Generate DNS configuration for weighted geodns

[dns.git] / bin / mkgeo

diff --git a/bin/mkgeo b/bin/mkgeo
index bd5bfbb9ccb3a0f7fe6547eab70eecc97f3cc30b..6868af07ac7b1b00a04758dc89e892a0b2d9fd3a 100755 (executable)
--- a/bin/mkgeo
+++ b/bin/mkgeo
@@ -1,5 +1,7 @@
 #!/usr/bin/perl
 
+use v5.12;
+
 use strict;
 use warnings;
 
@@ -15,6 +17,7 @@ my $zone = shift @ARGV;
 my $targetoriginfile = shift @ARGV;
 my $origins = YAML::LoadFile($originfile);
 my $clusters = YAML::LoadFile($clusterfile);
+my $gdnsname = shift @ARGV;
 my @servers;
 
 # Initialise cluster details
@@ -268,6 +271,11 @@ foreach my $cluster (sort { $a->{name} cmp $b->{name} } values %$clusters)
     my $name = $cluster->{name};
 
     output_server($zonefile, "${name}.${zone}", $cluster);
+
+    if (@{$cluster->{servers}} > 1)
+    {
+        output_server($zonefile, "${name}-%02d.${zone}", $cluster);
+    }
 }
 
 # Output the GeoJSON text
@@ -277,6 +285,78 @@ $jsonfile->print(encode_json(\@json));
 $jsonfile->close();
 $zonefile->close();
 
+# Output gdnsd configuration
+if (defined($gdnsname))
+{
+    my $gdnsmapfile = IO::File->new("> gdns/${gdnsname}.map") || die "$!";
+    my $gdnsresourcefile = IO::File->new("> gdns/${gdnsname}.resource") || die "$!";
+    my $gdnsweightedfile = IO::File->new("> gdns/${gdnsname}.weighted") || die "$!";
+    my $continent = "";
+
+    $gdnsmapfile->print("${gdnsname} => {\n");
+    $gdnsmapfile->print("  geoip2_db => /var/lib/GeoIP/GeoLite2-Country.mmdb\n");
+    $gdnsmapfile->print("  datacenters => [" . join(",", sort(keys(%$clusters))) . "]\n");
+    $gdnsmapfile->print("  map => {\n");
+    $gdnsmapfile->print("    default => [" . join(",", sort(map { $_->{name} } grep { $_->{default} } values(%$clusters))) . "]\n");
+
+    foreach my $origin (sort { $a->{continent} cmp $b->{continent} || $a->{code} cmp $b->{code} } values %$origins)
+    {
+        my $code = $origin->{code};
+        my $cluster = $origin->{cluster}->{name};
+
+        next if $code eq "XK";
+
+        if ($continent ne $origin->{continent})
+        {
+            $gdnsmapfile->print("    }\n") if $continent;
+
+            $continent = $origin->{continent};
+
+            $gdnsmapfile->print("    ${continent} => {\n");
+        }
+
+        $gdnsmapfile->print("      ${code} => [${cluster}]\n");
+    }
+
+    $gdnsmapfile->print("    }\n") if $continent;
+
+    $gdnsmapfile->print("  }\n");
+    $gdnsmapfile->print("}\n");
+
+    $gdnsresourcefile->print("${gdnsname} => {\n");
+    $gdnsresourcefile->print("  map => ${gdnsname}\n");
+    $gdnsresourcefile->print("  dcmap => {\n");
+
+    foreach my $cluster (sort { $a->{name} cmp $b->{name} } values %$clusters)
+    {
+        my $name = $cluster->{name};
+
+        $gdnsresourcefile->print("    ${name} => ${name}.${zone}.\n");
+
+        if (@{$cluster->{servers}} > 1)
+        {
+            $gdnsweightedfile->print("${name} => {\n");
+
+            while (my($index,$server) = each @{$cluster->{servers}})
+            {
+                my $number = sprintf("%02d", $index + 1);
+                my $bandwidth = $server->{bandwidth};
+                
+                $gdnsweightedfile->print("  ${name}-${number} = [ ${name}-${number}.${zone}., ${bandwidth} ]\n");
+            }
+
+            $gdnsweightedfile->print("}\n");
+        }
+    }
+
+    $gdnsresourcefile->print("  }\n");
+    $gdnsresourcefile->print("}\n");
+
+    $gdnsweightedfile->close();
+    $gdnsresourcefile->close();
+    $gdnsmapfile->close();
+}
+
 # Output the target details in origin format if required
 YAML::DumpFile($targetoriginfile, $targetorigins) if $targetoriginfile;
 
@@ -292,8 +372,20 @@ sub match_origin
     my $match;
 
     if ($cluster->{preferred} &&
-        $cluster->{preferred}->{countries} &&
-        grep { $_ eq $origin->{country} } @{$cluster->{preferred}->{countries}})
+        $cluster->{preferred}->{origins} &&
+        grep { $_ eq $origin->{name} } @{$cluster->{preferred}->{origins}})
+    {
+        $match = "preferred";
+    }
+    elsif ($cluster->{allowed} &&
+           $cluster->{allowed}->{origins} &&
+           grep { $_ eq $origin->{name} } @{$cluster->{allowed}->{origins}})
+    {
+        $match = "allowed";
+    }
+    elsif ($cluster->{preferred} &&
+           $cluster->{preferred}->{countries} &&
+           grep { $_ eq $origin->{country} } @{$cluster->{preferred}->{countries}})
     {
         $match = "preferred";
     }
@@ -421,15 +513,15 @@ sub output_server
     my $name = shift;
     my $cluster = shift;
 
-    foreach my $server (@{$cluster->{servers}})
+    while (my($index,$server) = each @{$cluster->{servers}})
     {
         if ($server->{status} eq "up")
         {
-            $zonefile->print("+${name}:$server->{ipv4}:600\n");
+            $zonefile->printf("+${name}:$server->{ipv4}:600\n", $index + 1);
 
             if ($server->{ipv6})
             {
-#                $zonefile->print("3${name}:$server->{ipv6}:600\n");
+#                $zonefile->printf("3${name}:$server->{ipv6}:600\n", $index + 1);
             }
         }
     }