Esempio n. 1
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  /**
   * Test concurrent reader and writer (GH-458).
   *
   * <p><b>Test case:</b>
   *
   * <ol>
   *   <li/>start a long running reader;
   *   <li/>try to start a writer: it should time out;
   *   <li/>stop the reader;
   *   <li/>start the writer again: it should succeed.
   * </ol>
   *
   * @throws Exception error during request execution
   */
  @Test
  @Ignore("There is no way to stop a query on the server!")
  public void testReaderWriter() throws Exception {
    final String readerQuery = "?query=(1%20to%20100000000000000)%5b.=1%5d";
    final String writerQuery = "/test.xml";
    final byte[] content = Token.token("<a/>");

    final Get readerAction = new Get(readerQuery);
    final Put writerAction = new Put(writerQuery, content);

    final ExecutorService exec = Executors.newFixedThreadPool(2);

    // start reader
    exec.submit(readerAction);
    Performance.sleep(TIMEOUT); // delay in order to be sure that the reader has started
    // start writer
    Future<HTTPResponse> writer = exec.submit(writerAction);

    try {
      final HTTPResponse result = writer.get(TIMEOUT, TimeUnit.MILLISECONDS);

      if (result.status.isSuccess()) fail("Database modified while a reader is running");
      throw new Exception(result.toString());
    } catch (final TimeoutException e) {
      // writer is blocked by the reader: stop it
      writerAction.stop = true;
    }

    // stop reader
    readerAction.stop = true;

    // start the writer again
    writer = exec.submit(writerAction);
    assertEquals(HTTPCode.CREATED, writer.get().status);
  }
Esempio n. 2
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  /**
   * Runs the command without permission, data and concurrency checks.
   *
   * @param ctx database context
   * @param os output stream
   * @return result of check
   */
  public boolean run(final Context ctx, final OutputStream os) {
    perf = new Performance();
    context = ctx;
    prop = ctx.prop;
    mprop = ctx.mprop;
    out = PrintOutput.get(os);

    try {
      return run();
    } catch (final ProgressException ex) {
      // process was interrupted by the user or server
      abort();
      return error(INTERRUPTED);
    } catch (final Throwable ex) {
      // unexpected error
      Performance.gc(2);
      abort();
      if (ex instanceof OutOfMemoryError) {
        Util.debug(ex);
        return error(OUT_OF_MEM + (createWrite() ? H_OUT_OF_MEM : ""));
      }
      return error(Util.bug(ex) + NL + info.toString());
    } finally {
      // flushes the output
      try {
        if (out != null) out.flush();
      } catch (final IOException ignored) {
      }
    }
  }
Esempio n. 3
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 /** Drops users. */
 @Test
 public void dropUsers() {
   no(new DropUser(NAME), testSession);
   no(new DropUser(NAME), adminSession);
   ok(new Exit(), testSession);
   // give the server some time to close the client session
   Performance.sleep(50);
   ok(new DropUser(NAME), adminSession);
 }
Esempio n. 4
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 /** Clean up method. */
 @After
 public void cleanUp() {
   try {
     testSession.close();
     adminSession.execute(new DropDB(RENAMED));
     adminSession.execute(new DropDB(NAME));
     adminSession.close();
     // give the server some time to clean up the sessions before next test
     Performance.sleep(100);
   } catch (final Exception ex) {
     fail(Util.message(ex));
   }
 }
Esempio n. 5
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 @Override
 public void run() {
   try {
     for (int i = 0; i < runs; ++i) {
       Performance.sleep((long) (50 * RND.nextDouble()));
       // Return nth text of the database
       final int n = RND.nextInt() % MAX + 1;
       final String qu = Util.info(QUERY, n);
       new XQuery(qu).execute(context);
     }
   } catch (final BaseXException ex) {
     ex.printStackTrace();
   }
 }
Esempio n. 6
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  @Override
  public DiskData build() throws IOException {
    meta.assign(parser);
    meta.dirty = true;

    // calculate optimized output buffer sizes to reduce disk fragmentation
    final Runtime rt = Runtime.getRuntime();
    final long max = Math.min(1 << 22, rt.maxMemory() - rt.freeMemory() >> 2);
    int bs = (int) Math.min(meta.filesize, max);
    bs = Math.max(IO.BLOCKSIZE, bs - bs % IO.BLOCKSIZE);

    // drop old database (if available) and create new one
    DropDB.drop(dbname, sopts);
    sopts.dbpath(dbname).md();

    elemNames = new Names(meta);
    attrNames = new Names(meta);
    try {
      tout = new DataOutput(new TableOutput(meta, DATATBL));
      xout = new DataOutput(meta.dbfile(DATATXT), bs);
      vout = new DataOutput(meta.dbfile(DATAATV), bs);
      sout = new DataOutput(meta.dbfile(DATATMP), bs);

      final Performance perf = Prop.debug ? new Performance() : null;
      Util.debug(tit() + DOTS);
      parse();
      if (Prop.debug) Util.errln(" " + perf + " (" + Performance.getMemory() + ')');

    } catch (final IOException ex) {
      try {
        close();
      } catch (final IOException ignored) {
      }
      throw ex;
    }
    close();

    // copy temporary values into database table
    try (final DataInput in = new DataInput(meta.dbfile(DATATMP))) {
      final TableAccess ta = new TableDiskAccess(meta, true);
      for (; spos < ssize; ++spos) ta.write4(in.readNum(), 8, in.readNum());
      ta.close();
    }
    meta.dbfile(DATATMP).delete();

    // return database instance
    return new DiskData(meta, elemNames, attrNames, path, ns);
  }
Esempio n. 7
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  /**
   * Test 2 concurrent readers (GH-458).
   *
   * <p><b>Test case:</b>
   *
   * <ol>
   *   <li/>start a long running reader;
   *   <li/>start a fast reader: it should succeed.
   * </ol>
   *
   * @throws Exception error during request execution
   */
  @Test
  public void testMultipleReaders() throws Exception {
    final String number = "63177";
    final String slowQuery = "?query=(1%20to%20100000000000000)%5b.=1%5d";
    final String fastQuery = "?query=" + number;

    final Get slowAction = new Get(slowQuery);
    final Get fastAction = new Get(fastQuery);

    final ExecutorService exec = Executors.newFixedThreadPool(2);

    exec.submit(slowAction);
    Performance.sleep(TIMEOUT); // delay in order to be sure that the reader has started
    final Future<HTTPResponse> fast = exec.submit(fastAction);

    try {
      final HTTPResponse result = fast.get(TIMEOUT, TimeUnit.MILLISECONDS);
      assertEquals(HTTPCode.OK, result.status);
      assertEquals(number, result.data);
    } finally {
      slowAction.stop = true;
    }
  }
Esempio n. 8
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 /** Stop BaseX HTTP. */
 private void stopBaseXHTTP() {
   Util.start(BaseXHTTP.class, "stop");
   Performance.sleep(TIMEOUT); // give the server some time to stop
 }
Esempio n. 9
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 /** Start BaseX HTTP. */
 private void startBaseXHTTP() {
   Util.start(BaseXHTTP.class, "-U" + UserText.ADMIN, "-P" + UserText.ADMIN);
   Performance.sleep(TIMEOUT); // give the server some time to stop
 }