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DefaultStreamConfig.java
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DefaultStreamConfig.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.thingsearch.service.common.config;
import java.time.Duration;
import java.util.Objects;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.internal.utils.cacheloaders.config.AskWithRetryConfig;
import org.eclipse.ditto.internal.utils.cacheloaders.config.DefaultAskWithRetryConfig;
import org.eclipse.ditto.internal.utils.config.ConfigWithFallback;
import com.typesafe.config.Config;
/**
* This class is the default implementation of {@link StreamConfig}.
*/
@Immutable
public final class DefaultStreamConfig implements StreamConfig {
private static final String CONFIG_PATH = "stream";
private static final String RETRIEVAL_CONFIG_PATH = "retrieval";
private static final String ASK_WITH_RETRY_CONFIG_PATH = "ask-with-retry";
private static final String POLICY_CACHE_CONFIG_PATH = "policy-cache";
private static final String THING_CACHE_CONFIG_PATH = "thing-cache";
private final int maxArraySize;
private final Duration writeInterval;
private final Duration thingDeletionTimeout;
private final AskWithRetryConfig askWithRetryConfig;
private final StreamStageConfig retrievalConfig;
private final PersistenceStreamConfig persistenceStreamConfig;
private final StreamCacheConfig policyCacheConfig;
private final StreamCacheConfig thingCacheConfig;
private DefaultStreamConfig(final ConfigWithFallback streamScopedConfig) {
maxArraySize = streamScopedConfig.getInt(StreamConfigValue.MAX_ARRAY_SIZE.getConfigPath());
writeInterval = streamScopedConfig.getNonNegativeDurationOrThrow(StreamConfigValue.WRITE_INTERVAL);
thingDeletionTimeout = streamScopedConfig.getNonNegativeDurationOrThrow(StreamConfigValue.THING_DELETION_TIMEOUT);
askWithRetryConfig = DefaultAskWithRetryConfig.of(streamScopedConfig, ASK_WITH_RETRY_CONFIG_PATH);
retrievalConfig = DefaultStreamStageConfig.getInstance(streamScopedConfig, RETRIEVAL_CONFIG_PATH);
persistenceStreamConfig = DefaultPersistenceStreamConfig.of(streamScopedConfig);
policyCacheConfig = DefaultStreamCacheConfig.of(streamScopedConfig, POLICY_CACHE_CONFIG_PATH);
thingCacheConfig = DefaultStreamCacheConfig.of(streamScopedConfig, THING_CACHE_CONFIG_PATH);
}
/**
* Returns an instance of DefaultStreamConfig based on the settings of the specified Config.
*
* @param config is supposed to provide the settings of the stream config at {@value CONFIG_PATH}.
* @return the instance.
* @throws org.eclipse.ditto.internal.utils.config.DittoConfigError if {@code config} is invalid.
*/
public static DefaultStreamConfig of(final Config config) {
return new DefaultStreamConfig(ConfigWithFallback.newInstance(config, CONFIG_PATH, StreamConfigValue.values()));
}
@Override
public int getMaxArraySize() {
return maxArraySize;
}
@Override
public Duration getWriteInterval() {
return writeInterval;
}
@Override
public Duration getThingDeletionTimeout() {
return thingDeletionTimeout;
}
@Override
public AskWithRetryConfig getAskWithRetryConfig() {
return askWithRetryConfig;
}
@Override
public StreamStageConfig getRetrievalConfig() {
return retrievalConfig;
}
@Override
public PersistenceStreamConfig getPersistenceConfig() {
return persistenceStreamConfig;
}
@Override
public StreamCacheConfig getPolicyCacheConfig() {
return policyCacheConfig;
}
@Override
public StreamCacheConfig getThingCacheConfig() {
return thingCacheConfig;
}
@Override
public boolean equals(@Nullable final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final DefaultStreamConfig that = (DefaultStreamConfig) o;
return maxArraySize == that.maxArraySize &&
writeInterval.equals(that.writeInterval) &&
thingDeletionTimeout.equals(that.thingDeletionTimeout) &&
askWithRetryConfig.equals(that.askWithRetryConfig) &&
retrievalConfig.equals(that.retrievalConfig) &&
persistenceStreamConfig.equals(that.persistenceStreamConfig) &&
policyCacheConfig.equals(that.policyCacheConfig) &&
thingCacheConfig.equals(that.thingCacheConfig);
}
@Override
public int hashCode() {
return Objects.hash(maxArraySize, writeInterval, askWithRetryConfig, retrievalConfig,
persistenceStreamConfig, policyCacheConfig, thingCacheConfig, thingDeletionTimeout);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
"maxArraySize=" + maxArraySize +
", writeInterval=" + writeInterval +
", thingDeletionTimeout=" + thingDeletionTimeout +
", askWithRetryConfig=" + askWithRetryConfig +
", retrievalConfig=" + retrievalConfig +
", persistenceStreamConfig=" + persistenceStreamConfig +
", policyCacheConfig=" + policyCacheConfig +
", thingCacheConfig=" + thingCacheConfig +
"]";
}
}