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/*-
* ============LICENSE_START=======================================================
* ONAP CLAMP
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights
* reserved.
* ================================================================================
* 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.policy.clamp.clds.config;
import java.io.IOException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;
/**
* Holds Clamp properties and add some functionalities.
*/
@Component
public class ClampProperties {
@Autowired
private ApplicationContext appContext;
@Autowired
private Environment env;
public static final String CONFIG_PREFIX = "clamp.config.";
/**
* get property value.
*
* @param key The first key
* @return The string with the value
*/
public String getStringValue(String key) {
return env.getProperty(CONFIG_PREFIX + key);
}
/**
* get property value for a combo key (key1 + "." + key2). If not found just use
* key1.
*
* @param key1 The first key
* @param key2 The second key after a dot
* @return The string with the value
*/
public String getStringValue(String key1, String key2) {
String value = getStringValue(key1 + "." + key2);
if (value == null || value.length() == 0) {
value = getStringValue(key1);
}
return value;
}
/**
* Return the file content. The value obtained from the clds-reference file will
* be used as a filename.
*
* @param key The key that will be used to access the clds-reference file
* @return File content in String
* @throws IOException In case of issues with the JSON parser
*/
public String getFileContent(String key) throws IOException {
String fileReference = getStringValue(key);
return (fileReference != null) ? getFileContentFromPath(fileReference) : null;
}
/**
* Return the file content. First try with combo key (key1 + "." + key2),
* otherwise default to just key1. The value obtained from the clds-reference
* file will be used as a filename.
*
* @param key1 The first key
* @param key2 The second key after a dot
* @return File content in String
* @throws IOException In case of issues with the JSON parser
*/
public String getFileContent(String key1, String key2) throws IOException {
String fileReference = getStringValue(key1, key2);
return (fileReference != null) ? getFileContentFromPath(fileReference) : null;
}
private String getFileContentFromPath(String filepath) throws IOException {
URL url = appContext.getResource(filepath).getURL();
return IOUtils.toString(url, StandardCharsets.UTF_8);
}
}
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