2c59e5d543
MFC after: 3 days
162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
/*-
|
|
* Copyright (c) 2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <errno.h>
|
|
|
|
#include "hast.h"
|
|
#include "hast_proto.h"
|
|
#include "hooks.h"
|
|
#include "nv.h"
|
|
#include "pjdlog.h"
|
|
#include "proto.h"
|
|
#include "subr.h"
|
|
|
|
#include "event.h"
|
|
|
|
void
|
|
event_send(const struct hast_resource *res, int event)
|
|
{
|
|
struct nv *nvin, *nvout;
|
|
int error;
|
|
|
|
PJDLOG_ASSERT(res != NULL);
|
|
PJDLOG_ASSERT(event >= EVENT_MIN && event <= EVENT_MAX);
|
|
|
|
nvin = nvout = NULL;
|
|
|
|
/*
|
|
* Prepare and send event to parent process.
|
|
*/
|
|
nvout = nv_alloc();
|
|
nv_add_uint8(nvout, (uint8_t)event, "event");
|
|
error = nv_error(nvout);
|
|
if (error != 0) {
|
|
pjdlog_common(LOG_ERR, 0, error,
|
|
"Unable to prepare event header");
|
|
goto done;
|
|
}
|
|
if (hast_proto_send(res, res->hr_event, nvout, NULL, 0) < 0) {
|
|
pjdlog_errno(LOG_ERR, "Unable to send event header");
|
|
goto done;
|
|
}
|
|
if (hast_proto_recv_hdr(res->hr_event, &nvin) < 0) {
|
|
pjdlog_errno(LOG_ERR, "Unable to receive event header");
|
|
goto done;
|
|
}
|
|
/*
|
|
* Do nothing with the answer. We only wait for it to be sure not
|
|
* to exit too quickly after sending an event and exiting immediately.
|
|
*/
|
|
done:
|
|
if (nvin != NULL)
|
|
nv_free(nvin);
|
|
if (nvout != NULL)
|
|
nv_free(nvout);
|
|
}
|
|
|
|
int
|
|
event_recv(const struct hast_resource *res)
|
|
{
|
|
struct nv *nvin, *nvout;
|
|
const char *evstr;
|
|
uint8_t event;
|
|
int error;
|
|
|
|
PJDLOG_ASSERT(res != NULL);
|
|
|
|
nvin = nvout = NULL;
|
|
|
|
if (hast_proto_recv_hdr(res->hr_event, &nvin) < 0) {
|
|
/*
|
|
* First error log as debug. This is because worker process
|
|
* most likely exited.
|
|
*/
|
|
pjdlog_common(LOG_DEBUG, 1, errno,
|
|
"Unable to receive event header");
|
|
goto fail;
|
|
}
|
|
|
|
event = nv_get_uint8(nvin, "event");
|
|
if (event == EVENT_NONE) {
|
|
pjdlog_error("Event header is missing 'event' field.");
|
|
goto fail;
|
|
}
|
|
|
|
switch (event) {
|
|
case EVENT_CONNECT:
|
|
evstr = "connect";
|
|
break;
|
|
case EVENT_DISCONNECT:
|
|
evstr = "disconnect";
|
|
break;
|
|
case EVENT_SYNCSTART:
|
|
evstr = "syncstart";
|
|
break;
|
|
case EVENT_SYNCDONE:
|
|
evstr = "syncdone";
|
|
break;
|
|
case EVENT_SYNCINTR:
|
|
evstr = "syncintr";
|
|
break;
|
|
case EVENT_SPLITBRAIN:
|
|
evstr = "split-brain";
|
|
break;
|
|
default:
|
|
pjdlog_error("Event header contain invalid event number (%hhu).",
|
|
event);
|
|
goto fail;
|
|
}
|
|
|
|
pjdlog_prefix_set("[%s] (%s) ", res->hr_name, role2str(res->hr_role));
|
|
hook_exec(res->hr_exec, evstr, res->hr_name, NULL);
|
|
pjdlog_prefix_set("%s", "");
|
|
|
|
nvout = nv_alloc();
|
|
nv_add_int16(nvout, 0, "error");
|
|
error = nv_error(nvout);
|
|
if (error != 0) {
|
|
pjdlog_common(LOG_ERR, 0, error,
|
|
"Unable to prepare event header");
|
|
goto fail;
|
|
}
|
|
if (hast_proto_send(res, res->hr_event, nvout, NULL, 0) < 0) {
|
|
pjdlog_errno(LOG_ERR, "Unable to send event header");
|
|
goto fail;
|
|
}
|
|
nv_free(nvin);
|
|
nv_free(nvout);
|
|
return (0);
|
|
fail:
|
|
if (nvin != NULL)
|
|
nv_free(nvin);
|
|
if (nvout != NULL)
|
|
nv_free(nvout);
|
|
return (-1);
|
|
}
|