zeta.handler
Class ResultHandler

java.lang.Object
  |
  +--zeta.handler.ResultHandler

All Implemented Interfaces:

PostHandler

public class ResultHandler

extends java.lang.Object

implements PostHandler

Handles a POST request with the result of a work unit. The request must contains the following parameters which are transfered at the header name 'Param-String':

• task - name of task of the work unit.
• work_unit_id - identification of the work unit.
• user - name of the resource provider.
• hostname - name of the host of the resource provider.
• hostaddr - TCP/IP address of the host of the resource provider.

The response contains an 'ok' or an error. The results are stored by the following algorithm:

1. Stores the result of the work unit with current timestamp in the recomputation table if a result exists for this work unit but there exist a reserved work unit for recomputation without a result.
2. Stores the result of the work unit with current timestamp in the result table if no result exists.

Field Summary

private int	concurrentConnections
private short	dataNotCompleteCount
private java.lang.String	dataNotCompleteWorkUnitId
private static java.lang.String	encryptionClass
private static int	encryptionClassTaskId
private int	MAX_CONCURRENT_CONNECTIONS
private short	MAX_DATA_NOT_COMPLETE_COUNT
private ZetaServlet	servlet Servlet which owns this handler.

Constructor Summary

ResultHandler(ZetaServlet servlet)

Method Summary

void	doPost(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp) Handles a POST request with the result of a work unit.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_CONCURRENT_CONNECTIONS

private final int MAX_CONCURRENT_CONNECTIONS

See Also:

Constant Field Values

concurrentConnections

private int concurrentConnections

dataNotCompleteWorkUnitId

private java.lang.String dataNotCompleteWorkUnitId

dataNotCompleteCount

private short dataNotCompleteCount

MAX_DATA_NOT_COMPLETE_COUNT

private final short MAX_DATA_NOT_COMPLETE_COUNT

See Also:

Constant Field Values

servlet

private ZetaServlet servlet

Servlet which owns this handler.

encryptionClass

private static java.lang.String encryptionClass

encryptionClassTaskId

private static int encryptionClassTaskId

Constructor Detail

ResultHandler

public ResultHandler(ZetaServlet servlet)

Parameters:

servlet - servlet which owns this handler.

Method Detail

doPost

public void doPost(javax.servlet.http.HttpServletRequest req,
                   javax.servlet.http.HttpServletResponse resp)
            throws javax.servlet.ServletException,
                   java.sql.SQLException,
                   java.io.IOException

Handles a POST request with the result of a work unit. The request must contains the following parameters which are transfered at the header name 'Param-String':

• task - name of task of the work unit.
• work_unit_id - identification of the work unit.
• user - name of the resource provider.
• hostname - name of the host of the resource provider.
• hostaddr - TCP/IP address of the host of the resource provider.

The response resp contains an 'ok' or an error.

Specified by:

doPost in interface PostHandler

javax.servlet.ServletException

java.sql.SQLException

java.io.IOException