Examples with PollingConsumerPollStrategy org.apache.camel.spi.PollingConsumerPollStrategy used on opensource projects

Example 1 with PollingConsumerPollStrategy

use of org.apache.camel.spi.PollingConsumerPollStrategy in project camel by apache.

the class ScheduledPollConsumerBackoffTest method testBackoffError.

public void testBackoffError() throws Exception {
    final Endpoint endpoint = getMockEndpoint("mock:foo");
    final Exception expectedException = new Exception("Hello, I should be thrown on shutdown only!");
    MockScheduledPollConsumer consumer = new MockScheduledPollConsumer(endpoint, expectedException);
    consumer.setBackoffMultiplier(4);
    consumer.setBackoffErrorThreshold(3);
    consumer.setPollStrategy(new PollingConsumerPollStrategy() {

        public boolean begin(Consumer consumer, Endpoint endpoint) {
            return true;
        }

        public void commit(Consumer consumer, Endpoint endpoint, int polledMessages) {
            commits++;
        }

        public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
            errors++;
            return false;
        }
    });
    consumer.start();
    consumer.run();
    consumer.run();
    consumer.run();
    assertEquals(3, errors);
    // now it should backoff 4 times
    consumer.run();
    consumer.run();
    consumer.run();
    consumer.run();
    assertEquals(3, errors);
    // and now we poll again
    consumer.run();
    consumer.run();
    consumer.run();
    assertEquals(6, errors);
    // now it should backoff 4 times
    consumer.run();
    consumer.run();
    consumer.run();
    consumer.run();
    assertEquals(6, errors);
    consumer.stop();
}

Example 2 with PollingConsumerPollStrategy

use of org.apache.camel.spi.PollingConsumerPollStrategy in project camel by apache.

the class ScheduledPollConsumerBackoffTest method testBackoffIdle.

public void testBackoffIdle() throws Exception {
    final Endpoint endpoint = getMockEndpoint("mock:foo");
    MockScheduledPollConsumer consumer = new MockScheduledPollConsumer(endpoint, null);
    consumer.setBackoffMultiplier(4);
    consumer.setBackoffIdleThreshold(2);
    consumer.setPollStrategy(new PollingConsumerPollStrategy() {

        public boolean begin(Consumer consumer, Endpoint endpoint) {
            return true;
        }

        public void commit(Consumer consumer, Endpoint endpoint, int polledMessages) {
            commits++;
        }

        public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
            return false;
        }
    });
    consumer.start();
    consumer.run();
    consumer.run();
    assertEquals(2, commits);
    // now it should backoff 4 times
    consumer.run();
    consumer.run();
    consumer.run();
    consumer.run();
    assertEquals(2, commits);
    // and now we poll again
    consumer.run();
    consumer.run();
    assertEquals(4, commits);
    // now it should backoff 4 times
    consumer.run();
    consumer.run();
    consumer.run();
    consumer.run();
    assertEquals(4, commits);
    consumer.run();
    assertEquals(5, commits);
    consumer.stop();
}

Example 3 with PollingConsumerPollStrategy

use of org.apache.camel.spi.PollingConsumerPollStrategy in project camel by apache.

the class ScheduledPollConsumerGreedyTest method test321NotGreedy.

public void test321NotGreedy() throws Exception {
    polled.set(0);
    MockScheduledPollConsumer consumer = new Mock321ScheduledPollConsumer(getMockEndpoint("mock:foo"), null);
    consumer.setGreedy(false);
    consumer.setPollStrategy(new PollingConsumerPollStrategy() {

        public boolean begin(Consumer consumer, Endpoint endpoint) {
            return true;
        }

        public void commit(Consumer consumer, Endpoint endpoint, int polledMessages) {
            polled.addAndGet(polledMessages);
        }

        public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
            return false;
        }
    });
    consumer.start();
    consumer.run();
    assertEquals(3, polled.get());
    consumer.run();
    assertEquals(5, polled.get());
    consumer.run();
    assertEquals(6, polled.get());
    consumer.run();
    assertEquals(6, polled.get());
    consumer.stop();
}

Example 4 with PollingConsumerPollStrategy

use of org.apache.camel.spi.PollingConsumerPollStrategy in project camel by apache.

the class ScheduledPollConsumerGreedyTest method test321Greedy.

public void test321Greedy() throws Exception {
    polled.set(0);
    MockScheduledPollConsumer consumer = new Mock321ScheduledPollConsumer(getMockEndpoint("mock:foo"), null);
    consumer.setGreedy(true);
    consumer.setPollStrategy(new PollingConsumerPollStrategy() {

        public boolean begin(Consumer consumer, Endpoint endpoint) {
            return true;
        }

        public void commit(Consumer consumer, Endpoint endpoint, int polledMessages) {
            polled.addAndGet(polledMessages);
        }

        public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
            return false;
        }
    });
    consumer.start();
    consumer.run();
    assertEquals(6, polled.get());
    consumer.stop();
}

Example 5 with PollingConsumerPollStrategy

use of org.apache.camel.spi.PollingConsumerPollStrategy in project camel by apache.

the class ScheduledPollConsumerTest method testRetryAtMostThreeTimes.

public void testRetryAtMostThreeTimes() throws Exception {
    counter = 0;
    event = "";
    final Exception expectedException = new Exception("Hello, I should be thrown on shutdown only!");
    final Endpoint endpoint = getMockEndpoint("mock:foo");
    MockScheduledPollConsumer consumer = new MockScheduledPollConsumer(endpoint, expectedException);
    consumer.setPollStrategy(new PollingConsumerPollStrategy() {

        public boolean begin(Consumer consumer, Endpoint endpoint) {
            return true;
        }

        public void commit(Consumer consumer, Endpoint endpoint, int polledMessages) {
            event += "commit";
        }

        public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
            event += "rollback";
            counter++;
            if (retryCounter < 3) {
                return true;
            }
            return false;
        }
    });
    consumer.setUseFixedDelay(true);
    consumer.setDelay(60000);
    consumer.start();
    // poll that throws an exception
    consumer.run();
    consumer.stop();
    // 3 retries + 1 last failed attempt when we give up
    assertEquals(4, counter);
    assertEquals("rollbackrollbackrollbackrollback", event);
}