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Java implementation of Raft Consensus, this module contains only the core algorithm, and does not have any dependency except Java SE 8, for interface implementations that required by this module, please checkout jraft-ext module

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/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  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 net.data.technology.jraft;

public interface ServerStateManager {

    /**
     * Load cluster configuration for this server
     * @return the cluster configuration, never be null
     */
    public ClusterConfiguration loadClusterConfiguration();

    /**
     * Save the cluster configuration
     * @param configuration cluster configuration to save
     */
    public void saveClusterConfiguration(ClusterConfiguration configuration);

    /**
     * Save the server state
     * @param serverState server state to persist
     */
    public void persistState(ServerState serverState);

    /**
     * Load server state
     * @return the server state, never be null
     */
    public ServerState readState();

    /**
     * Load the log store for current server
     * @return the log store, never be null
     */
    public SequentialLogStore loadLogStore();

    /**
     * Get current server id
     * @return server id for this server
     */
    public int getServerId();
}