Example usage for org.springframework.amqp.core TopicExchange getName

Introduction

In this page you can find the example usage for org.springframework.amqp.core TopicExchange getName.

Prototype

@Override
    public String getName() 

Source Link

Usage

From source file:org.springframework.cloud.stream.binder.rabbit.RabbitBinderCleanerTests.java

@Test
public void testCleanStream() {
    final RabbitBindingCleaner cleaner = new RabbitBindingCleaner();
    final RestTemplate template = RabbitManagementUtils.buildRestTemplate("http://localhost:15672", "guest",
            "guest");
    final String stream1 = UUID.randomUUID().toString();
    String stream2 = stream1 + "-1";
    String firstQueue = null;/*from www.  jav a2 s. c o m*/
    CachingConnectionFactory connectionFactory = rabbitWithMgmtEnabled.getResource();
    RabbitAdmin rabbitAdmin = new RabbitAdmin(connectionFactory);
    for (int i = 0; i < 5; i++) {
        String queue1Name = AbstractBinder.applyPrefix(BINDER_PREFIX, stream1 + ".default." + i);
        String queue2Name = AbstractBinder.applyPrefix(BINDER_PREFIX, stream2 + ".default." + i);
        if (firstQueue == null) {
            firstQueue = queue1Name;
        }
        URI uri = UriComponentsBuilder.fromUriString("http://localhost:15672/api/queues")
                .pathSegment("{vhost}", "{queue}").buildAndExpand("/", queue1Name).encode().toUri();
        template.put(uri, new AmqpQueue(false, true));
        uri = UriComponentsBuilder.fromUriString("http://localhost:15672/api/queues")
                .pathSegment("{vhost}", "{queue}").buildAndExpand("/", queue2Name).encode().toUri();
        template.put(uri, new AmqpQueue(false, true));
        uri = UriComponentsBuilder.fromUriString("http://localhost:15672/api/queues")
                .pathSegment("{vhost}", "{queue}")
                .buildAndExpand("/", AbstractBinder.constructDLQName(queue1Name)).encode().toUri();
        template.put(uri, new AmqpQueue(false, true));
        TopicExchange exchange = new TopicExchange(queue1Name);
        rabbitAdmin.declareExchange(exchange);
        rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue(queue1Name)).to(exchange).with(queue1Name));
        exchange = new TopicExchange(queue2Name);
        rabbitAdmin.declareExchange(exchange);
        rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue(queue2Name)).to(exchange).with(queue2Name));
    }
    final TopicExchange topic1 = new TopicExchange(
            AbstractBinder.applyPrefix(BINDER_PREFIX, stream1 + ".foo.bar"));
    rabbitAdmin.declareExchange(topic1);
    rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue(firstQueue)).to(topic1).with("#"));
    String foreignQueue = UUID.randomUUID().toString();
    rabbitAdmin.declareQueue(new Queue(foreignQueue));
    rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue(foreignQueue)).to(topic1).with("#"));
    final TopicExchange topic2 = new TopicExchange(
            AbstractBinder.applyPrefix(BINDER_PREFIX, stream2 + ".foo.bar"));
    rabbitAdmin.declareExchange(topic2);
    rabbitAdmin.declareBinding(BindingBuilder.bind(new Queue(firstQueue)).to(topic2).with("#"));
    new RabbitTemplate(connectionFactory).execute(new ChannelCallback<Void>() {

        @Override
        public Void doInRabbit(Channel channel) throws Exception {
            String queueName = AbstractBinder.applyPrefix(BINDER_PREFIX, stream1 + ".default." + 4);
            String consumerTag = channel.basicConsume(queueName, new DefaultConsumer(channel));
            try {
                waitForConsumerStateNot(queueName, 0);
                cleaner.clean(stream1, false);
                fail("Expected exception");
            } catch (RabbitAdminException e) {
                assertThat(e).hasMessageContaining("Queue " + queueName + " is in use");
            }
            channel.basicCancel(consumerTag);
            waitForConsumerStateNot(queueName, 1);
            try {
                cleaner.clean(stream1, false);
                fail("Expected exception");
            } catch (RabbitAdminException e) {
                assertThat(e).hasMessageContaining("Cannot delete exchange ");
                assertThat(e).hasMessageContaining("; it has bindings:");
            }
            return null;
        }

        private void waitForConsumerStateNot(String queueName, int state) throws InterruptedException {
            int n = 0;
            URI uri = UriComponentsBuilder.fromUriString("http://localhost:15672/api/queues")
                    .pathSegment("{vhost}", "{queue}").buildAndExpand("/", queueName).encode().toUri();
            while (n++ < 100) {
                @SuppressWarnings("unchecked")
                Map<String, Object> queueInfo = template.getForObject(uri, Map.class);
                if (!queueInfo.get("consumers").equals(Integer.valueOf(state))) {
                    break;
                }
                Thread.sleep(100);
            }
            assertThat(n < 100).withFailMessage("Consumer state remained at " + state + " after 10 seconds");
        }

    });
    rabbitAdmin.deleteExchange(topic1.getName()); // easier than deleting the binding
    rabbitAdmin.declareExchange(topic1);
    rabbitAdmin.deleteQueue(foreignQueue);
    connectionFactory.destroy();
    Map<String, List<String>> cleanedMap = cleaner.clean(stream1, false);
    assertThat(cleanedMap).hasSize(2);
    List<String> cleanedQueues = cleanedMap.get("queues");
    // should *not* clean stream2
    assertThat(cleanedQueues).hasSize(10);
    for (int i = 0; i < 5; i++) {
        assertThat(cleanedQueues.get(i * 2)).isEqualTo(BINDER_PREFIX + stream1 + ".default." + i);
        assertThat(cleanedQueues.get(i * 2 + 1)).isEqualTo(BINDER_PREFIX + stream1 + ".default." + i + ".dlq");
    }
    List<String> cleanedExchanges = cleanedMap.get("exchanges");
    assertThat(cleanedExchanges).hasSize(6);

    // wild card *should* clean stream2
    cleanedMap = cleaner.clean(stream1 + "*", false);
    assertThat(cleanedMap).hasSize(2);
    cleanedQueues = cleanedMap.get("queues");
    assertThat(cleanedQueues).hasSize(5);
    for (int i = 0; i < 5; i++) {
        assertThat(cleanedQueues.get(i)).isEqualTo(BINDER_PREFIX + stream2 + ".default." + i);
    }
    cleanedExchanges = cleanedMap.get("exchanges");
    assertThat(cleanedExchanges).hasSize(6);
}

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