summary_stats_client.c

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/*
 *------------------------------------------------------------------
 * summary_stats_client - 
 * 
 * Copyright (c) 2010 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 *------------------------------------------------------------------
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <netdb.h>
#include <signal.h>
#include <pthread.h>
#include <unistd.h>
#include <time.h>
#include <fcntl.h>
#include <string.h>
#include <vppinfra/clib.h>
#include <vppinfra/vec.h>
#include <vppinfra/hash.h>
#include <vppinfra/bitmap.h>
#include <vppinfra/fifo.h>
#include <vppinfra/time.h>
#include <vppinfra/mheap.h>
#include <vppinfra/heap.h>
#include <vppinfra/pool.h>
#include <vppinfra/format.h>
#include <vppinfra/error.h>

#include <vnet/vnet.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>

#include <api/vpe_msg_enum.h>

#include <vnet/ip/ip.h>

#define f64_endian(a)
#define f64_print(a,b)

#define vl_typedefs             /* define message structures */
#include <api/vpe_all_api_h.h> 
#undef vl_typedefs

#define vl_endianfun             /* define message structures */
#include <api/vpe_all_api_h.h> 
#undef vl_endianfun

/* instantiate all the print functions we know about */
#define vl_print(handle, ...) 
#define vl_printfun
#include <api/vpe_all_api_h.h>
#undef vl_printfun

vl_shmem_hdr_t *shmem_hdr;

typedef struct {
    volatile int sigterm_received;

    struct sockaddr_in send_data_addr;
    int send_data_socket;
    u8 * display_name;

    /* convenience */
    unix_shared_memory_queue_t * vl_input_queue;
    u32 my_client_index;
} test_main_t;

test_main_t test_main;

/* 
 * Satisfy external references when -lvlib is not available.
 */
void vlib_cli_output (struct vlib_main_t * vm, char * fmt, ...)
{
    clib_warning ("vlib_cli_output callled...");
}


static void
vl_api_vnet_summary_stats_reply_t_handler (
    vl_api_vnet_summary_stats_reply_t * mp)
{
    test_main_t * tm = &test_main;
    static u8 *sb;
    int n;

    printf ("total rx pkts %llu, total rx bytes %llu\n",
            (unsigned long long) mp->total_pkts[0], 
            (unsigned long long) mp->total_bytes[0]);
    printf ("total tx pkts %llu, total tx bytes %llu\n",
            (unsigned long long) mp->total_pkts[1], 
            (unsigned long long) mp->total_bytes[1]);
    printf ("vector rate %.2f\n", mp->vector_rate);

    vec_reset_length (sb);
    sb = format (sb, "%v,%.0f,%llu,%llu,%llu,%llu\n%c",
                 tm->display_name, mp->vector_rate, 
                 (unsigned long long) mp->total_pkts[0], 
                 (unsigned long long) mp->total_bytes[0],
                 (unsigned long long) mp->total_pkts[1], 
                 (unsigned long long) mp->total_bytes[1], 0);
                 
    n = sendto (tm->send_data_socket, sb, vec_len(sb), 
                0, (struct sockaddr *)&tm->send_data_addr, 
                sizeof (tm->send_data_addr));
    
    if (n != vec_len (sb))
        clib_unix_warning ("sendto");

}    

#define foreach_api_msg                                                 \
_(VNET_SUMMARY_STATS_REPLY, vnet_summary_stats_reply)

int connect_to_vpe(char *name)
{
    int rv=0;

    rv = vl_client_connect_to_vlib("/vpe-api", name, 32);

#define _(N,n)                                                  \
    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
                           vl_api_##n##_t_handler,              \
                           vl_noop_handler,                     \
                           vl_api_##n##_t_endian,               \
                           vl_api_##n##_t_print,                \
                           sizeof(vl_api_##n##_t), 1); 
    foreach_api_msg;
#undef _

    shmem_hdr = api_main.shmem_hdr;

    return rv;
}

int disconnect_from_vpe(void)
{
    vl_client_disconnect_from_vlib();
    return 0;
}

static void sigterm_handler (int sig)
{
    test_main_t *tm = &test_main;
    tm->sigterm_received = 1;
}

/* Parse an IP4 address %d.%d.%d.%d. */
uword unformat_ip4_address (unformat_input_t * input, va_list * args)
{
  u8 * result = va_arg (*args, u8 *);
  unsigned a[4];

  if (! unformat (input, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]))
    return 0;

  if (a[0] >= 256 || a[1] >= 256 || a[2] >= 256 || a[3] >= 256)
    return 0;

  result[0] = a[0];
  result[1] = a[1];
  result[2] = a[2];
  result[3] = a[3];

  return 1;
}

int main (int argc, char ** argv)
{
    api_main_t * am = &api_main;
    test_main_t * tm = &test_main;
    vl_api_vnet_get_summary_stats_t * mp;
    unformat_input_t _input, *input = &_input;
    clib_error_t * error = 0;
    ip4_address_t collector_ip;
    u8 * display_name = 0;
    u16 collector_port = 7654;

    collector_ip.as_u32 = (u32)~0;

    unformat_init_command_line (input, argv);

    while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT)  {
        if (unformat (input, "collector-ip %U", 
                      unformat_ip4_address, &collector_ip))
            ;
        else if (unformat (input, "display-name %v", &display_name))
            ;
        else if (unformat (input, "collector-port %d", &collector_port))
            ;
        else {
            error = 
                clib_error_return 
                (0, "Usage: %s collector-ip <ip>\n"
                 "    [display-name <string>] [collector-port <num>]\n"
                 "    port defaults to 7654", argv[0]);
            break;
        }
    }

    if (error == 0 && collector_ip.as_u32 == (u32)~0) 
        error = clib_error_return (0, "collector-ip not set...\n");


    if (error) {
        clib_error_report (error);
        exit (1);
    }

    if (display_name == 0) {
        display_name = format (0, "vpe-to-%d.%d.%d.%d",
                               collector_ip.as_u8[0],
                               collector_ip.as_u8[1],
                               collector_ip.as_u8[2],
                               collector_ip.as_u8[3]);
    }


    connect_to_vpe("test_client");
    
    tm->vl_input_queue = shmem_hdr->vl_input_queue;
    tm->my_client_index = am->my_client_index;
    tm->display_name = display_name;

    signal(SIGTERM, sigterm_handler);
    signal(SIGINT, sigterm_handler);
    signal(SIGQUIT, sigterm_handler);
    
    /* data (multicast) RX socket */
    tm->send_data_socket = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (tm->send_data_socket < 0) {
        clib_unix_warning(0, "data_rx_socket");
        exit (1);
    }

    memset(&tm->send_data_addr, 0, sizeof(tm->send_data_addr));
    tm->send_data_addr.sin_family = AF_INET;
    tm->send_data_addr.sin_addr.s_addr = collector_ip.as_u32;
    tm->send_data_addr.sin_port = htons(collector_port);

    fformat(stdout, "Send SIGINT or SIGTERM to quit...\n");

    while (1) {
        sleep (5);

        if (tm->sigterm_received)
            break;
        /* Poll for stats */
        mp = vl_msg_api_alloc (sizeof (*mp));
        memset(mp, 0, sizeof (*mp));
        mp->_vl_msg_id = ntohs (VL_API_VNET_GET_SUMMARY_STATS);
        mp->client_index = tm->my_client_index;
        vl_msg_api_send_shmem (tm->vl_input_queue, (u8 *)&mp);
    }

    fformat(stdout, "Exiting...\n");

    disconnect_from_vpe();
    exit (0);
}