| /* |
| * Copyright 2016 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.idea.blaze.base.run.processhandler; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.idea.blaze.base.command.BlazeCommand; |
| import com.google.idea.blaze.base.model.primitives.WorkspaceRoot; |
| import com.google.idea.blaze.base.scope.BlazeContext; |
| import com.intellij.execution.ExecutionException; |
| import com.intellij.execution.configurations.GeneralCommandLine; |
| import com.intellij.execution.process.*; |
| import com.intellij.openapi.util.Key; |
| |
| /** |
| * Scoped process handler. |
| * |
| * A context is created during construction and is ended when the process is terminated. |
| */ |
| public final class ScopedBlazeProcessHandler extends KillableColoredProcessHandler { |
| /** |
| * Methods to give the caller of {@link ScopedBlazeProcessHandler} hooks after the context is created. |
| */ |
| public interface ScopedProcessHandlerDelegate { |
| /** |
| * This method is called when the process starts. Any context setup (like pushing scopes on the context) should be done here. |
| */ |
| void onBlazeContextStart(BlazeContext context); |
| |
| /** |
| * Get a list of process listeners to add to the process. |
| */ |
| ImmutableList<ProcessListener> createProcessListeners(BlazeContext context); |
| |
| } |
| |
| private final ScopedProcessHandlerDelegate scopedProcessHandlerDelegate; |
| private final BlazeContext context; |
| |
| /** |
| * Construct a process handler and a context to be used for the life of the process. |
| * |
| * @param blazeCommand the blaze command to run |
| * @param workspaceRoot workspace root |
| * @param scopedProcessHandlerDelegate delegate methods that will be run with the process's context. |
| * @throws ExecutionException |
| */ |
| public ScopedBlazeProcessHandler( |
| BlazeCommand blazeCommand, |
| WorkspaceRoot workspaceRoot, |
| ScopedProcessHandlerDelegate scopedProcessHandlerDelegate) throws ExecutionException { |
| super(new GeneralCommandLine(blazeCommand.toList()).withWorkDirectory(workspaceRoot.directory().getPath())); |
| |
| this.scopedProcessHandlerDelegate = scopedProcessHandlerDelegate; |
| this.context = new BlazeContext(); |
| // The context is released in the ScopedProcessHandlerListener. |
| this.context.hold(); |
| |
| for (ProcessListener processListener : scopedProcessHandlerDelegate.createProcessListeners(context)) { |
| addProcessListener(processListener); |
| } |
| addProcessListener(new ScopedProcessHandlerListener()); |
| } |
| |
| @Override |
| public void coloredTextAvailable(String text, Key attributes) { |
| // Change blaze's stderr output to normal color, otherwise |
| // test output looks red |
| if (attributes == ProcessOutputTypes.STDERR) { |
| attributes = ProcessOutputTypes.STDOUT; |
| } |
| |
| super.coloredTextAvailable(text, attributes); |
| } |
| |
| /** |
| * Handle the {@link BlazeContext} held in a {@link ScopedBlazeProcessHandler}. This class will take care of calling methods when the |
| * process starts and freeing the context when the process terminates. |
| */ |
| private class ScopedProcessHandlerListener extends ProcessAdapter { |
| |
| @Override |
| public void startNotified(ProcessEvent event) { |
| scopedProcessHandlerDelegate.onBlazeContextStart(context); |
| } |
| |
| @Override |
| public void processWillTerminate(ProcessEvent event, boolean willBeDestroyed) { |
| context.release(); |
| } |
| } |
| } |