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// 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";
}
}
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