org.apache.kafka.connect.storage.OffsetStorageReaderImpl 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.connect.storage;
import org.apache.kafka.connect.data.SchemaAndValue;
import org.apache.kafka.connect.errors.ConnectException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* Implementation of OffsetStorageReader. Unlike OffsetStorageWriter which is implemented
* directly, the interface is only separate from this implementation because it needs to be
* included in the public API package.
*/
public class OffsetStorageReaderImpl implements OffsetStorageReader {
private static final Logger log = LoggerFactory.getLogger(OffsetStorageReaderImpl.class);
private final OffsetBackingStore backingStore;
private final String namespace;
private final Converter keyConverter;
private final Converter valueConverter;
public OffsetStorageReaderImpl(OffsetBackingStore backingStore, String namespace,
Converter keyConverter, Converter valueConverter) {
this.backingStore = backingStore;
this.namespace = namespace;
this.keyConverter = keyConverter;
this.valueConverter = valueConverter;
}
@Override
public Map offset(Map partition) {
return offsets(Collections.singletonList(partition)).get(partition);
}
@Override
@SuppressWarnings("unchecked")
public Map