text: /**
   * collectd - src/utils_cmd_flush.c
   * Copyright (C) 2008  Sebastian Harl
   * Copyright (C) 2008  Florian Forster
   *
   * This program 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; only version 2 of the License is applicable.
   *
   * 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.,
   * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
   *
   * Authors:
   *   Sebastian "tokkee" Harl <sh at tokkee.org>
   *   Florian "octo" Forster <octo at verplant.org>
   **/
  
  #include "collectd.h"
  #include "common.h"
  #include "plugin.h"
  #include "utils_parse_option.h"
  
  #define print_to_socket(fh, ...) \
  	if (fprintf (fh, __VA_ARGS__) < 0) { \
  		char errbuf[1024]; \
  		WARNING ("handle_flush: failed to write to socket #%i: %s", \
  				fileno (fh), sstrerror (errno, errbuf, sizeof (errbuf))); \
  		return -1; \
  	}
  
  static int add_to_array (char ***array, int *array_num, char *value)
  {
  	char **temp;
  
  	temp = (char **) realloc (*array, sizeof (char *) * (*array_num + 1));
  	if (temp == NULL)
  		return (-1);
  
  	*array = temp;
  	(*array)[*array_num] = value;
  	(*array_num)++;
  
  	return (0);
  } /* int add_to_array */
  
  int handle_flush (FILE *fh, char *buffer)
  {
  	int success = 0;
  	int error   = 0;
  
  	double timeout = 0.0;
  	char **plugins = NULL;
  	int plugins_num = 0;
  	char **identifiers = NULL;
  	int identifiers_num = 0;
  
  	int i;
  
  	if ((fh == NULL) || (buffer == NULL))
  		return (-1);
  
  	DEBUG ("utils_cmd_flush: handle_flush (fh = %p, buffer = %s);",
  			(void *) fh, buffer);
  
  	if (strncasecmp ("FLUSH", buffer, strlen ("FLUSH")) != 0)
  	{
  		print_to_socket (fh, "-1 Cannot parse command.\n");
  		return (-1);
  	}
  	buffer += strlen ("FLUSH");
  
  	while (*buffer != 0)
  	{
  		char *opt_key;
  		char *opt_value;
  		int status;
  
  		opt_key = NULL;
  		opt_value = NULL;
  		status = parse_option (&buffer, &opt_key, &opt_value);
  		if (status != 0)
  		{
  			print_to_socket (fh, "-1 Parsing options failed.\n");
  			sfree (plugins);
  			sfree (identifiers);
  			return (-1);
  		}
  
  		if (strcasecmp ("plugin", opt_key) == 0)
  		{
  			add_to_array (&plugins, &plugins_num, opt_value);
  		}
  		else if (strcasecmp ("identifier", opt_key) == 0)
  		{
  			add_to_array (&identifiers, &identifiers_num, opt_value);
  		}
  		else if (strcasecmp ("timeout", opt_key) == 0)
  		{
  			char *endptr;
  			
  			errno = 0;
  			endptr = NULL;
  			timeout = strtod (opt_value, &endptr);
  
  			if ((endptr == opt_value) || (errno != 0) || (!isfinite (timeout)))
  			{
  				print_to_socket (fh, "-1 Invalid value for option `timeout': "
  						"%s\n", opt_value);
  				sfree (plugins);
  				sfree (identifiers);
  				return (-1);
  			}
  			else if (timeout < 0.0)
  			{
  				timeout = 0.0;
  			}
  		}
  		else
  		{
  			print_to_socket (fh, "-1 Cannot parse option %s\n", opt_key);
  			sfree (plugins);
  			sfree (identifiers);
  			return (-1);
  		}
  	} /* while (*buffer != 0) */
  
  	/* Add NULL entries for `any plugin' and/or `any value' if nothing was
  	 * specified. */
  	if (plugins_num == 0)
  		add_to_array (&plugins, &plugins_num, NULL);
  
  	if (identifiers_num == 0)
  		add_to_array (&identifiers, &identifiers_num, NULL);
  
  	for (i = 0; i < plugins_num; i++)
  	{
  		char *plugin;
  		int j;
  
  		plugin = plugins[i];
  
  		for (j = 0; j < identifiers_num; j++)
  		{
  			char *identifier;
  			int status;
  
  			identifier = identifiers[j];
  			status = plugin_flush (plugin,
  					DOUBLE_TO_CDTIME_T (timeout),
  					identifier);
  			if (status == 0)
  				success++;
  			else
  				error++;
  		}
  	}
  
  	if ((success + error) > 0)
  	{
  		print_to_socket (fh, "0 Done: %i successful, %i errors\n",
  				success, error);
  	}
  	else
  	{
  		plugin_flush (NULL, timeout, NULL);
  		print_to_socket (fh, "0 Done\n");
  	}
  
  	sfree (plugins);
  	sfree (identifiers);
  	return (0);
  } /* int handle_flush */
  
  /* vim: set sw=4 ts=4 tw=78 noexpandtab : */
  
  