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/*******************************************************************************
* Copyright 2016-2017 ZTE, Inc. and others.
*
* 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.msb.apiroute.wrapper.util;
import java.util.regex.Pattern;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang3.StringUtils;
public class MicroServiceUtil {
public static final String PREFIX_PATH = "discover:microservices";
private static final Pattern SERVICE_KEY_REGEX_PATTERN =
Pattern.compile("discover:microservices:(?<servicename>[^:]+)(:(?<version>[^:]*))");
public static String getPrefixedKey(String... paths) {
StringBuffer sb = new StringBuffer();
sb.append(PREFIX_PATH);
for (int i = 0; i < paths.length; i++) {
sb.append(":");
sb.append(paths[i]);
}
return sb.toString();
}
public static String getServiceKey(String serviceName, String version) {
return getPrefixedKey(serviceName, version);
}
public static Pattern getServiceKeyRegexPattern() {
return SERVICE_KEY_REGEX_PATTERN;
}
public static String getRealIp(HttpServletRequest request) {
String ip = request.getHeader("X-Forwarded-For");
if (StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) {
// After the reverse proxy can have multiple IP value for many times, the first IP is
// the real IP
int index = ip.indexOf(",");
if (index != -1) {
return ip.substring(0, index);
} else {
return ip;
}
}
ip = request.getHeader("X-Real-IP");
if (StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) {
return ip;
}
return request.getRemoteAddr();
}
}
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