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/*
* Copyright 2017 Huawei Technologies Co., Ltd.
*
* 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.
*/
package org.onap.swagger.util;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.Properties;
/**
* Loads adapter ip and port.
*
*/
public class AdapterInfoUtil {
private static final Logger LOGGER = LoggerFactory.getLogger(AdapterInfoUtil.class);
private static final String SWAGGER = "swagger.properties";
private static final String SWAGGER_ADAPTER_PROP = "service-config-file-path";
private static final String HOST_IP = "ip";
private static final String HOST_PORT = "port";
private static final String CATALINA_BASE = "catalina.base";
private static AdapterInfoUtil util;
private String ip;
private String port;
private AdapterInfoUtil() {
loadJson();
}
/**
* Get AdapterInfoUtil instance.
*
* @return AdapterInfoUtil
*/
public static AdapterInfoUtil getInstance() {
if (util == null) {
util = new AdapterInfoUtil();
}
return util;
}
/**
* Get IP.
*
* @return string
*/
public String getIp() {
if (ip != null) {
return ip;
}
return "";
}
/**
* Get port.
*
* @return string
*/
public String getPort() {
if (port != null) {
return port;
}
return "";
}
/**
* Loads the json file from given service-config-file-path, if not then from class path.
*/
private void loadJson() {
LOGGER.info("Loading service json...");
InputStream is;
String jsonTxt = null;
try {
String catalinaDir = getAppRoot();
LOGGER.info("Catalina base dir = " + catalinaDir);
FileInputStream fin = new FileInputStream(
AdapterInfoUtil.class.getClassLoader().getResource(SWAGGER).getFile());
Properties properties = new Properties();
properties.load(fin);
String configFilePath = properties.getProperty(SWAGGER_ADAPTER_PROP);
LOGGER.info("adapterfile = " + configFilePath);
if (configFilePath == null || "".equals(configFilePath)) {
LOGGER.error(SWAGGER_ADAPTER_PROP + " is not set in swagger.properties. "
+ "Default ip and port will be considered.");
return;
}
File file = new File(configFilePath);
if (file.exists()) {
LOGGER.info("Loading using given path...");
is = new FileInputStream(configFilePath);
} else {
is = this.getClass().getResourceAsStream(configFilePath);
if (is != null) {
LOGGER.info("Loading using classpath...");
is = new FileInputStream(
AdapterInfoUtil.class.getClassLoader().getResource(configFilePath).getFile());
} else {
LOGGER.info("Loading using relative path...");
if (!configFilePath.startsWith(File.separator)) {
configFilePath = File.separator + configFilePath;
}
configFilePath = catalinaDir + configFilePath;
file = new File(configFilePath);
if (file.exists()) {
is = new FileInputStream(new File(configFilePath));
} else {
LOGGER.error(SWAGGER_ADAPTER_PROP + " is incorrect in swagger.properties. "
+ "Default ip and port will be considered.");
return;
}
}
}
jsonTxt = IOUtils.toString(is);
LOGGER.info("jsonTxt = " + jsonTxt);
} catch (FileNotFoundException e) {
LOGGER.error("File Exception", e);
} catch (IOException e) {
LOGGER.error("File Exception", e);
}
if (jsonTxt != null) {
JSONObject temp = JSONObject.fromObject(jsonTxt);
if (temp != null) {
Iterator it = temp.keys();
while (it.hasNext()) {
String key = (String) it.next();
if (key.endsWith("nodes")) {
JSONArray lineItems = (JSONArray) temp.get(key);
for (Object o : lineItems) {
JSONObject jsonLineItem = (JSONObject) o;
String ip1 = jsonLineItem.getString(HOST_IP);
String port1 = jsonLineItem.getString(HOST_PORT);
if (ip1 != null && port1 != null) {
this.ip = ip1;
this.port = port1;
}
}
}
}
}
}
}
/**
* Read catalina base.
*
* @return String
*/
public String getAppRoot() {
String appRoot;
appRoot = System.getProperty(CATALINA_BASE);
if (appRoot != null) {
appRoot = getCanonicalPath(appRoot);
}
return appRoot;
}
/**
* Get canonical path.
*
* @param inPath
* string
* @return string
*/
private String getCanonicalPath(String inPath) {
String path = null;
try {
if (inPath != null) {
File file = new File(inPath);
path = file.getCanonicalPath();
}
} catch (IOException e) {
LOGGER.error("IOException", e);
}
return path;
}
}
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