org.apache.pulsar.common.functions.WindowConfig Maven / Gradle / Ivy
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* 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.pulsar.common.functions;
import lombok.Data;
import lombok.experimental.Accessors;
/**
* Configuration of a windowing function.
*/
@Data
@Accessors(chain = true)
public class WindowConfig {
public static final String WINDOW_CONFIG_KEY = "__WINDOWCONFIGS__";
private Integer windowLengthCount;
private Long windowLengthDurationMs;
private Integer slidingIntervalCount;
private Long slidingIntervalDurationMs;
private String lateDataTopic;
private Long maxLagMs;
private Long watermarkEmitIntervalMs;
private String timestampExtractorClassName;
private String actualWindowFunctionClassName;
private ProcessingGuarantees processingGuarantees;
/**
* This is a semantic option that windows can provide,
* forcing the semantics of the {@link FunctionConfig.ProcessingGuarantees} to be equal to MANUAL,
* and then letting the windows function handle the semantic timing by itself.
*/
public enum ProcessingGuarantees {
ATLEAST_ONCE,
ATMOST_ONCE
}
}