org.apache.kafka.streams.kstream.internals.suppress.TimeDefinitions Maven / Gradle / Ivy
/*
* 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.kafka.streams.kstream.internals.suppress;
import org.apache.kafka.streams.kstream.Windowed;
import org.apache.kafka.streams.processor.ProcessorContext;
final class TimeDefinitions {
private TimeDefinitions() {}
enum TimeDefinitionType {
RECORD_TIME, WINDOW_END_TIME
}
/**
* This interface should never be instantiated outside of this class.
*/
interface TimeDefinition {
long time(final ProcessorContext context, final K key);
TimeDefinitionType type();
}
public static class RecordTimeDefinition implements TimeDefinition {
private static final RecordTimeDefinition INSTANCE = new RecordTimeDefinition();
private RecordTimeDefinition() {}
@SuppressWarnings("unchecked")
public static RecordTimeDefinition instance() {
return RecordTimeDefinition.INSTANCE;
}
@Override
public long time(final ProcessorContext context, final K key) {
return context.timestamp();
}
@Override
public TimeDefinitionType type() {
return TimeDefinitionType.RECORD_TIME;
}
}
public static class WindowEndTimeDefinition implements TimeDefinition {
private static final WindowEndTimeDefinition INSTANCE = new WindowEndTimeDefinition();
private WindowEndTimeDefinition() {}
@SuppressWarnings("unchecked")
public static WindowEndTimeDefinition instance() {
return WindowEndTimeDefinition.INSTANCE;
}
@Override
public long time(final ProcessorContext context, final K key) {
return key.window().end();
}
@Override
public TimeDefinitionType type() {
return TimeDefinitionType.WINDOW_END_TIME;
}
}
}