/
DefaultStreamCacheConfig.java
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/
DefaultStreamCacheConfig.java
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/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.services.thingsearch.common.config;
import java.time.Duration;
import java.util.Objects;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.services.utils.cache.config.DefaultCacheConfig;
import org.eclipse.ditto.services.utils.config.ConfigWithFallback;
import com.typesafe.config.Config;
/**
* This class is the default implementation of {@link StreamCacheConfig}.
*/
@Immutable
public final class DefaultStreamCacheConfig implements StreamCacheConfig {
private static final String CONFIG_PATH = "cache";
private final String dispatcherName;
private final Duration retryDelay;
private final DefaultCacheConfig genericCacheConfig;
private DefaultStreamCacheConfig(final ConfigWithFallback streamCacheScopedConfig,
final DefaultCacheConfig genericCacheConfig) {
dispatcherName = streamCacheScopedConfig.getString(StreamCacheConfigValue.DISPATCHER_NAME.getConfigPath());
retryDelay = streamCacheScopedConfig.getDuration(StreamCacheConfigValue.RETRY_DELAY.getConfigPath());
this.genericCacheConfig = genericCacheConfig;
}
/**
* Returns an instance of DefaultStreamCacheConfig based on the settings of the specified Config.
*
* @param config is supposed to provide the settings of the stream cache config at {@value CONFIG_PATH}.
* @return the instance.
* @throws org.eclipse.ditto.services.utils.config.DittoConfigError if {@code config} is invalid.
*/
public static DefaultStreamCacheConfig of(final Config config) {
return new DefaultStreamCacheConfig(
ConfigWithFallback.newInstance(config, CONFIG_PATH, StreamCacheConfigValue.values()),
DefaultCacheConfig.of(config, CONFIG_PATH));
}
@Override
public String getDispatcherName() {
return dispatcherName;
}
@Override
public Duration getRetryDelay() {
return retryDelay;
}
@Override
public long getMaximumSize() {
return genericCacheConfig.getMaximumSize();
}
@Override
public Duration getExpireAfterWrite() {
return genericCacheConfig.getExpireAfterWrite();
}
@Override
public Duration getExpireAfterAccess() {
return genericCacheConfig.getExpireAfterAccess();
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final DefaultStreamCacheConfig that = (DefaultStreamCacheConfig) o;
return dispatcherName.equals(that.dispatcherName) &&
retryDelay.equals(that.retryDelay) &&
genericCacheConfig.equals(that.genericCacheConfig);
}
@Override
public int hashCode() {
return Objects.hash(dispatcherName, retryDelay, genericCacheConfig);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
"dispatcherName=" + dispatcherName +
", retryDelay=" + retryDelay +
", genericCacheConfig=" + genericCacheConfig +
"]";
}
}