Package com.linkedin.databus2.core.container.request

Examples of com.linkedin.databus2.core.container.request.ContainerOperationProcessor


   * @param name
   * @return the execution handler or null if no such command has been registered.
   */
  public SimpleChannelHandler createExecHandler(String name, Channel channel)
  {
    RequestExecutionHandlerFactory factory = _httpExecHandlers.get(name);
    return (null != factory) ? factory.createHandler(channel) : null;
  }
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  throws IOException, RequestProcessingException
  {
    Set<String> sources = getSourcesParam(request);
    if(sources == null || sources.size() != 1)
    {
      throw new RequestProcessingException("start requires exactly one source be specified");
    }
    long scn = request.getOptionalLongParam(PARAM_SCN, -1L);

    for(EventProducer producer : _eventProducers)
    {
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        if (null != bootstrapStatsCollector)
        {
          bootstrapStatsCollector.registerErrBootstrap();
        }

        throw new RequestProcessingException(e);
      }

      DatabusComponentStatus componentStatus = _componentStatus.getStatusSnapshot();
      if (!componentStatus.isRunningStatus())
      {
        if (null != bootstrapStatsCollector)
          bootstrapStatsCollector.registerErrBootstrap();

       throw new RequestProcessingException(componentStatus.getMessage());
      }

      String partitionInfoString = request.getParams().getProperty(PARTITION_INFO_PARAM);

      DbusKeyFilter keyFilter = null;
      if ( (null != partitionInfoString) && (!partitionInfoString.isEmpty()))
      {
        try
        {
          keyFilter = KeyFilterConfigJSONFactory.parseDbusKeyFilter(partitionInfoString);
          if ( isDebug) LOG.debug("ServerSideFilter is :" + keyFilter);
        } catch ( Exception ex) {
          String msg = "Unable to parse partitionInfo from request. PartitionInfo was :" + partitionInfoString;
          LOG.error(msg,ex);
          throw new RequestProcessingException(msg,ex);
        }
      }

      String outputFormat = request.getParams().getProperty(OUTPUT_PARAM);
      Encoding enc = Encoding.BINARY;

      if ( null != outputFormat)
      {
        try
        {
          enc = Encoding.valueOf(outputFormat.toUpperCase());
        } catch (Exception ex) {
          LOG.error("Unable to find the output format for bootstrap request for " + outputFormat + ". Using Binary!!", ex);
        }
      }

      processor.setKeyFilter(keyFilter);
      String checkpointString = request.getRequiredStringParam(CHECKPOINT_PARAM);

      int bufferMarginSpace = DEFAULT_BUFFER_MARGIN_SPACE;
      if ( null != _serverHostPort)
      {
        bufferMarginSpace = Math.max(bufferMarginSpace, (_serverHostPort.length() + Checkpoint.BOOTSTRAP_SERVER_INFO.length() + DEFAULT_JSON_OVERHEAD_BYTES));
      }

      int clientFreeBufferSize = request.getRequiredIntParam(BATCHSIZE_PARAM) - checkpointString.length() - bufferMarginSpace;

        BootstrapEventWriter writer = null;
        if(_config.getPredicatePushDown())
          writer = createEventWriter(request, clientFreeBufferSize, null, enc);
        else
          writer = createEventWriter(request, clientFreeBufferSize, keyFilter, enc);

        Checkpoint cp = new Checkpoint(checkpointString);


      DbusClientMode consumptionMode = cp.getConsumptionMode();

      LOG.info("Bootstrap request received: " +
          "fetchSize=" + clientFreeBufferSize +
          ", consumptionMode=" + consumptionMode +
          ", checkpoint=" + checkpointString +
          ", predicatePushDown=" + _config.getPredicatePushDown()
          );

      try
      {
        boolean phaseCompleted = false;
        switch (consumptionMode)
        {
        case BOOTSTRAP_SNAPSHOT:
          phaseCompleted = processor.streamSnapShotRows(new Checkpoint(
              checkpointString), writer);
          break;
        case BOOTSTRAP_CATCHUP:
          phaseCompleted = processor.streamCatchupRows(new Checkpoint(
              checkpointString), writer);
          break;
        default:
          if (null != bootstrapStatsCollector)
            bootstrapStatsCollector.registerErrBootstrap();

          throw new RequestProcessingException("Unexpected mode: "
              + consumptionMode);
        }

        if (null != bootstrapStatsCollector)
          bootstrapStatsCollector.registerBootStrapReq(cp, System.currentTimeMillis()-startTime, clientFreeBufferSize);

        if (writer.getNumRowsWritten() == 0 && writer.getSizeOfPendingEvent() > 0)
        {
          // Append a header to indicate to the client that we do have at least one event to
          // send, but it is too large to fit into client's offered buffer.
          request.getResponseContent().addMetadata(DatabusHttpHeaders.DATABUS_PENDING_EVENT_SIZE,
                                                   writer.getSizeOfPendingEvent());
          if (isDebug)
          {
            LOG.debug("Returning 0 events but have pending event of size " + writer.getSizeOfPendingEvent());
          }
        }
        if (phaseCompleted)
        {
          request.getResponseContent().setMetadata(BootstrapProcessor.PHASE_COMPLETED_HEADER_NAME, BootstrapProcessor.PHASE_COMPLETED_HEADER_TRUE);
        }

      }
      catch (BootstrapDatabaseTooOldException e)
      {
        if (null != bootstrapStatsCollector)
          bootstrapStatsCollector.registerErrDatabaseTooOld();

        LOG.error("Bootstrap database is too old!", e);
        throw new RequestProcessingException(e);
      }
      catch (BootstrapDBException e)
      {
        if (null != bootstrapStatsCollector)
          bootstrapStatsCollector.registerErrBootstrap();
        throw new RequestProcessingException(e);
      }
      catch (SQLException e)
      {
        if (null != bootstrapStatsCollector)
          bootstrapStatsCollector.registerErrSqlException();

        throw new RequestProcessingException(e);
      }
      catch (BootstrapProcessingException e)
      {
        if (null != bootstrapStatsCollector)
          bootstrapStatsCollector.registerErrBootstrap();

        throw new RequestProcessingException(e);
      }
    }
    finally
    {
      if ( null != processor)
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            if ((null != expServerInfo) && (! _serverInfo.equals(expServerInfo)))
            {
              String msg = "Bootstrap Server Request should be served by different host : " + bsServerInfo + ", This instance is :" + _serverHostPort;
              LOG.error(msg);
              throw new RequestProcessingException(msg);
            }
          }
        }

        DatabusRequest req = doProcess(request);
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  protected void initializeBootstrapServerCommandProcessors() throws DatabusException
  {
    LOG.info("Initializing Bootstrap HTTP Server");
    LOG.info("Config=" + _bootstrapServerConfig);
    try{
      RequestProcessorRegistry processorRegistry = getProcessorRegistry();
      processorRegistry.register(ConfigRequestProcessor.COMMAND_NAME,
                                 new ConfigRequestProcessor(null, this));
      processorRegistry.register(BootstrapRequestProcessor.COMMAND_NAME,
                                 new BootstrapRequestProcessor(null, _bootstrapServerConfig, this));
      processorRegistry.register(StartSCNRequestProcessor.COMMAND_NAME,
                                 new StartSCNRequestProcessor(null, _bootstrapServerConfig, this));
      processorRegistry.register(TargetSCNRequestProcessor.COMMAND_NAME,
                                 new TargetSCNRequestProcessor(null, _bootstrapServerConfig, this));
      processorRegistry.register(ContainerOperationProcessor.COMMAND_NAME,
                                 new ContainerOperationProcessor(null, this));
    }
    catch (SQLException sqle)
    {
      throw new DatabusException("command registration failed", sqle);
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      _csEventRequestProcessor = new ControlSourceEventsRequestProcessor(
          null, this, plist);
    else
      _csEventRequestProcessor.addEventProducers(plist);

    RequestProcessorRegistry processorRegistry = getProcessorRegistry();
    processorRegistry.reregister(
        ControlSourceEventsRequestProcessor.COMMAND_NAME,
        _csEventRequestProcessor);
  }
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       throw new RequestProcessingException(componentStatus.getMessage());
      }

      String partitionInfoString = request.getParams().getProperty(PARTITION_INFO_PARAM);

      DbusKeyFilter keyFilter = null;
      if ( (null != partitionInfoString) && (!partitionInfoString.isEmpty()))
      {
        try
        {
          keyFilter = KeyFilterConfigJSONFactory.parseDbusKeyFilter(partitionInfoString);
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            .andReturn(vs)
            .anyTimes();
    EasyMock.expect(srs.fetchLatestVersionedSchemaBySourceName(null)).andReturn(vs);

    // mock for MaxSCNReadWriter
    MaxSCNReaderWriter mscn = EasyMock.createMock(MaxSCNReaderWriter.class);
    EasyMock.expect(mscn.getMaxScn()).andReturn((long) -2).atLeastOnce();
    mscn.saveMaxScn(EasyMock.anyLong());
    EasyMock.expectLastCall().anyTimes();
    EasyMock.replay(mscn);
    EasyMock.replay(srs);

    int totalTransWritten = 0;
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    // Register a command to allow start/stop/status of the relay
    List<EventProducer> plist = new ArrayList<EventProducer>();

    PhysicalPartition pPartition = pConfig.getPhysicalPartition();
    MaxSCNReaderWriter maxScnReaderWriters = _maxScnReaderWriters
        .getOrCreateHandler(pPartition);
    LOG.info("Starting server container with maxScnReaderWriter:"
        + maxScnReaderWriters);

    // Get the event buffer
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  /** get maxScnReaderWriters given a physical source **/
  public MaxSCNReaderWriter getMaxSCNReaderWriter(PhysicalSourceStaticConfig pConfig)
  {
    try
    {
      MaxSCNReaderWriter maxScnReaderWriters = _maxScnReaderWriters
        .getOrCreateHandler(pConfig.getPhysicalPartition());
      return maxScnReaderWriters;
    }
    catch (DatabusException e)
    {
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