[perlcritic] fix some severity 4 issues

.perlcriticrc

@@ -44,3 +44,12 @@ severity = 5
 
 [Variables::ProhibitUnusedVariables]
 severity = 5
+
+[Modules::ProhibitMultiplePackages]
+severity = 5
+
+[Modules::RequireEndWithOne]
+severity = 5
+
+[ValuesAndExpressions::ProhibitConstantPragma]
+severity = 5

lib/Munin/Common/Defaults.pm.PL

@@ -73,7 +73,7 @@ print $fh <<'EOF';
 sub get_defaults {
     my ($class) = @_;
 
-    ## no critic
+    ## no critic qw(TestingAndDebugging::ProhibitNoStrict)
 
     no strict 'refs';
     my $defaults = {};

lib/Munin/Master/Node.pm

@@ -793,6 +793,7 @@ sub _merge_into_str_no_dup
 }
 
 # Defines the URL::scheme for munin
+## no critic qw(Modules::ProhibitMultiplePackages)
 package URI::munin;
 
 # We are like a generic server

lib/Munin/Node/SpoolWriter.pm

@@ -16,10 +16,11 @@ use Munin::Common::Utils qw( is_valid_hostname );
 
 use Params::Validate qw( :all );
 use List::Util qw( first );
+use Readonly;
 
-use constant DEFAULT_TIME => 86_400;      # put 1 day of results into a spool file
-use constant MAXIMUM_AGE  => 7;           # remove spool files more than a week old
-use constant DEFAULT_HOSTNAME => 'munin.example.com';
+Readonly my $DEFAULT_TIME => 86_400;      # put 1 day of results into a spool file
+Readonly my $MAXIMUM_AGE  => 7;           # remove spool files more than a week old
+Readonly my $DEFAULT_HOSTNAME => 'munin.example.com';
 
 sub _snap_to_epoch_boundary { my $self = shift; return $_[0] - ($_[0] % $self->{interval_size}) }
 
@@ -50,19 +51,19 @@ sub new {
     $self->{interval_size} = first { defined($_) and $_ > 0 } (
         $validated->{interval_size},
         $self->{metadata}->{interval_size},
-        DEFAULT_TIME
+        $DEFAULT_TIME
     );
 
     $self->{interval_keep} = first { defined($_) and $_ > 0 } (
         $validated->{interval_keep},
         $self->{metadata}->{interval_keep},
-        MAXIMUM_AGE,
+        $MAXIMUM_AGE,
     );
 
     $self->{hostname} = first { defined($_) and is_valid_hostname($_) } (
         $validated->{hostname},
         $self->{metadata}->{hostname},
-        DEFAULT_HOSTNAME,
+        $DEFAULT_HOSTNAME,
     );
 
     return $self;

lib/Munin/Plugin/Framework.pm

@@ -177,3 +177,5 @@ sub run {
     }
   }
 }
+
+1;

lib/Munin/Plugin/HTTP.pm

@@ -111,3 +111,5 @@ sub get_basic_credentials {
 
   return $isproxy ? () : ($ENV{'http_username'}, $ENV{'http_password'});
 }
+
+1;

script/munin-httpd

@@ -59,8 +59,6 @@ sub handle_request
 	}
 }
 
-package main;
-
 $ENV{PATH} = '/usr/bin:/bin';
 
 # start the server on port 4948