/
DefaultClusterConfig.java
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/
DefaultClusterConfig.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 java.io.Serializable;
import java.util.Objects;
import javax.annotation.Nullable;
import org.eclipse.ditto.services.utils.config.ConfigWithFallback;
import com.typesafe.config.Config;
/**
* This class is the default implementation of {@link ClusterConfig}.
*/
public final class DefaultClusterConfig implements ClusterConfig, Serializable {
private static final String CONFIG_PATH = "cluster";
private static final long serialVersionUID = 5940121378914735219L;
private final int numberOfShards;
private DefaultClusterConfig(final ConfigWithFallback config) {
numberOfShards = config.getInt(ClusterConfigValue.NUMBER_OF_SHARDS.getConfigPath());
}
/**
* Returns an instance of {@code DefaultClusterConfig} based on the settings of the specified Config.
*
* @param config is supposed to provide the settings of the cluster config at {@value #CONFIG_PATH}.
* @return the instance.
* @throws org.eclipse.ditto.services.utils.config.DittoConfigError if {@code config} is invalid.
*/
public static DefaultClusterConfig of(final Config config) {
return new DefaultClusterConfig(
ConfigWithFallback.newInstance(config, CONFIG_PATH, ClusterConfigValue.values()));
}
@Override
public int getNumberOfShards() {
return numberOfShards;
}
@Override
public boolean equals(@Nullable final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final DefaultClusterConfig that = (DefaultClusterConfig) o;
return numberOfShards == that.numberOfShards;
}
@Override
public int hashCode() {
return Objects.hash(numberOfShards);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
"numberOfShards=" + numberOfShards +
"]";
}
}