| /* |
| * 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.flink.test.windowing.sessionwindows; |
| |
| import org.apache.flink.util.Preconditions; |
| |
| /** |
| * Configuration data for a session. |
| * |
| * @param <K> type of session key |
| * @param <E> type of session event |
| */ |
| public final class SessionConfiguration<K, E> { |
| |
| // key of the session |
| private final K key; |
| |
| // id of the session w.r.t. key |
| private final int sessionId; |
| |
| // allowed gap between events in one session |
| private final long gap; |
| |
| // minimum event time among all events in the session |
| private final long minEventTimestamp; |
| |
| // number of timely events in the session |
| private final int numberOfTimelyEvents; |
| |
| // factory that produces the events for the session from metadata such as timestamps |
| private final GeneratorEventFactory<K, E> eventFactory; |
| |
| public SessionConfiguration( |
| K key, |
| int sessionId, |
| long gap, |
| long minEventTimestamp, |
| int numberOfTimelyEvents, |
| GeneratorEventFactory<K, E> eventFactory) { |
| |
| Preconditions.checkNotNull(key); |
| Preconditions.checkNotNull(eventFactory); |
| Preconditions.checkArgument(numberOfTimelyEvents > 0); |
| Preconditions.checkArgument(gap > 0); |
| |
| this.key = key; |
| this.eventFactory = eventFactory; |
| this.sessionId = sessionId; |
| this.gap = gap; |
| this.numberOfTimelyEvents = numberOfTimelyEvents; |
| this.minEventTimestamp = minEventTimestamp; |
| } |
| |
| public K getKey() { |
| return key; |
| } |
| |
| public GeneratorEventFactory<K, E> getEventFactory() { |
| return eventFactory; |
| } |
| |
| public long getGap() { |
| return gap; |
| } |
| |
| public long getMinEventTimestamp() { |
| return minEventTimestamp; |
| } |
| |
| public int getNumberOfTimelyEvents() { |
| return numberOfTimelyEvents; |
| } |
| |
| public int getSessionId() { |
| return sessionId; |
| } |
| |
| public static <K, E> SessionConfiguration<K, E> of( |
| K key, |
| int sessionId, |
| long timeout, |
| long startTimestamp, |
| int numberOfEvents, |
| GeneratorEventFactory<K, E> eventFactory) { |
| return new SessionConfiguration<>( |
| key, sessionId, timeout, startTimestamp, numberOfEvents, eventFactory); |
| } |
| |
| @Override |
| public String toString() { |
| return "SessionConfiguration{" |
| + "key=" |
| + key |
| + ", sessionId=" |
| + sessionId |
| + ", gap=" |
| + gap |
| + ", minEventTimestamp=" |
| + minEventTimestamp |
| + ", numberOfTimelyEvents=" |
| + numberOfTimelyEvents |
| + ", eventFactory=" |
| + eventFactory |
| + '}'; |
| } |
| |
| public SessionConfiguration<K, E> getFollowupSessionConfiguration(long startTimestamp) { |
| return SessionConfiguration.of( |
| getKey(), |
| getSessionId() + 1, |
| getGap(), |
| startTimestamp, |
| getNumberOfTimelyEvents(), |
| getEventFactory()); |
| } |
| } |