ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/XACMLPdpRegisterThread.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP-PDP-REST
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21
  22 package org.onap.policy.pdp.rest;
  23
  24 import java.io.ByteArrayInputStream;
  25 import java.io.ByteArrayOutputStream;
  26 import java.io.IOException;
  27 import java.io.InputStream;
  28 import java.io.OutputStream;
  29 import java.net.HttpURLConnection;
  30 import java.net.URL;
  31 import java.nio.charset.StandardCharsets;
  32 import java.nio.file.Files;
  33 import java.util.Base64;
  34 import java.util.Properties;
  35 import java.util.UUID;
  36
  37 import org.apache.commons.io.IOUtils;
  38 import org.onap.policy.pdp.rest.XACMLPdpServlet.PutRequest;
  39 import org.onap.policy.rest.XACMLRestProperties;
  40
  41 import org.onap.policy.xacml.api.XACMLErrorConstants;
  42 import com.att.research.xacml.util.XACMLProperties;
  43
  44 import org.onap.policy.common.logging.ONAPLoggingContext;
  45 import org.onap.policy.common.logging.eelf.PolicyLogger;
  46 import org.onap.policy.common.logging.flexlogger.*;
  47
  48 public class XACMLPdpRegisterThread implements Runnable {
  49         private static final Logger LOGGER      = FlexLogger.getLogger(XACMLPdpRegisterThread.class);
  50         private static final Logger auditLogger = FlexLogger.getLogger("auditLogger");
  51         private ONAPLoggingContext baseLoggingContext = null;
  52
  53
  54
  55         public volatile boolean isRunning = false;
  56
  57         public XACMLPdpRegisterThread(ONAPLoggingContext baseLoggingContext) {
  58                 this.baseLoggingContext = baseLoggingContext;
  59         }
  60
  61         public synchronized boolean isRunning() {
  62                 return this.isRunning;
  63         }
  64
  65         public synchronized void terminate() {
  66                 this.isRunning = false;
  67         }
  68
  69         /**
  70          *
  71          * This is our thread that runs on startup to tell the PAP server we are up-and-running.
  72          *
  73          */
  74         @Override
  75         public void run() {
  76                 synchronized(this) {
  77                         this.isRunning = true;
  78                 }
  79                 // get a new logging context for the thread
  80                 ONAPLoggingContext loggingContext = new ONAPLoggingContext(baseLoggingContext);
  81                 loggingContext.setServiceName("PDP:PAP.register");
  82                 //are we registered with at least one
  83                 boolean registered = false;
  84                 boolean interrupted = false;
  85                 /*
  86                 int seconds;
  87                 try {
  88                         seconds = Integer.parseInt(XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_REGISTER_SLEEP));
  89                 } catch (NumberFormatException e) {
  90                         LOGGER.error( XACMLErrorConstants.ERROR_SYSTEM_ERROR +"REGISTER_SLEEP: ", e);
  91                         seconds = 5;
  92                 }
  93                 if (seconds < 5) {
  94                         seconds = 5;
  95                 }
  96                 int retries;
  97                 try {
  98                         retries = Integer.parseInt(XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_REGISTER_RETRIES));
  99                 } catch (NumberFormatException e) {
 100                         LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR +" REGISTER_SLEEP: ", e);
 101                         retries = -1;
 102                 }
 103                 */
 104                 PapUrlResolver papUrls = PapUrlResolver.getInstance();
 105                 //while (! registered && ! interrupted && this.isRunning()) {
 106                 String tempRootPoliciesProperty = XACMLProperties.getProperty(XACMLProperties.PROP_ROOTPOLICIES);
 107                 String tempReferencedPoliciesProperty = XACMLProperties.getProperty(XACMLProperties.PROP_REFERENCEDPOLICIES);
 108                 Properties tempPipConfigProperties = new Properties();
 109                 try(InputStream pipFile = Files.newInputStream(XACMLPdpLoader.getPIPConfig())){
 110                         tempPipConfigProperties.load(pipFile);
 111                 } catch(Exception e){
 112                         LOGGER.error("Failed to open PIP property file", e);
 113                 }
 114                 while(papUrls.hasMoreUrls()){
 115                         String papID = papUrls.getUserId();
 116                         String papPass = papUrls.getPass();
 117                         Base64.Encoder encoder = Base64.getEncoder();
 118                         String encoding = encoder.encodeToString((papID+":"+papPass).getBytes(StandardCharsets.UTF_8));
 119                         HttpURLConnection connection = null;
 120                         try {
 121                                 // get a new transaction (request) ID and update the logging context.
 122                                 // each time through the outer loop is considered a new transaction.
 123                                 // each time through the inner loop (which handles redirects) is a
 124                                 // continuation of the same transaction.
 125                                 UUID requestID = UUID.randomUUID();
 126                                 loggingContext.setRequestID(requestID.toString());
 127                                 //PolicyLogger.info("Request Id generated in XACMLPdpRegisterThread under XACML-PDP-REST");
 128                                 loggingContext.transactionStarted();
 129                                 //
 130                                 // Get the list of PAP Servlet URLs from the property file
 131                                 //
 132                                 //String papUrlList = XACMLProperties.getProperty(XACMLRestProperties.PROP_PAP_URL);
 133                                 //String[] papUrls = papUrlList.split(",");
 134                                 //PapUrlResolver.setPapUrls(papUrls);
 135                                 URL url = new URL(papUrls.getUrl());
 136                                 LOGGER.info("Registering with " + url.toString());
 137                                 //PolicyLogger.info("new transaction (request) ID and update to logging context in XACMLPdpRegisterThread");
 138                                 boolean finished = false;
 139                                 while (! finished) {
 140                                         //
 141                                         // Open up the connection
 142                                         //
 143                                         connection = (HttpURLConnection)url.openConnection();
 144                                         //
 145                                         // Setup our method and headers
 146                                         //
 147                             connection.setRequestMethod("POST");
 148                             connection.setRequestProperty("Authorization", "Basic " + encoding);
 149                                         connection.setRequestProperty("Accept", "text/x-java-properties");
 150                             connection.setRequestProperty("Content-Type", "text/x-java-properties");
 151                             connection.setRequestProperty(XACMLRestProperties.PROP_PDP_HTTP_HEADER_ID, XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_ID));
 152                             connection.setRequestProperty(XACMLRestProperties.PROP_PDP_HTTP_HEADER_JMX_PORT, XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_JMX_PORT));
 153                             connection.setRequestProperty("X-ECOMP-RequestID", requestID.toString());
 154                             connection.setUseCaches(false);
 155                             //
 156                             // Adding this in. It seems the HttpUrlConnection class does NOT
 157                             // properly forward our headers for POST re-direction. It does so
 158                             // for a GET re-direction.
 159                             //
 160                             // So we need to handle this ourselves.
 161                             //
 162                             connection.setInstanceFollowRedirects(false);
 163                                 connection.setDoOutput(true);
 164                                 connection.setDoInput(true);
 165                                 try {
 166                                         //
 167                                         // Send our current policy configuration
 168                                         //
 169                                         String lists = XACMLProperties.PROP_ROOTPOLICIES + "=" + tempRootPoliciesProperty;
 170                                         lists = lists + "\n" + XACMLProperties.PROP_REFERENCEDPOLICIES + "=" + tempReferencedPoliciesProperty + "\n";
 171                                         try (InputStream listsInputStream = new ByteArrayInputStream(lists.getBytes());
 172                                                         OutputStream os = connection.getOutputStream()) {
 173                                                 IOUtils.copy(listsInputStream, os);
 174
 175                                                 //
 176                                                 // Send our current PIP configuration
 177                                                 //
 178                                                 //IOUtils.copy(pipInputStream, os);
 179                                                 tempPipConfigProperties.store(os, "");
 180                                         }
 181                                 } catch (Exception e) {
 182                                         LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Failed to send property file", e);
 183                                 }
 184                             //
 185                             // Do the connect
 186                             //
 187                             connection.connect();
 188                             if (connection.getResponseCode() == 204) {
 189                                 LOGGER.info("Success. We are configured correctly.");
 190                                 loggingContext.transactionEnded();
 191                                 PolicyLogger.audit("Success. We are configured correctly.");
 192                                 papUrls.registered();
 193                                 finished = true;
 194                                 registered = true;
 195                             } else if (connection.getResponseCode() == 200) {
 196                                 LOGGER.info("Success. We have a new configuration.");
 197                                 loggingContext.transactionEnded();
 198                                 PolicyLogger.audit("Success. We have a new configuration.");
 199                                 papUrls.registered();
 200                                 Properties properties = new Properties();
 201                                 properties.load(connection.getInputStream());
 202                                 LOGGER.info("New properties: " + properties.toString());
 203                                 //
 204                                 // Queue it
 205                                 //
 206                                 // The incoming properties does NOT include urls
 207                                 Properties returnedPolicyProperties = XACMLProperties.getPolicyProperties(properties, false);
 208                                 tempRootPoliciesProperty = new String(returnedPolicyProperties.getProperty(XACMLProperties.PROP_ROOTPOLICIES));
 209                                 tempReferencedPoliciesProperty = new String(returnedPolicyProperties.getProperty(XACMLProperties.PROP_REFERENCEDPOLICIES));
 210                                 Properties returnedPipProperties = XACMLProperties.getPipProperties(properties);
 211                                 Properties threadSafeReturnedPipProperties = new Properties();
 212                                 ByteArrayOutputStream threadSafeReturnedPipPropertiesOs = new ByteArrayOutputStream();
 213                                 returnedPipProperties.store(threadSafeReturnedPipPropertiesOs, "");
 214                                 InputStream threadSafeReturnedPipPropertiesIs = new ByteArrayInputStream(threadSafeReturnedPipPropertiesOs.toByteArray());
 215                                 threadSafeReturnedPipProperties.load(threadSafeReturnedPipPropertiesIs);
 216                                 tempPipConfigProperties = threadSafeReturnedPipProperties;
 217
 218                                 PutRequest req = new PutRequest(returnedPolicyProperties,returnedPipProperties);
 219                                 XACMLPdpServlet.queue.offer(req);
 220                                 //
 221                                 // We are now registered
 222                                 //
 223                                 finished = true;
 224                                 registered=true;
 225                             } else if (connection.getResponseCode() >= 300 && connection.getResponseCode()  <= 399) {
 226                                 //
 227                                 // Re-direction
 228                                 //
 229                                 String newLocation = connection.getHeaderField("Location");
 230                                 if (newLocation == null || newLocation.isEmpty()) {
 231                                         LOGGER.warn(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Did not receive a valid re-direction location");
 232                                         loggingContext.transactionEnded();
 233                                         auditLogger.warn(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Did not receive a valid re-direction location");
 234                                         PolicyLogger.audit("Transaction Failed - See Error.log");
 235                                         finished = true;
 236                                 } else {
 237                                         LOGGER.info("New Location: " + newLocation);
 238                                         url = new URL(newLocation);
 239                                 }
 240                             } else {
 241                                 LOGGER.warn(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Failed: " + connection.getResponseCode() + "  message: " + connection.getResponseMessage());
 242                                 loggingContext.transactionEnded();
 243                                 auditLogger.warn(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Failed: " + connection.getResponseCode() + "  message: " + connection.getResponseMessage());
 244                                 PolicyLogger.audit("Transaction Failed - See Error.log");
 245                                 finished = true;
 246                                 papUrls.failed();
 247                             }
 248                                 }
 249                         } catch (Exception e) {
 250                                 LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 251                                 loggingContext.transactionEnded();
 252                                 PolicyLogger.audit("Transaction Failed - See Error.log");
 253                                 papUrls.failed();
 254                         } finally {
 255                                 // cleanup the connection
 256                                 if (connection != null) {
 257                                         try {
 258                                                 // For some reason trying to get the inputStream from the connection
 259                                                 // throws an exception rather than returning null when the InputStream does not exist.
 260                                                 InputStream is = null;
 261                                                 try {
 262                                                         is = connection.getInputStream();
 263                                                 } catch (Exception e1) {
 264                                                         LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Failed to get Input Stream: " + e1);
 265                                                 }
 266                                                 if (is != null) {
 267                                                         is.close();
 268                                                 }
 269
 270                                         } catch (IOException ex) {
 271                                                 LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Failed to close connection: " + ex, ex);
 272                                         }
 273                                         connection.disconnect();
 274                                 }
 275                         }
 276
 277                         papUrls.getNext();
 278                 }
 279                 synchronized(this) {
 280                         this.isRunning = false;
 281                 }
 282                 LOGGER.info("Thread exiting...(registered=" + registered + ", interrupted=" + interrupted + ", isRunning=" + this.isRunning() + ", retries=" + "0" + ")");
 283         }
 284
 285 }