+++ /dev/null
-/*
- * /usr/share/doc/collectd/examples/sample_plugin.c
- *
- * A sample plugin for collectd.
- *
- * Written by Sebastian Harl <sh@tokkee.org>
- *
- * This is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#include <collectd/common.h> /* rrd_update_file */
-#include <collectd/plugin.h> /* plugin_* */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-/* Optional config file support */
-/* #include <collectd/configfile.h> */
-
-/* Optional debugging support
- * (only available if collectd was compiled with debugging support) */
-/* #include <collectd/utils_debug.h> */
-
-#define MODULE_NAME "myplugin"
-
-/* Name of the rrd file under DataDir (/var/lib/collectd by default)
- *
- * The name may contain slashes to create subdirectories. */
-static char *my_rrd = "myplugin.rrd";
-
-/* DS definitions for the rrd file
- *
- * See the rrdcreate(1) manpage for details. The heartbeat is configurable in
- * collectd. It defaults to 25. */
-static char *ds_def[] =
-{
- "DS:my_ds:GAUGE:25:0:U",
- NULL
-};
-
-/* DS count */
-static int ds_num = 1;
-
-/* Time at which the read function is called */
-extern time_t curtime;
-
-/* Initialize the plugin
- *
- * This function is called to set up a plugin before using it. */
-static void my_init(void)
-{
- /* we have nothing to do here :-) */
- return;
-}
-
-/* Get the data
- *
- * This function implements the magic used to get the desired values that
- * should be stored in the rrd file. It uses plugin_submit to transfer the
- * data to whatever place is configured in the config file. If there are more
- * than one instances you should pass a uniq identifier as seconds argument to
- * the plugin_submit function. */
-#define BUFSIZE 256
-static void my_read(void)
-{
- long int data = 0;
- char buf[BUFSIZE] = "";
-
- /* magic ;-) */
- data = random();
-
- if (snprintf(buf, BUFSIZE, "%u:%li",
- (unsigned int)curtime, data) >= BUFSIZE)
- return;
-
- plugin_submit(MODULE_NAME, NULL, buf);
- return;
-}
-#undef BUFSIZE
-
-/* Save the data
- *
- * This function saves the data to the appropriate location by calling
- * rrd_update_file. It is used to "calculate" the filename and DS definition
- * appropriate for the given instance. */
-static void my_write(host, inst, val)
- char *host;
- char *inst;
- char *val;
-{
- rrd_update_file(host, my_rrd, val, ds_def, ds_num);
- return;
-}
-
-/* Register the plugin
- *
- * This function registers the plugin with collectd. It has to be named
- * "module_register". */
-void module_register(void)
-{
- plugin_register(MODULE_NAME, my_init, my_read, my_write);
- return;
-}
-