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StatisticsConfig.java
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StatisticsConfig.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.gateway.service.proxy.config;
import java.time.Duration;
import java.util.Collections;
import java.util.List;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.internal.utils.config.KnownConfigValue;
import org.eclipse.ditto.internal.utils.config.ScopedConfig;
import com.typesafe.config.Config;
import org.apache.pekko.actor.ActorContext;
/**
* Provides configuration settings for the statistics actor.
*/
@Immutable
public interface StatisticsConfig {
/**
* Returns the configured timeout when asking other cluster members for information.
*
* @return the ask-timeout.
*/
Duration getAskTimeout();
/**
* Returns the configured interval for updating the public statistics.
*
* @return the update-interval.
*/
Duration getUpdateInterval();
/**
* Returns the configured lifetime of statistics details.
*
* @return the lifetime.
*/
Duration getDetailsExpireAfter();
/**
* Returns the configuration settings of shards for which statistics are reported..
*
* @return the config.
*/
List<StatisticsShardConfig> getShards();
/**
* Returns an instance of {@code StatisticsConfig} based on the settings of the actor system.
*
* @param context any actor context.
* @return the instance.
* @throws org.eclipse.ditto.internal.utils.config.DittoConfigError if {@code config} is invalid.
*/
static StatisticsConfig forActor(final ActorContext context) {
final Config systemConfig = context.system().settings().config();
final String configPath = String.format("%s.%s", ScopedConfig.DITTO_SCOPE, "gateway");
return DefaultStatisticsConfig.of(systemConfig.getConfig(configPath));
}
/**
* An enumeration of the known config path expressions and their associated default values.
*/
enum ConfigValues implements KnownConfigValue {
/**
* Configuration for ask timeout.
*/
ASK_TIMEOUT("ask-timeout", Duration.ofSeconds(5L)),
/**
* Configuration for update interval of public endpoint.
*/
UPDATE_INTERVAL("update-interval", Duration.ofSeconds(15L)),
/**
* Configuration for expiry of statistics details.
*/
DETAILS_EXPIRE_AFTER("details-expire-after", Duration.ofSeconds(1L)),
/**
* Configuration for individual shards.
*/
SHARDS("shards", Collections.emptyList());
private final String path;
private final Object defaultValue;
ConfigValues(final String thePath, final Object theDefaultValue) {
path = thePath;
defaultValue = theDefaultValue;
}
@Override
public Object getDefaultValue() {
return defaultValue;
}
@Override
public String getConfigPath() {
return path;
}
}
}