| /* |
| * 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.solr.cloud; |
| |
| import java.lang.invoke.MethodHandles; |
| |
| import java.util.Set; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.solr.SolrTestCaseJ4; |
| import org.apache.solr.client.solrj.embedded.JettySolrRunner; |
| import org.apache.solr.client.solrj.request.CollectionAdminRequest; |
| import org.apache.solr.common.cloud.CollectionStatePredicate; |
| import org.apache.solr.common.cloud.DocCollection; |
| import org.apache.solr.common.util.ExecutorUtil; |
| import org.apache.solr.util.DefaultSolrThreadFactory; |
| |
| import static org.apache.solr.cloud.SolrCloudTestCase.clusterShape; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class TestWaitForStateWithJettyShutdowns extends SolrTestCaseJ4 { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| public void testWaitForStateAfterShutDown() throws Exception { |
| final String col_name = "test_col"; |
| final MiniSolrCloudCluster cluster = new MiniSolrCloudCluster |
| (1, createTempDir(), buildJettyConfig("/solr")); |
| try { |
| log.info("Create our collection"); |
| CollectionAdminRequest.createCollection(col_name, "_default", 1, 1).process(cluster.getSolrClient()); |
| |
| log.info("Sanity check that our collection has come online"); |
| cluster.getSolrClient().waitForState(col_name, 30, TimeUnit.SECONDS, clusterShape(1, 1)); |
| |
| log.info("Shutdown 1 node"); |
| final JettySolrRunner nodeToStop = cluster.getJettySolrRunner(0); |
| nodeToStop.stop(); |
| log.info("Wait to confirm our node is fully shutdown"); |
| cluster.waitForJettyToStop(nodeToStop); |
| |
| // now that we're confident that node has stoped, check if a waitForState |
| // call will detect the missing replica -- shouldn't need long wait times (we know it's down)... |
| log.info("Now check if waitForState will recognize we already have the exepcted state"); |
| cluster.getSolrClient().waitForState(col_name, 500, TimeUnit.MILLISECONDS, clusterShape(1, 0)); |
| |
| |
| } finally { |
| cluster.shutdown(); |
| } |
| } |
| |
| public void testWaitForStateBeforeShutDown() throws Exception { |
| final String col_name = "test_col"; |
| final ExecutorService executor = ExecutorUtil.newMDCAwareFixedThreadPool |
| (1, new DefaultSolrThreadFactory("background_executor")); |
| final MiniSolrCloudCluster cluster = new MiniSolrCloudCluster |
| (1, createTempDir(), buildJettyConfig("/solr")); |
| try { |
| log.info("Create our collection"); |
| CollectionAdminRequest.createCollection(col_name, "_default", 1, 1).process(cluster.getSolrClient()); |
| |
| log.info("Sanity check that our collection has come online"); |
| cluster.getSolrClient().waitForState(col_name, 30, TimeUnit.SECONDS, |
| SolrCloudTestCase.clusterShape(1, 1)); |
| |
| |
| // HACK implementation detail... |
| // |
| // we know that in the current implementation, waitForState invokes the predicate twice |
| // independently of the current state of the collection and/or wether the predicate succeeds. |
| // If this implementation detail changes, (ie: so that it's only invoked once) |
| // then this number needs to change -- but the test fundementally depends on the implementation |
| // calling the predicate at least once, which should also be neccessary for any future impl |
| // (to verify that it didn't "miss" the state change when creating the watcher) |
| final CountDownLatch latch = new CountDownLatch(2); |
| |
| final Future<?> backgroundWaitForState = executor.submit |
| (() -> { |
| try { |
| cluster.getSolrClient().waitForState(col_name, 180, TimeUnit.SECONDS, |
| new LatchCountingPredicateWrapper(latch, |
| clusterShape(1, 0))); |
| } catch (Exception e) { |
| log.error("background thread got exception", e); |
| throw new RuntimeException(e); |
| } |
| return; |
| }, null); |
| |
| log.info("Awaiting latch..."); |
| if (! latch.await(120, TimeUnit.SECONDS)) { |
| fail("timed out Waiting a ridiculous amount of time for the waitForState latch -- did impl change?"); |
| } |
| |
| log.info("Shutdown 1 node"); |
| final JettySolrRunner nodeToStop = cluster.getJettySolrRunner(0); |
| nodeToStop.stop(); |
| log.info("Wait to confirm our node is fully shutdown"); |
| cluster.waitForJettyToStop(nodeToStop); |
| |
| // now that we're confident that node has stoped, check if a waitForState |
| // call will detect the missing replica -- shouldn't need long wait times... |
| log.info("Checking Future result to see if waitForState finished successfully"); |
| try { |
| backgroundWaitForState.get(); |
| } catch (ExecutionException e) { |
| log.error("background waitForState exception", e); |
| throw e; |
| } |
| |
| } finally { |
| ExecutorUtil.shutdownAndAwaitTermination(executor); |
| cluster.shutdown(); |
| } |
| } |
| |
| public final class LatchCountingPredicateWrapper implements CollectionStatePredicate { |
| private final CountDownLatch latch; |
| private final CollectionStatePredicate inner; |
| public LatchCountingPredicateWrapper(final CountDownLatch latch, final CollectionStatePredicate inner) { |
| this.latch = latch; |
| this.inner = inner; |
| } |
| public boolean matches(Set<String> liveNodes, DocCollection collectionState) { |
| final boolean result = inner.matches(liveNodes, collectionState); |
| log.info("Predicate called: result={}, (pre)latch={}, liveNodes={}, state={}", |
| result, latch.getCount(), liveNodes, collectionState); |
| latch.countDown(); |
| return result; |
| } |
| } |
| } |