src/utils_cmd_flush.c: Add the `identifier' option.

Using something like
  FLUSH plugin=rrdtool identifier=localhost/cpu-0/cpu-idle
will now only flush the local cpu-0/cpu-idle value, only using the rrdtool
plugin.

This is meant to be used in frontends which want to display up-to-date graphs
but there are too many hosts/rrd files to update them ``live'', i. e. without
caching.

diff --git a/src/utils_cmd_flush.c b/src/utils_cmd_flush.c
index 6fa8b7b..7feaac2 100644 (file)
--- a/src/utils_cmd_flush.c
+++ b/src/utils_cmd_flush.c
@@ -33,12 +33,31 @@
                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 **fields, int fields_num)
 {
        int success = 0;
        int error   = 0;
 
        int timeout = -1;
+       char **plugins = NULL;
+       int plugins_num = 0;
+       char **identifiers = NULL;
+       int identifiers_num = 0;
 
        int i;
 
@@ -49,12 +68,17 @@ int handle_flush (FILE *fh, char **fields, int fields_num)
 
                if (strncasecmp ("plugin=", option, strlen ("plugin=")) == 0)
                {
-                       char *plugin = option + strlen ("plugin=");
+                       char *plugin;
+                       
+                       plugin = option + strlen ("plugin=");
+                       add_to_array (&plugins, &plugins_num, plugin);
+               }
+               else if (strncasecmp ("identifier=", option, strlen ("identifier=")) == 0)
+               {
+                       char *identifier;
 
-                       if (0 == plugin_flush_one (timeout, plugin))
-                               ++success;
-                       else
-                               ++error;
+                       identifier = option + strlen ("identifier=");
+                       add_to_array (&identifiers, &identifiers_num, identifier);
                }
                else if (strncasecmp ("timeout=", option, strlen ("timeout=")) == 0)
                {
@@ -79,6 +103,35 @@ int handle_flush (FILE *fh, char **fields, int fields_num)
                }
        }
 
+       /* 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, timeout, identifier);
+                       if (status == 0)
+                               success++;
+                       else
+                               error++;
+               }
+       }
+
        if ((success + error) > 0)
        {
                print_to_socket (fh, "0 Done: %i successful, %i errors\n",