datarouter-prov/src/main/java/org/onap/dmaap/datarouter/provisioning/InternalServlet.java

   1 /*******************************************************************************
   2  * ============LICENSE_START==================================================
   3  * * org.onap.dmaap
   4  * * ===========================================================================
   5  * * Copyright © 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  * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  21  * *
  22  ******************************************************************************/
  23
  24
  25 package org.onap.dmaap.datarouter.provisioning;
  26
  27 import static org.onap.dmaap.datarouter.provisioning.utils.HttpServletUtils.sendResponseError;
  28
  29 import com.att.eelf.configuration.EELFLogger;
  30 import com.att.eelf.configuration.EELFManager;
  31 import java.io.ByteArrayOutputStream;
  32 import java.io.File;
  33 import java.io.IOException;
  34 import java.io.InputStream;
  35 import java.nio.file.FileStore;
  36 import java.nio.file.FileSystem;
  37 import java.nio.file.Files;
  38 import java.nio.file.Path;
  39 import java.nio.file.Paths;
  40 import java.nio.file.StandardCopyOption;
  41 import java.util.Properties;
  42
  43 import javax.servlet.http.HttpServletRequest;
  44 import javax.servlet.http.HttpServletResponse;
  45
  46 import org.json.JSONArray;
  47 import org.onap.dmaap.datarouter.provisioning.beans.EventLogRecord;
  48 import org.onap.dmaap.datarouter.provisioning.beans.LogRecord;
  49 import org.onap.dmaap.datarouter.provisioning.beans.Parameters;
  50 import org.onap.dmaap.datarouter.provisioning.eelf.EelfMsgs;
  51 import org.onap.dmaap.datarouter.provisioning.utils.DB;
  52 import org.onap.dmaap.datarouter.provisioning.utils.LogfileLoader;
  53 import org.onap.dmaap.datarouter.provisioning.utils.RLEBitSet;
  54
  55
  56
  57 /**
  58  * <p>
  59  * This servlet handles requests to URLs under /internal on the provisioning server. These include:
  60  * </p>
  61  * <div class="contentContainer">
  62  * <table class="packageSummary" border="0" cellpadding="3" cellspacing="0">
  63  * <caption><span>URL Path Summary</span><span class="tabEnd">&nbsp;</span></caption>
  64  * <tr>
  65  * <th class="colFirst" width="15%">URL Path</th>
  66  * <th class="colOne">Method</th>
  67  * <th class="colLast">Purpose</th>
  68  * </tr>
  69  * <tr class="altColor">
  70  * <td class="colFirst">/internal/prov</td>
  71  * <td class="colOne">GET</td>
  72  * <td class="colLast">used to GET a full JSON copy of the provisioning data.</td>
  73  * </tr>
  74  * <tr class="rowColor">
  75  * <td class="colFirst">/internal/fetchProv</td>
  76  * <td class="colOne">GET</td>
  77  * <td class="colLast">used to signal to a standby POD that the provisioning data should be fetched from the active
  78  * POD.</td>
  79  * </tr>
  80  * <tr class="altColor">
  81  * <td class="colFirst" rowspan="2">/internal/logs</td>
  82  * <td class="colOne">GET</td>
  83  * <td class="colLast">used to GET an index of log files and individual logs for this provisioning server.</td>
  84  * </tr>
  85  * <tr class="altColor">
  86  * <td class="colOne">POST</td>
  87  * <td class="colLast">used to POST log files from the individual nodes to this provisioning server.</td>
  88  * </tr>
  89  * <tr class="rowColor">
  90  * <td class="colFirst" rowspan="4">/internal/api</td>
  91  * <td class="colOne">GET</td>
  92  * <td class="colLast">used to GET an individual parameter value. The parameter name is specified by the path after
  93  * /api/.</td>
  94  * </tr>
  95  * <tr class="rowColor">
  96  * <td class="colOne">PUT</td>
  97  * <td class="colLast">used to set an individual parameter value. The parameter name is specified by the path after
  98  * /api/.</td>
  99  * </tr>
 100  * <tr class="rowColor">
 101  * <td class="colOne">DELETE</td>
 102  * <td class="colLast">used to remove an individual parameter value. The parameter name is specified by the path after
 103  * /api/.</td>
 104  * </tr>
 105  * <tr class="rowColor">
 106  * <td class="colOne">POST</td>
 107  * <td class="colLast">used to create a new individual parameter value. The parameter name is specified by the path
 108  * after /api/.</td>
 109  * </tr>
 110  * <tr class="altColor">
 111  * <td class="colFirst">/internal/halt</td>
 112  * <td class="colOne">GET</td>
 113  * <td class="colLast">used to halt the server (must be accessed from 127.0.0.1).</td>
 114  * </tr>
 115  * <tr class="rowColor">
 116  * <td class="colFirst" rowspan="2">/internal/drlogs</td>
 117  * <td class="colOne">GET</td>
 118  * <td class="colLast">used to get a list of DR log entries available for retrieval.
 119  * Note: these are the actual data router log entries sent to the provisioning server by the nodes, not the provisioning
 120  * server's internal logs (access via /internal/logs above). The range is returned as a list of record sequence
 121  * numbers.</td>
 122  * </tr>
 123  * <tr class="rowColor">
 124  * <td class="colOne">POST</td>
 125  * <td class="colLast">used to retrieve specific log entries.
 126  * The sequence numbers of the records to fetch are POST-ed; the records matching the sequence numbers are
 127  * returned.</td>
 128  * </tr>
 129  * <tr class="altColor">
 130  * <td class="colFirst">/internal/route/*</td>
 131  * <td class="colOne">*</td>
 132  * <td class="colLast">URLs under this path are handled via the
 133  * {@link org.onap.dmaap.datarouter.provisioning.RouteServlet}</td>
 134  * </tr>
 135  * </table>
 136  * </div>
 137  * <p>
 138  * Authorization to use these URLs is a little different than for other URLs on the provisioning server. For the most
 139  * part, the IP address that the request comes from should be either:
 140  * </p>
 141  * <ol>
 142  * <li>an IP address of a provisioning server, or</li>
 143  * <li>the IP address of a node (to allow access to /internal/prov), or</li>
 144  * <li>an IP address from the "<i>special subnet</i>" which is configured with
 145  * the PROV_SPECIAL_SUBNET parameter.
 146  * </ol>
 147  * <p>
 148  * In addition, requests to /internal/halt can ONLY come from localhost (127.0.0.1) on the HTTP port.
 149  * </p>
 150  * <p>
 151  * All DELETE/GET/PUT/POST requests made to /internal/api on this servlet on the standby server are proxied to the
 152  * active server (using the {@link ProxyServlet}) if it is up and reachable.
 153  * </p>
 154  *
 155  * @author Robert Eby
 156  * @version $Id: InternalServlet.java,v 1.23 2014/03/24 18:47:10 eby Exp $
 157  */
 158
 159 @SuppressWarnings("serial")
 160 public class InternalServlet extends ProxyServlet {
 161
 162
 163     private static final Object lock = new Object();
 164     private static Integer logseq = 0; // another piece of info to make log spool file names unique
 165     //Adding EELF Logger Rally:US664892
 166     private static EELFLogger eelfLogger = EELFManager.getInstance()
 167         .getLogger(InternalServlet.class);
 168
 169     /**
 170      * Delete a parameter at the address /internal/api/&lt;parameter&gt;. See the <b>Internal API</b> document for
 171      * details on how this method should be invoked.
 172      */
 173     @Override
 174     public void doDelete(HttpServletRequest req, HttpServletResponse resp) {
 175         setIpFqdnRequestIDandInvocationIDForEelf("doDelete", req);
 176         eelfLogger.info(EelfMsgs.ENTRY);
 177         try {
 178             eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,
 179                     req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");
 180             EventLogRecord elr = new EventLogRecord(req);
 181             if (!isAuthorizedForInternal(req)) {
 182                 elr.setMessage(UNAUTHORIZED);
 183                 elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 184                 eventlogger.error(elr.toString());
 185                 sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, UNAUTHORIZED, eventlogger);
 186                 return;
 187             }
 188
 189             String path = req.getPathInfo();
 190             if (path.startsWith(API)) {
 191                 if (isProxyOK(req) && isProxyServer()) {
 192                     super.doDelete(req, resp);
 193                     return;
 194                 }
 195                 String key = path.substring(5);
 196                 if (key.length() > 0) {
 197                     Parameters param = Parameters.getParameter(key);
 198                     if (param != null) {
 199                         if (doDelete(param)) {
 200                             elr.setResult(HttpServletResponse.SC_OK);
 201                             eventlogger.info(elr.toString());
 202                             resp.setStatus(HttpServletResponse.SC_OK);
 203                             provisioningDataChanged();
 204                             provisioningParametersChanged();
 205                         } else {
 206                             // Something went wrong with the DELETE
 207                             elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 208                             eventlogger.error(elr.toString());
 209                             sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
 210                                     DB_PROBLEM_MSG, eventlogger);
 211                         }
 212                         return;
 213                     }
 214                 }
 215             }
 216             sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, BAD_URL, eventlogger);
 217         } finally {
 218             eelfLogger.info(EelfMsgs.EXIT);
 219         }
 220     }
 221
 222     /**
 223      * Get some information (such as a parameter) underneath the /internal/ namespace. See the <b>Internal API</b>
 224      * document for details on how this method should be invoked.
 225      */
 226     @Override
 227     public void doGet(HttpServletRequest req, HttpServletResponse resp) {
 228         setIpFqdnRequestIDandInvocationIDForEelf("doGet",req);
 229         eelfLogger.info(EelfMsgs.ENTRY);
 230         try {
 231             eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,
 232                     req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");
 233             String path = req.getPathInfo();
 234             Properties props = (new DB()).getProperties();
 235             if ("/halt".equals(path) && !req.isSecure()) {
 236                 // request to halt the server - can ONLY come from localhost
 237                 String remote = req.getRemoteAddr();
 238                 if (remote.equals(props.getProperty("org.onap.dmaap.datarouter.provserver.localhost"))) {
 239                     intlogger.info("PROV0009 Request to HALT received.");
 240                     resp.setStatus(HttpServletResponse.SC_OK);
 241                     Main.shutdown();
 242                 } else {
 243                     intlogger.info("PROV0010 Disallowed request to HALT received from " + remote);
 244                     resp.setStatus(HttpServletResponse.SC_FORBIDDEN);
 245                 }
 246                 return;
 247             }
 248
 249             EventLogRecord elr = new EventLogRecord(req);
 250             if (!isAuthorizedForInternal(req)) {
 251                 elr.setMessage(UNAUTHORIZED);
 252                 elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 253                 eventlogger.error(elr.toString());
 254                 sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, UNAUTHORIZED, eventlogger);
 255                 return;
 256             }
 257             if ("/fetchProv".equals(path) && !req.isSecure()) {
 258                 // if request came from active_pod or standby_pod and it is not us, reload prov data
 259                 SynchronizerTask sync = SynchronizerTask.getSynchronizer();
 260                 sync.doFetch();
 261                 resp.setStatus(HttpServletResponse.SC_OK);
 262                 return;
 263             }
 264             if ("/prov".equals(path)) {
 265                 if (isProxyOK(req) && isProxyServer()) {
 266                     if (super.doGetWithFallback(req, resp)) {
 267                         return;
 268                     }
 269                     // fall back to returning the local data if the remote is unreachable
 270                     intlogger.info("Active server unavailable; falling back to local copy.");
 271                 }
 272                 Poker pkr = Poker.getPoker();
 273                 resp.setStatus(HttpServletResponse.SC_OK);
 274                 resp.setContentType(PROVFULL_CONTENT_TYPE2);
 275                 try {
 276                     resp.getOutputStream().print(pkr.getProvisioningString());
 277                 } catch (IOException ioe) {
 278                     intlogger.error("PROV0131 InternalServlet.doGet: " + ioe.getMessage(), ioe);
 279                 }
 280                 return;
 281             }
 282             if ("/logs".equals(path) || LOGS.equals(path)) {
 283                 resp.setStatus(HttpServletResponse.SC_OK);
 284                 resp.setContentType("application/json");
 285                 try {
 286                     resp.getOutputStream().print(generateLogfileList().toString());
 287                 } catch (IOException ioe) {
 288                     intlogger.error("PROV0132 InternalServlet.doGet: " + ioe.getMessage(), ioe);
 289                 }
 290                 return;
 291             }
 292             if (path.startsWith(LOGS)) {
 293                 String logdir = props.getProperty("org.onap.dmaap.datarouter.provserver.accesslog.dir");
 294                 String logfile = path.substring(6);
 295                 if (logdir != null && logfile != null && logfile.indexOf('/') < 0) {
 296                     File log = new File(logdir + "/" + logfile);
 297                     if (log.exists() && log.isFile()) {
 298                         resp.setStatus(HttpServletResponse.SC_OK);
 299                         resp.setContentType(TEXT_CT);
 300                         Path logpath = Paths.get(log.getAbsolutePath());
 301                         try {
 302                             Files.copy(logpath, resp.getOutputStream());
 303                         } catch (IOException ioe) {
 304                             intlogger.error("PROV0133 InternalServlet.doGet: " + ioe.getMessage(), ioe);
 305                         }
 306                         return;
 307                     }
 308                 }
 309                 sendResponseError(resp, HttpServletResponse.SC_NO_CONTENT, "No file.", eventlogger);
 310                 return;
 311             }
 312             if (path.startsWith(API)) {
 313                 if (isProxyOK(req) && isProxyServer()) {
 314                     super.doGet(req, resp);
 315                     return;
 316                 }
 317                 String key = path.substring(5);
 318                 if (key.length() > 0) {
 319                     Parameters param = Parameters.getParameter(key);
 320                     if (param != null) {
 321                         resp.setStatus(HttpServletResponse.SC_OK);
 322                         resp.setContentType(TEXT_CT);
 323                         try {
 324                             resp.getOutputStream().print(param.getValue() + "\n");
 325                         } catch (IOException ioe) {
 326                             intlogger.error("PROV0134 InternalServlet.doGet: " + ioe.getMessage(), ioe);
 327                         }
 328                         return;
 329                     }
 330                 }
 331             }
 332             if ("/drlogs".equals(path) || "/drlogs/".equals(path)) {
 333                 // Special POD <=> POD API to determine what log file records are loaded here
 334                 LogfileLoader lfl = LogfileLoader.getLoader();
 335                 resp.setStatus(HttpServletResponse.SC_OK);
 336                 resp.setContentType(TEXT_CT);
 337                 try {
 338                     resp.getOutputStream().print(lfl.getBitSet().toString());
 339                 } catch (IOException ioe) {
 340                     intlogger.error("PROV0135 InternalServlet.doGet: " + ioe.getMessage(), ioe);
 341                 }
 342                 return;
 343             }
 344             sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, BAD_URL, eventlogger);
 345         } finally {
 346             eelfLogger.info(EelfMsgs.EXIT);
 347         }
 348     }
 349
 350     /**
 351      * Modify a parameter at the address /internal/api/&lt;parameter&gt;. See the <b>Internal API</b> document for
 352      * details on how this method should be invoked.
 353      */
 354     @Override
 355     public void doPut(HttpServletRequest req, HttpServletResponse resp) {
 356         setIpFqdnRequestIDandInvocationIDForEelf("doPut", req);
 357         eelfLogger.info(EelfMsgs.ENTRY);
 358         try {
 359             eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID,
 360                     req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");
 361             EventLogRecord elr = new EventLogRecord(req);
 362             if (!isAuthorizedForInternal(req)) {
 363                 elr.setMessage(UNAUTHORIZED);
 364                 elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 365                 eventlogger.error(elr.toString());
 366                 sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, UNAUTHORIZED, eventlogger);
 367                 return;
 368             }
 369             String path = req.getPathInfo();
 370             if (path.startsWith(API)) {
 371                 if (isProxyOK(req) && isProxyServer()) {
 372                     super.doPut(req, resp);
 373                     return;
 374                 }
 375                 String key = path.substring(5);
 376                 if (key.length() > 0) {
 377                     Parameters param = Parameters.getParameter(key);
 378                     if (param != null) {
 379                         String str = catValues(req.getParameterValues("val"));
 380                         param.setValue(str);
 381                         if (doUpdate(param)) {
 382                             elr.setResult(HttpServletResponse.SC_OK);
 383                             eventlogger.info(elr.toString());
 384                             resp.setStatus(HttpServletResponse.SC_OK);
 385                             provisioningDataChanged();
 386                             provisioningParametersChanged();
 387                         } else {
 388                             // Something went wrong with the UPDATE
 389                             elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 390                             eventlogger.error(elr.toString());
 391                             sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
 392                                     DB_PROBLEM_MSG, eventlogger);
 393                         }
 394                         return;
 395                     }
 396                 }
 397             }
 398             sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, BAD_URL, eventlogger);
 399         } finally {
 400             eelfLogger.info(EelfMsgs.EXIT);
 401         }
 402     }
 403
 404     /**
 405      * Create some new information (such as a parameter or log entries) underneath the /internal/ namespace. See the
 406      * <b>Internal API</b> document for details on how this method should be invoked.
 407      */
 408     @SuppressWarnings("resource")
 409     @Override
 410     public void doPost(HttpServletRequest req, HttpServletResponse resp) {
 411         setIpFqdnRequestIDandInvocationIDForEelf("doPost", req);
 412         eelfLogger.info(EelfMsgs.ENTRY);
 413         try {
 414             eelfLogger.info(EelfMsgs.MESSAGE_WITH_BEHALF, req.getHeader(BEHALF_HEADER));
 415             EventLogRecord elr = new EventLogRecord(req);
 416             if (!isAuthorizedForInternal(req)) {
 417                 elr.setMessage(UNAUTHORIZED);
 418                 elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 419                 eventlogger.error(elr.toString());
 420                 sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, UNAUTHORIZED, eventlogger);
 421                 return;
 422             }
 423
 424             String path = req.getPathInfo();
 425             if (path.startsWith(API)) {
 426                 if (isProxyOK(req) && isProxyServer()) {
 427                     super.doPost(req, resp);
 428                     return;
 429                 }
 430                 String key = path.substring(5);
 431                 if (key.length() > 0) {
 432                     Parameters param = Parameters.getParameter(key);
 433                     if (param == null) {
 434                         String str = catValues(req.getParameterValues("val"));
 435                         param = new Parameters(key, str);
 436                         if (doInsert(param)) {
 437                             elr.setResult(HttpServletResponse.SC_OK);
 438                             eventlogger.info(elr.toString());
 439                             resp.setStatus(HttpServletResponse.SC_OK);
 440                             provisioningDataChanged();
 441                             provisioningParametersChanged();
 442                         } else {
 443                             // Something went wrong with the INSERT
 444                             elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 445                             eventlogger.error(elr.toString());
 446                             sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
 447                                     DB_PROBLEM_MSG, eventlogger);
 448                         }
 449                         return;
 450                     }
 451                 }
 452             }
 453
 454             if ("/logs".equals(path) || LOGS.equals(path)) {
 455                 String ctype = req.getHeader("Content-Type");
 456                 if (ctype == null || !TEXT_CT.equals(ctype)) {
 457                     elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 458                     elr.setMessage("Bad media type: " + ctype);
 459                     resp.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 460                     eventlogger.error(elr.toString());
 461                     return;
 462                 }
 463                 String spooldir =
 464                         (new DB()).getProperties().getProperty("org.onap.dmaap.datarouter.provserver.spooldir");
 465                 String spoolname = String.format("%d-%d-", System.currentTimeMillis(), Thread.currentThread().getId());
 466                 synchronized (lock) {
 467                     // perhaps unnecessary, but it helps make the name unique
 468                     spoolname += logseq.toString();
 469                     logseq++;
 470                 }
 471                 String encoding = req.getHeader("Content-Encoding");
 472                 if (encoding != null) {
 473                     if ("gzip".equals(encoding.trim())) {
 474                         spoolname += ".gz";
 475                     } else {
 476                         elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 477                         resp.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 478                         eventlogger.error(elr.toString());
 479                         return;
 480                     }
 481                 }
 482                 // Determine space available -- available space must be at least 5%
 483                 FileSystem fs = (Paths.get(spooldir)).getFileSystem();
 484                 long total = 0;
 485                 long avail = 0;
 486                 for (FileStore store : fs.getFileStores()) {
 487                     try {
 488                         total += store.getTotalSpace();
 489                         avail += store.getUsableSpace();
 490                     } catch (IOException ioe) {
 491                         intlogger.error("PROV0136 InternalServlet.doPost: " + ioe.getMessage(), ioe);
 492                     }
 493                 }
 494                 try {
 495                     fs.close();
 496                 } catch (Exception e) {
 497                     intlogger.error("PROV0137 InternalServlet.doPost: " + e.getMessage(), e);
 498                 }
 499                 if (((avail * 100) / total) < 5) {
 500                     elr.setResult(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
 501                     resp.setStatus(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
 502                     eventlogger.error(elr.toString());
 503                     return;
 504                 }
 505                 Path tmppath = Paths.get(spooldir, spoolname);
 506                 Path donepath = Paths.get(spooldir, "IN." + spoolname);
 507                 try {
 508                     Files.copy(req.getInputStream(), Paths.get(spooldir, spoolname),
 509                             StandardCopyOption.REPLACE_EXISTING);
 510                     Files.move(tmppath, donepath, StandardCopyOption.REPLACE_EXISTING);
 511                     elr.setResult(HttpServletResponse.SC_CREATED);
 512                     resp.setStatus(HttpServletResponse.SC_CREATED);
 513                     eventlogger.info(elr.toString());
 514                     LogfileLoader.getLoader();    // This starts the logfile loader "task"
 515                 } catch (IOException ioe) {
 516                     intlogger.error("PROV0138 InternalServlet.doPost: " + ioe.getMessage(), ioe);
 517                 }
 518                 return;
 519             }
 520
 521             if ("/drlogs".equals(path) || "/drlogs/".equals(path)) {
 522                 // Receive post request and generate log entries
 523                 String ctype = req.getHeader("Content-Type");
 524                 if (ctype == null || !TEXT_CT.equals(ctype)) {
 525                     elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 526                     elr.setMessage("Bad media type: " + ctype);
 527                     resp.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 528                     eventlogger.error(elr.toString());
 529                     return;
 530                 }
 531                 try {
 532                     InputStream is = req.getInputStream();
 533                     ByteArrayOutputStream bos = new ByteArrayOutputStream();
 534                     int ch;
 535                     while ((ch = is.read()) >= 0) {
 536                         bos.write(ch);
 537                     }
 538                     elr.setResult(HttpServletResponse.SC_OK);
 539                     resp.setStatus(HttpServletResponse.SC_OK);
 540                     resp.setContentType(TEXT_CT);
 541                     RLEBitSet bs = new RLEBitSet(bos.toString());    // The set of records to retrieve
 542                     LogRecord.printLogRecords(resp.getOutputStream(), bs);
 543                     eventlogger.info(elr.toString());
 544                 } catch (IOException ioe) {
 545                     intlogger.error("PROV0139 InternalServlet.doPost: " + ioe.getMessage(), ioe);
 546                 }
 547                 return;
 548             }
 549
 550             elr.setResult(HttpServletResponse.SC_NOT_FOUND);
 551             sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, BAD_URL, eventlogger);
 552             eventlogger.error(elr.toString());
 553         } finally {
 554             eelfLogger.info(EelfMsgs.EXIT);
 555         }
 556     }
 557
 558     private String catValues(String[] val) {
 559         StringBuilder sb = new StringBuilder();
 560         if (val != null) {
 561             String pfx = "";
 562             for (String s : val) {
 563                 sb.append(pfx);
 564                 sb.append(s);
 565                 pfx = "|";
 566             }
 567         }
 568         return sb.toString();
 569     }
 570
 571     private JSONArray generateLogfileList() {
 572         JSONArray ja = new JSONArray();
 573         Properties prop = (new DB()).getProperties();
 574         String str = prop.getProperty("org.onap.dmaap.datarouter.provserver.accesslog.dir");
 575         if (str != null) {
 576             String[] dirs = str.split(",");
 577             for (String dir : dirs) {
 578                 File file = new File(dir);
 579                 String[] list = file.list();
 580                 if (list != null) {
 581                     for (String s2 : list) {
 582                         if (!s2.startsWith(".")) {
 583                             ja.put(s2);
 584                         }
 585                     }
 586                 }
 587             }
 588         }
 589         return ja;
 590     }
 591 }