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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* ================================================================================
* Licensed 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 "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.services.pmmapper.config;
import org.onap.dcaegen2.services.pmmapper.exceptions.CBSConfigException;
import org.onap.dcaegen2.services.pmmapper.exceptions.CBSServerError;
import org.onap.dcaegen2.services.pmmapper.exceptions.EnvironmentConfigException;
import org.onap.dcaegen2.services.pmmapper.exceptions.MapperConfigException;
import org.onap.dcaegen2.services.pmmapper.model.EnvironmentConfig;
import org.onap.dcaegen2.services.pmmapper.model.MapperConfig;
import org.onap.dcaegen2.services.pmmapper.utils.RequestSender;
import org.onap.dcaegen2.services.pmmapper.utils.RequiredFieldDeserializer;
import org.onap.logging.ref.slf4j.ONAPLogAdapter;
import org.onap.logging.ref.slf4j.ONAPLogConstants;
import org.slf4j.LoggerFactory;
import com.google.gson.GsonBuilder;
/**
* Handles the retrieval of the component spec-based PM-Mapper Configuration
* from DCAE.
*/
public class ConfigHandler {
private static final ONAPLogAdapter logger = new ONAPLogAdapter(LoggerFactory.getLogger(ConfigHandler.class));
private RequestSender sender;
/**
* Creates a ConfigHandler.
*/
public ConfigHandler() {
this(new RequestSender());
}
/**
* @see ConfigHandler#ConfigHandler()
* @param sender A RequestSender
*/
public ConfigHandler(RequestSender sender) {
this.sender = sender;
}
/**
* Retrieves PM-Mapper Configuration from DCAE's ConfigBinding Service.
*
* @throws EnvironmentConfigException
* @throws ConsulServerError
* @throws CBSConfigException
* @throws CBSServerError
* @throws MapperConfigException
*/
public MapperConfig getMapperConfig() throws EnvironmentConfigException,
CBSServerError, MapperConfigException {
String mapperConfigJson = "";
String cbsSocketAddress = EnvironmentConfig.getCBSHostName() + ":" + EnvironmentConfig.getCBSPort();
String requestURL = "http://" + cbsSocketAddress + "/service_component/" + EnvironmentConfig.getServiceName();
try {
logger.unwrap().info(ONAPLogConstants.Markers.ENTRY, "Fetching pm-mapper configuration from Configbinding Service");
mapperConfigJson = sender.send(requestURL);
} catch (Exception exception) {
throw new CBSServerError("Error connecting to Configbinding Service: ", exception);
} finally {
logger.unwrap().info(ONAPLogConstants.Markers.EXIT, "Received pm-mapper configuration from ConfigBinding Service:\n{}", mapperConfigJson);
}
return convertMapperConfigToObject(mapperConfigJson);
}
private MapperConfig convertMapperConfigToObject(String mapperConfigJson) throws MapperConfigException {
MapperConfig mapperConfig;
try {
mapperConfig = new GsonBuilder()
.registerTypeAdapter(MapperConfig.class, new RequiredFieldDeserializer<MapperConfig>())
.create()
.fromJson(mapperConfigJson, MapperConfig.class);
} catch (Exception exception) {
throw new MapperConfigException("Error parsing mapper configuration:\n{}" + mapperConfigJson, exception);
}
logger.unwrap().debug("Mapper configuration:\n{}", mapperConfig);
return mapperConfig;
}
}
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