| // Copyright 2014 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.actions; |
| |
| import com.google.common.collect.Iterables; |
| import com.google.devtools.build.lib.actions.ActionExecutionContext; |
| import com.google.devtools.build.lib.actions.ActionExecutionException; |
| import com.google.devtools.build.lib.actions.ActionOwner; |
| import com.google.devtools.build.lib.actions.ActionResult; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.vfs.Path; |
| import java.io.IOException; |
| |
| /** |
| * Action to create an executable symbolic link. It includes additional validation that symlink |
| * target is indeed an executable file. |
| */ |
| @AutoCodec |
| public final class ExecutableSymlinkAction extends SymlinkAction { |
| |
| @AutoCodec.Instantiator |
| public ExecutableSymlinkAction(ActionOwner owner, Artifact primaryInput, Artifact primaryOutput) { |
| super(owner, primaryInput, primaryOutput, "Symlinking " + owner.getLabel()); |
| } |
| |
| @Override |
| public ActionResult execute(ActionExecutionContext actionExecutionContext) |
| throws ActionExecutionException { |
| Path inputPath = actionExecutionContext.getInputPath(getPrimaryInput()); |
| try { |
| // Validate that input path is a file with the executable bit is set. |
| if (!inputPath.isFile()) { |
| throw new ActionExecutionException( |
| "'" + Iterables.getOnlyElement(getInputs()).prettyPrint() + "' is not a file", this, |
| false); |
| } |
| if (!inputPath.isExecutable()) { |
| throw new ActionExecutionException("failed to create symbolic link '" |
| + Iterables.getOnlyElement(getOutputs()).prettyPrint() |
| + "': file '" + Iterables.getOnlyElement(getInputs()).prettyPrint() |
| + "' is not executable", this, false); |
| } |
| } catch (IOException e) { |
| throw new ActionExecutionException("failed to create symbolic link '" |
| + Iterables.getOnlyElement(getOutputs()).prettyPrint() |
| + "' to the '" + Iterables.getOnlyElement(getInputs()).prettyPrint() |
| + "' due to I/O error: " + e.getMessage(), e, this, false); |
| } |
| |
| return super.execute(actionExecutionContext); |
| } |
| |
| @Override |
| public String getMnemonic() { |
| return "ExecutableSymlink"; |
| } |
| } |