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/*
Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include <stdarg.h>
#include <string.h>
#include <netinet/in.h>
#include <netdb.h>
#include "glusterfs/syscall.h"
#include "glusterfs/mem-pool.h"
#include "glusterfs/glusterfs.h"
#include "glusterfs/globals.h"
#include "glusterfs/events.h"
#define EVENT_HOST "127.0.0.1"
#define EVENT_PORT 24009
int
_gf_event(eventtypes_t event, const char *fmt, ...)
{
int ret = 0;
int sock = -1;
char *eventstr = NULL;
va_list arguments;
char *msg = NULL;
glusterfs_ctx_t *ctx = NULL;
char *host = NULL;
struct addrinfo hints;
struct addrinfo *result = NULL;
xlator_t *this = THIS;
char *volfile_server_transport = NULL;
/* Global context */
ctx = this->ctx;
if (event < 0 || event >= EVENT_LAST) {
ret = EVENT_ERROR_INVALID_INPUTS;
goto out;
}
/* Initialize UDP socket */
sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock < 0) {
ret = EVENT_ERROR_SOCKET;
goto out;
}
if (ctx) {
volfile_server_transport = ctx->cmd_args.volfile_server_transport;
}
if (!volfile_server_transport) {
volfile_server_transport = "tcp";
}
/* host = NULL returns localhost */
host = NULL;
if (ctx && ctx->cmd_args.volfile_server &&
(strcmp(volfile_server_transport, "unix"))) {
/* If it is client code then volfile_server is set
use that information to push the events. */
host = ctx->cmd_args.volfile_server;
}
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_ADDRCONFIG;
if ((getaddrinfo(host, TOSTRING(EVENT_PORT), &hints, &result)) != 0) {
ret = EVENT_ERROR_RESOLVE;
goto out;
}
va_start(arguments, fmt);
ret = gf_vasprintf(&msg, fmt, arguments);
va_end(arguments);
if (ret < 0) {
ret = EVENT_ERROR_INVALID_INPUTS;
goto out;
}
ret = gf_asprintf(&eventstr, "%u %d %s", (unsigned)time(NULL), event, msg);
GF_FREE(msg);
if (ret <= 0) {
ret = EVENT_ERROR_MSG_FORMAT;
goto out;
}
/* Send Message */
if (sendto(sock, eventstr, strlen(eventstr), 0, result->ai_addr,
result->ai_addrlen) <= 0) {
ret = EVENT_ERROR_SEND;
goto out;
}
ret = EVENT_SEND_OK;
out:
if (sock >= 0) {
sys_close(sock);
}
/* Allocated by gf_asprintf */
if (eventstr)
GF_FREE(eventstr);
if (result)
freeaddrinfo(result);
return ret;
}
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