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/*
* Copyright (c) 2005, Nate Nielsen
* All rights reserved.
*
* 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.
* * The names of contributors to this software may not 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.
*
*
* CONTRIBUTORS
* Nate Nielsen <nielsen@memberwebs.com>
*
*/
#define _GNU_SOURCE
#include "usuals.h"
#include <errno.h>
#include <syslog.h>
#include <unistd.h>
#include "stringx.h"
#include "rrdbotd.h"
#define MAX_NUMLEN 40
void rb_rrd_update(rb_poller *poll)
{
char buf[MAX_NUMLEN];
const char* argv[5];
char* template;
char* items;
int r, tlen, ilen;
rb_item *it;
if(!poll->items)
return;
tlen = 0;
ilen = 3;
for(it = poll->items; it; it = it->next)
{
tlen += strlen(it->rrdfield) + 1;
ilen += 40;
}
template = (char*)calloc(tlen, sizeof(char));
items = (char*)calloc(ilen, sizeof(char));
if(!template || !items)
{
if(items)
free(items);
if(template)
free(template);
rb_messagex(LOG_CRIT, "out of memory");
return;
}
/* Put in the right time */
snprintf(items, ilen, "%lld:", (poll->last_polled / 1000L));
/* Build the rest of the arguments */
for(it = poll->items; it; it = it->next)
{
if(it != poll->items)
{
strlcat(template, ":", tlen);
strlcat(items, ":", ilen);
}
strlcat(template, it->rrdfield, tlen);
if(it->value == RB_UNKNOWN)
strlcat(items, "U", ilen);
else
{
snprintf(buf, MAX_NUMLEN, "%.4lf", it->value);
buf[MAX_NUMLEN - 1] = 0;
strlcat(items, buf, ilen);
}
}
/* Always have to clear before calling rrdtool. klunky :( */
optind = 0;
opterr = 0;
/* TODO: We need support for @ to specify when these values occurred */
argv[0] = "rrdupdate";
argv[1] = poll->rrdname;
argv[2] = "-t";
argv[3] = template;
argv[4] = items;
rb_messagex(LOG_DEBUG, "updating RRD file: %s", poll->rrdname);
rb_messagex(LOG_DEBUG, "> template: %s", template);
rb_messagex(LOG_DEBUG, "> values: %s", items);
rrd_clear_error();
r = rrd_update(5, argv);
if(r != 0)
rb_messagex(LOG_ERR, "couldn't update rrd file: %s: %s",
poll->rrdname, rrd_get_error());
free(template);
free(items);
}
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