| /* |
| * 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.autoscaling; |
| |
| import java.io.IOException; |
| import java.lang.invoke.MethodHandles; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Map; |
| |
| import org.apache.solr.client.solrj.cloud.DistributedQueue; |
| import org.apache.solr.client.solrj.cloud.SolrCloudManager; |
| import org.apache.solr.cloud.Stats; |
| import org.apache.solr.common.AlreadyClosedException; |
| import org.apache.solr.common.cloud.ZkStateReader; |
| import org.apache.solr.common.util.Utils; |
| import org.apache.solr.common.util.TimeSource; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * |
| * @deprecated to be removed in Solr 9.0 (see SOLR-14656) |
| */ |
| public class TriggerEventQueue { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| public static final String ENQUEUE_TIME = "_enqueue_time_"; |
| public static final String DEQUEUE_TIME = "_dequeue_time_"; |
| |
| private final String triggerName; |
| private final TimeSource timeSource; |
| private final DistributedQueue delegate; |
| |
| public TriggerEventQueue(SolrCloudManager cloudManager, String triggerName, Stats stats) throws IOException { |
| // TODO: collect stats |
| this.delegate = cloudManager.getDistributedQueueFactory().makeQueue(ZkStateReader.SOLR_AUTOSCALING_EVENTS_PATH + "/" + triggerName); |
| this.triggerName = triggerName; |
| this.timeSource = cloudManager.getTimeSource(); |
| } |
| |
| public boolean offerEvent(TriggerEvent event) { |
| event.getProperties().put(ENQUEUE_TIME, timeSource.getTimeNs()); |
| try { |
| byte[] data = Utils.toJSON(event); |
| delegate.offer(data); |
| return true; |
| } catch (Exception e) { |
| log.warn("Exception adding event {} to queue {}", event, triggerName, e); |
| return false; |
| } |
| } |
| |
| public TriggerEvent peekEvent() { |
| byte[] data; |
| try { |
| while ((data = delegate.peek()) != null) { |
| if (data.length == 0) { |
| log.warn("ignoring empty data..."); |
| continue; |
| } |
| try { |
| @SuppressWarnings({"unchecked"}) |
| Map<String, Object> map = (Map<String, Object>) Utils.fromJSON(data); |
| return fromMap(map); |
| } catch (Exception e) { |
| log.warn("Invalid event data, ignoring: {}", new String(data, StandardCharsets.UTF_8)); |
| continue; |
| } |
| } |
| } |
| catch (AlreadyClosedException e) { |
| |
| } |
| catch (Exception e) { |
| log.warn("Exception peeking queue of trigger {}", triggerName, e); |
| } |
| return null; |
| } |
| |
| public TriggerEvent pollEvent() { |
| byte[] data; |
| try { |
| while ((data = delegate.poll()) != null) { |
| if (data.length == 0) { |
| log.warn("ignoring empty data..."); |
| continue; |
| } |
| try { |
| @SuppressWarnings({"unchecked"}) |
| Map<String, Object> map = (Map<String, Object>) Utils.fromJSON(data); |
| return fromMap(map); |
| } catch (Exception e) { |
| log.warn("Invalid event data, ignoring: {}", new String(data, StandardCharsets.UTF_8)); |
| continue; |
| } |
| } |
| } catch (Exception e) { |
| log.warn("Exception polling queue of trigger {}", triggerName, e); |
| } |
| return null; |
| } |
| |
| private TriggerEvent fromMap(Map<String, Object> map) { |
| TriggerEvent res = TriggerEvent.fromMap(map); |
| res.getProperties().put(DEQUEUE_TIME, timeSource.getTimeNs()); |
| return res; |
| } |
| } |