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/*
* ============LICENSE_START=======================================================
* ONAP : SDNC
* ================================================================================
* Copyright 2019 AMDOCS
*=================================================================================
* 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.sdnc.oam.datamigrator.common;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import org.onap.sdnc.oam.datamigrator.exceptions.RestconfException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.PasswordAuthentication;
import java.net.URL;
import java.util.Base64;
public class RestconfClient {
private HttpURLConnection httpConn = null;
private final String host ;
private final String user ;
private final String password ;
private static final String CONFIG_PATH = "/restconf/config/";
private static final String CONTENT_TYPE_JSON = "application/json";
private final Logger log = LoggerFactory.getLogger(RestconfClient.class);
public RestconfClient (String host , String user , String password){
this.host = host;
this.user = user;
this.password = password;
}
private class SdncAuthenticator extends Authenticator {
private final String user;
private final String passwd;
SdncAuthenticator(String user, String passwd) {
this.user = user;
this.passwd = passwd;
}
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, passwd.toCharArray());
}
}
public JsonObject get(String path) throws RestconfException {
String getResponse = send(path,"GET",CONTENT_TYPE_JSON,"");
JsonParser parser = new JsonParser();
return parser.parse(getResponse).getAsJsonObject();
}
public void put(String path, String data) throws RestconfException {
send(path,"PUT",CONTENT_TYPE_JSON, data );
}
private String send(String path,String method, String contentType, String msg) throws RestconfException {
Authenticator.setDefault(new SdncAuthenticator(user, password));
String url = host + CONFIG_PATH + path;
try {
URL sdncUrl = new URL(url);
log.info("SDNC url: " + url);
log.info("Method: " + method);
this.httpConn = (HttpURLConnection) sdncUrl.openConnection();
String authStr = user + ":" + password;
String encodedAuthStr = new String(Base64.getEncoder().encode(authStr.getBytes()));
httpConn.addRequestProperty("Authentication", "Basic " + encodedAuthStr);
httpConn.setRequestMethod(method);
httpConn.setRequestProperty("Content-Type", contentType);
httpConn.setRequestProperty("Accept", contentType);
httpConn.setDoInput(true);
httpConn.setDoOutput(true);
httpConn.setUseCaches(false);
if (httpConn instanceof HttpsURLConnection) {
HostnameVerifier hostnameVerifier = (hostname, session) -> true;
((HttpsURLConnection) httpConn).setHostnameVerifier(hostnameVerifier);
}
if (!method.equals("GET")) {
log.info("Request payload: " + msg);
httpConn.setRequestProperty("Content-Length", "" + msg.length());
DataOutputStream outStr = new DataOutputStream(httpConn.getOutputStream());
outStr.write(msg.getBytes());
outStr.close();
}
BufferedReader respRdr;
log.info("Response: " + httpConn.getResponseCode() + " " + httpConn.getResponseMessage());
if (httpConn.getResponseCode() < 300) {
respRdr = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
} else {
respRdr = new BufferedReader(new InputStreamReader(httpConn.getErrorStream()));
log.error("Error during restconf operation: "+ method + ". URL:" + sdncUrl.toString()+". Response:"+respRdr);
throw new RestconfException(httpConn.getResponseCode(),"Error during restconf operation: "+ method +". Response:"+respRdr);
}
StringBuilder respBuff = new StringBuilder();
String respLn;
while ((respLn = respRdr.readLine()) != null) {
respBuff.append(respLn).append("\n");
}
respRdr.close();
String respString = respBuff.toString();
log.info("Response body :\n" + respString);
return respString;
}catch (IOException e){
throw new RestconfException(500,e.getMessage(),e);
}finally {
if (httpConn != null) {
httpConn.disconnect();
}
}
}
}
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