org.apache.pulsar.client.impl.conf.ConfigurationDataUtils Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.client.impl.conf;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import org.apache.pulsar.shade.com.fasterxml.jackson.databind.DeserializationFeature;
import org.apache.pulsar.shade.com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.pulsar.common.util.ObjectMapperFactory;
/**
* Utils for loading configuration data.
*/
public final class ConfigurationDataUtils {
public static ObjectMapper create() {
ObjectMapper mapper = ObjectMapperFactory.create();
// forward compatibility for the properties may go away in the future
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, true);
mapper.configure(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL, false);
mapper.setSerializationInclusion(Include.NON_NULL);
return mapper;
}
private static final ObjectMapper MAPPER = create();
private ConfigurationDataUtils() {}
public static T loadData(Map config,
T existingData,
Class dataCls) {
try {
String existingConfigJson = MAPPER.writeValueAsString(existingData);
Map existingConfig = MAPPER.readValue(existingConfigJson, Map.class);
Map newConfig = new HashMap<>();
newConfig.putAll(existingConfig);
newConfig.putAll(config);
String configJson = MAPPER.writeValueAsString(newConfig);
return MAPPER.readValue(configJson, dataCls);
} catch (IOException e) {
throw new RuntimeException("Failed to load config into existing configuration data", e);
}
}
}