examples/client.c

   1 /*
   2  * Copyright (C) 2011 Felix Fietkau <nbd@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <sys/time.h>
  15 #include <unistd.h>
  16
  17 #include "libubus.h"
  18
  19 static struct ubus_context *ctx;
  20 static struct blob_buf b;
  21
  22 static void test_client_subscribe_cb(struct ubus_context *ctx, struct ubus_object *obj)
  23 {
  24         fprintf(stderr, "Subscribers active: %d\n", obj->has_subscribers);
  25 }
  26
  27 static struct ubus_object test_client_object = {
  28         .subscribe_cb = test_client_subscribe_cb,
  29 };
  30
  31 static void test_client_notify_cb(struct uloop_timeout *timeout)
  32 {
  33         static int counter = 0;
  34         int err;
  35         struct timeval tv1, tv2;
  36         int max = 1000;
  37         long delta;
  38         int i = 0;
  39
  40         blob_buf_init(&b, 0);
  41         blobmsg_add_u32(&b, "counter", counter++);
  42
  43         gettimeofday(&tv1, NULL);
  44         for (i = 0; i < max; i++)
  45                 err = ubus_notify(ctx, &test_client_object, "ping", b.head, 1000);
  46         gettimeofday(&tv2, NULL);
  47         if (err)
  48                 fprintf(stderr, "Notify failed: %s\n", ubus_strerror(err));
  49
  50         delta = (tv2.tv_sec - tv1.tv_sec) * 1000000 + (tv2.tv_usec - tv1.tv_usec);
  51         fprintf(stderr, "Avg time per iteration: %ld usec\n", delta / max);
  52
  53         uloop_timeout_set(timeout, 1000);
  54 }
  55
  56 static struct uloop_timeout notify_timer = {
  57         .cb = test_client_notify_cb,
  58 };
  59
  60 static void client_main(void)
  61 {
  62         uint32_t id;
  63         int ret;
  64
  65         ret = ubus_add_object(ctx, &test_client_object);
  66         if (ret) {
  67                 fprintf(stderr, "Failed to add_object object: %s\n", ubus_strerror(ret));
  68                 return;
  69         }
  70
  71         if (ubus_lookup_id(ctx, "test", &id)) {
  72                 fprintf(stderr, "Failed to look up test object\n");
  73                 return;
  74         }
  75
  76         blob_buf_init(&b, 0);
  77         blobmsg_add_u32(&b, "id", test_client_object.id);
  78         ubus_invoke(ctx, id, "watch", b.head, NULL, 0, 3000);
  79         test_client_notify_cb(&notify_timer);
  80         uloop_run();
  81 }
  82
  83 int main(int argc, char **argv)
  84 {
  85         const char *ubus_socket = NULL;
  86         int ch;
  87
  88         while ((ch = getopt(argc, argv, "cs:")) != -1) {
  89                 switch (ch) {
  90                 case 's':
  91                         ubus_socket = optarg;
  92                         break;
  93                 default:
  94                         break;
  95                 }
  96         }
  97
  98         argc -= optind;
  99         argv += optind;
 100
 101         uloop_init();
 102
 103         ctx = ubus_connect(ubus_socket);
 104         if (!ctx) {
 105                 fprintf(stderr, "Failed to connect to ubus\n");
 106                 return -1;
 107         }
 108
 109         ubus_add_uloop(ctx);
 110
 111         client_main();
 112
 113         ubus_free(ctx);
 114         uloop_done();
 115
 116         return 0;
 117 }