/*
* Copyright 2015 the original author or authors.
*
* Licensed 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 io.atomix.manager.resource.internal;
import io.atomix.catalyst.buffer.BufferInput;
import io.atomix.catalyst.buffer.BufferOutput;
import io.atomix.catalyst.serializer.CatalystSerializable;
import io.atomix.catalyst.serializer.Serializer;
import io.atomix.copycat.Operation;
import io.atomix.resource.Resource;
/**
* Instance-level resource operation.
* <p>
* Instance operations are submitted by {@link Resource} instances to a specific state machine
* in the Atomix cluster. The operation {@link #resource()} identifies the state machine to which
* the operation is being submitted.
*
* @author <a href="http://github.com/kuujo">Jordan Halterman</a>
*/
public abstract class InstanceOperation<T extends Operation<U>, U> implements Operation<U>, CatalystSerializable {
protected long resource;
protected T operation;
protected InstanceOperation() {
}
protected InstanceOperation(long resource, T operation) {
this.resource = resource;
this.operation = operation;
}
/**
* Returns the resource ID.
*
* @return The resource ID.
*/
public long resource() {
return resource;
}
/**
* Returns the resource operation.
*
* @return The resource operation.
*/
public T operation() {
return operation;
}
@Override
public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
buffer.writeLong(resource);
serializer.writeObject(operation, buffer);
}
@Override
public void readObject(BufferInput<?> buffer, Serializer serializer) {
resource = buffer.readLong();
operation = serializer.readObject(buffer);
}
@Override
public String toString() {
return String.format("%s[resource=%s, operation=%s]", getClass().getSimpleName(), resource, operation.getClass().getSimpleName());
}
}