FailoverManager.java

/** 
 *  Copyright (c) 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 org.reveno.atp.core.api;

import org.reveno.atp.core.api.channel.Buffer;

import java.util.List;
import java.util.function.Consumer;

public interface FailoverManager {

	default boolean isSingleNode() {
		return false;
	}
	
	boolean isMaster();
	
	boolean isBlocked();


	void onReplicationMessage(Consumer<List<Object>> failoverHandler);
	
	void addOnBlocked(Runnable handler);
	
	void addOnUnblocked(Runnable handler);
	
	
	boolean replicate(Consumer<Buffer> bufferWriter);

	long unprocessedCount();

	void processPendingMessages();
}