/*
* 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.beam.runners.core;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.beam.sdk.state.State;
import org.apache.beam.sdk.state.WatermarkHoldState;
import org.joda.time.Instant;
/**
* Simulates state like {@link InMemoryStateInternals} and provides some extra helper methods.
*/
public class TestInMemoryStateInternals<K> extends InMemoryStateInternals<K> {
public TestInMemoryStateInternals(K key) {
super(key);
}
public Set<StateTag<?>> getTagsInUse(StateNamespace namespace) {
Set<StateTag<?>> inUse = new HashSet<>();
for (Map.Entry<StateTag<?>, State> entry :
inMemoryState.getTagsInUse(namespace).entrySet()) {
if (!isEmptyForTesting(entry.getValue())) {
inUse.add(entry.getKey());
}
}
return inUse;
}
public Set<StateNamespace> getNamespacesInUse() {
return inMemoryState.getNamespacesInUse();
}
/** Return the earliest output watermark hold in state, or null if none. */
public Instant earliestWatermarkHold() {
Instant minimum = null;
for (State storage : inMemoryState.values()) {
if (storage instanceof WatermarkHoldState) {
Instant hold = ((WatermarkHoldState) storage).read();
if (minimum == null || (hold != null && hold.isBefore(minimum))) {
minimum = hold;
}
}
}
return minimum;
}
}