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 Integer logseq = 0; // another piece of info to make log spool file names unique
 160     //Adding EELF Logger Rally:US664892
 161     private static EELFLogger eelflogger = EELFManager.getInstance()
 162         .getLogger("org.onap.dmaap.datarouter.provisioning.InternalServlet");
 163
 164     /**
 165      * Delete a parameter at the address /internal/api/&lt;parameter&gt;. See the <b>Internal API</b> document for
 166      * details on how this method should be invoked.
 167      */
 168     @Override
 169     public void doDelete(HttpServletRequest req, HttpServletResponse resp) {
 170         setIpAndFqdnForEelf("doDelete");
 171         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");
 172         EventLogRecord elr = new EventLogRecord(req);
 173         if (!isAuthorizedForInternal(req)) {
 174             elr.setMessage("Unauthorized.");
 175             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 176             eventlogger.info(elr);
 177             sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, "Unauthorized.", eventlogger);
 178             return;
 179         }
 180
 181         String path = req.getPathInfo();
 182         if (path.startsWith("/api/")) {
 183             if (isProxyOK(req) && isProxyServer()) {
 184                 try {
 185                     super.doDelete(req, resp);
 186                 } catch (IOException ioe) {
 187                     intlogger.error("IOException" + ioe.getMessage());
 188                 }
 189                 return;
 190             }
 191             String key = path.substring(5);
 192             if (key.length() > 0) {
 193                 Parameters param = Parameters.getParameter(key);
 194                 if (param != null) {
 195                     if (doDelete(param)) {
 196                         elr.setResult(HttpServletResponse.SC_OK);
 197                         eventlogger.info(elr);
 198                         resp.setStatus(HttpServletResponse.SC_OK);
 199                         provisioningDataChanged();
 200                         provisioningParametersChanged();
 201                     } else {
 202                         // Something went wrong with the DELETE
 203                         elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 204                         eventlogger.info(elr);
 205                         sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG, eventlogger);
 206                     }
 207                     return;
 208                 }
 209             }
 210         }
 211         sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, "Bad URL.", eventlogger);
 212     }
 213
 214     /**
 215      * Get some information (such as a parameter) underneath the /internal/ namespace. See the <b>Internal API</b>
 216      * document for details on how this method should be invoked.
 217      */
 218     @Override
 219     public void doGet(HttpServletRequest req, HttpServletResponse resp) {
 220         setIpAndFqdnForEelf("doGet");
 221         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");
 222         String path = req.getPathInfo();
 223         Properties props = (new DB()).getProperties();
 224         if (path.equals("/halt") && !req.isSecure()) {
 225             // request to halt the server - can ONLY come from localhost
 226             String remote = req.getRemoteAddr();
 227             if (remote.equals(props.getProperty("org.onap.dmaap.datarouter.provserver.localhost"))) {
 228                 intlogger.info("PROV0009 Request to HALT received.");
 229                 resp.setStatus(HttpServletResponse.SC_OK);
 230                 Main.shutdown();
 231             } else {
 232                 intlogger.info("PROV0010 Disallowed request to HALT received from " + remote);
 233                 resp.setStatus(HttpServletResponse.SC_FORBIDDEN);
 234             }
 235             return;
 236         }
 237
 238         EventLogRecord elr = new EventLogRecord(req);
 239         if (!isAuthorizedForInternal(req)) {
 240             elr.setMessage("Unauthorized.");
 241             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 242             eventlogger.info(elr);
 243             sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, "Unauthorized.", eventlogger);
 244             return;
 245         }
 246         if (path.equals("/fetchProv") && !req.isSecure()) {
 247             // if request came from active_pod or standby_pod and it is not us, reload prov data
 248             SynchronizerTask s = SynchronizerTask.getSynchronizer();
 249             s.doFetch();
 250             resp.setStatus(HttpServletResponse.SC_OK);
 251             return;
 252         }
 253         if (path.equals("/prov")) {
 254             if (isProxyOK(req) && isProxyServer()) {
 255                 try {
 256                     if (super.doGetWithFallback(req, resp)) {
 257                         return;
 258                     }
 259                 } catch (IOException ioe) {
 260                     intlogger.error("IOException" + ioe.getMessage());
 261                 }
 262                 // fall back to returning the local data if the remote is unreachable
 263                 intlogger.info("Active server unavailable; falling back to local copy.");
 264             }
 265             Poker p = Poker.getPoker();
 266             resp.setStatus(HttpServletResponse.SC_OK);
 267             resp.setContentType(PROVFULL_CONTENT_TYPE2);
 268             try {
 269                 resp.getOutputStream().print(p.getProvisioningString());
 270             } catch (IOException ioe) {
 271                 intlogger.error("IOException" + ioe.getMessage());
 272             }
 273             return;
 274         }
 275         if (path.equals("/logs") || path.equals("/logs/")) {
 276             resp.setStatus(HttpServletResponse.SC_OK);
 277             resp.setContentType("application/json");
 278             try {
 279                 resp.getOutputStream().print(generateLogfileList().toString());
 280             } catch (IOException ioe) {
 281                 intlogger.error("IOException" + ioe.getMessage());
 282             }
 283             return;
 284         }
 285         if (path.startsWith("/logs/")) {
 286             String logdir = props.getProperty("org.onap.dmaap.datarouter.provserver.accesslog.dir");
 287             String logfile = path.substring(6);
 288             if (logdir != null && logfile != null && logfile.indexOf('/') < 0) {
 289                 File log = new File(logdir + "/" + logfile);
 290                 if (log.exists() && log.isFile()) {
 291                     resp.setStatus(HttpServletResponse.SC_OK);
 292                     resp.setContentType("text/plain");
 293                     Path logpath = Paths.get(log.getAbsolutePath());
 294                     try {
 295                         Files.copy(logpath, resp.getOutputStream());
 296                     } catch (IOException ioe) {
 297                         intlogger.error("IOException" + ioe.getMessage());
 298                     }
 299                     return;
 300                 }
 301             }
 302             sendResponseError(resp, HttpServletResponse.SC_NO_CONTENT, "No file.", eventlogger);
 303             return;
 304         }
 305         if (path.startsWith("/api/")) {
 306             if (isProxyOK(req) && isProxyServer()) {
 307                 try {
 308                     super.doGet(req, resp);
 309                 } catch (IOException ioe) {
 310                     intlogger.error("IOException" + ioe.getMessage());
 311                 }
 312                 return;
 313             }
 314             String key = path.substring(5);
 315             if (key.length() > 0) {
 316                 Parameters param = Parameters.getParameter(key);
 317                 if (param != null) {
 318                     resp.setStatus(HttpServletResponse.SC_OK);
 319                     resp.setContentType("text/plain");
 320                     try {
 321                         resp.getOutputStream().print(param.getValue() + "\n");
 322                     } catch (IOException ioe) {
 323                         intlogger.error("IOException" + ioe.getMessage());
 324                     }
 325                     return;
 326                 }
 327             }
 328         }
 329         if (path.equals("/drlogs") || path.equals("/drlogs/")) {
 330             // Special POD <=> POD API to determine what log file records are loaded here
 331             LogfileLoader lfl = LogfileLoader.getLoader();
 332             resp.setStatus(HttpServletResponse.SC_OK);
 333             resp.setContentType("text/plain");
 334             try {
 335                 resp.getOutputStream().print(lfl.getBitSet().toString());
 336             } catch (IOException ioe) {
 337                 intlogger.error("IOException" + ioe.getMessage());
 338             }
 339             return;
 340         }
 341         sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, "Bad URL.", eventlogger);
 342     }
 343
 344     /**
 345      * Modify a parameter at the address /internal/api/&lt;parameter&gt;. See the <b>Internal API</b> document for
 346      * details on how this method should be invoked.
 347      */
 348     @Override
 349     public void doPut(HttpServletRequest req, HttpServletResponse resp) {
 350         setIpAndFqdnForEelf("doPut");
 351         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF_AND_FEEDID, req.getHeader(BEHALF_HEADER), getIdFromPath(req) + "");
 352         EventLogRecord elr = new EventLogRecord(req);
 353         if (!isAuthorizedForInternal(req)) {
 354             elr.setMessage("Unauthorized.");
 355             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 356             eventlogger.info(elr);
 357             sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, "Unauthorized.", eventlogger);
 358             return;
 359         }
 360         String path = req.getPathInfo();
 361         if (path.startsWith("/api/")) {
 362             if (isProxyOK(req) && isProxyServer()) {
 363                 try {
 364                     super.doPut(req, resp);
 365                 } catch (IOException ioe) {
 366                     intlogger.error("IOException" + ioe.getMessage());
 367                 }
 368                 return;
 369             }
 370             String key = path.substring(5);
 371             if (key.length() > 0) {
 372                 Parameters param = Parameters.getParameter(key);
 373                 if (param != null) {
 374                     String t = catValues(req.getParameterValues("val"));
 375                     param.setValue(t);
 376                     if (doUpdate(param)) {
 377                         elr.setResult(HttpServletResponse.SC_OK);
 378                         eventlogger.info(elr);
 379                         resp.setStatus(HttpServletResponse.SC_OK);
 380                         provisioningDataChanged();
 381                         provisioningParametersChanged();
 382                     } else {
 383                         // Something went wrong with the UPDATE
 384                         elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 385                         eventlogger.info(elr);
 386                         sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG, eventlogger);
 387                     }
 388                     return;
 389                 }
 390             }
 391         }
 392         sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, "Bad URL.", eventlogger);
 393     }
 394
 395     /**
 396      * Create some new information (such as a parameter or log entries) underneath the /internal/ namespace. See the
 397      * <b>Internal API</b> document for details on how this method should be invoked.
 398      */
 399     @SuppressWarnings("resource")
 400     @Override
 401     public void doPost(HttpServletRequest req, HttpServletResponse resp) {
 402         setIpAndFqdnForEelf("doPost");
 403         eelflogger.info(EelfMsgs.MESSAGE_WITH_BEHALF, req.getHeader(BEHALF_HEADER));
 404         EventLogRecord elr = new EventLogRecord(req);
 405         if (!isAuthorizedForInternal(req)) {
 406             elr.setMessage("Unauthorized.");
 407             elr.setResult(HttpServletResponse.SC_FORBIDDEN);
 408             eventlogger.info(elr);
 409             sendResponseError(resp, HttpServletResponse.SC_FORBIDDEN, "Unauthorized.", eventlogger);
 410             return;
 411         }
 412
 413         String path = req.getPathInfo();
 414         if (path.startsWith("/api/")) {
 415             if (isProxyOK(req) && isProxyServer()) {
 416                 try {
 417                     super.doPost(req, resp);
 418                 } catch (IOException ioe) {
 419                     intlogger.error("IOException" + ioe.getMessage());
 420                 }
 421                 return;
 422             }
 423             String key = path.substring(5);
 424             if (key.length() > 0) {
 425                 Parameters param = Parameters.getParameter(key);
 426                 if (param == null) {
 427                     String t = catValues(req.getParameterValues("val"));
 428                     param = new Parameters(key, t);
 429                     if (doInsert(param)) {
 430                         elr.setResult(HttpServletResponse.SC_OK);
 431                         eventlogger.info(elr);
 432                         resp.setStatus(HttpServletResponse.SC_OK);
 433                         provisioningDataChanged();
 434                         provisioningParametersChanged();
 435                     } else {
 436                         // Something went wrong with the INSERT
 437                         elr.setResult(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 438                         eventlogger.info(elr);
 439                         sendResponseError(resp, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, DB_PROBLEM_MSG, eventlogger);
 440                     }
 441                     return;
 442                 }
 443             }
 444         }
 445
 446         if (path.equals("/logs") || path.equals("/logs/")) {
 447             String ctype = req.getHeader("Content-Type");
 448             if (ctype == null || !ctype.equals("text/plain")) {
 449                 elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 450                 elr.setMessage("Bad media type: " + ctype);
 451                 resp.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 452                 eventlogger.info(elr);
 453                 return;
 454             }
 455             String spooldir = (new DB()).getProperties().getProperty("org.onap.dmaap.datarouter.provserver.spooldir");
 456             String spoolname = String.format("%d-%d-", System.currentTimeMillis(), Thread.currentThread().getId());
 457             synchronized (logseq) {
 458                 // perhaps unnecessary, but it helps make the name unique
 459                 spoolname += logseq.toString();
 460                 logseq++;
 461             }
 462             String encoding = req.getHeader("Content-Encoding");
 463             if (encoding != null) {
 464                 if (encoding.trim().equals("gzip")) {
 465                     spoolname += ".gz";
 466                 } else {
 467                     elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 468                     resp.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 469                     eventlogger.info(elr);
 470                     return;
 471                 }
 472             }
 473             // Determine space available -- available space must be at least 5%
 474             FileSystem fs = (Paths.get(spooldir)).getFileSystem();
 475             long total = 0;
 476             long avail = 0;
 477             for (FileStore store : fs.getFileStores()) {
 478                 try {
 479                     total += store.getTotalSpace();
 480                     avail += store.getUsableSpace();
 481                 } catch (IOException ioe) {
 482                     intlogger.error("IOException" + ioe.getMessage());
 483                 }
 484             }
 485             try {
 486                 fs.close();
 487             } catch (Exception e) {
 488             }
 489             if (((avail * 100) / total) < 5) {
 490                 elr.setResult(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
 491                 resp.setStatus(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
 492                 eventlogger.info(elr);
 493                 return;
 494             }
 495             Path tmppath = Paths.get(spooldir, spoolname);
 496             Path donepath = Paths.get(spooldir, "IN." + spoolname);
 497             try {
 498                 Files.copy(req.getInputStream(), Paths.get(spooldir, spoolname), StandardCopyOption.REPLACE_EXISTING);
 499                 Files.move(tmppath, donepath, StandardCopyOption.REPLACE_EXISTING);
 500                 elr.setResult(HttpServletResponse.SC_CREATED);
 501                 resp.setStatus(HttpServletResponse.SC_CREATED);
 502                 eventlogger.info(elr);
 503                 LogfileLoader.getLoader();    // This starts the logfile loader "task"
 504             } catch (IOException ioe) {
 505                 intlogger.error("IOException" + ioe.getMessage());
 506             }
 507             return;
 508         }
 509
 510         if (path.equals("/drlogs") || path.equals("/drlogs/")) {
 511             // Receive post request and generate log entries
 512             String ctype = req.getHeader("Content-Type");
 513             if (ctype == null || !ctype.equals("text/plain")) {
 514                 elr.setResult(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 515                 elr.setMessage("Bad media type: " + ctype);
 516                 resp.setStatus(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
 517                 eventlogger.info(elr);
 518                 return;
 519             }
 520             try {
 521                 InputStream is = req.getInputStream();
 522                 ByteArrayOutputStream bos = new ByteArrayOutputStream();
 523                 int ch;
 524                 while ((ch = is.read()) >= 0) {
 525                     bos.write(ch);
 526                 }
 527                 RLEBitSet bs = new RLEBitSet(bos.toString());    // The set of records to retrieve
 528                 elr.setResult(HttpServletResponse.SC_OK);
 529                 resp.setStatus(HttpServletResponse.SC_OK);
 530                 resp.setContentType("text/plain");
 531                 LogRecord.printLogRecords(resp.getOutputStream(), bs);
 532                 eventlogger.info(elr);
 533             } catch (IOException ioe) {
 534                 intlogger.error("IOException" + ioe.getMessage());
 535             }
 536             return;
 537         }
 538
 539         elr.setResult(HttpServletResponse.SC_NOT_FOUND);
 540         sendResponseError(resp, HttpServletResponse.SC_NOT_FOUND, "Bad URL.", eventlogger);
 541         eventlogger.info(elr);
 542     }
 543
 544     private String catValues(String[] v) {
 545         StringBuilder sb = new StringBuilder();
 546         if (v != null) {
 547             String pfx = "";
 548             for (String s : v) {
 549                 sb.append(pfx);
 550                 sb.append(s);
 551                 pfx = "|";
 552             }
 553         }
 554         return sb.toString();
 555     }
 556
 557     private JSONArray generateLogfileList() {
 558         JSONArray ja = new JSONArray();
 559         Properties p = (new DB()).getProperties();
 560         String s = p.getProperty("org.onap.dmaap.datarouter.provserver.accesslog.dir");
 561         if (s != null) {
 562             String[] dirs = s.split(",");
 563             for (String dir : dirs) {
 564                 File f = new File(dir);
 565                 String[] list = f.list();
 566                 if (list != null) {
 567                     for (String s2 : list) {
 568                         if (!s2.startsWith(".")) {
 569                             ja.put(s2);
 570                         }
 571                     }
 572                 }
 573             }
 574         }
 575         return ja;
 576     }
 577 }