| // Copyright 2015 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.skyframe; |
| |
| import com.google.devtools.build.lib.cmdline.TargetParsingException; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.util.DetailedExitCode; |
| import com.google.devtools.build.skyframe.SkyFunction; |
| import com.google.devtools.build.skyframe.SkyFunctionException; |
| import com.google.devtools.build.skyframe.SkyFunctionException.Transience; |
| import com.google.devtools.build.skyframe.SkyFunctionName; |
| import com.google.devtools.build.skyframe.SkyKey; |
| import com.google.devtools.build.skyframe.SkyValue; |
| import javax.annotation.Nullable; |
| |
| /** |
| * SkyFunction that throws a {@link TargetParsingException} for target pattern that could not be |
| * parsed. Must only be requested when a SkyFunction wishes to ignore the errors in a target pattern |
| * in keep_going mode, but to shut down the build in nokeep_going mode. |
| * |
| * <p>This SkyFunction never returns a value, only throws a {@link TargetParsingException}, and |
| * should never return null, since all of its dependencies should already be present. |
| */ |
| public class TargetPatternErrorFunction implements SkyFunction { |
| public static Key key(TargetParsingException e) { |
| return Key.create(e.getMessage(), e.getDetailedExitCode()); |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec |
| static class Key implements SkyKey { |
| private static final SkyKeyInterner<Key> interner = SkyKey.newInterner(); |
| private final String message; |
| private final DetailedExitCode detailedExitCode; |
| |
| private Key(String message, DetailedExitCode detailedExitCode) { |
| this.message = message; |
| this.detailedExitCode = detailedExitCode; |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec.Instantiator |
| static Key create(String message, DetailedExitCode detailedExitCode) { |
| return interner.intern(new Key(message, detailedExitCode)); |
| } |
| |
| @Override |
| public SkyFunctionName functionName() { |
| return SkyFunctions.TARGET_PATTERN_ERROR; |
| } |
| |
| @Override |
| public int hashCode() { |
| return 43 * message.hashCode() + detailedExitCode.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof Key)) { |
| return false; |
| } |
| Key that = (Key) obj; |
| return this.message.equals(that.message) |
| && this.detailedExitCode.equals(that.detailedExitCode); |
| } |
| |
| @Override |
| public SkyKeyInterner<Key> getSkyKeyInterner() { |
| return interner; |
| } |
| } |
| |
| @Nullable |
| @Override |
| public SkyValue compute(SkyKey skyKey, Environment env) |
| throws TargetErrorFunctionException, InterruptedException { |
| throw new TargetErrorFunctionException( |
| new TargetParsingException(((Key) skyKey).message, ((Key) skyKey).detailedExitCode), |
| Transience.PERSISTENT); |
| } |
| |
| private static class TargetErrorFunctionException extends SkyFunctionException { |
| public TargetErrorFunctionException(TargetParsingException cause, Transience transience) { |
| super(cause, transience); |
| } |
| } |
| } |