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/*
* Copyright (c) 2009 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Steven Dake (sdake@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the MontaVista Software, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <string.h>
#include <inttypes.h>
#include <corosync/corotypes.h>
#include <corosync/cpg.h>
#include <zlib.h>
struct my_msg {
unsigned int msg_size;
unsigned char crc32[4];
unsigned char buffer[0];
};
static int deliveries = 0;
static void cpg_deliver_fn (
cpg_handle_t handle,
const struct cpg_name *group_name,
uint32_t nodeid,
uint32_t pid,
void *m,
size_t msg_len)
{
const struct my_msg *msg2 = m;
uLong chsum;
uint32_t nchsum;
printf ("msg '%s'\n", msg2->buffer);
chsum = crc32(0L, Z_NULL, 0);
chsum = crc32(chsum, msg2->buffer, msg2->msg_size) & 0xFFFFFFFF;
printf ("SIZE %d HASH: 0x%08"PRIx32"\n", msg2->msg_size, (uint32_t)chsum);
nchsum = htonl((uint32_t)chsum);
if (memcmp(&nchsum, msg2->crc32, sizeof(nchsum)) != 0) {
printf ("incorrect hash\n");
exit (1);
}
deliveries++;
}
static void cpg_confchg_fn (
cpg_handle_t handle,
const struct cpg_name *group_name,
const struct cpg_address *member_list, size_t member_list_entries,
const struct cpg_address *left_list, size_t left_list_entries,
const struct cpg_address *joined_list, size_t joined_list_entries)
{
}
static cpg_callbacks_t callbacks = {
cpg_deliver_fn,
cpg_confchg_fn
};
static struct cpg_name group_name = {
.value = "cpg_bm",
.length = 6
};
static unsigned char buffer[200000];
int main (int argc, char *argv[])
{
cpg_handle_t handle;
cs_error_t result;
int i = 0;
int j;
struct my_msg msg;
struct iovec iov[2];
const char *options = "i:";
int iter = 1000;
int opt;
int run_forever = 1;
uLong chsum;
uint32_t nchsum;
while ((opt = getopt(argc, argv, options)) != -1) {
switch (opt) {
case 'i':
run_forever = 0;
iter = atoi(optarg);
break;
}
}
result = cpg_initialize (&handle, &callbacks);
if (result != CS_OK) {
printf ("Couldn't initialize CPG service %d\n", result);
exit (0);
}
result = cpg_join (handle, &group_name);
if (result != CS_OK) {
printf ("cpg_join failed with result %d\n", result);
exit (1);
}
iov[0].iov_base = (void *)&msg;
iov[0].iov_len = sizeof (struct my_msg);
iov[1].iov_base = (void *)buffer;
/*
* Demonstrate cpg_mcast_joined
*/
i = 0;
do {
msg.msg_size = 100 + rand() % 100000;
iov[1].iov_len = msg.msg_size;
for (j = 0; j < msg.msg_size; j++) {
buffer[j] = j;
}
sprintf ((char *)buffer,
"cpg_mcast_joined: This is message %12d", i);
chsum = crc32(0L, Z_NULL, 0);
chsum = crc32(chsum, buffer, msg.msg_size) & 0xFFFFFFFF;
nchsum = htonl((uint32_t)chsum);
memcpy(msg.crc32, &nchsum, sizeof(nchsum)) ;
try_again_one:
result = cpg_mcast_joined (handle, CPG_TYPE_AGREED,
iov, 2);
if (result == CS_ERR_TRY_AGAIN) {
goto try_again_one;
}
result = cpg_dispatch (handle, CS_DISPATCH_ALL);
if (result != CS_OK && result != CS_ERR_TRY_AGAIN) {
printf("cpg_dispatch failed with result %d\n", result);
exit(1);
}
i++;
} while (run_forever || i < iter);
cpg_finalize (handle);
return (0);
}

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