| /* |
| * 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.zookeeper; |
| |
| import java.util.List; |
| |
| import org.apache.camel.CamelExchangeException; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Message; |
| import org.apache.camel.NoSuchHeaderException; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.mock.MockEndpoint; |
| import org.apache.camel.component.zookeeper.NaturalSortComparator.Order; |
| import org.apache.camel.support.ExchangeHelper; |
| import org.apache.zookeeper.Watcher; |
| import org.apache.zookeeper.data.Stat; |
| import org.junit.Test; |
| |
| public class ConsumeChildrenTest extends ZooKeeperTestSupport { |
| |
| @Override |
| protected RouteBuilder[] createRouteBuilders() throws Exception { |
| return new RouteBuilder[] {new RouteBuilder() { |
| public void configure() throws Exception { |
| from("zookeeper://localhost:" + getServerPort() + "/grimm?repeat=true&listChildren=true") |
| .sort(body(), new NaturalSortComparator(Order.Descending)) |
| .to("mock:zookeeper-data"); |
| } |
| }}; |
| } |
| |
| @Test |
| public void shouldAwaitCreationAndGetDataNotification() throws Exception { |
| MockEndpoint mock = getMockEndpoint("mock:zookeeper-data"); |
| mock.expectedMessageCount(5); |
| |
| client.createPersistent("/grimm", "parent"); |
| client.create("/grimm/hansel", "child"); |
| client.create("/grimm/gretel", "child"); |
| client.delete("/grimm/hansel"); |
| client.delete("/grimm/gretel"); |
| |
| assertMockEndpointsSatisfied(); |
| |
| validateExchangesContainListings(mock, createChildListing(), createChildListing("hansel"), createChildListing("hansel", "gretel"), createChildListing("gretel"), |
| createChildListing()); |
| } |
| |
| private void validateExchangesContainListings(MockEndpoint mock, List<?>... expected) throws CamelExchangeException, NoSuchHeaderException { |
| int index = 0; |
| for (Exchange received : mock.getReceivedExchanges()) { |
| Watcher.Event.EventType expectedEvent; |
| if (index == 0) { |
| expectedEvent = Watcher.Event.EventType.NodeCreated; |
| } else { |
| expectedEvent = Watcher.Event.EventType.NodeChildrenChanged; |
| } |
| List<?> actual = received.getIn().getMandatoryBody(List.class); |
| assertEquals(expected[index++], actual); |
| assertEquals(expectedEvent, ExchangeHelper.getMandatoryHeader(received, ZooKeeperMessage.ZOOKEEPER_EVENT_TYPE, Watcher.Event.EventType.class)); |
| validateChildrenCountChangesEachTime(mock); |
| } |
| } |
| |
| protected void validateChildrenCountChangesEachTime(MockEndpoint mock) { |
| int lastChildCount = -1; |
| List<Exchange> received = mock.getReceivedExchanges(); |
| for (int x = 0; x < received.size(); x++) { |
| Message zkm = mock.getReceivedExchanges().get(x).getIn(); |
| int childCount = ((Stat)zkm.getHeader(ZooKeeperMessage.ZOOKEEPER_STATISTICS)).getNumChildren(); |
| assertNotSame("Num of children did not change", lastChildCount, childCount); |
| lastChildCount = childCount; |
| } |
| } |
| } |