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/*
* ============LICENSE_START=======================================================
* ONAP : DCAE
* ================================================================================
* Copyright 2018 TechMahindra
*=================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.universalvesadapter.service;
import java.net.URI;
import java.net.URISyntaxException;
import org.onap.universalvesadapter.configs.DiskRepoConfiguration;
import org.onap.universalvesadapter.exception.ConfigFileReadException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;
/**
* Implementation of {@code ConfigFileService} using disk repository.
*
* @author kmalbari
*
*/
@Component
public class DiskRepoConfigFileService implements ConfigFileService {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@Autowired
private DiskRepoConfiguration diskRepoConfiguration;
private RestTemplate restTemplate;
private URI uri = null;
/* (non-Javadoc)
* @see org.onap.universalvesadapter.service.ConfigFileService#readConfigFile(java.lang.String)
*/
@Override
public String readConfigFile(String fileName) throws ConfigFileReadException {
logger.debug("Reading config file for " + fileName);
if (null == uri) {
try {
uri = new URI(diskRepoConfiguration.getFileRepositoryUrl() + fileName);
logger.debug("Read URI for " + fileName);
} catch (URISyntaxException exception) {
throw new ConfigFileReadException("Unable to read config file for file "
+ fileName + "\n Reason : " + exception.getMessage(), exception);
}
}
logger.debug("Calling file repo service for URI" + uri);
ResponseEntity<String> fileDataEntity = getRestTemplate().getForEntity(uri, String.class);
logger.debug("Call completed successfully");
return fileDataEntity.getBody();
}
/**
* Instantiates the instance if null and returns it.
*
* @return {@code RestTemplate} instance
*/
private RestTemplate getRestTemplate(){
if (null == restTemplate) {
restTemplate = new RestTemplate();
}
return restTemplate;
}
}
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