1 /* 2 * Copyright (C) 2008 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.inject.internal; 18 19 import com.google.inject.Guice; 20 import com.google.inject.spi.Message; 21 import java.util.logging.Level; 22 import java.util.logging.Logger; 23 24 /** 25 * Handles {@code Binder.addError} commands. 26 * 27 * @author crazybob (at) google.com (Bob Lee) 28 * @author jessewilson (at) google.com (Jesse Wilson) 29 */ 30 final class MessageProcessor extends AbstractProcessor { 31 32 private static final Logger logger = Logger.getLogger(Guice.class.getName()); 33 34 MessageProcessor(Errors errors) { 35 super(errors); 36 } 37 38 @Override 39 public Boolean visit(Message message) { 40 if (message.getCause() != null) { 41 String rootMessage = getRootMessage(message.getCause()); 42 logger.log( 43 Level.INFO, 44 "An exception was caught and reported. Message: " + rootMessage, 45 message.getCause()); 46 } 47 48 errors.addMessage(message); 49 return true; 50 } 51 52 public static String getRootMessage(Throwable t) { 53 Throwable cause = t.getCause(); 54 return cause == null ? t.toString() : getRootMessage(cause); 55 } 56 } 57
