83 lines
2.7 KiB
Java
83 lines
2.7 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.extension.streaming.util;
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import android.content.Context;
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import android.util.Log;
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import com.squareup.okhttp.internal.Network;
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import org.mariotaku.twidere.Twidere;
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import org.mariotaku.twidere.extension.streaming.BuildConfig;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.util.Arrays;
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import java.util.LinkedHashMap;
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public class TwidereHostAddressResolver implements Network {
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private static final String RESOLVER_LOGTAG = "Twidere.Streaming.Host";
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private static TwidereHostAddressResolver sInstance;
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private final HostCache mHostCache = new HostCache(512);
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private final Context mContext;
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public TwidereHostAddressResolver(final Context context) {
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mContext = context;
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}
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@Override
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public InetAddress[] resolveInetAddresses(final String host) throws UnknownHostException {
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if (host == null) return null;
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// First, I'll try to load address cached.
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final InetAddress[] cached = mHostCache.get(host);
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if (cached != null) {
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if (BuildConfig.DEBUG) {
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Log.d(RESOLVER_LOGTAG, "Got cached " + Arrays.toString(cached));
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}
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return cached;
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}
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final InetAddress[] resolved = Twidere.resolveHost(mContext, host);
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mHostCache.put(host, resolved);
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return resolved;
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}
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public static Network getInstance(final Context context) {
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if (sInstance != null) return sInstance;
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return sInstance = new TwidereHostAddressResolver(context);
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}
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private static class HostCache extends LinkedHashMap<String, InetAddress[]> {
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private static final long serialVersionUID = -9216545511009449147L;
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HostCache(final int initialCapacity) {
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super(initialCapacity);
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}
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@Override
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public InetAddress[] put(final String key, final InetAddress[] value) {
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if (value == null) return null;
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return super.put(key, value);
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}
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}
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}
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