Java tutorial
/** * 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.component.rabbitmq; import java.math.BigDecimal; import java.util.Date; import java.util.HashMap; import java.util.Map; import java.util.UUID; import java.util.concurrent.ThreadPoolExecutor; import com.rabbitmq.client.AMQP; import com.rabbitmq.client.Address; import com.rabbitmq.client.Envelope; import com.rabbitmq.client.impl.LongStringHelper; import org.apache.camel.Exchange; import org.apache.camel.test.junit4.CamelTestSupport; import org.junit.Test; import org.mockito.Mockito; public class RabbitMQEndpointTest extends CamelTestSupport { private Envelope envelope = Mockito.mock(Envelope.class); private AMQP.BasicProperties properties = Mockito.mock(AMQP.BasicProperties.class); @Test public void testCreatingRabbitExchangeSetsStandardHeaders() throws Exception { RabbitMQEndpoint endpoint = context.getEndpoint("rabbitmq:localhost/exchange", RabbitMQEndpoint.class); String routingKey = UUID.randomUUID().toString(); String exchangeName = UUID.randomUUID().toString(); long tag = UUID.randomUUID().toString().hashCode(); Mockito.when(envelope.getRoutingKey()).thenReturn(routingKey); Mockito.when(envelope.getExchange()).thenReturn(exchangeName); Mockito.when(envelope.getDeliveryTag()).thenReturn(tag); Mockito.when(properties.getHeaders()).thenReturn(null); byte[] body = new byte[20]; Exchange exchange = endpoint.createRabbitExchange(envelope, properties, body); assertEquals(exchangeName, exchange.getIn().getHeader(RabbitMQConstants.EXCHANGE_NAME)); assertEquals(routingKey, exchange.getIn().getHeader(RabbitMQConstants.ROUTING_KEY)); assertEquals(tag, exchange.getIn().getHeader(RabbitMQConstants.DELIVERY_TAG)); assertEquals(body, exchange.getIn().getBody()); } @Test public void testCreatingRabbitExchangeSetsCustomHeaders() throws Exception { RabbitMQEndpoint endpoint = context.getEndpoint("rabbitmq:localhost/exchange", RabbitMQEndpoint.class); String routingKey = UUID.randomUUID().toString(); String exchangeName = UUID.randomUUID().toString(); long tag = UUID.randomUUID().toString().hashCode(); Mockito.when(envelope.getRoutingKey()).thenReturn(routingKey); Mockito.when(envelope.getExchange()).thenReturn(exchangeName); Mockito.when(envelope.getDeliveryTag()).thenReturn(tag); Map<String, Object> customHeaders = new HashMap<String, Object>(); customHeaders.put("stringHeader", "A string"); customHeaders.put("bigDecimalHeader", new BigDecimal("12.34")); customHeaders.put("integerHeader", 42); customHeaders.put("doubleHeader", 42.24); customHeaders.put("booleanHeader", true); customHeaders.put("dateHeader", new Date(0)); customHeaders.put("byteArrayHeader", "foo".getBytes()); customHeaders.put("longStringHeader", LongStringHelper.asLongString("Some really long string")); Mockito.when(properties.getHeaders()).thenReturn(customHeaders); byte[] body = new byte[20]; Exchange exchange = endpoint.createRabbitExchange(envelope, properties, body); assertEquals(exchangeName, exchange.getIn().getHeader(RabbitMQConstants.EXCHANGE_NAME)); assertEquals(routingKey, exchange.getIn().getHeader(RabbitMQConstants.ROUTING_KEY)); assertEquals(tag, exchange.getIn().getHeader(RabbitMQConstants.DELIVERY_TAG)); assertEquals("A string", exchange.getIn().getHeader("stringHeader")); assertEquals(new BigDecimal("12.34"), exchange.getIn().getHeader("bigDecimalHeader")); assertEquals(42, exchange.getIn().getHeader("integerHeader")); assertEquals(42.24, exchange.getIn().getHeader("doubleHeader")); assertEquals(true, exchange.getIn().getHeader("booleanHeader")); assertEquals(new Date(0), exchange.getIn().getHeader("dateHeader")); assertArrayEquals("foo".getBytes(), (byte[]) exchange.getIn().getHeader("byteArrayHeader")); assertEquals("Some really long string", exchange.getIn().getHeader("longStringHeader")); assertEquals(body, exchange.getIn().getBody()); } @Test public void creatingExecutorUsesThreadPoolSettings() throws Exception { RabbitMQEndpoint endpoint = context.getEndpoint("rabbitmq:localhost/exchange?threadPoolSize=20", RabbitMQEndpoint.class); assertEquals(20, endpoint.getThreadPoolSize()); ThreadPoolExecutor executor = assertIsInstanceOf(ThreadPoolExecutor.class, endpoint.createExecutor()); assertEquals(20, executor.getCorePoolSize()); } @Test public void assertSingleton() throws Exception { RabbitMQEndpoint endpoint = context.getEndpoint("rabbitmq:localhost/exchange", RabbitMQEndpoint.class); assertTrue(endpoint.isSingleton()); } @Test public void brokerEndpointAddressesSettings() throws Exception { RabbitMQEndpoint endpoint = context.getEndpoint( "rabbitmq:localhost/exchange?addresses=server1:12345,server2:12345", RabbitMQEndpoint.class); assertEquals("Wrong size of endpoint addresses.", 2, endpoint.getAddresses().length); assertEquals("Get a wrong endpoint address.", new Address("server1", 12345), endpoint.getAddresses()[0]); assertEquals("Get a wrong endpoint address.", new Address("server2", 12345), endpoint.getAddresses()[1]); } }