| // Copyright 2017 The Bazel Authors. All rights reserved. |
| // |
| // Licensed 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 com.google.devtools.build.lib.remote.blobstore; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.io.ByteStreams; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.SettableFuture; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.ExecutionException; |
| |
| /** A {@link SimpleBlobStore} implementation using a {@link ConcurrentMap}. */ |
| public final class ConcurrentMapBlobStore implements SimpleBlobStore { |
| private final ConcurrentMap<String, byte[]> map; |
| static final String ACTION_KEY_PREFIX = "ac_"; |
| |
| public ConcurrentMapBlobStore(ConcurrentMap<String, byte[]> map) { |
| this.map = map; |
| } |
| |
| @Override |
| public boolean containsKey(String key) { |
| return map.containsKey(key); |
| } |
| |
| @Override |
| public ListenableFuture<Boolean> get(String key, OutputStream out) { |
| byte[] data = map.get(key); |
| SettableFuture<Boolean> f = SettableFuture.create(); |
| if (data == null) { |
| f.set(false); |
| } else { |
| try { |
| out.write(data); |
| f.set(true); |
| } catch (IOException e) { |
| f.setException(e); |
| } |
| } |
| return f; |
| } |
| |
| @Override |
| public boolean getActionResult(String key, OutputStream out) |
| throws IOException, InterruptedException { |
| return getFromFuture(get(ACTION_KEY_PREFIX + key, out)); |
| } |
| |
| @Override |
| public void put(String key, long length, InputStream in) throws IOException { |
| byte[] value = ByteStreams.toByteArray(in); |
| Preconditions.checkState(value.length == length); |
| map.put(key, value); |
| } |
| |
| @Override |
| public void putActionResult(String key, byte[] in) { |
| map.put(ACTION_KEY_PREFIX + key, in); |
| } |
| |
| @Override |
| public void close() {} |
| |
| private static <T> T getFromFuture(ListenableFuture<T> f) |
| throws IOException, InterruptedException { |
| try { |
| return f.get(); |
| } catch (ExecutionException e) { |
| if (e.getCause() instanceof IOException) { |
| throw (IOException) e.getCause(); |
| } |
| throw new IOException(e.getCause()); |
| } |
| } |
| } |