| /** |
| * 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.storm.windowing; |
| |
| /** |
| * Context information that can be used by the eviction policy. |
| */ |
| public interface EvictionContext { |
| /** |
| * Returns the reference time that the eviction policy could use to evict the events. In the case of event time processing, this would |
| * be the watermark time. |
| * |
| * @return the reference time in millis |
| */ |
| Long getReferenceTime(); |
| |
| /** |
| * Returns the sliding count for count based windows. |
| * |
| * @return the sliding count |
| */ |
| Long getSlidingCount(); |
| |
| |
| /** |
| * Returns the sliding interval for time based windows. |
| * |
| * @return the sliding interval |
| */ |
| Long getSlidingInterval(); |
| |
| /** |
| * Returns the current count of events in the queue up to the reference time based on which count based evictions can be performed. |
| * |
| * @return the current count |
| */ |
| Long getCurrentCount(); |
| } |