| /* |
| * 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.geode.distributed.internal; |
| |
| import org.apache.geode.GemFireException; |
| import org.apache.geode.InternalGemFireException; |
| import org.apache.geode.SerializationException; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| |
| /** |
| * Exception thrown when a DistributionMessage is processed to be propagated back to the sender of |
| * the message. |
| * |
| */ |
| public class ReplyException extends GemFireException { |
| private static final long serialVersionUID = -4410839793809166071L; |
| private static final String REMOTE_MEMBER_TOKEN = "Remote Member"; |
| private transient InternalDistributedMember sender; |
| |
| /** |
| * Creates a new instance of <code>ReplyException</code> without detail message. |
| * |
| * Used by serialization |
| */ |
| public ReplyException() {} |
| |
| |
| /** |
| * Constructs an instance of <code>ReplyException</code> with the specified detail message. |
| * |
| * @param msg the detail message. |
| */ |
| public ReplyException(String msg) { |
| super(msg); |
| } |
| |
| /** |
| * Constructs an instance of <code>ReplyException</code> with the specified detail message and |
| * cause. |
| * |
| * @param msg the detail message. |
| * @param cause the causal Throwable |
| */ |
| public ReplyException(String msg, Throwable cause) { |
| super(msg, cause); |
| } |
| |
| /** |
| * Constructs an instance of <code>ReplyException</code> with the specified cause. |
| * |
| * @param cause the causal Throwable |
| */ |
| public ReplyException(Throwable cause) { |
| super(cause); |
| } |
| |
| /** |
| * Before calling this method any expected "checked" causes should be handled by the caller. If |
| * cause is null or a checked exception (that is not ClassNotFound) then throw an |
| * InternalGemFireException because those should have already been handled. Otherwise |
| * ClassNotFoundException will be handled by throwing SerializationException. RuntimeException and |
| * Error will have their stack fixed up and then are thrown. |
| */ |
| public void handleCause() { |
| Throwable c = getCause(); |
| if (c == null) { |
| throw new InternalGemFireException( |
| String.format("unexpected exception on member %s", |
| getSender()), |
| this); |
| } |
| if (c instanceof RuntimeException) { |
| fixUpRemoteEx(c); |
| throw (RuntimeException) c; |
| } |
| if (c instanceof Error) { |
| fixUpRemoteEx(c); |
| throw (Error) c; |
| } |
| if (c instanceof ClassNotFoundException) { |
| // for bug 43602 |
| throw new SerializationException("Class not found", c); |
| } |
| throw new InternalGemFireException( |
| String.format("unexpected exception on member %s", |
| getSender()), |
| c); |
| } |
| |
| /** |
| * Fixes a remote exception that this ReplyException has wrapped. Adds the local stack frames. The |
| * remote stack elements have the sender id info. |
| * |
| * @param t Remote exception to fix up |
| * @since GemFire 5.1 |
| */ |
| private void fixUpRemoteEx(Throwable t) { |
| if (getSender() == null) { |
| return; |
| } |
| |
| String senderId = getSender().toString(); |
| addSenderInfo(t, senderId); |
| |
| StackTraceElement[] remoteStack = t.getStackTrace(); |
| StackTraceElement[] localStack = Thread.currentThread().getStackTrace(); |
| |
| int localStartIdx = 0; |
| if (localStartIdx < localStack.length) { |
| // pop off the fixUpRemoteEx frame |
| localStartIdx++; |
| if (localStartIdx < localStack.length) { |
| // pop off the handleAsUnexpected frame |
| localStartIdx++; |
| } |
| } |
| |
| // do not consider localStartIdx no. of elements. |
| StackTraceElement[] newStack = |
| new StackTraceElement[remoteStack.length + localStack.length - localStartIdx]; |
| |
| int i = 0; |
| for (; i < remoteStack.length; i++) { |
| newStack[i] = remoteStack[i]; |
| } |
| for (int j = 2; i < newStack.length; j++, i++) { |
| newStack[i] = localStack[j]; |
| } |
| |
| t.setStackTrace(newStack); |
| } |
| |
| /** |
| * Adds the sender information to the stack trace elements of the given exception. Also traverses |
| * recursively over the 'cause' for adding this sender information. |
| * |
| * @param toModify Throwable instance to modify the stack trace elements |
| * @param senderId id of the sender member |
| */ |
| private static void addSenderInfo(Throwable toModify, String senderId) { |
| StackTraceElement[] stackTrace = toModify.getStackTrace(); |
| |
| StackTraceElement element = null; |
| for (int i = 0; i < stackTrace.length; i++) { |
| element = stackTrace[i]; |
| if (!element.getClassName().startsWith(REMOTE_MEMBER_TOKEN)) { |
| stackTrace[i] = new StackTraceElement( |
| REMOTE_MEMBER_TOKEN + " '" + senderId + "' in " + element.getClassName(), |
| element.getMethodName(), element.getFileName(), element.getLineNumber()); |
| } |
| } |
| |
| toModify.setStackTrace(stackTrace); |
| Throwable cause = toModify.getCause(); |
| |
| if (cause != null) { |
| addSenderInfo(cause, senderId); |
| } |
| } |
| |
| /** |
| * Sets the member that threw the received exception |
| * |
| * @param sendr the member that threw the exception |
| * @since GemFire 6.0 |
| */ |
| public synchronized void setSenderIfNull(InternalDistributedMember sendr) { |
| if (this.sender == null) { |
| this.sender = sendr; |
| } |
| } |
| |
| /** |
| * Gets the member which threw the exception |
| * |
| * @return the throwing member |
| * @since GemFire 6.0 |
| */ |
| public synchronized InternalDistributedMember getSender() { |
| return this.sender; |
| } |
| |
| @Override |
| public String getMessage() { |
| InternalDistributedMember s = getSender(); |
| String m = super.getMessage(); |
| return (s != null) ? ("From " + s + ": " + m) : m; |
| } |
| } |