com.github.horrorho.inflatabledonkey.chunk.engine.ChunkEngine.java Source code

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Here is the source code for com.github.horrorho.inflatabledonkey.chunk.engine.ChunkEngine.java

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/*
 * The MIT License
 *
 * Copyright 2016 Ahseya.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.github.horrorho.inflatabledonkey.chunk.engine;

import com.github.horrorho.inflatabledonkey.cloud.voodoo.StorageHostChunkListContainer;
import com.github.horrorho.inflatabledonkey.chunk.Chunk;
import com.github.horrorho.inflatabledonkey.protocol.ChunkServer;
import java.util.Collection;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import net.jcip.annotations.ThreadSafe;
import org.apache.http.client.HttpClient;

/**
 * ChunkEngine.
 *
 * @author Ahseya
 */
@ThreadSafe
public interface ChunkEngine {

    Map<ChunkServer.ChunkReference, Chunk> fetch(HttpClient httpClient,
            StorageHostChunkListContainer storageHostChunkListContainer,
            Function<ChunkServer.ChunkReference, Optional<byte[]>> getKeyEncryptionKey);

    default Map<ChunkServer.ChunkReference, Chunk> fetch(HttpClient httpClient,
            Set<StorageHostChunkListContainer> storageHostChunkListContainerList,
            Function<ChunkServer.ChunkReference, Optional<byte[]>> getKeyEncryptionKey) {

        return storageHostChunkListContainerList.stream()
                .map(storageHostChunkList -> fetch(httpClient, storageHostChunkList, getKeyEncryptionKey))
                .map(Map::entrySet).flatMap(Collection::stream)
                .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
    }
}