| // 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.rules.java; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.devtools.build.lib.actions.ActionContext; |
| import com.google.devtools.build.lib.actions.ActionExecutionContext; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.view.proto.Deps; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UncheckedIOException; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** Context for compiling Java files. */ |
| public class JavaCompileActionContext implements ActionContext { |
| private final ConcurrentHashMap<Artifact, Deps.Dependencies> cache = new ConcurrentHashMap<>(); |
| |
| Deps.Dependencies getDependencies( |
| Artifact jdepsFile, ActionExecutionContext actionExecutionContext) throws IOException { |
| // TODO(djasper): Investigate caching across builds. |
| try { |
| return cache.computeIfAbsent( |
| jdepsFile, |
| file -> { |
| try (InputStream input = actionExecutionContext.getInputPath(file).getInputStream()) { |
| return Deps.Dependencies.parseFrom(input); |
| } catch (IOException e) { |
| throw new UncheckedIOException(e); |
| } |
| }); |
| } catch (UncheckedIOException e) { |
| throw e.getCause(); |
| } |
| } |
| |
| @VisibleForTesting |
| void insertDependencies(Artifact jdepsFile, Deps.Dependencies dependencies) { |
| cache.put(jdepsFile, dependencies); |
| } |
| } |