| /** |
| * 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.camel.builder; |
| |
| import java.util.List; |
| |
| import org.apache.camel.Channel; |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Processor; |
| import org.apache.camel.Route; |
| import org.apache.camel.TestSupport; |
| import org.apache.camel.impl.EventDrivenConsumerRoute; |
| import org.apache.camel.processor.DeadLetterChannel; |
| import org.apache.camel.processor.FilterProcessor; |
| import org.apache.camel.processor.LoggingErrorHandler; |
| import org.apache.camel.processor.RedeliveryPolicy; |
| import org.apache.camel.processor.SendProcessor; |
| |
| /** |
| * @version |
| */ |
| public class ErrorHandlerTest extends TestSupport { |
| |
| public void testOverloadingTheDefaultErrorHandler() throws Exception { |
| // START SNIPPET: e1 |
| RouteBuilder builder = new RouteBuilder() { |
| public void configure() { |
| // use logging error handler |
| errorHandler(loggingErrorHandler("com.mycompany.foo")); |
| |
| // here is our regular route |
| from("seda:a").to("seda:b"); |
| } |
| }; |
| // END SNIPPET: e1 |
| |
| List<Route> list = getRouteList(builder); |
| assertEquals("Number routes created" + list, 1, list.size()); |
| for (Route route : list) { |
| Endpoint key = route.getEndpoint(); |
| assertEquals("From endpoint", "seda://a", key.getEndpointUri()); |
| |
| EventDrivenConsumerRoute consumerRoute = assertIsInstanceOf(EventDrivenConsumerRoute.class, route); |
| Channel channel = unwrapChannel(consumerRoute.getProcessor()); |
| |
| assertIsInstanceOf(LoggingErrorHandler.class, channel.getErrorHandler()); |
| |
| Processor processor = unwrap(channel.getNextProcessor()); |
| assertIsInstanceOf(SendProcessor.class, processor); |
| } |
| } |
| |
| public void testOverloadingTheHandlerOnASingleRoute() throws Exception { |
| |
| // START SNIPPET: e2 |
| RouteBuilder builder = new RouteBuilder() { |
| public void configure() { |
| // this route is using a nested logging error handler |
| from("seda:a") |
| // here we configure the logging error handler |
| .errorHandler(loggingErrorHandler("com.mycompany.foo")) |
| // and we continue with the routing here |
| .to("seda:b"); |
| |
| // this route will use the default error handler (DeadLetterChannel) |
| from("seda:b").to("seda:c"); |
| } |
| }; |
| // END SNIPPET: e2 |
| |
| List<Route> list = getRouteList(builder); |
| assertEquals("Number routes created" + list, 2, list.size()); |
| } |
| |
| public void testConfigureDeadLetterChannel() throws Exception { |
| // START SNIPPET: e3 |
| RouteBuilder builder = new RouteBuilder() { |
| public void configure() { |
| // using dead letter channel with a seda queue for errors |
| errorHandler(deadLetterChannel("seda:errors")); |
| |
| // here is our route |
| from("seda:a").to("seda:b"); |
| } |
| }; |
| // END SNIPPET: e3 |
| |
| List<Route> list = getRouteList(builder); |
| assertEquals("Number routes created" + list, 1, list.size()); |
| for (Route route : list) { |
| Endpoint key = route.getEndpoint(); |
| assertEquals("From endpoint", "seda://a", key.getEndpointUri()); |
| |
| EventDrivenConsumerRoute consumerRoute = assertIsInstanceOf(EventDrivenConsumerRoute.class, route); |
| Channel channel = unwrapChannel(consumerRoute.getProcessor()); |
| |
| assertIsInstanceOf(SendProcessor.class, channel.getNextProcessor()); |
| } |
| } |
| |
| |
| public void testConfigureDeadLetterChannelWithCustomRedeliveryPolicy() throws Exception { |
| // START SNIPPET: e4 |
| RouteBuilder builder = new RouteBuilder() { |
| public void configure() { |
| // configures dead letter channel to use seda queue for errors and use at most 2 redelveries |
| // and exponential backoff |
| errorHandler(deadLetterChannel("seda:errors").maximumRedeliveries(2).useExponentialBackOff()); |
| |
| // here is our route |
| from("seda:a").to("seda:b"); |
| } |
| }; |
| // END SNIPPET: e4 |
| |
| List<Route> list = getRouteList(builder); |
| assertEquals("Number routes created" + list, 1, list.size()); |
| for (Route route : list) { |
| Endpoint key = route.getEndpoint(); |
| assertEquals("From endpoint", "seda://a", key.getEndpointUri()); |
| |
| EventDrivenConsumerRoute consumerRoute = assertIsInstanceOf(EventDrivenConsumerRoute.class, route); |
| Processor processor = consumerRoute.getProcessor(); |
| Channel channel = unwrapChannel(processor); |
| |
| DeadLetterChannel deadLetterChannel = assertIsInstanceOf(DeadLetterChannel.class, channel.getErrorHandler()); |
| RedeliveryPolicy redeliveryPolicy = deadLetterChannel.getRedeliveryPolicy(); |
| |
| assertEquals("getMaximumRedeliveries()", 2, redeliveryPolicy.getMaximumRedeliveries()); |
| assertEquals("isUseExponentialBackOff()", true, redeliveryPolicy.isUseExponentialBackOff()); |
| } |
| } |
| |
| public void testLoggingErrorHandler() throws Exception { |
| |
| // START SNIPPET: e5 |
| RouteBuilder builder = new RouteBuilder() { |
| public void configure() { |
| from("seda:a").errorHandler(loggingErrorHandler("FOO.BAR")).filter(body().isInstanceOf(String.class)).to("seda:b"); |
| } |
| }; |
| // END SNIPPET: e5 |
| |
| List<Route> routes = getRouteList(builder); |
| assertEquals("Number routes created", 1, routes.size()); |
| for (Route route : routes) { |
| Endpoint key = route.getEndpoint(); |
| assertEquals("From endpoint", "seda://a", key.getEndpointUri()); |
| EventDrivenConsumerRoute consumerRoute = assertIsInstanceOf(EventDrivenConsumerRoute.class, route); |
| Channel channel = unwrapChannel(consumerRoute.getProcessor()); |
| |
| assertIsInstanceOf(LoggingErrorHandler.class, channel.getErrorHandler()); |
| assertIsInstanceOf(FilterProcessor.class, channel.getNextProcessor()); |
| } |
| } |
| |
| } |