Examples with TopicAlreadyExistsException co.cask.cdap.api.messaging.TopicAlreadyExistsException used on opensource projects

Example 6 with TopicAlreadyExistsException

use of co.cask.cdap.api.messaging.TopicAlreadyExistsException in project cdap by caskdata.

the class MetadataTableTest method testCRUD.

@Test
public void testCRUD() throws Exception {
    try (MetadataTable table = createMetadataTable()) {
        TopicId topicId = NamespaceId.DEFAULT.topic("topic");
        // Update a non-existing topic should fail.
        try {
            table.updateTopic(new TopicMetadata(topicId, "ttl", 10));
            Assert.fail("Expected TopicNotFoundException");
        } catch (TopicNotFoundException e) {
        // Expected
        }
        // Create a topic and validate
        table.createTopic(new TopicMetadata(topicId, "ttl", 10));
        Assert.assertEquals(10, table.getMetadata(topicId).getTTL());
        // Update the property and validate
        table.updateTopic(new TopicMetadata(topicId, "ttl", 30));
        Assert.assertEquals(30, table.getMetadata(topicId).getTTL());
        // Create the same topic again should fail
        try {
            table.createTopic(new TopicMetadata(topicId, "ttl", 10));
            Assert.fail("Expected TopicAlreadyExistsException");
        } catch (TopicAlreadyExistsException e) {
        // Expected
        }
        // It shouldn't affect the topic at all if creation failed
        Assert.assertEquals(30, table.getMetadata(topicId).getTTL());
        // Delete the topic
        table.deleteTopic(topicId);
        try {
            table.getMetadata(topicId);
            Assert.fail("Expected TopicNotFoundException");
        } catch (TopicNotFoundException e) {
        // Expected
        }
        // Delete again should raise a TopicNotFoundException
        try {
            table.deleteTopic(topicId);
            Assert.fail("Expected TopicNotFoundException");
        } catch (TopicNotFoundException e) {
        // Expected
        }
    }
}