Policy Resiliency Code Fixes

Resolved the issue on updating the configuration files when
rename/clone/export/move actions are done through GUI.
Fixed the PolicyManagerServlet code.
Added test cases for newly added files.

Issue-ID: POLICY-609
Change-Id: I9d14f19fe20bbc0e3b3844f85d81f26e34bb26ec
Signed-off-by: rb7147 <rb7147@att.com>

2 files changed, 290 insertions, 0 deletions

diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/UpdateOthersPAPS.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/UpdateOthersPAPS.java
new file mode 100644
index 000000000..c1891b352
--- /dev/null
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/UpdateOthersPAPS.java
@@ -0,0 +1,240 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PAP-REST
+ * ================================================================================
+ * Copyright (C) 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.pap.xacml.rest;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.json.JSONObject;
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.pap.xacml.rest.adapters.UpdateObjectData;
+import org.onap.policy.pap.xacml.rest.components.Policy;
+import org.onap.policy.pap.xacml.rest.util.JsonMessage;
+import org.onap.policy.rest.XACMLRestProperties;
+import org.onap.policy.rest.dao.CommonClassDao;
+import org.onap.policy.rest.jpa.ActionBodyEntity;
+import org.onap.policy.rest.jpa.ConfigurationDataEntity;
+import org.onap.policy.rest.jpa.PolicyDBDaoEntity;
+import org.onap.policy.utils.CryptoUtils;
+import org.onap.policy.xacml.api.XACMLErrorConstants;
+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.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.RestTemplate;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+@Controller
+public class UpdateOthersPAPS {
+	
+	private static final Logger	policyLogger	= FlexLogger.getLogger(UpdateOthersPAPS.class);
+	
+	private static CommonClassDao commonClassDao;
+	
+	private static final String contentType = "application/json";
+	private static String configType =".Config_";
+	private static String actionType =".Action_";
+	private static String error ="error";
+	public static CommonClassDao getCommonClassDao() {
+		return commonClassDao;
+	}
+
+	public static void setCommonClassDao(CommonClassDao commonClassDao) {
+		UpdateOthersPAPS.commonClassDao = commonClassDao;
+	}
+
+	@Autowired
+	private UpdateOthersPAPS(CommonClassDao commonClassDao){
+		UpdateOthersPAPS.commonClassDao = commonClassDao;
+	}
+	
+	public UpdateOthersPAPS() {
+		//Empty Constructor
+	}
+
+	@RequestMapping(value="/notifyOtherPAPs", method= RequestMethod.POST)
+	public void  notifyOthersPAPsToUpdateConfigurations(HttpServletRequest request, HttpServletResponse response){
+		Map<String, Object> model = new HashMap<>();
+		ObjectMapper mapper = new ObjectMapper();
+		UpdateObjectData body = new UpdateObjectData();
+		body.setAction(request.getParameter("action"));
+		body.setNewPolicyName(request.getParameter("newPolicyName"));
+		body.setOldPolicyName(request.getParameter("oldPolicyName"));
+
+		String currentPap = XACMLRestProperties.getProperty("xacml.rest.pap.url");
+		List<Object> getPAPUrls = commonClassDao.getData(PolicyDBDaoEntity.class);
+		if(getPAPUrls != null && !getPAPUrls.isEmpty()){
+			for(int i = 0; i < getPAPUrls.size(); i++){
+				PolicyDBDaoEntity papId = (PolicyDBDaoEntity) getPAPUrls.get(i);
+				String papUrl = papId.getPolicyDBDaoUrl();
+				if(!papUrl.equals(currentPap)){
+					String userName = papId.getUsername();
+					String password = papId.getPassword();
+					Base64.Encoder encoder = Base64.getEncoder();
+					String txt;
+					try{
+						txt = new String(CryptoUtils.decryptTxt(password), StandardCharsets.UTF_8);
+					} catch(Exception e){
+						policyLogger.debug(e);
+						//if we can't decrypt, might as well try it anyway
+						txt = password;
+					}
+					String encoding = encoder.encodeToString((userName+":"+txt).getBytes(StandardCharsets.UTF_8));
+					HttpHeaders headers = new HttpHeaders();
+					headers.set("Authorization", "Basic " + encoding);
+					headers.set("Content-Type", contentType);
+
+					RestTemplate restTemplate = new RestTemplate();
+					HttpEntity<?> requestEntity = new HttpEntity<>(body, headers);
+					HttpClientErrorException exception = null;
+
+					try{
+						restTemplate.exchange(papUrl + "onap/updateConfiguration", HttpMethod.POST, 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())){
+							policyLogger.error(e.getMessage());
+		                    response.addHeader(error, e.getMessage());
+						}
+					}
+					if(exception != null && exception.getStatusCode()!=null){
+						String message;
+						if(exception.getStatusCode().equals(HttpStatus.UNAUTHORIZED)){
+							message = XACMLErrorConstants.ERROR_PERMISSIONS +":"+exception.getStatusCode()+":" + "ERROR_AUTH_GET_PERM" ;
+							policyLogger.error(message);
+						}else if(exception.getStatusCode().equals(HttpStatus.BAD_REQUEST)){
+							message = XACMLErrorConstants.ERROR_DATA_ISSUE + ":"+exception.getStatusCode()+":" + exception.getResponseBodyAsString();
+							policyLogger.error(message);
+						}else if(exception.getStatusCode().equals(HttpStatus.NOT_FOUND)){
+							message = XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error while connecting to " + papUrl + exception;
+							policyLogger.error(message);
+						}else{
+							message = XACMLErrorConstants.ERROR_PROCESS_FLOW + ":"+exception.getStatusCode()+":" + exception.getResponseBodyAsString();
+							policyLogger.error(message);
+						}
+						model.put(papUrl, message);
+					}else{
+						model.put(papUrl, "Success");
+					}
+				}
+			}
+			JsonMessage msg;
+			try {
+				msg = new JsonMessage(mapper.writeValueAsString(model));
+				JSONObject j = new JSONObject(msg);
+				response.getWriter().write(j.toString());
+			} catch (Exception e) {
+				policyLogger.error("Exception Occured"+e);
+			}
+		}
+	}
+	
+	@RequestMapping(value="/updateConfiguration", method= RequestMethod.POST)
+	@ResponseBody
+	public void updateConfiguration(@RequestBody UpdateObjectData data, HttpServletResponse response){
+		String action = data.getAction();
+		String newPolicyName = data.getNewPolicyName();
+		String oldPolicyName = data.getOldPolicyName();
+		try{
+			if("rename".equals(action)){
+				if(oldPolicyName.contains(configType) || oldPolicyName.contains(actionType)){
+					File file;
+					if(oldPolicyName.contains(configType)){
+						file = new File(Policy.getConfigHome() + File.separator + oldPolicyName);
+					}else{
+						file = new File(Policy.getActionHome() + File.separator + oldPolicyName);
+					}
+					if(file.exists()){
+						File renamefile;
+						if(oldPolicyName.contains(configType)){
+							renamefile = new File(Policy.getConfigHome() + File.separator + newPolicyName);
+						}else{
+							renamefile = new File(Policy.getActionHome() + File.separator + newPolicyName);
+						}
+						if(file.renameTo(renamefile)){
+							policyLogger.info("Policy has been renamed Successfully"+newPolicyName);
+							response.addHeader("rename", "Success");
+						}else{
+							response.addHeader("rename", "Failure");
+						}
+					}
+				}
+			}else if("delete".equals(action)){
+				if(oldPolicyName.contains(configType)){
+					Files.deleteIfExists(Paths.get(Policy.getConfigHome() + File.separator + oldPolicyName));
+				}else if(oldPolicyName.contains("Action_")){
+					Files.deleteIfExists(Paths.get(Policy.getActionHome() + File.separator + oldPolicyName));
+				}
+			}else if("clonePolicy".equals(action) || "exportPolicy".equals(action)){
+				if(newPolicyName.contains(configType)){
+					ConfigurationDataEntity configEntiy = (ConfigurationDataEntity) commonClassDao.getEntityItem(ConfigurationDataEntity.class, "configurationName", newPolicyName);
+					saveConfigurationData(configEntiy, newPolicyName);
+				}else if(newPolicyName.contains(actionType)){
+					ActionBodyEntity actionEntiy = (ActionBodyEntity) commonClassDao.getEntityItem(ActionBodyEntity.class, "actionBodyName", newPolicyName);
+					saveActionBodyData(actionEntiy, newPolicyName);
+				}
+			}
+		} catch (IOException e) {
+			policyLogger.error("Exception Occured While updating Configuration"+e);
+		}
+	}
+	
+	private void saveConfigurationData(ConfigurationDataEntity configEntiy, String newPolicyName){
+		try(FileWriter fw = new FileWriter(Policy.getConfigHome() + File.separator + newPolicyName)){
+			BufferedWriter bw = new BufferedWriter(fw);
+			bw.write(configEntiy.getConfigBody());
+			bw.close();
+		}catch (IOException e) {
+			policyLogger.error("Exception Occured While closing the File input stream"+e);
+		}
+	}
+	
+	private void saveActionBodyData(ActionBodyEntity actionEntiy , String newPolicyName){
+		try(FileWriter fw  = new FileWriter(Policy.getActionHome() + File.separator + newPolicyName)){
+			BufferedWriter bw = new BufferedWriter(fw);
+			bw.write(actionEntiy.getActionBody());
+			bw.close();
+		}catch (IOException e) {
+			policyLogger.error("Exception Occured While closing the File input stream"+e);
+		}
+	}
+}
\ No newline at end of file
diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/adapters/UpdateObjectData.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/adapters/UpdateObjectData.java
new file mode 100644
index 000000000..04006f320
--- /dev/null
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/adapters/UpdateObjectData.java
@@ -0,0 +1,50 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PAP-REST
+ * ================================================================================
+ * Copyright (C) 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.pap.xacml.rest.adapters;
+
+public class UpdateObjectData {
+	private String oldPolicyName;
+	private String newPolicyName;
+	private String action;
+	
+	public String getOldPolicyName() {
+		return oldPolicyName;
+	}
+	
+	public void setOldPolicyName(String oldPolicyName) {
+		this.oldPolicyName = oldPolicyName;
+	}
+	
+	public String getNewPolicyName() {
+		return newPolicyName;
+	}
+	
+	public void setNewPolicyName(String newPolicyName) {
+		this.newPolicyName = newPolicyName;
+	}
+	
+	public String getAction() {
+		return action;
+	}
+	
+	public void setAction(String action) {
+		this.action = action;
+	}
+}