filter_ignore plugin: Add a simple plugin to ignore specific identifiers.

Still needs documentation and testing.

diff --git a/configure.in b/configure.in
index d416e69..90ac462 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -2791,6 +2791,7 @@ AC_PLUGIN([email],       [yes],                [EMail statistics])
 AC_PLUGIN([entropy],     [$plugin_entropy],    [Entropy statistics])
 AC_PLUGIN([exec],        [yes],                [Execution of external programs])
 AC_PLUGIN([filecount],   [yes],                [Count files in directories])
+AC_PLUGIN([filter_ignore], [yes],                [Ignore specific values])
 AC_PLUGIN([hddtemp],     [yes],                [Query hddtempd])
 AC_PLUGIN([interface],   [$plugin_interface],  [Interface traffic statistics])
 AC_PLUGIN([iptables],    [$with_libiptc],      [IPTables rule counters])
@@ -2961,6 +2962,7 @@ Configuration:
     entropy . . . . . . . $enable_entropy
     exec  . . . . . . . . $enable_exec
     filecount . . . . . . $enable_filecount
+    filter_ignore . . . . $enable_filter_ignore
     hddtemp . . . . . . . $enable_hddtemp
     interface . . . . . . $enable_interface
     iptables  . . . . . . $enable_iptables

diff --git a/src/Makefile.am b/src/Makefile.am
index b20d700..2196d32 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -274,6 +274,14 @@ collectd_LDADD += "-dlopen" filecount.la
 collectd_DEPENDENCIES += filecount.la
 endif
 
+if BUILD_PLUGIN_FILTER_IGNORE
+pkglib_LTLIBRARIES += filter_ignore.la
+filter_ignore_la_SOURCES = filter_ignore.c
+filter_ignore_la_LDFLAGS = -module -avoid-version
+collectd_LDADD += "-dlopen" filter_ignore.la
+collectd_DEPENDENCIES += filter_ignore.la
+endif
+
 if BUILD_PLUGIN_HDDTEMP
 pkglib_LTLIBRARIES += hddtemp.la
 hddtemp_la_SOURCES = hddtemp.c

diff --git a/src/filter_ignore.c b/src/filter_ignore.c
new file mode 100644 (file)
index 0000000..1958884
--- /dev/null
+++ b/src/filter_ignore.c
@@ -0,0 +1,147 @@
+/**
+ * collectd - src/entropy.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
+ *
+ * Authors:
+ *   Florian octo Forster <octo at verplant.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "configfile.h"
+#include "utils_ignorelist.h"
+
+/*
+ * Variables
+ */
+static ignorelist_t *il_host   = NULL;
+static ignorelist_t *il_plugin = NULL;
+static ignorelist_t *il_type   = NULL;
+
+static const char *config_keys[] =
+{
+  "IgnoreHost",
+  "IgnorePlugin",
+  "IgnoreType"
+};
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+
+/*
+ * Functions
+ */
+static int ignorelist_add_create (ignorelist_t **il_ptr, const char *entry)
+{
+  ignorelist_t *il;
+  int status;
+
+  il = *il_ptr;
+
+  if (il == NULL)
+  {
+    il = ignorelist_create (/* ignore = */ 0);
+    if (il == NULL)
+    {
+      ERROR ("filter_ignore plugin: ignorelist_create failed.");
+      return (-1);
+    }
+    *il_ptr = il;
+  }
+
+  status = ignorelist_add (il, entry);
+  if (status != 0)
+  {
+    ERROR ("filter_ignore plugin: ignorelist_add failed with error %i.",
+        status);
+    return (status);
+  }
+
+  return (0);
+} /* int ignorelist_add_create */
+
+static int fi_config (const char *key, const char *value)
+{
+  int status;
+
+  status = 0;
+
+  if (strcasecmp ("IgnoreHost", key) == 0)
+    status = ignorelist_add_create (&il_host, value);
+  else if (strcasecmp ("IgnorePlugin", key) == 0)
+    status = ignorelist_add_create (&il_plugin, value);
+  else if (strcasecmp ("IgnoreType", key) == 0)
+    status = ignorelist_add_create (&il_type, value);
+  else
+    return (-1);
+    
+  if (status < 0)
+    status = status * (-1);
+
+  return (status);
+} /* int fi_config */
+
+static int fi_filter (const data_set_t *ds, value_list_t *vl)
+{
+  int status;
+
+  if (il_host != NULL)
+  {
+    status = ignorelist_match (il_host, vl->host);
+    if (status != 0)
+      return (FILTER_IGNORE);
+  }
+
+  if (il_plugin != NULL)
+  {
+    char buffer[2 * DATA_MAX_NAME_LEN];
+
+    if (vl->plugin_instance[0] == 0)
+      sstrncpy (buffer, vl->plugin, sizeof (buffer));
+    else
+      ssnprintf (buffer, sizeof (buffer), "%s-%s",
+          vl->plugin, vl->plugin_instance);
+
+    status = ignorelist_match (il_plugin, buffer);
+    if (status != 0)
+      return (FILTER_IGNORE);
+  }
+
+  if (il_type != NULL)
+  {
+    char buffer[2 * DATA_MAX_NAME_LEN];
+
+    if (vl->type_instance[0] == 0)
+      sstrncpy (buffer, vl->type, sizeof (buffer));
+    else
+      ssnprintf (buffer, sizeof (buffer), "%s-%s",
+          vl->type, vl->type_instance);
+
+    status = ignorelist_match (il_type, buffer);
+    if (status != 0)
+      return (FILTER_IGNORE);
+  }
+
+  return (0);
+} /* int fi_filter */
+
+void module_register (void)
+{
+  plugin_register_config ("filter_ignore", fi_config,
+      config_keys, config_keys_num);
+  plugin_register_filter ("filter_ignore", fi_filter);
+} /* void module_register */
+
+/* vim: set sw=2 sts=2 et fdm=marker : */