io.atomix.copycat.protocol.OperationRequest Maven / Gradle / Ivy

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/*
 * 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.copycat.protocol;

import io.atomix.catalyst.buffer.BufferInput;
import io.atomix.catalyst.buffer.BufferOutput;
import io.atomix.catalyst.serializer.Serializer;
import io.atomix.catalyst.util.Assert;
import io.atomix.copycat.Operation;

/**
 * Client operation request.
 * 
 * Operation requests are sent by clients to servers to execute operations on the replicated state
 * machine. Each operation request must be sequenced with a {@link #sequence()} number. All operations
 * will be applied to replicated state machines in the sequence in which they were sent by the client.
 * Sequence numbers must always be sequential, and in the event that an operation request fails, it must
 * be resent by the client.
 *
 * @author