/
ClusterConfig.java
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/
ClusterConfig.java
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/*
* Copyright (c) 2017-2018 Bosch Software Innovations GmbH.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/index.php
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.services.utils.cluster.config;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.services.utils.config.KnownConfigValue;
/**
* Provides configuration settings for the Ditto cluster.
* <p>
* Java serialization is supported for {@code ClusterConfig}.
* </p>
*/
@Immutable
public interface ClusterConfig {
/**
* Returns the number of shards in a cluster.
*
* @return the number of shards.
*/
int getNumberOfShards();
/**
* An enumeration of the known config path expressions and their associated default values for
* {@code ClusterConfig}.
*/
enum ClusterConfigValue implements KnownConfigValue {
/**
* The number of shards in a cluster.
*/
NUMBER_OF_SHARDS("number-of-shards", 30);
private final String path;
private final Object defaultValue;
private ClusterConfigValue(final String thePath, final Object theDefaultValue) {
path = thePath;
defaultValue = theDefaultValue;
}
@Override
public String getConfigPath() {
return path;
}
@Override
public Object getDefaultValue() {
return defaultValue;
}
}
}