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