| // Copyright 2019 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.util; |
| |
| import build.bazel.remote.execution.v2.ActionResult; |
| import build.bazel.remote.execution.v2.Digest; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.io.ByteStreams; |
| import com.google.common.util.concurrent.Futures; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.devtools.build.lib.remote.common.CacheNotFoundException; |
| import com.google.devtools.build.lib.remote.common.RemoteCacheClient; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.protobuf.ByteString; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** A {@link RemoteCache} that stores its contents in memory. */ |
| public class InMemoryCacheClient implements RemoteCacheClient { |
| |
| private final ConcurrentMap<Digest, Exception> downloadFailures = new ConcurrentHashMap<>(); |
| private final ConcurrentMap<ActionKey, ActionResult> ac = new ConcurrentHashMap<>(); |
| private final ConcurrentMap<Digest, byte[]> cas; |
| |
| private AtomicInteger numSuccess = new AtomicInteger(); |
| private AtomicInteger numFailures = new AtomicInteger(); |
| |
| public InMemoryCacheClient(Map<Digest, byte[]> casEntries) { |
| this.cas = new ConcurrentHashMap<>(); |
| for (Map.Entry<Digest, byte[]> entry : casEntries.entrySet()) { |
| cas.put(entry.getKey(), entry.getValue()); |
| } |
| } |
| |
| public InMemoryCacheClient() { |
| this.cas = new ConcurrentHashMap<>(); |
| } |
| |
| public void addDownloadFailure(Digest digest, Exception e) { |
| downloadFailures.put(digest, e); |
| } |
| |
| public int getNumSuccessfulDownloads() { |
| return numSuccess.get(); |
| } |
| |
| public int getNumFailedDownloads() { |
| return numFailures.get(); |
| } |
| |
| @Override |
| public ListenableFuture<Void> downloadBlob(Digest digest, OutputStream out) { |
| Exception failure = downloadFailures.get(digest); |
| if (failure != null) { |
| numFailures.incrementAndGet(); |
| return Futures.immediateFailedFuture(failure); |
| } |
| |
| byte[] data = cas.get(digest); |
| if (data == null) { |
| return Futures.immediateFailedFuture(new CacheNotFoundException(digest)); |
| } |
| |
| try { |
| out.write(data); |
| out.flush(); |
| } catch (IOException e) { |
| numFailures.incrementAndGet(); |
| return Futures.immediateFailedFuture(e); |
| } |
| numSuccess.incrementAndGet(); |
| return Futures.immediateFuture(null); |
| } |
| |
| @Override |
| public ListenableFuture<ActionResult> downloadActionResult(ActionKey actionKey) { |
| ActionResult actionResult = ac.get(actionKey); |
| if (actionResult == null) { |
| return Futures.immediateFailedFuture(new CacheNotFoundException(actionKey.getDigest())); |
| } |
| return Futures.immediateFuture(actionResult); |
| } |
| |
| @Override |
| public void uploadActionResult(ActionKey actionKey, ActionResult actionResult) { |
| ac.put(actionKey, actionResult); |
| } |
| |
| @Override |
| public ListenableFuture<Void> uploadFile(Digest digest, Path file) { |
| try (InputStream in = file.getInputStream()) { |
| cas.put(digest, ByteStreams.toByteArray(in)); |
| } catch (IOException e) { |
| return Futures.immediateFailedFuture(e); |
| } |
| return Futures.immediateFuture(null); |
| } |
| |
| @Override |
| public ListenableFuture<Void> uploadBlob(Digest digest, ByteString data) { |
| try (InputStream in = data.newInput()) { |
| cas.put(digest, data.toByteArray()); |
| } catch (IOException e) { |
| return Futures.immediateFailedFuture(e); |
| } |
| return Futures.immediateFuture(null); |
| } |
| |
| @Override |
| public ListenableFuture<ImmutableSet<Digest>> findMissingDigests(Iterable<Digest> digests) { |
| ImmutableSet.Builder<Digest> missingBuilder = ImmutableSet.builder(); |
| for (Digest digest : digests) { |
| if (!cas.containsKey(digest)) { |
| missingBuilder.add(digest); |
| } |
| } |
| return Futures.immediateFuture(missingBuilder.build()); |
| } |
| |
| @Override |
| public void close() { |
| cas.clear(); |
| ac.clear(); |
| } |
| } |