org.apache.bookkeeper.common.util.ExceptionUtils Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.bookkeeper.common.util;
import java.io.IOException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.concurrent.ExecutionException;
import org.apache.bookkeeper.common.concurrent.FutureUtils;
import org.apache.bookkeeper.common.exceptions.ObjectClosedException;
/**
* Utils for exceptions.
*/
public final class ExceptionUtils {
private ExceptionUtils() {
}
/**
* Execute the callable {@code callable}.
*
* If the object {@code componentName} is already closed ({@code isClosed}), it will be
* failed immediately without calling {@code callable}.
*
* @param componentName the component name
* @param isClosed predicate to check whether the component is closed or not.
* @param callable the callable to execute
* @param result type
* @return the future represents the result.
*/
public static CompletableFuture callAndHandleClosedAsync(String componentName,
boolean isClosed,
CompletableRunnable callable) {
CompletableFuture future = FutureUtils.createFuture();
if (isClosed) {
future.completeExceptionally(new ObjectClosedException(componentName));
} else {
callable.run(future);
}
return future;
}
/**
* Convert a {@link Throwable} to an {@link IOException}.
*
* @param cause reason to fail
* @return a converted {@link IOException}.
*/
public static IOException toIOException(Throwable cause) {
if (cause instanceof IOException) {
return (IOException) cause;
} else if (cause instanceof ExecutionException || cause instanceof CompletionException) {
return toIOException(cause.getCause());
} else {
return new IOException(cause);
}
}
}