Add a module for functions shared between conf and op mode scripts.

1 files changed, 126 insertions, 0 deletions

diff --git a/lib/Vyatta/Qos/Shared.pm b/lib/Vyatta/Qos/Shared.pm
new file mode 100644
index 0000000..b6b8b5d
--- /dev/null
+++ b/lib/Vyatta/Qos/Shared.pm
@@ -0,0 +1,126 @@
+# Wrappers for iproute2 utilities
+#
+# **** License ****
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# 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.
+#
+# This code was originally developed by Vyatta, Inc.
+# Portions created by Vyatta are Copyright (C) 2008 Vyatta, Inc.
+# All Rights Reserved.
+# **** End License ****
+
+package Vyatta::Qos::Shared;
+use strict;
+use warnings;
+use lib '/opt/vyatta/share/perl5';
+use Vyatta::Config;
+use Vyatta::Interface;
+use Vyatta::Misc;
+use vars qw(%policies);
+
+our @EXPORT =
+   qw(find_policy interfaces_using get_policy_names list_policy %policies);
+#our @EXPORT_OK = qw(getIfIndex);
+use base qw(Exporter);
+
+our %policies = ( 
+    'out' => {
+        'shaper'           => 'TrafficShaper',
+        'fair-queue'       => 'FairQueue',
+        'rate-control'     => 'RateLimiter',
+        'drop-tail'        => 'DropTail',
+        'network-emulator' => 'NetworkEmulator',
+        'round-robin'      => 'RoundRobin',
+        'priority-queue'   => 'Priority',
+        'random-detect'    => 'RandomDetect',
+    },  
+    'in' => {
+        'limiter' => 'TrafficLimiter',
+    }   
+);
+
+# find policy for name - also check for duplicates
+# find_policy('limited')
+sub find_policy {
+    my $name   = shift;
+    my $config = new Vyatta::Config;
+
+    # op or conf mode?
+    my $mode = $config->inSession();
+    my $exists = ($mode ? 'exists': 'isEffective');
+    my $listNodes = ($mode ? 'listNodes' : 'listEffectiveNodes');
+
+    $config->setLevel('traffic-policy');
+    my @policy = grep { $config->$exists("$_ $name") } $config->$listNodes();
+
+    die "Policy name \"$name\" conflict, used by: ", join( ' ', @policy ), "\n"
+        if ( $#policy > 0 );
+
+   return $policy[0];
+}
+
+# return array of references to (name, direction, policy)
+sub interfaces_using {
+    my $policy = shift;
+    my $config = new Vyatta::Config;
+    my @inuse  = ();
+
+    # op or conf mode?
+    my $mode = $config->inSession();
+    my $listNodes = ($mode ? 'listNodes' : 'listEffectiveNodes');
+    my $returnValue = ($mode ? 'returnValue' : 'returnEffectiveValue');
+
+    foreach my $name ( getInterfaces() ) {
+        my $intf = new Vyatta::Interface($name);
+        next unless $intf;
+        my $level = $intf->path() . ' traffic-policy';
+        $config->setLevel($level);
+
+        foreach my $direction ($config->$listNodes()) {
+            my $cur = $config->$returnValue($direction);
+            next unless $cur;
+
+            # these are arguments to update_interface()
+            push @inuse, [ $name, $direction, $policy ]
+                if ($cur eq $policy);
+        }
+    }
+    return @inuse;
+}
+
+# return array of defined qos policy names
+sub get_policy_names {
+    my $config = new Vyatta::Config;
+    my @names = ();
+    my @args = @_;
+
+    # op or conf mode?
+    my $mode = $config->inSession();
+    my $listNodes = ($mode ? 'listNodes' : 'listEffectiveNodes');
+
+    $config->setLevel('traffic-policy');
+
+    foreach my $direction ( @args ) { 
+        my @qos = grep { $policies{$direction}{$_} } $config->$listNodes();
+        foreach my $type (@qos) {
+            my @n = $config->$listNodes($type);
+            push @names, @n; 
+        }   
+    }
+    return @names;
+}
+
+# list all policy names
+sub list_policy {
+    my @args = @_;
+    my @names = get_policy_names(@args);
+    print join( ' ', @names ), "\n";
+}
+
+1;