Removed dead code
This commit is contained in:
nathan
parent
658d8e96b5
commit
7921c748ca
|
|
@ -1,406 +0,0 @@
|
|||
/*
|
||||
* Copyright 2015 The Netty Project
|
||||
*
|
||||
* The Netty Project licenses this file to you under the Apache License,
|
||||
* version 2.0 (the "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at:
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*/
|
||||
package dorkbox.network.dns.resolver;
|
||||
|
||||
import static io.netty.util.internal.ObjectUtil.checkNotNull;
|
||||
import static io.netty.util.internal.ObjectUtil.intValue;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
import dorkbox.network.dns.resolver.addressProvider.DnsServerAddressStreamProvider;
|
||||
import dorkbox.network.dns.resolver.addressProvider.DnsServerAddressStreamProviders;
|
||||
import dorkbox.network.dns.resolver.cache.DefaultDnsCache;
|
||||
import dorkbox.network.dns.resolver.cache.DnsCache;
|
||||
import io.netty.channel.ChannelFactory;
|
||||
import io.netty.channel.EventLoop;
|
||||
import io.netty.channel.ReflectiveChannelFactory;
|
||||
import io.netty.channel.socket.DatagramChannel;
|
||||
import io.netty.channel.socket.InternetProtocolFamily;
|
||||
import io.netty.resolver.HostsFileEntriesResolver;
|
||||
import io.netty.resolver.ResolvedAddressTypes;
|
||||
import io.netty.util.internal.UnstableApi;
|
||||
|
||||
/**
|
||||
* A {@link DnsNameResolver} builder.
|
||||
*/
|
||||
@UnstableApi
|
||||
public final
|
||||
class DnsNameResolverBuilder {
|
||||
private final EventLoop eventLoop;
|
||||
private ChannelFactory<? extends DatagramChannel> channelFactory;
|
||||
private DnsCache resolveCache;
|
||||
private DnsCache authoritativeDnsServerCache;
|
||||
private Integer minTtl;
|
||||
private Integer maxTtl;
|
||||
private Integer negativeTtl;
|
||||
private long queryTimeoutMillis = 5000;
|
||||
private ResolvedAddressTypes resolvedAddressTypes = DnsNameResolver.DEFAULT_RESOLVE_ADDRESS_TYPES;
|
||||
private boolean recursionDesired = true;
|
||||
private int maxQueriesPerResolve = 16;
|
||||
private boolean traceEnabled;
|
||||
private int maxPayloadSize = 4096;
|
||||
private HostsFileEntriesResolver hostsFileEntriesResolver = HostsFileEntriesResolver.DEFAULT;
|
||||
private DnsServerAddressStreamProvider dnsServerAddressStreamProvider = DnsServerAddressStreamProviders.platformDefault();
|
||||
private DnsQueryLifecycleObserverFactory dnsQueryLifecycleObserverFactory = NoopDnsQueryLifecycleObserverFactory.INSTANCE;
|
||||
private String[] searchDomains;
|
||||
private int ndots = -1;
|
||||
private boolean decodeIdn = true;
|
||||
|
||||
/**
|
||||
* Creates a new builder.
|
||||
*
|
||||
* @param eventLoop the {@link EventLoop} the {@link EventLoop} which will perform the communication with the DNS
|
||||
* servers.
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder(EventLoop eventLoop) {
|
||||
this.eventLoop = eventLoop;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the {@link ChannelFactory} as a {@link ReflectiveChannelFactory} of this type.
|
||||
* Use as an alternative to {@link #channelFactory(ChannelFactory)}.
|
||||
*
|
||||
* @param channelType the type
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder channelType(Class<? extends DatagramChannel> channelType) {
|
||||
return channelFactory(new ReflectiveChannelFactory<DatagramChannel>(channelType));
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the {@link ChannelFactory} that will create a {@link DatagramChannel}.
|
||||
*
|
||||
* @param channelFactory the {@link ChannelFactory}
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder channelFactory(ChannelFactory<? extends DatagramChannel> channelFactory) {
|
||||
this.channelFactory = channelFactory;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the cache for resolution results.
|
||||
*
|
||||
* @param resolveCache the DNS resolution results cache
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder resolveCache(DnsCache resolveCache) {
|
||||
this.resolveCache = resolveCache;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the factory used to generate objects which can observe individual DNS queries.
|
||||
*
|
||||
* @param lifecycleObserverFactory the factory used to generate objects which can observe individual DNS queries.
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder dnsQueryLifecycleObserverFactory(DnsQueryLifecycleObserverFactory lifecycleObserverFactory) {
|
||||
this.dnsQueryLifecycleObserverFactory = checkNotNull(lifecycleObserverFactory, "lifecycleObserverFactory");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the cache for authoritative NS servers
|
||||
*
|
||||
* @param authoritativeDnsServerCache the authoritative NS servers cache
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder authoritativeDnsServerCache(DnsCache authoritativeDnsServerCache) {
|
||||
this.authoritativeDnsServerCache = authoritativeDnsServerCache;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the minimum and maximum TTL of the cached DNS resource records (in seconds). If the TTL of the DNS
|
||||
* resource record returned by the DNS server is less than the minimum TTL or greater than the maximum TTL,
|
||||
* this resolver will ignore the TTL from the DNS server and use the minimum TTL or the maximum TTL instead
|
||||
* respectively.
|
||||
* The default value is {@code 0} and {@link Integer#MAX_VALUE}, which practically tells this resolver to
|
||||
* respect the TTL from the DNS server.
|
||||
*
|
||||
* @param minTtl the minimum TTL
|
||||
* @param maxTtl the maximum TTL
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder ttl(int minTtl, int maxTtl) {
|
||||
this.maxTtl = maxTtl;
|
||||
this.minTtl = minTtl;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the TTL of the cache for the failed DNS queries (in seconds).
|
||||
*
|
||||
* @param negativeTtl the TTL for failed cached queries
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder negativeTtl(int negativeTtl) {
|
||||
this.negativeTtl = negativeTtl;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the timeout of each DNS query performed by this resolver (in milliseconds).
|
||||
*
|
||||
* @param queryTimeoutMillis the query timeout
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder queryTimeoutMillis(long queryTimeoutMillis) {
|
||||
this.queryTimeoutMillis = queryTimeoutMillis;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compute a {@link ResolvedAddressTypes} from some {@link InternetProtocolFamily}s.
|
||||
* An empty input will return the default value, based on "java.net" System properties.
|
||||
* Valid inputs are (), (IPv4), (IPv6), (Ipv4, IPv6) and (IPv6, IPv4).
|
||||
*
|
||||
* @param internetProtocolFamilies a valid sequence of {@link InternetProtocolFamily}s
|
||||
*
|
||||
* @return a {@link ResolvedAddressTypes}
|
||||
*/
|
||||
public static
|
||||
ResolvedAddressTypes computeResolvedAddressTypes(InternetProtocolFamily... internetProtocolFamilies) {
|
||||
if (internetProtocolFamilies == null || internetProtocolFamilies.length == 0) {
|
||||
return DnsNameResolver.DEFAULT_RESOLVE_ADDRESS_TYPES;
|
||||
}
|
||||
if (internetProtocolFamilies.length > 2) {
|
||||
throw new IllegalArgumentException("No more than 2 InternetProtocolFamilies");
|
||||
}
|
||||
|
||||
switch (internetProtocolFamilies[0]) {
|
||||
case IPv4:
|
||||
return (internetProtocolFamilies.length >= 2 && internetProtocolFamilies[1] == InternetProtocolFamily.IPv6)
|
||||
? ResolvedAddressTypes.IPV4_PREFERRED
|
||||
: ResolvedAddressTypes.IPV4_ONLY;
|
||||
case IPv6:
|
||||
return (internetProtocolFamilies.length >= 2 && internetProtocolFamilies[1] == InternetProtocolFamily.IPv4)
|
||||
? ResolvedAddressTypes.IPV6_PREFERRED
|
||||
: ResolvedAddressTypes.IPV6_ONLY;
|
||||
default:
|
||||
throw new IllegalArgumentException("Couldn't resolve ResolvedAddressTypes from InternetProtocolFamily array");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the list of the protocol families of the address resolved.
|
||||
* You can use {@link DnsNameResolverBuilder#computeResolvedAddressTypes(InternetProtocolFamily...)}
|
||||
* to get a {@link ResolvedAddressTypes} out of some {@link InternetProtocolFamily}s.
|
||||
*
|
||||
* @param resolvedAddressTypes the address types
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder resolvedAddressTypes(ResolvedAddressTypes resolvedAddressTypes) {
|
||||
this.resolvedAddressTypes = resolvedAddressTypes;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets if this resolver has to send a DNS query with the RD (recursion desired) flag set.
|
||||
*
|
||||
* @param recursionDesired true if recursion is desired
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder recursionDesired(boolean recursionDesired) {
|
||||
this.recursionDesired = recursionDesired;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the maximum allowed number of DNS queries to send when resolving a host name.
|
||||
*
|
||||
* @param maxQueriesPerResolve the max number of queries
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder maxQueriesPerResolve(int maxQueriesPerResolve) {
|
||||
this.maxQueriesPerResolve = maxQueriesPerResolve;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets if this resolver should generate the detailed trace information in an exception message so that
|
||||
* it is easier to understand the cause of resolution failure.
|
||||
*
|
||||
* @param traceEnabled true if trace is enabled
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder traceEnabled(boolean traceEnabled) {
|
||||
this.traceEnabled = traceEnabled;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the capacity of the datagram packet buffer (in bytes). The default value is {@code 4096} bytes.
|
||||
*
|
||||
* @param maxPayloadSize the capacity of the datagram packet buffer
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder maxPayloadSize(int maxPayloadSize) {
|
||||
this.maxPayloadSize = maxPayloadSize;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param hostsFileEntriesResolver the {@link HostsFileEntriesResolver} used to first check
|
||||
* if the hostname is locally aliased.
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder hostsFileEntriesResolver(HostsFileEntriesResolver hostsFileEntriesResolver) {
|
||||
this.hostsFileEntriesResolver = hostsFileEntriesResolver;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the {@link DnsServerAddressStreamProvider} which is used to determine which DNS server is used to resolve
|
||||
* each hostname.
|
||||
*
|
||||
* @return {@code this}.
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder nameServerProvider(DnsServerAddressStreamProvider dnsServerAddressStreamProvider) {
|
||||
this.dnsServerAddressStreamProvider = checkNotNull(dnsServerAddressStreamProvider, "dnsServerAddressStreamProvider");
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the list of search domains of the resolver.
|
||||
*
|
||||
* @param searchDomains the search domains
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder searchDomains(Iterable<String> searchDomains) {
|
||||
checkNotNull(searchDomains, "searchDomains");
|
||||
|
||||
final List<String> list = new ArrayList<String>(4);
|
||||
|
||||
for (String f : searchDomains) {
|
||||
if (f == null) {
|
||||
break;
|
||||
}
|
||||
|
||||
// Avoid duplicate entries.
|
||||
if (list.contains(f)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
list.add(f);
|
||||
}
|
||||
|
||||
this.searchDomains = list.toArray(new String[list.size()]);
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the number of dots which must appear in a name before an initial absolute query is made.
|
||||
* The default value is {@code 1}.
|
||||
*
|
||||
* @param ndots the ndots value
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder ndots(int ndots) {
|
||||
this.ndots = ndots;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set if domain / host names should be decoded to unicode when received.
|
||||
* See <a href="https://tools.ietf.org/html/rfc3492">rfc3492</a>.
|
||||
*
|
||||
* @param decodeIdn if should get decoded
|
||||
*
|
||||
* @return {@code this}
|
||||
*/
|
||||
public
|
||||
DnsNameResolverBuilder decodeIdn(boolean decodeIdn) {
|
||||
this.decodeIdn = decodeIdn;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a new {@link DnsNameResolver} instance.
|
||||
*
|
||||
* @return a {@link DnsNameResolver}
|
||||
*/
|
||||
public
|
||||
DnsNameResolver build() {
|
||||
if (resolveCache != null && (minTtl != null || maxTtl != null || negativeTtl != null)) {
|
||||
throw new IllegalStateException("resolveCache and TTLs are mutually exclusive");
|
||||
}
|
||||
|
||||
if (authoritativeDnsServerCache != null && (minTtl != null || maxTtl != null || negativeTtl != null)) {
|
||||
throw new IllegalStateException("authoritativeDnsServerCache and TTLs are mutually exclusive");
|
||||
}
|
||||
|
||||
DnsCache resolveCache = this.resolveCache != null ? this.resolveCache : newCache();
|
||||
DnsCache authoritativeDnsServerCache = this.authoritativeDnsServerCache != null ? this.authoritativeDnsServerCache : newCache();
|
||||
return new DnsNameResolver(eventLoop,
|
||||
channelFactory,
|
||||
resolveCache,
|
||||
authoritativeDnsServerCache,
|
||||
dnsQueryLifecycleObserverFactory,
|
||||
queryTimeoutMillis,
|
||||
resolvedAddressTypes,
|
||||
recursionDesired,
|
||||
maxQueriesPerResolve,
|
||||
traceEnabled,
|
||||
maxPayloadSize,
|
||||
hostsFileEntriesResolver,
|
||||
dnsServerAddressStreamProvider,
|
||||
searchDomains,
|
||||
ndots,
|
||||
decodeIdn);
|
||||
}
|
||||
|
||||
private
|
||||
DnsCache newCache() {
|
||||
return new DefaultDnsCache(intValue(minTtl, 0), intValue(maxTtl, Integer.MAX_VALUE), intValue(negativeTtl, 0));
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user