| // 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.analysis.extra; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.devtools.build.lib.actions.Action; |
| import com.google.devtools.build.lib.actions.ActionExecutionContext; |
| import com.google.devtools.build.lib.actions.ActionKeyContext; |
| import com.google.devtools.build.lib.actions.ActionOwner; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.actions.CommandLineExpansionException; |
| import com.google.devtools.build.lib.actions.ExecException; |
| import com.google.devtools.build.lib.actions.UserExecException; |
| import com.google.devtools.build.lib.analysis.actions.AbstractFileWriteAction; |
| import com.google.devtools.build.lib.analysis.actions.ProtoDeterministicWriter; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.collect.nestedset.Order; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.util.Fingerprint; |
| |
| /** |
| * Requests extra action info from shadowed action and writes it, in protocol buffer format, to an |
| * .xa file for use by an extra action. This can only be done at execution time because actions may |
| * store information only known at execution time into the protocol buffer. |
| */ |
| @AutoCodec |
| @Immutable // if shadowedAction is immutable |
| public final class ExtraActionInfoFileWriteAction extends AbstractFileWriteAction { |
| private static final String UUID = "1759f81d-e72e-477d-b182-c4532bdbaeeb"; |
| |
| private final Action shadowedAction; |
| |
| ExtraActionInfoFileWriteAction(ActionOwner owner, Artifact primaryOutput, Action shadowedAction) { |
| super( |
| owner, |
| shadowedAction.discoversInputs() |
| ? NestedSetBuilder.<Artifact>stableOrder().addAll(shadowedAction.getOutputs()).build() |
| : NestedSetBuilder.<Artifact>emptySet(Order.STABLE_ORDER), |
| primaryOutput, |
| /*makeExecutable=*/ false); |
| |
| this.shadowedAction = Preconditions.checkNotNull(shadowedAction, primaryOutput); |
| } |
| |
| @Override |
| public DeterministicWriter newDeterministicWriter(ActionExecutionContext ctx) |
| throws ExecException { |
| try { |
| return new ProtoDeterministicWriter( |
| shadowedAction.getExtraActionInfo(ctx.getActionKeyContext()).build()); |
| } catch (CommandLineExpansionException e) { |
| throw new UserExecException(e); |
| } |
| } |
| |
| @Override |
| protected void computeKey(ActionKeyContext actionKeyContext, Fingerprint fp) |
| throws CommandLineExpansionException { |
| fp.addString(UUID); |
| fp.addString(shadowedAction.getKey(actionKeyContext)); |
| fp.addBytes(shadowedAction.getExtraActionInfo(actionKeyContext).build().toByteArray()); |
| } |
| } |