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/* ulogd_GRAPHITE.c
*
* ulogd output target to feed data to a graphite system
*
* (C) 2012 by Eric Leblond <eric@regit.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <inttypes.h>
#include <time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <ulogd/ulogd.h>
#include <ulogd/conffile.h>
enum {
KEY_SUM_NAME,
KEY_SUM_PKTS,
KEY_SUM_BYTES,
KEY_OOB_TIME_SEC,
};
static struct ulogd_key graphite_inp[] = {
[KEY_SUM_NAME] {
.type = ULOGD_RET_STRING,
.name = "sum.name",
},
[KEY_SUM_PKTS] {
.type = ULOGD_RET_UINT64,
.name = "sum.pkts",
},
[KEY_SUM_BYTES] {
.type = ULOGD_RET_UINT64,
.name = "sum.bytes",
},
[KEY_OOB_TIME_SEC] {
.type = ULOGD_RET_UINT32,
.name = "oob.time.sec",
},
};
static struct config_keyset graphite_kset = {
.num_ces = 3,
.ces = {
{
.key = "host",
.type = CONFIG_TYPE_STRING,
.options = CONFIG_OPT_NONE,
},
{
.key = "port",
.type = CONFIG_TYPE_STRING,
.options = CONFIG_OPT_NONE,
},
{
.key = "prefix",
.type = CONFIG_TYPE_STRING,
.options = CONFIG_OPT_NONE,
},
},
};
#define host_ce(x) (x->ces[0])
#define port_ce(x) (x->ces[1])
#define prefix_ce(x) (x->ces[2])
struct graphite_instance {
int sck;
};
static int _connect_graphite(struct ulogd_pluginstance *pi)
{
struct graphite_instance *li = (struct graphite_instance *) &pi->private;
char *host;
char * port;
struct addrinfo hints;
struct addrinfo *result, *rp;
int sfd, s;
ulogd_log(ULOGD_DEBUG, "connecting to graphite\n");
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = 0;
hints.ai_protocol = 0;
host = host_ce(pi->config_kset).u.string;
port = port_ce(pi->config_kset).u.string;
s = getaddrinfo(host, port, &hints, &result);
if (s != 0) {
ulogd_log(ULOGD_ERROR, "getaddrinfo: %s\n", gai_strerror(s));
return -1;
}
for (rp = result; rp != NULL; rp = rp->ai_next) {
int on = 1;
sfd = socket(rp->ai_family, rp->ai_socktype,
rp->ai_protocol);
if (sfd == -1)
continue;
setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR,
(char *) &on, sizeof(on));
if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1)
break;
close(sfd);
}
freeaddrinfo(result);
if (rp == NULL) {
ulogd_log(ULOGD_ERROR, "Could not connect\n");
return -1;
}
li->sck = sfd;
return 0;
}
static int _output_graphite(struct ulogd_pluginstance *upi)
{
struct graphite_instance *li = (struct graphite_instance *) &upi->private;
struct ulogd_key *inp = upi->input.keys;
static char buf[256];
int ret;
time_t now;
int msg_size = 0;
if (ikey_get_u32(&inp[KEY_OOB_TIME_SEC]))
now = (time_t) ikey_get_u32(&inp[KEY_OOB_TIME_SEC]);
else
now = time(NULL);
msg_size = snprintf(buf, sizeof(buf), "%s.%s.pkts %" PRIu64
" %" PRIu64 "\n%s.%s.bytes %" PRIu64 " %" PRIu64 "\n",
prefix_ce(upi->config_kset).u.string,
(char *)ikey_get_ptr(&inp[KEY_SUM_NAME]),
ikey_get_u64(&inp[KEY_SUM_PKTS]),
now,
prefix_ce(upi->config_kset).u.string,
(char *)ikey_get_ptr(&inp[KEY_SUM_NAME]),
ikey_get_u64(&inp[KEY_SUM_BYTES]),
now
);
if (msg_size == -1) {
ulogd_log(ULOGD_ERROR, "Could not create message\n");
return ULOGD_IRET_ERR;
}
ret = send(li->sck, buf, msg_size, MSG_NOSIGNAL);
if (ret != msg_size) {
ulogd_log(ULOGD_ERROR, "Failure sending message\n");
if (ret == -1) {
return _connect_graphite(upi);
}
}
return ULOGD_IRET_OK;
}
static int start_graphite(struct ulogd_pluginstance *pi)
{
char *host;
char *port;
ulogd_log(ULOGD_DEBUG, "starting graphite\n");
host = host_ce(pi->config_kset).u.string;
if (host == NULL)
return -1;
port = port_ce(pi->config_kset).u.string;
if (port == NULL)
return -1;
return _connect_graphite(pi);
}
static int fini_graphite(struct ulogd_pluginstance *pi) {
struct graphite_instance *li = (struct graphite_instance *) &pi->private;
close(li->sck);
li->sck = 0;
return 0;
}
static int configure_graphite(struct ulogd_pluginstance *pi,
struct ulogd_pluginstance_stack *stack)
{
ulogd_log(ULOGD_DEBUG, "parsing config file section %s\n", pi->id);
return config_parse_file(pi->id, pi->config_kset);
}
static struct ulogd_plugin graphite_plugin = {
.name = "GRAPHITE",
.input = {
.keys = graphite_inp,
.num_keys = ARRAY_SIZE(graphite_inp),
.type = ULOGD_DTYPE_SUM,
},
.output = {
.type = ULOGD_DTYPE_SINK,
},
.config_kset = &graphite_kset,
.priv_size = sizeof(struct graphite_instance),
.configure = &configure_graphite,
.start = &start_graphite,
.stop = &fini_graphite,
.interp = &_output_graphite,
.version = VERSION,
};
void __attribute__ ((constructor)) init(void);
void init(void)
{
ulogd_register_plugin(&graphite_plugin);
}
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