| // Copyright 2022 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.testutil; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.actions.SpawnStrategy; |
| import com.google.devtools.build.lib.exec.SpawnStrategyRegistry; |
| import com.google.devtools.build.lib.runtime.BlazeModule; |
| import com.google.devtools.build.lib.runtime.CommandEnvironment; |
| import com.google.devtools.build.lib.util.AbruptExitException; |
| |
| /** |
| * A {@link BlazeModule} that uses {@link SpawnController} to inject custom behavior. |
| * |
| * <p>The identifiers of strategies to make controllable are passed to the constructor. These |
| * strategies are expected to already exist in the {@link SpawnStrategyRegistry.Builder} when {@link |
| * #registerSpawnStrategies} is called, so the modules responsible for registering them should be |
| * added to the runtime builder <em>before</em> the {@code ControllableActionStrategyModule}. Each |
| * strategy corresponding to a specified identifier is replaced in the {@link |
| * SpawnStrategyRegistry.Builder} with a {@linkplain SpawnController#wrap controllable wrapper}. |
| */ |
| public final class ControllableActionStrategyModule extends BlazeModule { |
| |
| private final SpawnController spawnController; |
| private final ImmutableList<String> identifiers; |
| |
| public ControllableActionStrategyModule(SpawnController spawnController, String... identifiers) { |
| checkArgument(identifiers.length > 0, "No identifiers given"); |
| this.spawnController = checkNotNull(spawnController); |
| this.identifiers = ImmutableList.copyOf(identifiers); |
| } |
| |
| @Override |
| public void registerSpawnStrategies( |
| SpawnStrategyRegistry.Builder registryBuilder, CommandEnvironment env) |
| throws AbruptExitException { |
| for (String identifier : identifiers) { |
| SpawnStrategy delegate = registryBuilder.toStrategy(identifier, getClass().getSimpleName()); |
| registryBuilder.registerStrategy(spawnController.wrap(delegate), identifier); |
| } |
| } |
| } |