %zu\n", metrics);
printf("DESTINATION : %s:%d\n", ip, port);
printf("\n");
pthread_create(&report, NULL, report_thread, &data);
for (i =0; i < run_threads; ++i)
pthread_join(threads[i], NULL);
return 0;
}
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