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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.kafka.streams.processor.internals;
import org.apache.kafka.streams.KeyValue;
import org.apache.kafka.streams.kstream.Windowed;
import org.apache.kafka.streams.processor.ProcessorContext;
import org.apache.kafka.streams.processor.StateStore;
import org.apache.kafka.streams.processor.StateStoreContext;
import org.apache.kafka.streams.state.KeyValueIterator;
import org.apache.kafka.streams.state.KeyValueStore;
import org.apache.kafka.streams.state.SessionStore;
import org.apache.kafka.streams.state.TimestampedKeyValueStore;
import org.apache.kafka.streams.state.TimestampedWindowStore;
import org.apache.kafka.streams.state.ValueAndTimestamp;
import org.apache.kafka.streams.state.WindowStore;
import org.apache.kafka.streams.state.WindowStoreIterator;
import org.apache.kafka.streams.state.internals.WrappedStateStore;
import java.util.List;
abstract class AbstractReadWriteDecorator extends WrappedStateStore {
static final String ERROR_MESSAGE = "This method may only be called by Kafka Streams";
private AbstractReadWriteDecorator(final T inner) {
super(inner);
}
@Deprecated
@Override
public void init(final ProcessorContext context,
final StateStore root) {
throw new UnsupportedOperationException(ERROR_MESSAGE);
}
@Override
public void init(final StateStoreContext context,
final StateStore root) {
throw new UnsupportedOperationException(ERROR_MESSAGE);
}
@Override
public void close() {
throw new UnsupportedOperationException(ERROR_MESSAGE);
}
static StateStore getReadWriteStore(final StateStore store) {
if (store instanceof TimestampedKeyValueStore) {
return new TimestampedKeyValueStoreReadWriteDecorator<>((TimestampedKeyValueStore) store);
} else if (store instanceof KeyValueStore) {
return new KeyValueStoreReadWriteDecorator<>((KeyValueStore) store);
} else if (store instanceof TimestampedWindowStore) {
return new TimestampedWindowStoreReadWriteDecorator<>((TimestampedWindowStore) store);
} else if (store instanceof WindowStore) {
return new WindowStoreReadWriteDecorator<>((WindowStore) store);
} else if (store instanceof SessionStore) {
return new SessionStoreReadWriteDecorator<>((SessionStore) store);
} else {
return store;
}
}
static class KeyValueStoreReadWriteDecorator
extends AbstractReadWriteDecorator, K, V>
implements KeyValueStore {
KeyValueStoreReadWriteDecorator(final KeyValueStore inner) {
super(inner);
}
@Override
public V get(final K key) {
return wrapped().get(key);
}
@Override
public KeyValueIterator range(final K from,
final K to) {
return wrapped().range(from, to);
}
@Override
public KeyValueIterator reverseRange(final K from,
final K to) {
return wrapped().reverseRange(from, to);
}
@Override
public KeyValueIterator all() {
return wrapped().all();
}
@Override
public KeyValueIterator reverseAll() {
return wrapped().reverseAll();
}
@Override
public long approximateNumEntries() {
return wrapped().approximateNumEntries();
}
@Override
public void put(final K key,
final V value) {
wrapped().put(key, value);
}
@Override
public V putIfAbsent(final K key,
final V value) {
return wrapped().putIfAbsent(key, value);
}
@Override
public void putAll(final List> entries) {
wrapped().putAll(entries);
}
@Override
public V delete(final K key) {
return wrapped().delete(key);
}
}
static class TimestampedKeyValueStoreReadWriteDecorator
extends KeyValueStoreReadWriteDecorator>
implements TimestampedKeyValueStore {
TimestampedKeyValueStoreReadWriteDecorator(final TimestampedKeyValueStore inner) {
super(inner);
}
}
static class WindowStoreReadWriteDecorator
extends AbstractReadWriteDecorator, K, V>
implements WindowStore {
WindowStoreReadWriteDecorator(final WindowStore inner) {
super(inner);
}
@Deprecated
@Override
public void put(final K key,
final V value) {
wrapped().put(key, value);
}
@Override
public void put(final K key,
final V value,
final long windowStartTimestamp) {
wrapped().put(key, value, windowStartTimestamp);
}
@Override
public V fetch(final K key,
final long time) {
return wrapped().fetch(key, time);
}
@SuppressWarnings("deprecation") // note, this method must be kept if super#fetch(...) is removed
@Override
public WindowStoreIterator fetch(final K key,
final long timeFrom,
final long timeTo) {
return wrapped().fetch(key, timeFrom, timeTo);
}
@Override
public WindowStoreIterator backwardFetch(final K key,
final long timeFrom,
final long timeTo) {
return wrapped().backwardFetch(key, timeFrom, timeTo);
}
@SuppressWarnings("deprecation") // note, this method must be kept if super#fetch(...) is removed
@Override
public KeyValueIterator, V> fetch(final K keyFrom,
final K keyTo,
final long timeFrom,
final long timeTo) {
return wrapped().fetch(keyFrom, keyTo, timeFrom, timeTo);
}
@Override
public KeyValueIterator, V> backwardFetch(final K keyFrom,
final K keyTo,
final long timeFrom,
final long timeTo) {
return wrapped().backwardFetch(keyFrom, keyTo, timeFrom, timeTo);
}
@SuppressWarnings("deprecation") // note, this method must be kept if super#fetch(...) is removed
@Override
public KeyValueIterator, V> fetchAll(final long timeFrom,
final long timeTo) {
return wrapped().fetchAll(timeFrom, timeTo);
}
@Override
public KeyValueIterator, V> backwardFetchAll(final long timeFrom,
final long timeTo) {
return wrapped().backwardFetchAll(timeFrom, timeTo);
}
@Override
public KeyValueIterator, V> all() {
return wrapped().all();
}
@Override
public KeyValueIterator, V> backwardAll() {
return wrapped().backwardAll();
}
}
static class TimestampedWindowStoreReadWriteDecorator
extends WindowStoreReadWriteDecorator>
implements TimestampedWindowStore {
TimestampedWindowStoreReadWriteDecorator(final TimestampedWindowStore inner) {
super(inner);
}
}
static class SessionStoreReadWriteDecorator
extends AbstractReadWriteDecorator, K, AGG>
implements SessionStore {
SessionStoreReadWriteDecorator(final SessionStore inner) {
super(inner);
}
@Override
public KeyValueIterator, AGG> findSessions(final K key,
final long earliestSessionEndTime,
final long latestSessionStartTime) {
return wrapped().findSessions(key, earliestSessionEndTime, latestSessionStartTime);
}
@Override
public KeyValueIterator, AGG> findSessions(final K keyFrom,
final K keyTo,
final long earliestSessionEndTime,
final long latestSessionStartTime) {
return wrapped().findSessions(keyFrom, keyTo, earliestSessionEndTime, latestSessionStartTime);
}
@Override
public void remove(final Windowed sessionKey) {
wrapped().remove(sessionKey);
}
@Override
public void put(final Windowed sessionKey,
final AGG aggregate) {
wrapped().put(sessionKey, aggregate);
}
@Override
public AGG fetchSession(final K key,
final long startTime,
final long endTime) {
return wrapped().fetchSession(key, startTime, endTime);
}
@Override
public KeyValueIterator, AGG> fetch(final K key) {
return wrapped().fetch(key);
}
@Override
public KeyValueIterator, AGG> fetch(final K from,
final K to) {
return wrapped().fetch(from, to);
}
}
}
