org.eclipse.smila.jobmanager.httphandler
Class InitialTaskHandler

java.lang.Object
  org.eclipse.smila.http.server.util.ARequestHandler
      org.eclipse.smila.http.server.json.JsonRequestHandler
          org.eclipse.smila.jobmanager.httphandler.AJobManagerHandler
              org.eclipse.smila.jobmanager.httphandler.InitialTaskHandler

All Implemented Interfaces:

HttpHandler, RequestHandler

public class InitialTaskHandler
extends AJobManagerHandler

Implements the handling of HTTP requests of a worker to obtain an initial task. URL pattern: -workerName-/initialTask/-jobName-/

Field Summary

Fields inherited from class org.eclipse.smila.http.server.json.JsonRequestHandler

FACTORY, HEADER_REQUEST_HOST, HTTP_UTILS

Constructor Summary

InitialTaskHandler()

Method Summary

protected int	getErrorStatus(java.lang.String method, java.lang.String requestUri, java.lang.Throwable ex) Adds HTTP result code 400 ("BAD_REQUEST") for InvalidValueTypeException to the exception handling of AJobManagerHandler.getErrorStatus(String, String, Throwable).
protected int	getSuccessStatus(java.lang.String requestMethod, java.lang.String requestUri, Record inputRecord, java.lang.Object resultObject) return NO_CONTENT if no task was found.
java.lang.Object	process(java.lang.String method, java.lang.String requestUri, Record inputRecord) process input record and return result object.

Methods inherited from class org.eclipse.smila.jobmanager.httphandler.AJobManagerHandler

getDefinitionPersistence, getJobRunDataProvider, getJobRunEngine, getJobTaskProcessor, isDeleteRequest, isGetOrDeleteRequest, isGetOrPostRequest, isGetRequest, isPostRequest, isValidMethod, setDefinitionPersistence, setJobRunDataProvider, setJobRunEngine, setJobTaskProcessor, unsetDefinitionPersistence, unsetJobRunDataProvider, unsetJobRunEngine, unsetJobTaskProcessor

Methods inherited from class org.eclipse.smila.http.server.json.JsonRequestHandler

getRequestHost, getSuccessStatus, handle, process, writeErrorResult, writeResultObject, writeSuccessResult

Methods inherited from class org.eclipse.smila.http.server.util.ARequestHandler

activate, getDynamicUriParts, getRootContextPath, getStaticUriParts, getUriPattern, matches, urlDecode

Methods inherited from class java.lang.Object

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

Constructor Detail

InitialTaskHandler

public InitialTaskHandler()

Method Detail

process

public java.lang.Object process(java.lang.String method,
                                java.lang.String requestUri,
                                Record inputRecord)
                         throws java.lang.Exception

process input record and return result object. Override this method in your handler if you do not need access to HttpExchange object, e.g. to read http header fields. Otherwise use overloaded method with HttpExchange parameter.

Overrides:

process in class JsonRequestHandler

Parameters:

method - HTTP method

requestUri - request URI.

inputRecord - input record parsed either from request body, if it has content, or from request URI parameters.

Returns:

result object, may be null. If this is not a Record, you have to provide a JsonRequestHandler.writeResultObject(OutputStream, Object) method, too.

Throws:

java.lang.Exception - any failure during processing.

getErrorStatus

protected int getErrorStatus(java.lang.String method,
                             java.lang.String requestUri,
                             java.lang.Throwable ex)

Adds HTTP result code 400 ("BAD_REQUEST") for InvalidValueTypeException to the exception handling of AJobManagerHandler.getErrorStatus(String, String, Throwable).

Overrides:

getErrorStatus in class AJobManagerHandler

Parameters:

method - HTTP method

requestUri - request URI

ex - an exception

Returns:

error status code.

See Also:

HTTP_UTILS#getErrorStatus(String, String, Throwable)

getSuccessStatus

protected int getSuccessStatus(java.lang.String requestMethod,
                               java.lang.String requestUri,
                               Record inputRecord,
                               java.lang.Object resultObject)

return NO_CONTENT if no task was found. Returns the success code.

Overrides:

getSuccessStatus in class JsonRequestHandler

Parameters:

requestMethod - HTTP method

requestUri - request URI

inputRecord - input record

resultObject - result object returned from process

Returns:

the status code to return for successful requests using the method and request URI.