| // 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.common.collect.Interner; |
| import com.google.devtools.build.lib.cmdline.TargetParsingException; |
| import com.google.devtools.build.lib.concurrent.BlazeInterners; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.skyframe.AbstractSkyKey; |
| 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 { |
| // We pass in the error message, which isn't ideal. We could consider reparsing the original |
| // pattern instead, but that requires more information. |
| public static Key key(String errorMessage) { |
| return Key.create(errorMessage); |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec |
| static class Key extends AbstractSkyKey<String> { |
| private static final Interner<Key> interner = BlazeInterners.newWeakInterner(); |
| |
| private Key(String arg) { |
| super(arg); |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec.Instantiator |
| static Key create(String arg) { |
| return interner.intern(new Key(arg)); |
| } |
| |
| @Override |
| public SkyFunctionName functionName() { |
| return SkyFunctions.TARGET_PATTERN_ERROR; |
| } |
| } |
| |
| @Nullable |
| @Override |
| public SkyValue compute(SkyKey skyKey, Environment env) |
| throws TargetErrorFunctionException, InterruptedException { |
| String errorMessage = (String) skyKey.argument(); |
| throw new TargetErrorFunctionException( |
| new TargetParsingException(errorMessage), Transience.PERSISTENT); |
| } |
| |
| @Nullable |
| @Override |
| public String extractTag(SkyKey skyKey) { |
| return null; |
| } |
| |
| private static class TargetErrorFunctionException extends SkyFunctionException { |
| public TargetErrorFunctionException( |
| TargetParsingException cause, Transience transience) { |
| super(cause, transience); |
| } |
| } |
| } |