Example usage for io.netty.resolver.dns DnsAddressResolverGroup DnsAddressResolverGroup

Introduction

In this page you can find the example usage for io.netty.resolver.dns DnsAddressResolverGroup DnsAddressResolverGroup.

Prototype

public DnsAddressResolverGroup(ChannelFactory<? extends DatagramChannel> channelFactory,
            DnsServerAddressStreamProvider nameServerProvider) 

Source Link

Usage

From source file:com.linecorp.armeria.client.RemoteInvokerFactory.java

License:Apache License

private RemoteInvokerFactory(RemoteInvokerOptions options,
        Function<TransportType, ThreadFactory> threadFactoryFactory) {

    requireNonNull(options, "options");
    requireNonNull(threadFactoryFactory, "threadFactoryFactory");

    final Bootstrap baseBootstrap = new Bootstrap();

    baseBootstrap.channel(channelType());
    baseBootstrap.resolver(options.addressResolverGroup().orElseGet(
            () -> new DnsAddressResolverGroup(datagramChannelType(), DnsServerAddresses.defaultAddresses())));

    baseBootstrap.option(ChannelOption.CONNECT_TIMEOUT_MILLIS,
            ConvertUtils.safeLongToInt(options.connectTimeoutMillis()));
    baseBootstrap.option(ChannelOption.SO_KEEPALIVE, true);

    final Optional<EventLoopGroup> eventLoopOption = options.eventLoopGroup();
    if (eventLoopOption.isPresent()) {
        eventLoopGroup = eventLoopOption.get();
        closeEventLoopGroup = false;/*from   w  ww.j  ava2  s .c  om*/
    } else {
        eventLoopGroup = createGroup(threadFactoryFactory);
        closeEventLoopGroup = true;
    }

    final EnumMap<SessionProtocol, RemoteInvoker> remoteInvokers = new EnumMap<>(SessionProtocol.class);
    final HttpRemoteInvoker remoteInvoker = new HttpRemoteInvoker(baseBootstrap, options);

    SessionProtocol.ofHttp().forEach(protocol -> remoteInvokers.put(protocol, remoteInvoker));

    this.remoteInvokers = Collections.unmodifiableMap(remoteInvokers);
}

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From source file:io.vertx.core.impl.resolver.DnsResolverProvider.java

License:Open Source License

public DnsResolverProvider(VertxImpl vertx, AddressResolverOptions options) {
    List<String> dnsServers = options.getServers();
    List<InetSocketAddress> serverList = new ArrayList<>();
    if (dnsServers != null && dnsServers.size() > 0) {
        for (String dnsServer : dnsServers) {
            int sep = dnsServer.indexOf(':');
            String ipAddress;//from w  w w.ja v a 2 s.  c  o m
            int port;
            if (sep != -1) {
                ipAddress = dnsServer.substring(0, sep);
                port = Integer.parseInt(dnsServer.substring(sep + 1));
            } else {
                ipAddress = dnsServer;
                port = 53;
            }
            try {
                serverList.add(new InetSocketAddress(
                        InetAddress.getByAddress(NetUtil.createByteArrayFromIpAddressString(ipAddress)), port));
            } catch (UnknownHostException e) {
                throw new VertxException(e);
            }
        }
    } else {
        DnsServerAddressStream stream = DnsServerAddresses.defaultAddresses().stream();
        Set<InetSocketAddress> all = new HashSet<>();
        while (true) {
            InetSocketAddress address = stream.next();
            if (all.contains(address)) {
                break;
            }
            serverList.add(address);
            all.add(address);
        }
    }
    DnsServerAddresses nameServerAddresses = options.isRotateServers()
            ? DnsServerAddresses.rotational(serverList)
            : DnsServerAddresses.sequential(serverList);

    Map<String, InetAddress> entries;
    if (options.getHostsPath() != null) {
        File file = vertx.resolveFile(options.getHostsPath()).getAbsoluteFile();
        try {
            if (!file.exists() || !file.isFile()) {
                throw new IOException();
            }
            entries = HostsFileParser.parse(file);
        } catch (IOException e) {
            throw new VertxException("Cannot read hosts file " + file.getAbsolutePath());
        }
    } else if (options.getHostsValue() != null) {
        try {
            entries = HostsFileParser.parse(new StringReader(options.getHostsValue().toString()));
        } catch (IOException e) {
            throw new VertxException("Cannot read hosts config ", e);
        }
    } else {
        entries = HostsFileParser.parseSilently();
    }

    this.vertx = vertx;
    this.resolverGroup = new AddressResolverGroup<InetSocketAddress>() {

        @Override
        protected io.netty.resolver.AddressResolver<InetSocketAddress> newResolver(EventExecutor executor)
                throws Exception {

            DnsAddressResolverGroup group = new DnsAddressResolverGroup(NioDatagramChannel.class,
                    nameServerAddresses) {
                @Override
                protected NameResolver<InetAddress> newNameResolver(EventLoop eventLoop,
                        ChannelFactory<? extends DatagramChannel> channelFactory,
                        DnsServerAddresses nameServerAddresses) throws Exception {
                    DnsNameResolverBuilder builder = new DnsNameResolverBuilder((EventLoop) executor);
                    builder.hostsFileEntriesResolver(inetHost -> {
                        InetAddress addr = entries.get(inetHost);
                        if (addr == null) {
                            addr = entries.get(inetHost.toLowerCase(Locale.ENGLISH));
                        }
                        return addr;
                    });
                    builder.channelType(NioDatagramChannel.class);
                    builder.nameServerAddresses(nameServerAddresses);
                    builder.optResourceEnabled(options.isOptResourceEnabled());
                    builder.ttl(options.getCacheMinTimeToLive(), options.getCacheMaxTimeToLive());
                    builder.negativeTtl(options.getCacheNegativeTimeToLive());
                    builder.queryTimeoutMillis(options.getQueryTimeout());
                    builder.maxQueriesPerResolve(options.getMaxQueries());
                    builder.recursionDesired(options.getRdFlag());
                    if (options.getSearchDomains() != null) {
                        builder.searchDomains(options.getSearchDomains());
                        int ndots = options.getNdots();
                        if (ndots == -1) {
                            ndots = AddressResolver.DEFAULT_NDOTS_RESOLV_OPTION;
                        }
                        builder.ndots(ndots);
                    }
                    return builder.build();
                }
            };

            io.netty.resolver.AddressResolver<InetSocketAddress> resolver = group.getResolver(executor);
            resolvers.add(new ResolverRegistration(resolver, (EventLoop) executor));

            return resolver;
        }
    };
}

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From source file:org.redisson.connection.DnsAddressResolverGroupFactory.java

License:Apache License

@Override
public DnsAddressResolverGroup create(Class<? extends DatagramChannel> channelType,
        DnsServerAddressStreamProvider nameServerProvider) {
    return new DnsAddressResolverGroup(channelType, nameServerProvider);
}

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