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// Copyright 2014 Google Inc. 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.actions;
/**
* Methods needed by {@code SkyframeBuilder}.
*/
public final class BuilderUtils {
private BuilderUtils() {}
/**
* Figure out why an action's execution failed and rethrow the right kind of exception.
*/
public static void rethrow(Throwable cause) throws BuildFailedException, TestExecException {
Throwable innerCause = cause.getCause();
if (innerCause instanceof TestExecException) {
throw (TestExecException) innerCause;
}
if (cause instanceof ActionExecutionException) {
ActionExecutionException actionExecutionCause = (ActionExecutionException) cause;
// Sometimes ActionExecutionExceptions are caused by Actions with no owner.
String message =
(actionExecutionCause.getLocation() != null) ?
(actionExecutionCause.getLocation().print() + " " + cause.getMessage()) :
cause.getMessage();
throw new BuildFailedException(message, actionExecutionCause.isCatastrophe(),
actionExecutionCause.getAction(), actionExecutionCause.getRootCauses(),
/*errorAlreadyShown=*/ !actionExecutionCause.showError());
} else if (cause instanceof MissingInputFileException) {
throw new BuildFailedException(cause.getMessage());
} else if (cause instanceof RuntimeException) {
throw (RuntimeException) cause;
} else if (cause instanceof Error) {
throw (Error) cause;
} else {
// We encountered an exception we don't think we should have encountered. This can indicate
// a bug in our code, such as lower level exceptions not being properly handled, or in our
// expectations in this method.
throw new IllegalArgumentException("action terminated with "
+ "unexpected exception: " + cause.getMessage(), cause);
}
}
}
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