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/*-
* ============LICENSE_START=======================================================
* ONAP Policy Engine
* ================================================================================
* 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.admin;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.io.IOUtils;
import org.json.JSONObject;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.controller.CreateClosedLoopFaultController;
import org.onap.policy.controller.CreateDcaeMicroServiceController;
import org.onap.policy.controller.CreateFirewallController;
import org.onap.policy.controller.PolicyController;
import org.onap.policy.rest.XACMLRestProperties;
import org.onap.policy.rest.adapter.PolicyRestAdapter;
import org.onap.policy.rest.dao.CommonClassDao;
import org.onap.policy.rest.jpa.PolicyVersion;
import org.onap.policy.utils.PolicyUtils;
import org.onap.policy.xacml.api.XACMLErrorConstants;
import org.onap.portalsdk.core.controller.RestrictedBaseController;
import org.onap.portalsdk.core.web.support.UserUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.servlet.ModelAndView;
import com.att.research.xacml.util.XACMLProperties;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
@RestController
@RequestMapping("/")
public class PolicyRestController extends RestrictedBaseController{
private static final Logger policyLogger = FlexLogger.getLogger(PolicyRestController.class);
private static final String modal = "model";
private static final String importDictionary = "import_dictionary";
private static CommonClassDao commonClassDao;
public PolicyRestController(){
//default constructor
}
@Autowired
private PolicyRestController(CommonClassDao commonClassDao){
PolicyRestController.commonClassDao = commonClassDao;
}
public static CommonClassDao getCommonClassDao() {
return commonClassDao;
}
public static void setCommonClassDao(CommonClassDao commonClassDao) {
PolicyRestController.commonClassDao = commonClassDao;
}
@RequestMapping(value={"/policycreation/save_policy"}, method={RequestMethod.POST})
public void policyCreationController(HttpServletRequest request, HttpServletResponse response) {
String userId = UserUtils.getUserSession(request).getOrgUserId();
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
try{
JsonNode root = mapper.readTree(request.getReader());
policyLogger.info("****************************************Logging UserID while Create/Update Policy**************************************************");
policyLogger.info("UserId: " + userId + "Policy Data Object: "+ root.get(PolicyController.getPolicydata()).get("policy").toString());
policyLogger.info("***********************************************************************************************************************************");
PolicyRestAdapter policyData = mapper.readValue(root.get(PolicyController.getPolicydata()).get("policy").toString(), PolicyRestAdapter.class);
if("file".equals(root.get(PolicyController.getPolicydata()).get(modal).get("type").toString().replace("\"", ""))){
policyData.setEditPolicy(true);
}
if(root.get(PolicyController.getPolicydata()).get(modal).get("path").size() != 0){
String dirName = "";
for(int i = 0; i < root.get(PolicyController.getPolicydata()).get(modal).get("path").size(); i++){
dirName = dirName.replace("\"", "") + root.get(PolicyController.getPolicydata()).get(modal).get("path").get(i).toString().replace("\"", "") + File.separator;
}
if(policyData.isEditPolicy()){
policyData.setDomainDir(dirName.substring(0, dirName.lastIndexOf(File.separator)));
}else{
policyData.setDomainDir(dirName + root.get(PolicyController.getPolicydata()).get(modal).get("name").toString().replace("\"", ""));
}
}else{
String domain = root.get(PolicyController.getPolicydata()).get(modal).get("name").toString();
if(domain.contains("/")){
domain = domain.substring(0, domain.lastIndexOf('/')).replace("/", File.separator);
}
domain = domain.replace("\"", "");
policyData.setDomainDir(domain);
}
if(policyData.getConfigPolicyType() != null){
if("ClosedLoop_Fault".equalsIgnoreCase(policyData.getConfigPolicyType())){
policyData = new CreateClosedLoopFaultController().setDataToPolicyRestAdapter(policyData, root);
}else if("Firewall Config".equalsIgnoreCase(policyData.getConfigPolicyType())){
policyData = new CreateFirewallController().setDataToPolicyRestAdapter(policyData);
}else if("Micro Service".equalsIgnoreCase(policyData.getConfigPolicyType())){
policyData = new CreateDcaeMicroServiceController().setDataToPolicyRestAdapter(policyData, root);
}
}
policyData.setUserId(userId);
String result;
String body = PolicyUtils.objectToJsonString(policyData);
String uri = request.getRequestURI();
ResponseEntity<?> responseEntity = sendToPAP(body, uri, HttpMethod.POST);
if(responseEntity != null && responseEntity.getBody().equals(HttpServletResponse.SC_CONFLICT)){
result = "PolicyExists";
}else if(responseEntity != null){
result = responseEntity.getBody().toString();
String policyName = responseEntity.getHeaders().get("policyName").get(0);
if(policyData.isEditPolicy() && "success".equalsIgnoreCase(result)){
PolicyNotificationMail email = new PolicyNotificationMail();
String mode = "EditPolicy";
String watchPolicyName = policyName.replace(".xml", "");
String version = watchPolicyName.substring(watchPolicyName.lastIndexOf('.')+1);
watchPolicyName = watchPolicyName.substring(0, watchPolicyName.lastIndexOf('.')).replace(".", File.separator);
String policyVersionName = watchPolicyName.replace(".", File.separator);
watchPolicyName = watchPolicyName + "." + version + ".xml";
PolicyVersion entityItem = new PolicyVersion();
entityItem.setPolicyName(policyVersionName);
entityItem.setActiveVersion(Integer.parseInt(version));
entityItem.setModifiedBy(userId);
email.sendMail(entityItem, watchPolicyName, mode, commonClassDao);
}
}else{
result = "Response is null from PAP";
}
response.setCharacterEncoding(PolicyController.getCharacterencoding());
response.setContentType(PolicyController.getContenttype());
request.setCharacterEncoding(PolicyController.getCharacterencoding());
PrintWriter out = response.getWriter();
String responseString = mapper.writeValueAsString(result);
JSONObject j = new JSONObject("{policyData: " + responseString + "}");
out.write(j.toString());
}catch(Exception e){
policyLogger.error("Exception Occured while saving policy" , e);
}
}
private ResponseEntity<?> sendToPAP(String body, String requestURI, HttpMethod method){
String papUrl = PolicyController.getPapUrl();
String papID = XACMLProperties.getProperty(XACMLRestProperties.PROP_PAP_USERID);
String papPass = XACMLProperties.getProperty(XACMLRestProperties.PROP_PAP_PASS);
Base64.Encoder encoder = Base64.getEncoder();
String encoding = encoder.encodeToString((papID+":"+papPass).getBytes(StandardCharsets.UTF_8));
HttpHeaders headers = new HttpHeaders();
headers.set("Authorization", "Basic " + encoding);
headers.set("Content-Type", PolicyController.getContenttype());
RestTemplate restTemplate = new RestTemplate();
HttpEntity<?> requestEntity = new HttpEntity<>(body, headers);
ResponseEntity<?> result = null;
HttpClientErrorException exception = null;
String uri = requestURI;
if(uri.startsWith("/")){
uri = uri.substring(uri.indexOf('/')+1);
}
uri = "onap" + uri.substring(uri.indexOf('/'));
try{
result = restTemplate.exchange(papUrl + uri, method, requestEntity, String.class);
}catch(Exception e){
policyLogger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error while connecting to " + papUrl, e);
exception = new HttpClientErrorException(HttpStatus.INTERNAL_SERVER_ERROR, e.getMessage());
if("409 Conflict".equals(e.getMessage())){
return ResponseEntity.ok(HttpServletResponse.SC_CONFLICT);
}
}
if(exception != null && exception.getStatusCode()!=null){
if(exception.getStatusCode().equals(HttpStatus.UNAUTHORIZED)){
String message = XACMLErrorConstants.ERROR_PERMISSIONS +":"+exception.getStatusCode()+":" + "ERROR_AUTH_GET_PERM" ;
policyLogger.error(message);
}
if(exception.getStatusCode().equals(HttpStatus.BAD_REQUEST)){
String message = XACMLErrorConstants.ERROR_DATA_ISSUE + ":"+exception.getStatusCode()+":" + exception.getResponseBodyAsString();
policyLogger.error(message);
}
if(exception.getStatusCode().equals(HttpStatus.NOT_FOUND)){
String message = XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error while connecting to " + papUrl + exception;
policyLogger.error(message);
}
String message = XACMLErrorConstants.ERROR_PROCESS_FLOW + ":"+exception.getStatusCode()+":" + exception.getResponseBodyAsString();
policyLogger.error(message);
}
return result;
}
private String callPAP(HttpServletRequest request , String method, String uriValue){
String uri = uriValue;
String boundary = null;
String papUrl = PolicyController.getPapUrl();
String papID = XACMLProperties.getProperty(XACMLRestProperties.PROP_PAP_USERID);
String papPass = XACMLProperties.getProperty(XACMLRestProperties.PROP_PAP_PASS);
Base64.Encoder encoder = Base64.getEncoder();
String encoding = encoder.encodeToString((papID+":"+papPass).getBytes(StandardCharsets.UTF_8));
HttpHeaders headers = new HttpHeaders();
headers.set("Authorization", "Basic " + encoding);
headers.set("Content-Type", PolicyController.getContenttype());
HttpURLConnection connection = null;
List<FileItem> items;
FileItem item = null;
File file = null;
if(uri.contains(importDictionary)){
try {
items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
item = items.get(0);
file = new File(item.getName());
String newFile = file.toString();
uri = uri +"&dictionaryName="+newFile;
} catch (Exception e2) {
policyLogger.error("Exception Occured while calling PAP with import dictionary request"+e2);
}
}
try {
URL url = new URL(papUrl + uri);
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod(method);
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(false);
connection.setRequestProperty("Authorization", "Basic " + encoding);
connection.setDoOutput(true);
connection.setDoInput(true);
if(!uri.contains("searchPolicy?action=delete&")){
if(!(uri.endsWith("set_BRMSParamData") || uri.contains(importDictionary))){
connection.setRequestProperty("Content-Type",PolicyController.getContenttype());
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
JsonNode root = null;
try {
root = mapper.readTree(request.getReader());
}catch (Exception e1) {
policyLogger.error("Exception Occured while calling PAP"+e1);
}
ObjectMapper mapper1 = new ObjectMapper();
mapper1.configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
Object obj = mapper1.treeToValue(root, Object.class);
String json = mapper1.writeValueAsString(obj);
Object content = new ByteArrayInputStream(json.getBytes());
if (content instanceof InputStream) {
// send current configuration
try (OutputStream os = connection.getOutputStream()) {
int count = IOUtils.copy((InputStream) content, os);
if (policyLogger.isDebugEnabled()) {
policyLogger.debug("copied to output, bytes=" + count);
}
}
}
}else{
if(uri.endsWith("set_BRMSParamData")){
connection.setRequestProperty("Content-Type",PolicyController.getContenttype());
try (OutputStream os = connection.getOutputStream()) {
IOUtils.copy((InputStream) request.getInputStream(), os);
}
}else{
boundary = "===" + System.currentTimeMillis() + "===";
connection.setRequestProperty("Content-Type","multipart/form-data; boundary=" + boundary);
try (OutputStream os = connection.getOutputStream()) {
if(item != null){
IOUtils.copy((InputStream) item.getInputStream(), os);
}
}
}
}
}
connection.connect();
int responseCode = connection.getResponseCode();
if(responseCode == 200){
// get the response content into a String
String responseJson = null;
// read the inputStream into a buffer (trick found online scans entire input looking for end-of-file)
java.util.Scanner scanner = new java.util.Scanner(connection.getInputStream());
scanner.useDelimiter("\\A");
responseJson = scanner.hasNext() ? scanner.next() : "";
scanner.close();
policyLogger.info("JSON response from PAP: " + responseJson);
return responseJson;
}
} catch (Exception e) {
policyLogger.error("Exception Occured"+e);
}finally{
if(file != null && file.exists() && file.delete()){
policyLogger.info("File Deleted Successfully");
}
if (connection != null) {
try {
// For some reason trying to get the inputStream from the connection
// throws an exception rather than returning null when the InputStream does not exist.
InputStream is = connection.getInputStream();
if (is != null) {
is.close();
}
} catch (IOException ex) {
policyLogger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Failed to close connection: " + ex, ex);
}
connection.disconnect();
}
}
return null;
}
@RequestMapping(value={"/getDictionary/*"}, method={RequestMethod.GET})
public void getDictionaryController(HttpServletRequest request, HttpServletResponse response){
String uri = request.getRequestURI().replace("/getDictionary", "");
String body;
ResponseEntity<?> responseEntity = sendToPAP(null, uri, HttpMethod.GET);
if(responseEntity != null){
body = responseEntity.getBody().toString();
}else{
body = "";
}
try {
response.getWriter().write(body);
} catch (IOException e) {
policyLogger.error("Exception occured while getting Dictionary entries", e);
}
}
@RequestMapping(value={"/saveDictionary/*/*"}, method={RequestMethod.POST})
public void saveDictionaryController(HttpServletRequest request, HttpServletResponse response) throws IOException{
String userId = "";
String uri = request.getRequestURI().replace("/saveDictionary", "");
if(uri.startsWith("/")){
uri = uri.substring(uri.indexOf('/')+1);
}
uri = "/onap" + uri.substring(uri.indexOf('/'));
if(uri.contains(importDictionary)){
userId = UserUtils.getUserSession(request).getOrgUserId();
uri = uri+ "?userId=" +userId;
}
policyLogger.info("****************************************Logging UserID while Saving Dictionary*****************************************************");
policyLogger.info("UserId: " + userId);
policyLogger.info("***********************************************************************************************************************************");
String body = callPAP(request, "POST", uri.replaceFirst("/", "").trim());
if(body != null && !body.isEmpty()){
response.getWriter().write(body);
}else{
response.getWriter().write("Failed");
}
}
@RequestMapping(value={"/deleteDictionary/*/*"}, method={RequestMethod.POST})
public void deletetDictionaryController(HttpServletRequest request, HttpServletResponse response) throws IOException {
String uri = request.getRequestURI().replace("/deleteDictionary", "");
if(uri.startsWith("/")){
uri = uri.substring(uri.indexOf('/')+1);
}
uri = "/onap" + uri.substring(uri.indexOf('/'));
String userId = UserUtils.getUserSession(request).getOrgUserId();
policyLogger.info("****************************************Logging UserID while Deleting Dictionary*****************************************************");
policyLogger.info("UserId: " + userId);
policyLogger.info("*************************************************************************************************************************************");
String body = callPAP(request, "POST", uri.replaceFirst("/", "").trim());
if(body != null && !body.isEmpty()){
response.getWriter().write(body);
}else{
response.getWriter().write("Failed");
}
}
@RequestMapping(value={"/searchDictionary"}, method={RequestMethod.POST})
public ModelAndView searchDictionaryController(HttpServletRequest request, HttpServletResponse response) throws IOException {
Object resultList;
String uri = request.getRequestURI();
if(uri.startsWith("/")){
uri = uri.substring(uri.indexOf('/')+1);
}
uri = "/onap" + uri.substring(uri.indexOf('/'));
try{
String body = callPAP(request, "POST", uri.replaceFirst("/", "").trim());
if(body.contains("CouldNotConnectException")){
List<String> data = new ArrayList<>();
data.add("Elastic Search Server is down");
resultList = data;
}else{
JSONObject json = new JSONObject(body);
resultList = json.get("policyresult");
}
}catch(Exception e){
policyLogger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Exception Occured while querying Elastic Search: " + e);
List<String> data = new ArrayList<>();
data.add("Elastic Search Server is down");
resultList = data;
}
response.setCharacterEncoding(PolicyController.getCharacterencoding());
response.setContentType(PolicyController.getContenttype());
PrintWriter out = response.getWriter();
JSONObject j = new JSONObject("{result: " + resultList + "}");
out.write(j.toString());
return null;
}
@RequestMapping(value={"/searchPolicy"}, method={RequestMethod.POST})
public ModelAndView searchPolicy(HttpServletRequest request, HttpServletResponse response) throws IOException{
Object resultList;
String uri = request.getRequestURI()+"?action=search";
if(uri.startsWith("/")){
uri = uri.substring(uri.indexOf('/')+1);
}
uri = "/onap" + uri.substring(uri.indexOf('/'));
String body = callPAP(request, "POST", uri.replaceFirst("/", "").trim());
JSONObject json = new JSONObject(body);
try{
resultList = json.get("policyresult");
}catch(Exception e){
List<String> data = new ArrayList<>();
resultList = json.get("data");
data.add("Exception");
data.add(resultList.toString());
resultList = data;
policyLogger.error("Exception Occured while searching for Policy in Elastic Database" +e);
}
response.setCharacterEncoding("UTF-8");
response.setContentType("application / json");
request.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
JSONObject j = new JSONObject("{result: " + resultList + "}");
out.write(j.toString());
return null;
}
public void deleteElasticData(String fileName){
String uri = "searchPolicy?action=delete&policyName='"+fileName+"'";
callPAP(null, "POST", uri.trim());
}
public String notifyOtherPAPSToUpdateConfigurations(String mode, String newName, String oldName){
String uri = "onap/notifyOtherPAPs?action="+mode+"&newPolicyName="+newName+"&oldPolicyName="+oldName+"";
return callPAP(null, "POST", uri.trim());
}
}
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