From 53d04242544a69e5fe226211bfb0186414941a9f Mon Sep 17 00:00:00 2001
From: Thomas Guyot-Sionnest <dermoth@users.sourceforge.net>
Date: Wed, 19 Nov 2008 03:58:09 +0000
Subject: Add max_state_* interface warper to Nagios::Plugin object

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/Nagios-Plugin/trunk@2082 f882894a-f735-0410-b71e-b25c423dba1c

diff --git a/lib/Nagios/Plugin.pm b/lib/Nagios/Plugin.pm
index 06f313d..5f9a905 100644
--- a/lib/Nagios/Plugin.pm
+++ b/lib/Nagios/Plugin.pm
@@ -99,6 +99,12 @@ sub die {
     my $self = shift;
     Nagios::Plugin::Functions::nagios_die(@_, { plugin => $self });
 }
+sub max_state {
+    Nagios::Plugin::Functions::max_state(@_);
+}
+sub max_state_alt {
+    Nagios::Plugin::Functions::max_state_alt(@_);
+}
 
 # Override default shortname accessor to add default
 sub shortname {
@@ -483,6 +489,11 @@ Set C<$_use_die> flag if this functionality is required (see test code).
 
 Alias for nagios_die(). Deprecated.
 
+=item max_state, max_state_alt
+
+These are wrapper function for Nagios::Plugin::Functions::max_state and
+Nagios::Plugin::Functions::max_state_alt.
+
 =back
 
 =head2 THRESHOLD METHODS
diff --git a/lib/Nagios/Plugin/Functions.pm b/lib/Nagios/Plugin/Functions.pm
index a37cdaf..b44157c 100644
--- a/lib/Nagios/Plugin/Functions.pm
+++ b/lib/Nagios/Plugin/Functions.pm
@@ -19,11 +19,11 @@ our @STATUS_CODES = qw(OK WARNING CRITICAL UNKNOWN DEPENDENT);
 require Exporter;
 our @ISA = qw(Exporter);
 our @EXPORT = (@STATUS_CODES, qw(nagios_exit nagios_die check_messages));
-our @EXPORT_OK = qw(%ERRORS %STATUS_TEXT @STATUS_CODES get_shortname max_state convert $value_re);
+our @EXPORT_OK = qw(%ERRORS %STATUS_TEXT @STATUS_CODES get_shortname max_state max_state_alt convert $value_re);
 our %EXPORT_TAGS = (
     all => [ @EXPORT, @EXPORT_OK ],
     codes => [ @STATUS_CODES ],
-    functions => [ qw(nagios_exit nagios_die check_messages max_state convert) ],
+    functions => [ qw(nagios_exit nagios_die check_messages max_state max_state_alt convert) ],
 );
 
 use constant OK         => 0;
@@ -73,6 +73,15 @@ sub max_state {
 	return UNKNOWN;
 }
 
+sub max_state_alt {
+        return CRITICAL if grep { $_ == CRITICAL } @_;
+        return WARNING if grep { $_ == WARNING } @_;
+        return UNKNOWN if grep { $_ == UNKNOWN } @_;
+        return DEPENDENT if grep { $_ == DEPENDENT } @_;
+        return OK if grep { $_ == OK } @_;
+        return UNKNOWN;
+}
+
 # nagios_exit( $code, $message )
 sub nagios_exit {
     my ($code, $message, $arg) = @_;
@@ -303,6 +312,7 @@ The following variables and functions are exported only on request:
     %STATUS_TEXT
     get_shortname
     max_state
+    max_state_alt
 
 
 =head2 FUNCTIONS
@@ -395,6 +405,18 @@ imported.
 Returns the worst state in the array. Order is: CRITICAL, WARNING, OK, UNKNOWN,
 DEPENDENT
 
+The typical usage of max_state is to initialise the state as UNKNOWN and use
+it on the result of various test. If no test were performed successfully the
+state will still be UNKNOWN.
+
+=item max_state_alt(@a)
+
+Returns the worst state in the array. Order is: CRITICAL, WARNING, UNKNOWN,
+DEPENDENT, OK
+
+This is a true definition of a max state (OK last) and should be used if the
+internal tests performed can return UNKNOWN.
+
 =back
 
 =head1 SEE ALSO
diff --git a/t/Nagios-Plugin-Functions-04.t b/t/Nagios-Plugin-Functions-04.t
new file mode 100644
index 0000000..d3ff05c
--- /dev/null
+++ b/t/Nagios-Plugin-Functions-04.t
@@ -0,0 +1,21 @@
+# max_state_alt tests
+
+use strict;
+use Test::More tests => 8;
+
+BEGIN { use_ok("Nagios::Plugin::Functions", ":all") }
+
+my $new_state = max_state_alt( OK, WARNING );
+
+is( $new_state, WARNING, "Moved up to WARNING" );
+is( max_state_alt( $new_state, UNKNOWN ), WARNING, "Still at WARNING" );
+
+$new_state = max_state_alt( $new_state, CRITICAL );
+is( $new_state, CRITICAL, "Now at CRITICAL" );
+is( max_state_alt( OK, OK ), OK, "This is OK" );
+
+is( max_state_alt( OK, UNKNOWN ), UNKNOWN, "This is UNKNOWN" );
+
+is( max_state_alt( OK, OK, OK, OK, OK, WARNING ), WARNING, "Use WARNING in this list" );
+
+is( max_state_alt(), UNKNOWN, "Return UNKNOWN if no parameters" );
-- 
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