/*
* 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.flink.migration.runtime.state.memory;
import org.apache.flink.migration.runtime.state.AbstractCloseableHandle;
import org.apache.flink.migration.runtime.state.StateHandle;
import org.apache.flink.migration.runtime.state.StreamStateHandle;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
/**
* @deprecated Internal class for savepoint backwards compatibility. Don't use for other purposes.
*/
@Deprecated
@SuppressWarnings("deprecation")
public final class ByteStreamStateHandle extends AbstractCloseableHandle implements StreamStateHandle {
private static final long serialVersionUID = -5280226231200217594L;
/** the state data */
private final byte[] data;
/**
* Creates a new ByteStreamStateHandle containing the given data.
*
* @param data The state data.
*/
public ByteStreamStateHandle(byte[] data) {
this.data = data;
}
@Override
public InputStream getState(ClassLoader userCodeClassLoader) throws Exception {
ensureNotClosed();
ByteArrayInputStream stream = new ByteArrayInputStream(data);
registerCloseable(stream);
return stream;
}
@Override
public void discardState() {}
@Override
public long getStateSize() {
return data.length;
}
@Override
public <T extends Serializable> StateHandle<T> toSerializableHandle() {
SerializedStateHandle<T> serializableHandle = new SerializedStateHandle<T>(data);
// forward the closed status
if (isClosed()) {
try {
serializableHandle.close();
} catch (IOException e) {
// should not happen on a fresh handle, but forward anyways
throw new RuntimeException(e);
}
}
return serializableHandle;
}
public byte[] getData() {
return data;
}
}