opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/io/InputOutputStreamFactory.java

   1 /*
   2  * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.io;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.io.ByteSource;
  14 import java.io.BufferedInputStream;
  15 import java.io.BufferedOutputStream;
  16 import java.io.File;
  17 import java.io.FileInputStream;
  18 import java.io.FileNotFoundException;
  19 import java.io.FileOutputStream;
  20 import java.io.IOException;
  21 import java.io.InputStream;
  22 import java.io.OutputStream;
  23 import net.jpountz.lz4.LZ4FrameOutputStream;
  24 import org.eclipse.jdt.annotation.NonNull;
  25
  26 @Beta
  27 public abstract class InputOutputStreamFactory {
  28     InputOutputStreamFactory() {
  29         // Hidden on purpose
  30     }
  31
  32     public static @NonNull InputOutputStreamFactory simple() {
  33         return PlainInputOutputStreamSupport.INSTANCE;
  34     }
  35
  36     public static @NonNull InputOutputStreamFactory lz4(final String blockSize) {
  37         return lz4(LZ4FrameOutputStream.BLOCKSIZE.valueOf("SIZE_" + blockSize));
  38     }
  39
  40     public static @NonNull InputOutputStreamFactory lz4(final LZ4FrameOutputStream.BLOCKSIZE blockSize) {
  41         return new LZ4InputOutputStreamSupport(requireNonNull(blockSize));
  42     }
  43
  44     public abstract @NonNull InputStream createInputStream(ByteSource input) throws IOException;
  45
  46     public abstract @NonNull InputStream createInputStream(File file) throws IOException;
  47
  48     public abstract @NonNull OutputStream createOutputStream(File file) throws IOException;
  49
  50     public abstract @NonNull OutputStream wrapOutputStream(OutputStream output) throws IOException;
  51
  52     static @NonNull BufferedInputStream defaultCreateInputStream(final File file) throws FileNotFoundException {
  53         return new BufferedInputStream(new FileInputStream(file));
  54     }
  55
  56     static @NonNull BufferedOutputStream defaultCreateOutputStream(final File file) throws FileNotFoundException {
  57         return new BufferedOutputStream(new FileOutputStream(file));
  58     }
  59 }