| /** |
| * 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.issues; |
| |
| import java.io.IOException; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.camel.CamelExecutionException; |
| import org.apache.camel.ContextTestSupport; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.builder.RouteBuilder; |
| |
| /* |
| * @version |
| */ |
| public class ExceptionThrownFromOnExceptionTest extends ContextTestSupport { |
| |
| private static final AtomicInteger RETRY = new AtomicInteger(); |
| private static final AtomicInteger ON_EXCEPTION_RETRY = new AtomicInteger(); |
| |
| @Override |
| public boolean isUseRouteBuilder() { |
| return false; |
| } |
| |
| public void testExceptionThrownFromOnException() throws Exception { |
| RETRY.set(0); |
| ON_EXCEPTION_RETRY.set(0); |
| |
| context.addRoutes(new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| // on exception to catch all IO exceptions and handle them specially |
| onException(IOException.class) |
| .maximumRedeliveries(3) |
| .to("mock:b") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| ON_EXCEPTION_RETRY.incrementAndGet(); |
| throw new IOException("Some other IOException"); |
| } |
| }) |
| .to("mock:c"); |
| |
| from("direct:start") |
| .to("direct:intermediate") |
| .to("mock:result"); |
| |
| from("direct:intermediate") |
| .to("mock:a") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| RETRY.incrementAndGet(); |
| throw new IOException("IO error"); |
| } |
| }) |
| .to("mock:end"); |
| } |
| }); |
| context.start(); |
| |
| getMockEndpoint("mock:a").expectedMessageCount(1); |
| getMockEndpoint("mock:b").expectedMessageCount(1); |
| getMockEndpoint("mock:c").expectedMessageCount(0); |
| getMockEndpoint("mock:result").expectedMessageCount(0); |
| getMockEndpoint("mock:end").expectedMessageCount(0); |
| |
| try { |
| template.sendBody("direct:start", "Hello World"); |
| fail("Should have thrown an exception"); |
| } catch (CamelExecutionException e) { |
| IOException cause = assertIsInstanceOf(IOException.class, e.getCause()); |
| assertEquals("Some other IOException", cause.getMessage()); |
| } |
| |
| assertMockEndpointsSatisfied(); |
| |
| assertEquals("Should try 4 times (1 first, 3 retry)", 4, RETRY.get()); |
| assertEquals("Should only invoke onException once", 1, ON_EXCEPTION_RETRY.get()); |
| } |
| |
| public void testExceptionThrownFromOnExceptionAndHandled() throws Exception { |
| RETRY.set(0); |
| ON_EXCEPTION_RETRY.set(0); |
| |
| context.addRoutes(new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| // on exception to catch all IO exceptions and handle them specially |
| onException(IOException.class) |
| .maximumRedeliveries(3) |
| // this time we handle the exception |
| .handled(true) |
| .to("mock:b") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| ON_EXCEPTION_RETRY.incrementAndGet(); |
| throw new IOException("Some other IOException"); |
| } |
| }) |
| .to("mock:c"); |
| |
| from("direct:start") |
| .to("direct:intermediate") |
| .to("mock:result"); |
| |
| from("direct:intermediate") |
| .to("mock:a") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| RETRY.incrementAndGet(); |
| throw new IOException("IO error"); |
| } |
| }) |
| .to("mock:end"); |
| } |
| }); |
| context.start(); |
| |
| getMockEndpoint("mock:a").expectedMessageCount(1); |
| getMockEndpoint("mock:b").expectedMessageCount(1); |
| getMockEndpoint("mock:c").expectedMessageCount(0); |
| getMockEndpoint("mock:result").expectedMessageCount(0); |
| getMockEndpoint("mock:end").expectedMessageCount(0); |
| |
| try { |
| template.sendBody("direct:start", "Hello World"); |
| fail("Should have thrown an exception"); |
| } catch (CamelExecutionException e) { |
| IOException cause = assertIsInstanceOf(IOException.class, e.getCause()); |
| assertEquals("Some other IOException", cause.getMessage()); |
| } |
| |
| assertMockEndpointsSatisfied(); |
| |
| assertEquals("Should try 4 times (1 first, 3 retry)", 4, RETRY.get()); |
| assertEquals("Should only invoke onException once", 1, ON_EXCEPTION_RETRY.get()); |
| } |
| |
| public void testExceptionThrownFromOnExceptionWithDeadLetterChannel() throws Exception { |
| RETRY.set(0); |
| ON_EXCEPTION_RETRY.set(0); |
| |
| context.addRoutes(new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| // DLC |
| deadLetterChannel("mock:error").redeliveryDelay(0).maximumRedeliveries(3); |
| |
| // on exception to catch all IO exceptions and handle them specially |
| onException(IOException.class) |
| .maximumRedeliveries(3) |
| .to("mock:b") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| ON_EXCEPTION_RETRY.incrementAndGet(); |
| throw new IOException("Some other IOException"); |
| } |
| }) |
| .to("mock:c"); |
| |
| from("direct:start") |
| .to("direct:intermediate") |
| .to("mock:result"); |
| |
| from("direct:intermediate") |
| .to("mock:a") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| RETRY.incrementAndGet(); |
| throw new IOException("IO error"); |
| } |
| }) |
| .to("mock:end"); |
| } |
| }); |
| context.start(); |
| |
| getMockEndpoint("mock:a").expectedMessageCount(1); |
| getMockEndpoint("mock:b").expectedMessageCount(1); |
| getMockEndpoint("mock:c").expectedMessageCount(0); |
| getMockEndpoint("mock:result").expectedMessageCount(0); |
| getMockEndpoint("mock:end").expectedMessageCount(0); |
| // the error will not be handled by DLC since we had an onException, and that failed, |
| // so the exchange will throw an exception |
| getMockEndpoint("mock:error").expectedMessageCount(0); |
| |
| try { |
| template.sendBody("direct:start", "Hello World"); |
| fail("Should have thrown an exception"); |
| } catch (CamelExecutionException e) { |
| IOException cause = assertIsInstanceOf(IOException.class, e.getCause()); |
| assertEquals("Some other IOException", cause.getMessage()); |
| } |
| |
| assertMockEndpointsSatisfied(); |
| |
| assertEquals("Should try 4 times (1 first, 3 retry)", 4, RETRY.get()); |
| assertEquals("Should only invoke onException once", 1, ON_EXCEPTION_RETRY.get()); |
| } |
| |
| public void testExceptionThrownFromOnExceptionAndHandledWithDeadLetterChannel() throws Exception { |
| RETRY.set(0); |
| ON_EXCEPTION_RETRY.set(0); |
| |
| context.addRoutes(new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| // DLC |
| deadLetterChannel("mock:error").redeliveryDelay(0).maximumRedeliveries(3); |
| |
| // on exception to catch all IO exceptions and handle them specially |
| onException(IOException.class) |
| .maximumRedeliveries(3) |
| // this time we handle the exception |
| .handled(true) |
| .to("mock:b") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| ON_EXCEPTION_RETRY.incrementAndGet(); |
| throw new IOException("Some other IOException"); |
| } |
| }) |
| .to("mock:c"); |
| |
| from("direct:start") |
| .to("direct:intermediate") |
| .to("mock:result"); |
| |
| from("direct:intermediate") |
| .to("mock:a") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| RETRY.incrementAndGet(); |
| throw new IOException("IO error"); |
| } |
| }) |
| .to("mock:end"); |
| } |
| }); |
| context.start(); |
| |
| getMockEndpoint("mock:a").expectedMessageCount(1); |
| getMockEndpoint("mock:b").expectedMessageCount(1); |
| getMockEndpoint("mock:c").expectedMessageCount(0); |
| getMockEndpoint("mock:result").expectedMessageCount(0); |
| getMockEndpoint("mock:end").expectedMessageCount(0); |
| // the error will not be handled by DLC since we had an onException, and that failed, |
| // so the exchange will throw an exception |
| getMockEndpoint("mock:error").expectedMessageCount(0); |
| |
| try { |
| template.sendBody("direct:start", "Hello World"); |
| fail("Should have thrown an exception"); |
| } catch (CamelExecutionException e) { |
| IOException cause = assertIsInstanceOf(IOException.class, e.getCause()); |
| assertEquals("Some other IOException", cause.getMessage()); |
| } |
| |
| assertMockEndpointsSatisfied(); |
| |
| assertEquals("Should try 4 times (1 first, 3 retry)", 4, RETRY.get()); |
| assertEquals("Should only invoke onException once", 1, ON_EXCEPTION_RETRY.get()); |
| } |
| |
| public void testNoExceptionThrownFromOnExceptionWithDeadLetterChannel() throws Exception { |
| RETRY.set(0); |
| ON_EXCEPTION_RETRY.set(0); |
| |
| context.addRoutes(new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| // DLC |
| deadLetterChannel("mock:error").redeliveryDelay(0).maximumRedeliveries(3); |
| |
| // on exception to catch all IO exceptions and handle them specially |
| onException(IOException.class) |
| .maximumRedeliveries(3) |
| .to("mock:b") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| ON_EXCEPTION_RETRY.incrementAndGet(); |
| // no exception is thrown this time |
| } |
| }) |
| .to("mock:c"); |
| |
| from("direct:start") |
| .to("direct:intermediate") |
| .to("mock:result"); |
| |
| from("direct:intermediate") |
| .to("mock:a") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| RETRY.incrementAndGet(); |
| throw new IOException("IO error"); |
| } |
| }) |
| .to("mock:end"); |
| } |
| }); |
| context.start(); |
| |
| getMockEndpoint("mock:a").expectedMessageCount(1); |
| getMockEndpoint("mock:b").expectedMessageCount(1); |
| getMockEndpoint("mock:c").expectedMessageCount(1); |
| getMockEndpoint("mock:result").expectedMessageCount(0); |
| getMockEndpoint("mock:end").expectedMessageCount(0); |
| // the exception is handled by the onException and thus not the DLC |
| getMockEndpoint("mock:error").expectedMessageCount(0); |
| |
| // and this time there was no exception thrown from onException, |
| // but the caller still fails since handled is false on onException |
| try { |
| template.sendBody("direct:start", "Hello World"); |
| fail("Should have thrown an exception"); |
| } catch (CamelExecutionException e) { |
| // this time its the first exception thrown from the route |
| IOException cause = assertIsInstanceOf(IOException.class, e.getCause()); |
| assertEquals("IO error", cause.getMessage()); |
| } |
| |
| assertMockEndpointsSatisfied(); |
| |
| assertEquals("Should try 4 times (1 first, 3 retry)", 4, RETRY.get()); |
| assertEquals("Should only invoke onException once", 1, ON_EXCEPTION_RETRY.get()); |
| } |
| |
| public void testNoExceptionThrownFromOnExceptionAndHandledWithDeadLetterChannel() throws Exception { |
| RETRY.set(0); |
| ON_EXCEPTION_RETRY.set(0); |
| |
| context.addRoutes(new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| // DLC |
| deadLetterChannel("mock:error").redeliveryDelay(0).maximumRedeliveries(3); |
| |
| // on exception to catch all IO exceptions and handle them specially |
| onException(IOException.class) |
| .maximumRedeliveries(3) |
| // we now handle the exception |
| .handled(true) |
| .to("mock:b") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| ON_EXCEPTION_RETRY.incrementAndGet(); |
| // no exception is thrown this time |
| } |
| }) |
| .to("mock:c"); |
| |
| from("direct:start") |
| .to("direct:intermediate") |
| .to("mock:result"); |
| |
| from("direct:intermediate") |
| .to("mock:a") |
| .process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| RETRY.incrementAndGet(); |
| throw new IOException("IO error"); |
| } |
| }) |
| .to("mock:end"); |
| } |
| }); |
| context.start(); |
| |
| getMockEndpoint("mock:a").expectedMessageCount(1); |
| getMockEndpoint("mock:b").expectedMessageCount(1); |
| getMockEndpoint("mock:c").expectedMessageCount(1); |
| getMockEndpoint("mock:result").expectedMessageCount(0); |
| getMockEndpoint("mock:end").expectedMessageCount(0); |
| // the exception is handled by onException so it goes not in DLC |
| getMockEndpoint("mock:error").expectedMessageCount(0); |
| |
| // and this time there was no exception thrown from onException, |
| // and the exception is handled so the caller should not fail |
| template.sendBody("direct:start", "Hello World"); |
| |
| assertMockEndpointsSatisfied(); |
| |
| assertEquals("Should try 4 times (1 first, 3 retry)", 4, RETRY.get()); |
| assertEquals("Should only invoke onException once", 1, ON_EXCEPTION_RETRY.get()); |
| } |
| |
| } |
| |