Example usage for io.netty.resolver.dns DnsServerAddresses sequential

Introduction

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

Prototype

public static DnsServerAddresses sequential(InetSocketAddress... addresses) 

Source Link

Document

Returns the DnsServerAddresses that yields the specified addresses sequentially.

Usage

From source file:com.linecorp.armeria.client.endpoint.dns.DnsEndpointGroupBuilder.java

License:Apache License

/**
 * Sets the DNS server addresses to send queries to. Operating system default is used by default.
 *///from   w  ww . ja  v  a 2s  . c  o m
public final B serverAddresses(Iterable<InetSocketAddress> serverAddresses) {
    requireNonNull(serverAddresses, "serverAddresses");
    final DnsServerAddresses addrs = DnsServerAddresses.sequential(serverAddresses);
    serverAddressStreamProvider = hostname -> addrs.stream();
    return self();
}

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From source file:io.vertx.core.dns.impl.netty.UnixResolverDnsServerAddressStreamProvider.java

License:Apache License

private static void putIfAbsent(Map<String, DnsServerAddresses> domainToNameServerStreamMap, String domainName,
        List<InetSocketAddress> addresses) {
    // TODO(scott): sortlist is being ignored.
    putIfAbsent(domainToNameServerStreamMap, domainName, DnsServerAddresses.sequential(addresses));
}

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From source file:io.vertx.core.impl.HostnameResolver.java

License:Open Source License

public HostnameResolver(VertxImpl vertx, HostnameResolverOptions options) {
    DnsNameResolverBuilder builder = new DnsNameResolverBuilder(vertx.createEventLoopContext(null, null,
            new JsonObject(), Thread.currentThread().getContextClassLoader()).nettyEventLoop());
    builder.channelFactory(NioDatagramChannel::new);
    if (options != null) {
        List<String> dnsServers = options.getServers();
        if (dnsServers != null && dnsServers.size() > 0) {
            List<InetSocketAddress> serverList = new ArrayList<>();
            for (String dnsServer : dnsServers) {
                int sep = dnsServer.indexOf(':');
                String ipAddress;
                int port;
                if (sep != -1) {
                    ipAddress = dnsServer.substring(0, sep);
                    port = Integer.parseInt(dnsServer.substring(sep + 1));
                } else {
                    ipAddress = dnsServer;
                    port = 53;//from   w ww.j a  v  a2 s. c  o m
                }
                try {
                    serverList.add(new InetSocketAddress(
                            InetAddress.getByAddress(NetUtil.createByteArrayFromIpAddressString(ipAddress)),
                            port));
                } catch (UnknownHostException e) {
                    throw new VertxException(e);
                }
            }
            DnsServerAddresses nameServerAddresses = DnsServerAddresses.sequential(serverList);
            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());
    }
    this.resolver = builder.build();
    this.vertx = vertx;
}

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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  www .  ja v  a2 s  . c om*/
            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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