001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.processor.validation; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Predicate; 021 import org.apache.camel.Processor; 022 import org.apache.camel.Traceable; 023 import org.apache.camel.support.ServiceSupport; 024 import org.apache.camel.util.ObjectHelper; 025 import org.slf4j.Logger; 026 import org.slf4j.LoggerFactory; 027 028 /** 029 * A processor which validates the content of the inbound message body against a {@link Predicate}. 030 * 031 * @version 032 */ 033 public class PredicateValidatingProcessor extends ServiceSupport implements Processor, Traceable { 034 035 private static final Logger LOG = LoggerFactory.getLogger(PredicateValidatingProcessor.class); 036 037 private final Predicate predicate; 038 039 public PredicateValidatingProcessor(Predicate predicate) { 040 ObjectHelper.notNull(predicate, "predicate", this); 041 this.predicate = predicate; 042 } 043 044 public void process(Exchange exchange) throws Exception { 045 boolean matches = predicate.matches(exchange); 046 047 if (LOG.isDebugEnabled()) { 048 LOG.debug("Validation {} for {} with Predicate[{}]", new Object[]{matches ? "succeed" : "failed", exchange, predicate}); 049 } 050 051 if (!matches) { 052 throw new PredicateValidationException(exchange, predicate); 053 } 054 } 055 056 public Predicate getPredicate() { 057 return predicate; 058 } 059 060 @Override 061 public String toString() { 062 return "validate(" + predicate + ")"; 063 } 064 065 public String getTraceLabel() { 066 return "validate[" + predicate + "]"; 067 } 068 069 @Override 070 protected void doStart() throws Exception { 071 // noop 072 } 073 074 @Override 075 protected void doStop() throws Exception { 076 // noop 077 } 078 }