X-Git-Url: https://git.openstreetmap.org./dns.git/blobdiff_plain/877f3248ef7b5d6c51260b13983bc19c74f153dc..191e37e08db0f5bd7f60bb1ab0137d90bcdc2125:/bin/mkgeo diff --git a/bin/mkgeo b/bin/mkgeo index f7e6d81..400fff7 100755 --- a/bin/mkgeo +++ b/bin/mkgeo @@ -1,5 +1,7 @@ #!/usr/bin/perl +use v5.12; + use strict; use warnings; @@ -7,199 +9,432 @@ use IO::File; use Math::Trig qw(deg2rad pip2 great_circle_distance); use JSON::XS; use LWP::UserAgent; -use XML::Writer; -use XML::TreeBuilder; use YAML; -my $source = shift @ARGV; +my $originfile = shift @ARGV; +my $clusterfile = shift @ARGV; my $zone = shift @ARGV; -my $servers = YAML::LoadFile("src/${source}"); +my $targetoriginfile = shift @ARGV; +my $origins = YAML::LoadFile($originfile); +my $clusters = YAML::LoadFile($clusterfile); +my $gdnsname = shift @ARGV; +my @servers; + +# Initialise cluster details +while (my($name,$cluster) = each %$clusters) +{ + if ($cluster->{servers}) + { + $cluster->{bandwidth} = 0; + + foreach my $server (@{$cluster->{servers}}) + { + $server->{cluster} = $cluster; + $cluster->{bandwidth} = $cluster->{bandwidth} + $server->{bandwidth}; + + push @servers, $server; + } + } + else + { + my $server = { + cluster => $cluster, + statuscake => $cluster->{statuscake}, + bandwidth => $cluster->{bandwidth}, + ipv4 => $cluster->{ipv4}, + ipv6 => $cluster->{ipv6} + }; -foreach my $server (values %$servers) + $cluster->{servers} = [ $server ]; + + push @servers, $server; + } + + $cluster->{name} = $name; + $cluster->{status} = "down"; +} + +# Initialise server details +foreach my $server (@servers) { - $server->{status} = "down"; + $server->{status} = "up"; } -if ($ENV{PINGDOM_USERNAME} && $ENV{PINGDOM_PASSWORD}) +# If statuscake support is enabled then check which servers are up +if ($ENV{STATUSCAKE_USERNAME} && $ENV{STATUSCAKE_APIKEY}) { my $ua = LWP::UserAgent->new; + my $cache; + + $ua->agent("mkgeo/1.0"); + $ua->default_header("Username", $ENV{STATUSCAKE_USERNAME}); + $ua->default_header("API", $ENV{STATUSCAKE_APIKEY}); + + if (-f "statuscake.yml") + { + $cache = YAML::LoadFile("statuscake.yml"); + } + else + { + $cache = {}; + } + + my $response = $ua->get("https://app.statuscake.com/API/Tests/"); + + if ($response->is_success) + { + my $tests = decode_json($response->content); - $ua->default_header("App-Key", "2cohi62u5haxvqmypk3ljqqrze1jufrh"); - $ua->credentials("api.pingdom.com:443", "Pingdom API", $ENV{PINGDOM_USERNAME}, $ENV{PINGDOM_PASSWORD}); + foreach my $test (@$tests) + { + my $testid = $test->{TestID}; + + if ($test->{Status} eq "Up" && !$test->{Paused}) + { + $cache->{$testid} = "up"; + } + else + { + $cache->{$testid} = "down"; + } + } + } - foreach my $server (values %$servers) + foreach my $server (@servers) { - if (my $checkid = $server->{pingdom}) + if (my $testids = $server->{statuscake}) { - my $response = $ua->get("https://api.pingdom.com/api/2.0/checks/${checkid}"); + $server->{status} = "up"; - if ($response->is_success) + for my $testid (@$testids) { - my $check = decode_json($response->content); + my $testresult = $cache->{$testid} || "down"; - $server->{status} = $check->{check}->{status}; + $server->{status} = "down" if $testresult eq "down"; } } + else + { + $server->{status} = "down"; + } } -} -my %countries = (); + YAML::DumpFile("statuscake.yml", $cache); +} -my $countries = XML::TreeBuilder->new; +# Mark a cluster as up if any servers are up +foreach my $server (@servers) +{ + if ($server->{status} eq "up") + { + $server->{cluster}->{status} = "up"; + } + else + { + $server->{cluster}->{bandwidth} = $server->{cluster}->{bandwidth} - $server->{bandwidth}; + } +} -$countries->parsefile("lib/countries.xml"); +# Create target origins object +my $targetorigins = {}; -foreach my $country ($countries->look_down("_tag" => "country")) +# Initialise cluster details +while (my($name,$cluster) = each %$clusters) { - my $code = $country->look_down("_tag" => "countryCode")->as_text; - my $name = $country->look_down("_tag" => "countryName")->as_text; - my $continent = $country->look_down("_tag" => "continent")->as_text; - my $west = $country->look_down("_tag" => "west")->as_text; - my $north = $country->look_down("_tag" => "north")->as_text; - my $east = $country->look_down("_tag" => "east")->as_text; - my $south = $country->look_down("_tag" => "south")->as_text; - my $lat = centre_lat( $south, $north ); - my $lon = centre_lon( $west, $east ); - my @servers; + $cluster->{bandwidth_limit} = $cluster->{bandwidth} * 1024 * 1024; + $cluster->{bandwidth_used} = 0; + + $targetorigins->{$cluster->{name}} = { + code => $cluster->{name}, + name => $cluster->{name}, + lat => $cluster->{lat}, + lon => $cluster->{lon}, + bandwidth => 0 + }; +} + +my @mappings = (); - foreach my $servername (keys %$servers) +# Scan origins and work out which clusters each can use +foreach my $origin (values %$origins) +{ + foreach my $cluster (values %$clusters) { - my $server = $servers->{$servername}; - my $match = match_country($server, $code, $continent); + my $match = match_origin($cluster, $origin); - if ($match eq "preferred" || $match eq "allowed") + if ($cluster->{status} eq "up" && $match ne "denied") { my $priority = $match eq "preferred" ? 20 : 10; - my $distance = distance($lat, $lon, $server->{lat}, $server->{lon}); + my $distance = distance($origin->{lat}, $origin->{lon}, $cluster->{lat}, $cluster->{lon}); + + push @mappings, { + origin => $origin, cluster => $cluster, + priority => $priority, distance => $distance + }; + } + } +} - $priority = $priority * 10 if $server->{status} eq "up"; +# Allocate each country to a cluster +allocate_clusters(@mappings); -# print STDERR "$servername is $match for $name with distance $distance\n"; +# If we failed to allocate every origin then loop, increasing +# the bandwidth for each cluster by a little and retrying until +# we manage to allocate everything +while (grep { !exists($_->{cluster}) } values %$origins) +{ + # Clear any existing mappings of countries to clusters + foreach my $origin (values %$origins) + { + delete $origin->{cluster}; + } - push @servers, { name => $servername, priority => $priority, distance => $distance }; - } + # Reset bandwidth usage for clusters and increase limits by 10% + foreach my $cluster (values %$clusters) + { + $cluster->{bandwidth_used} = 0; + $cluster->{bandwidth_limit} = $cluster->{bandwidth_limit} * 1.1; } - $countries{$code} = { - code => $code, name => $name, continent => $continent, - lat => $lat, lon => $lon, servers => \@servers - }; + # Try the allocate again + allocate_clusters(@mappings); } -$countries->delete; +# Create JSON collection object +my @json; -my $zonefile = IO::File->new("> data/${zone}") || die "$!"; -my $kmlfile = IO::File->new("> kml/${zone}.kml") || die "$!"; -my $kmlwriter = XML::Writer->new(OUTPUT => $kmlfile, ENCODING => 'utf-8'); +# Open output files +my $zonefile = IO::File->new("> include/${zone}.js") || die "$!"; +my $jsonfile = IO::File->new("> json/${zone}.json") || die "$!"; -$kmlwriter->xmlDecl(); -$kmlwriter->startTag("kml", "xmlns" => "http://www.opengis.net/kml/2.2"); -$kmlwriter->startTag("Document"); +# Output headers +$zonefile->print("var \U${zone}\E_RECORDS = [\n"); -foreach my $country (values %countries) +# Output details for each country +foreach my $origin (sort { $a->{name} cmp $b->{name} } values %$origins) { - my @servers = sort { $b->{priority} <=> $a->{priority} || $a->{distance} <=> $b->{distance} } @{$country->{servers}}; - my $server = $servers->{$servers[0]->{name}}; - my $clon = $country->{lon}; - my $clat = $country->{lat}; - my $slon = $server->{lon}; - my $slat = $server->{lat}; + my $cluster = $origin->{cluster}; + my $clon = $origin->{lon}; + my $clat = $origin->{lat}; + my $slon = $cluster->{lon}; + my $slat = $cluster->{lat}; if ($clon > 0 && $slon < 0 && 360 + $slon - $clon < $clon - $slon) { - $clon = $clon - 360; + $slon = $slon + 360; } elsif ($slon > 0 && $clon < 0 && 360 + $clon - $slon < $slon - $clon) { - $slon = $slon - 360; + $clon = $clon + 360; } - $zonefile->print("C\L$country->{code}\E.${zone}:$servers[0]->{name}.${zone}:600\n"); + if (!defined($gdnsname)) + { + $zonefile->print(" CNAME(\"\L$origin->{code}\E.${zone}\", \"$cluster->{name}.${zone}.openstreetmap.org.\", TTL(\"10m\")),\n"); + } - $kmlwriter->startTag("Placemark"); - $kmlwriter->dataElement("name", $country->{name}); - $kmlwriter->startTag("LineString"); - $kmlwriter->dataElement("coordinates", "$clon,$clat $slon,$slat"); - $kmlwriter->endTag("LineString"); - $kmlwriter->endTag("Placemark"); + push @json, { + type => "Feature", + geometry => { + type => "LineString", + coordinates => [ [ $clon, $clat ], [ $slon, $slat ] ] + }, + properties => { + origin => $origin->{name}, + server => $cluster->{name}, + colour => $cluster->{colour} + } + }; + + $targetorigins->{$cluster->{name}}->{bandwidth} += $origin->{bandwidth}; } -foreach my $server (grep { $servers->{$_}->{default} } keys %$servers) +# Skip default records if we don't need them +if (!defined($gdnsname)) { - $zonefile->print("Cxx.${zone}:${server}.${zone}:600\n"); + # Output default records for IPs that can't be mapped to a country + foreach my $cluster (sort { $a->{name} cmp $b->{name} } values %$clusters) + { + my $name = $cluster->{name}; + + if (my $default = $cluster->{default}) + { + output_server($zonefile, "${default}.${zone}", $cluster); + } + elsif (exists($cluster->{default})) + { + output_server($zonefile, "${zone}", $cluster); + } + } } -$kmlwriter->endTag("Document"); -$kmlwriter->endTag("kml"); -$kmlwriter->end(); +# Output A records for each cluster +foreach my $cluster (sort { $a->{name} cmp $b->{name} } values %$clusters) +{ + my $name = $cluster->{name}; -$kmlfile->close(); -$zonefile->close(); + output_server($zonefile, "${name}.${zone}", $cluster); -exit 0; + if (@{$cluster->{servers}} > 1) + { + output_server($zonefile, "${name}-%02d.${zone}", $cluster); + } +} -sub centre_lat -{ - my $south = shift; - my $north = shift; +# Output the GeoJSON text +$jsonfile->print(encode_json(\@json)); - return ( $south + $north ) / 2; -} +# Output footers +$zonefile->print("];\n"); -sub centre_lon -{ - my $west = shift; - my $east = shift; - my $lon; +# Close the output files +$zonefile->close(); +$zonefile->close(); - if ($west < $east) +# Output gdnsd configuration +if (defined($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 => /usr/share/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) { - $lon = ( $west + $east ) / 2; + 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"); } - else + + $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) { - $lon = ( $west + $east + 360 ) / 2; + my $name = $cluster->{name}; + + if (@{$cluster->{servers}} > 1) + { + $gdnsweightedfile->print("${name} => {\n"); + + while (my($index,$server) = each @{$cluster->{servers}}) + { + if ($server->{status} eq "up") + { + my $number = sprintf("%02d", $index + 1); + my $bandwidth = $server->{bandwidth}; + + $gdnsweightedfile->print(" ${name}-${number} = [ ${name}-${number}.${zone}., ${bandwidth} ]\n"); + } + } + + $gdnsweightedfile->print("}\n"); + + $gdnsresourcefile->print(" ${name} => %weighted!${name}\n"); + } + else + { + $gdnsresourcefile->print(" ${name} => ${name}.${zone}.\n"); + } } - $lon = $lon - 360 if $lon > 180; + $gdnsresourcefile->print(" }\n"); + $gdnsresourcefile->print("}\n"); - return $lon + $gdnsweightedfile->close(); + $gdnsresourcefile->close(); + $gdnsmapfile->close(); } -sub match_country +# Output the target details in origin format if required +YAML::DumpFile($targetoriginfile, $targetorigins) if $targetoriginfile; + +exit 0; + +# +# Match an origin against a cluster +# +sub match_origin { - my $server = shift; - my $country = shift; - my $continent = shift; + my $cluster = shift; + my $origin = shift; my $match; - if ($server->{preferred} && - $server->{preferred}->{countries} && - grep { $_ eq $country } @{$server->{preferred}->{countries}}) + if ($cluster->{preferred} && + $cluster->{preferred}->{origins} && + grep { $_ eq $origin->{name} } @{$cluster->{preferred}->{origins}}) { $match = "preferred"; } - elsif ($server->{preferred} && - $server->{preferred}->{continents} && - grep { $_ eq $continent } @{$server->{preferred}->{continents}}) + 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}}) { $match = "preferred"; } - elsif ($server->{allowed} && - $server->{allowed}->{countries} && - grep { $_ eq $country } @{$server->{allowed}->{countries}}) + elsif ($cluster->{allowed} && + $cluster->{allowed}->{countries} && + grep { $_ eq $origin->{country} } @{$cluster->{allowed}->{countries}}) { $match = "allowed"; } - elsif ($server->{allowed} && - $server->{allowed}->{continents} && - grep { $_ eq $continent } @{$server->{allowed}->{continents}}) + elsif ($cluster->{denied} && + $cluster->{denied}->{countries} && + grep { $_ eq $origin->{country} } @{$cluster->{denied}->{countries}}) + { + $match = "denied"; + } + elsif ($cluster->{preferred} && + $cluster->{preferred}->{continents} && + grep { $_ eq $origin->{continent} } @{$cluster->{preferred}->{continents}}) + { + $match = "preferred"; + } + elsif ($cluster->{allowed} && + $cluster->{allowed}->{continents} && + grep { $_ eq $origin->{continent} } @{$cluster->{allowed}->{continents}}) { $match = "allowed"; } - elsif ($server->{allowed}) + elsif ($cluster->{denied} && + $cluster->{denied}->{continents} && + grep { $_ eq $origin->{continent} } @{$cluster->{denied}->{continents}}) + { + $match = "denied"; + } + elsif ($cluster->{allowed}) { - $match = "none"; + $match = "denied"; } else { @@ -209,6 +444,9 @@ sub match_country return $match; } +# +# Compute the great circle distance between two points +# sub distance { my $lat1 = deg2rad(shift); @@ -218,3 +456,92 @@ sub distance return great_circle_distance($lon1, pip2 - $lat1, $lon2, pip2 - $lat2); } + +# +# Allocate each origin to a cluster +# +sub allocate_clusters +{ + my @mappings = sort { compare_mappings($a, $b) } @_; + + # Loop over the mappings, trying to assign each origin to the + # nearest cluster, but subject to the bandwidth limits + while (my $mapping = shift @mappings) + { + my @group; + + push @group, $mapping; + + while (@mappings && compare_mappings($mapping, $mappings[0]) == 0) + { + push @group, shift @mappings; + } + + for my $mapping (sort compare_bandwidth @group) + { + my $origin = $mapping->{origin}; + my $cluster = $mapping->{cluster}; + + if (!exists($origin->{cluster}) && + $cluster->{bandwidth_used} + $origin->{bandwidth} <= $cluster->{bandwidth_limit}) + { + $origin->{cluster} = $cluster; + $cluster->{bandwidth_used} = $cluster->{bandwidth_used} + $origin->{bandwidth}; + } + } + } + + return; +} + +# +# Compare two mappings to decide which to use +# +sub compare_mappings +{ + my $a = shift; + my $b = shift; + + return $b->{priority} <=> $a->{priority} || + $a->{distance} <=> $b->{distance}; +} + +# +# Compare two mappings to decide which to try first +# +sub compare_bandwidth +{ + my $a_used = ( $a->{cluster}->{bandwidth_used} * 100.0 ) / ( $a->{cluster}->{bandwidth_limit} * 1.0 ); + my $b_used = ( $b->{cluster}->{bandwidth_used} * 100.0 ) / ( $b->{cluster}->{bandwidth_limit} * 1.0 ); + + return $a_used <=> $b_used; +} + +# +# Output DNS records for a server +# +sub output_server +{ + my $zonefile = shift; + my $name = shift; + my $cluster = shift; + + while (my($index,$server) = each @{$cluster->{servers}}) + { + if ($server->{status} eq "up") + { + $zonefile->printf(" A(\"${name}\", \"$server->{ipv4}\", TTL(\"10m\")),\n", $index + 1); + + if ($server->{ipv6}) + { + my $ipv6 = $server->{ipv6}; + + $ipv6 =~ s/([0-9a-f]{4})(?=.)/$1:/ig; + + $zonefile->printf(" AAAA(\"${name}\", \"${ipv6}\", TTL(\"10m\")),\n", $index + 1); + } + } + } + + return; +}