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Aerospike Java client interface to Aerospike database server

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/*
 * Copyright 2012-2020 Aerospike, Inc.
 *
 * Portions may be licensed to Aerospike, Inc. under one or more contributor
 * license agreements WHICH ARE COMPATIBLE WITH THE APACHE LICENSE, VERSION 2.0.
 *
 * 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 com.aerospike.client.async;

import com.aerospike.client.AerospikeException;
import com.aerospike.client.cluster.Cluster;
import com.aerospike.client.cluster.Node;
import com.aerospike.client.listener.RecordSequenceListener;
import com.aerospike.client.policy.ScanPolicy;
import com.aerospike.client.util.RandomShift;

public final class AsyncScanExecutor extends AsyncMultiExecutor {
	private final RecordSequenceListener listener;

	public AsyncScanExecutor(
		EventLoop eventLoop,
		Cluster cluster,
		ScanPolicy policy,
		RecordSequenceListener listener,
		String namespace,
		String setName,
		String[] binNames,
		Node[] nodes
	) {
		super(eventLoop, cluster);
		this.listener = listener;
		policy.validate();

		long taskId = RandomShift.instance().nextLong();

		// Create commands.
		AsyncScan[] tasks = new AsyncScan[nodes.length];
		int count = 0;
		boolean hasClusterStable = true;

		for (Node node : nodes) {
			if (! node.hasClusterStable()) {
				hasClusterStable = false;
			}
			tasks[count++] = new AsyncScan(this, node, policy, listener, namespace, setName, binNames, taskId);
		}

		// Dispatch commands to nodes.
		if (policy.failOnClusterChange && hasClusterStable) {
			executeValidate(tasks, policy.maxConcurrentNodes, namespace);
		}
		else {
			execute(tasks, policy.maxConcurrentNodes);
		}
	}

	protected void onSuccess() {
		listener.onSuccess();
	}

	protected void onFailure(AerospikeException ae) {
		listener.onFailure(ae);
	}
}