+/**
+ * collectd - src/utils_cms_getval.c
+ * Copyright (C) 2008 Florian octo 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
+ *
+ * Author:
+ * Florian octo Forster <octo at verplant.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+
+#include "utils_cache.h"
+
+int handle_getval (FILE *fh, char **fields, int fields_num)
+{
+ char *hostname;
+ char *plugin;
+ char *plugin_instance;
+ char *type;
+ char *type_instance;
+ gauge_t *values;
+ size_t values_num;
+
+ const data_set_t *ds;
+
+ int status;
+ int i;
+
+ if (fields_num != 2)
+ {
+ DEBUG ("unixsock plugin: Wrong number of fields: %i", fields_num);
+ fprintf (fh, "-1 Wrong number of fields: Got %i, expected 2.\n",
+ fields_num);
+ fflush (fh);
+ return (-1);
+ }
+ DEBUG ("unixsock plugin: Got query for `%s'", fields[1]);
+
+ if (strlen (fields[1]) < strlen ("h/p/t"))
+ {
+ fprintf (fh, "-1 Invalied identifier, %s", fields[1]);
+ fflush (fh);
+ return (-1);
+ }
+
+ status = parse_identifier (fields[1], &hostname,
+ &plugin, &plugin_instance,
+ &type, &type_instance);
+ if (status != 0)
+ {
+ DEBUG ("unixsock plugin: Cannot parse `%s'", fields[1]);
+ fprintf (fh, "-1 Cannot parse identifier.\n");
+ fflush (fh);
+ return (-1);
+ }
+
+ ds = plugin_get_ds (type);
+ if (ds == NULL)
+ {
+ DEBUG ("unixsock plugin: plugin_get_ds (%s) == NULL;", type);
+ fprintf (fh, "-1 Type `%s' is unknown.\n", type);
+ fflush (fh);
+ return (-1);
+ }
+
+ values = NULL;
+ values_num = 0;
+ status = uc_get_rate_by_name (fields[1], &values, &values_num);
+ if (status != 0)
+ {
+ fprintf (fh, "-1 No such value");
+ fflush (fh);
+ return (-1);
+ }
+
+ if (ds->ds_num != values_num)
+ {
+ ERROR ("ds[%s]->ds_num = %i, "
+ "but uc_get_rate_by_name returned %i values.",
+ ds->type, ds->ds_num, values_num);
+ fprintf (fh, "-1 Error reading value from cache.\n");
+ fflush (fh);
+ sfree (values);
+ return (-1);
+ }
+
+ fprintf (fh, "%u", (unsigned int) values_num);
+ for (i = 0; i < values_num; i++)
+ {
+ fprintf (fh, " %s=", ds->ds[i].name);
+ if (isnan (values[i]))
+ fprintf (fh, "NaN");
+ else
+ fprintf (fh, "%12e", values[i]);
+ }
+
+ fprintf (fh, "\n");
+ fflush (fh);
+
+ sfree (values);
+
+ return (0);
+} /* int handle_getval */
+
+/* vim: set sw=2 sts=2 ts=8 : */