zfs_arc plugin: Use the more generic "cache_*" types …

[collectd.git] / src / collectd-nagios.c

diff --git a/src/collectd-nagios.c b/src/collectd-nagios.c
index 29e34a4..b3c1855 100644 (file)
--- a/src/collectd-nagios.c
+++ b/src/collectd-nagios.c
@@ -1,6 +1,6 @@
 /**
  * collectd-nagios - src/collectd-nagios.c
- * Copyright (C) 2008  Florian octo Forster
+ * Copyright (C) 2008-2010  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
@@ -23,6 +23,18 @@
 # include "config.h"
 #endif
 
+#ifndef _ISOC99_SOURCE
+# define _ISOC99_SOURCE
+#endif
+
+#ifndef _POSIX_C_SOURCE
+# define _POSIX_C_SOURCE 200112L
+#endif
+
+#ifndef _XOPEN_SOURCE
+# define _XOPEN_SOURCE 600
+#endif
+
 #if !defined(__GNUC__) || !__GNUC__
 # define __attribute__(x) /**/
 #endif
@@ -34,40 +46,10 @@
 #include <string.h>
 #include <strings.h>
 #include <assert.h>
-
-#include <sys/socket.h>
-#include <sys/un.h>
+#include <math.h>
 
 #include "libcollectdclient/client.h"
 
-/*
- * This is copied directly from collectd.h. Make changes there!
- */
-#if NAN_STATIC_DEFAULT
-# include <math.h>
-/* #endif NAN_STATIC_DEFAULT*/
-#elif NAN_STATIC_ISOC
-# ifndef __USE_ISOC99
-#  define DISABLE_ISOC99 1
-#  define __USE_ISOC99 1
-# endif /* !defined(__USE_ISOC99) */
-# include <math.h>
-# if DISABLE_ISOC99
-#  undef DISABLE_ISOC99
-#  undef __USE_ISOC99
-# endif /* DISABLE_ISOC99 */
-/* #endif NAN_STATIC_ISOC */
-#elif NAN_ZERO_ZERO
-# include <math.h>
-# ifdef NAN
-#  undef NAN
-# endif
-# define NAN (0.0 / 0.0)
-# ifndef isnan
-#  define isnan(f) ((f) != (f))
-# endif /* !defined(isnan) */
-#endif /* NAN_ZERO_ZERO */
-
 #define RET_OKAY     0
 #define RET_WARNING  1
 #define RET_CRITICAL 2
@@ -96,6 +78,7 @@ static char *hostname_g = NULL;
 static range_t range_critical_g;
 static range_t range_warning_g;
 static int consolitation_g = CON_NONE;
+static _Bool nan_is_error_g = 0;
 
 static char **match_ds_g = NULL;
 static int    match_ds_num_g = 0;
@@ -254,6 +237,7 @@ static void usage (const char *name)
                        "  -H <host>      Hostname to query the values for.\n"
                        "  -c <range>     Critical range\n"
                        "  -w <range>     Warning range\n"
+                       "  -m             Treat \"Not a Number\" (NaN) as critical (default: warning)\n"
                        "\n"
                        "Consolidation functions:\n"
                        "  none:          Apply the warning- and critical-ranges to each data-source\n"
@@ -280,7 +264,12 @@ static int do_check_con_none (size_t values_num,
        for (i = 0; i < values_num; i++)
        {
                if (isnan (values[i]))
-                       num_warning++;
+               {
+                       if (nan_is_error_g)
+                               num_critical++;
+                       else
+                               num_warning++;
+               }
                else if (match_range (&range_critical_g, values[i]) != 0)
                        num_critical++;
                else if (match_range (&range_warning_g, values[i]) != 0)
@@ -316,7 +305,7 @@ static int do_check_con_none (size_t values_num,
        {
                printf (" |");
                for (i = 0; i < values_num; i++)
-                       printf (" %s=%g;;;;", values_names[i], values[i]);
+                       printf (" %s=%f;;;;", values_names[i], values[i]);
        }
        printf ("\n");
 
@@ -337,11 +326,18 @@ static int do_check_con_average (size_t values_num,
        total_num = 0;
        for (i = 0; i < values_num; i++)
        {
-               if (!isnan (values[i]))
+               if (isnan (values[i]))
                {
-                       total += values[i];
-                       total_num++;
+                       if (!nan_is_error_g)
+                               continue;
+
+                       printf ("CRITICAL: Data source \"%s\" is NaN\n",
+                                       values_names[i]);
+                       return (RET_CRITICAL);
                }
+
+               total += values[i];
+               total_num++;
        }
 
        if (total_num == 0)
@@ -370,7 +366,7 @@ static int do_check_con_average (size_t values_num,
 
        printf ("%s: %g average |", status_str, average);
        for (i = 0; i < values_num; i++)
-               printf (" %s=%g;;;;", values_names[i], values[i]);
+               printf (" %s=%f;;;;", values_names[i], values[i]);
        printf ("\n");
 
        return (status_code);
@@ -389,11 +385,18 @@ static int do_check_con_sum (size_t values_num,
        total_num = 0;
        for (i = 0; i < values_num; i++)
        {
-               if (!isnan (values[i]))
+               if (isnan (values[i]))
                {
-                       total += values[i];
-                       total_num++;
+                       if (!nan_is_error_g)
+                               continue;
+
+                       printf ("CRITICAL: Data source \"%s\" is NaN\n",
+                                       values_names[i]);
+                       return (RET_CRITICAL);
                }
+
+               total += values[i];
+               total_num++;
        }
 
        if (total_num == 0)
@@ -420,7 +423,7 @@ static int do_check_con_sum (size_t values_num,
 
        printf ("%s: %g sum |", status_str, total);
        for (i = 0; i < values_num; i++)
-               printf (" %s=%g;;;;", values_names[i], values[i]);
+               printf (" %s=%f;;;;", values_names[i], values[i]);
        printf ("\n");
 
        return (status_code);
@@ -443,8 +446,19 @@ static int do_check_con_percentage (size_t values_num,
        }
 
        for (i = 0; i < values_num; i++)
-               if (!isnan (values[i]))
-                       sum += values[i];
+       {
+               if (isnan (values[i]))
+               {
+                       if (!nan_is_error_g)
+                               continue;
+
+                       printf ("CRITICAL: Data source \"%s\" is NaN\n",
+                                       values_names[i]);
+                       return (RET_CRITICAL);
+               }
+
+               sum += values[i];
+       }
 
        if (sum == 0.0)
        {
@@ -563,7 +577,7 @@ int main (int argc, char **argv)
        {
                int c;
 
-               c = getopt (argc, argv, "w:c:s:n:H:g:d:h");
+               c = getopt (argc, argv, "w:c:s:n:H:g:d:hm");
                if (c < 0)
                        break;
 
@@ -623,6 +637,9 @@ int main (int argc, char **argv)
                                match_ds_num_g++;
                                break;
                        }
+                       case 'm':
+                               nan_is_error_g = 1;
+                               break;
                        default:
                                usage (argv[0]);
                } /* switch (c) */