org.apache.camel.component.gae.task
Class GTaskBinding

java.lang.Object
  org.apache.camel.component.gae.task.GTaskBinding

All Implemented Interfaces:

InboundBinding<GTaskEndpoint,HttpServletRequest,HttpServletResponse>, OutboundBinding<GTaskEndpoint,com.google.appengine.api.labs.taskqueue.TaskOptions,Void>

public class GTaskBinding
extends Object
implements OutboundBinding<GTaskEndpoint,com.google.appengine.api.labs.taskqueue.TaskOptions,Void>, InboundBinding<GTaskEndpoint,HttpServletRequest,HttpServletResponse>

Binds the TaskOptions of the task queueing service to a Camel Exchange for outbound communication. For inbound communication a HttpMessage is bound to Exchange.

Field Summary

static String	GTASK_QUEUE_NAME Camel header name corresponding to X-AppEngine-QueueName header created by task queueing service.
static String	GTASK_RETRY_COUNT Camel header name corresponding to X-AppEngine-TaskRetryCount header created by task queueing service.
static String	GTASK_TASK_NAME Camel header name corresponding to X-AppEngine-TaskName header created by task queueing service.

Constructor Summary

GTaskBinding()

Method Summary

protected String	getWorkerRoot(GTaskEndpoint endpoint)
Exchange	readRequest(GTaskEndpoint endpoint, Exchange exchange, HttpServletRequest request) Replaces the task service-specific headers (X-AppEngine-*) with Camel-specific headers.
protected void	readRequestHeaders(GTaskEndpoint endpoint, Exchange exchange, HttpServletRequest request)
Exchange	readResponse(GTaskEndpoint endpoint, Exchange exchange, Void response) Populates an Exchange from response data and endpoint configuration data.
com.google.appengine.api.labs.taskqueue.TaskOptions	writeRequest(GTaskEndpoint endpoint, Exchange exchange, com.google.appengine.api.labs.taskqueue.TaskOptions request) Reads data from exchange and writes it to a newly created TaskOptions instance.
protected void	writeRequestBody(GTaskEndpoint endpoint, Exchange exchange, com.google.appengine.api.labs.taskqueue.TaskOptions request)
protected void	writeRequestHeaders(GTaskEndpoint endpoint, Exchange exchange, com.google.appengine.api.labs.taskqueue.TaskOptions request)
HttpServletResponse	writeResponse(GTaskEndpoint endpoint, Exchange exchange, HttpServletResponse response) Creates or populates a response object from Exchange and endpoint configuration data.

Methods inherited from class java.lang.Object

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

Field Detail

GTASK_QUEUE_NAME

public static final String GTASK_QUEUE_NAME

Camel header name corresponding to X-AppEngine-QueueName header created by task queueing service.

See Also:

Constant Field Values

GTASK_TASK_NAME

public static final String GTASK_TASK_NAME

Camel header name corresponding to X-AppEngine-TaskName header created by task queueing service.

See Also:

Constant Field Values

GTASK_RETRY_COUNT

public static final String GTASK_RETRY_COUNT

Camel header name corresponding to X-AppEngine-TaskRetryCount header created by task queueing service.

See Also:

Constant Field Values

Constructor Detail

GTaskBinding

public GTaskBinding()

Method Detail

writeRequest

public com.google.appengine.api.labs.taskqueue.TaskOptions writeRequest(GTaskEndpoint endpoint,
                                                                        Exchange exchange,
                                                                        com.google.appengine.api.labs.taskqueue.TaskOptions request)

Reads data from exchange and writes it to a newly created TaskOptions instance. The request parameter is ignored.

Specified by:

writeRequest in interface OutboundBinding<GTaskEndpoint,com.google.appengine.api.labs.taskqueue.TaskOptions,Void>

Parameters:

endpoint -

exchange -

request - ignored.

Returns:

a newly created TaskOptions instance containing data from exchange.

readResponse

public Exchange readResponse(GTaskEndpoint endpoint,
                             Exchange exchange,
                             Void response)

Description copied from interface: OutboundBinding

Populates an Exchange from response data and endpoint configuration data.

Specified by:

readResponse in interface OutboundBinding<GTaskEndpoint,com.google.appengine.api.labs.taskqueue.TaskOptions,Void>

Parameters:

endpoint - endpoint providing binding-relevant information.

exchange - exchange to be populated or created (if null) from response data.

response - response to read data from.

Returns:

the populated exchange.

Throws:

UnsupportedOperationException

readRequest

public Exchange readRequest(GTaskEndpoint endpoint,
                            Exchange exchange,
                            HttpServletRequest request)

Replaces the task service-specific headers (X-AppEngine-*) with Camel-specific headers.

Specified by:

readRequest in interface InboundBinding<GTaskEndpoint,HttpServletRequest,HttpServletResponse>

Parameters:

endpoint - endpoint providing binding-relevant information.

exchange - exchange to be populated or created (if null) from request data.

request - request to read data from.

Returns:

the populated exchange.

See Also:

GTASK_QUEUE_NAME, GTASK_TASK_NAME, GTASK_RETRY_COUNT, DefaultHttpBinding.readRequest(HttpServletRequest, HttpMessage)

writeResponse

public HttpServletResponse writeResponse(GTaskEndpoint endpoint,
                                         Exchange exchange,
                                         HttpServletResponse response)

Description copied from interface: InboundBinding

Creates or populates a response object from Exchange and endpoint configuration data.

Specified by:

writeResponse in interface InboundBinding<GTaskEndpoint,HttpServletRequest,HttpServletResponse>

Parameters:

endpoint - endpoint providing binding-relevant information.

exchange - exchange to read data from.

response - to be populated or created (if null) from exchange data.

Returns:

the populated response.

writeRequestHeaders

protected void writeRequestHeaders(GTaskEndpoint endpoint,
                                   Exchange exchange,
                                   com.google.appengine.api.labs.taskqueue.TaskOptions request)

readRequestHeaders

protected void readRequestHeaders(GTaskEndpoint endpoint,
                                  Exchange exchange,
                                  HttpServletRequest request)

writeRequestBody

protected void writeRequestBody(GTaskEndpoint endpoint,
                                Exchange exchange,
                                com.google.appengine.api.labs.taskqueue.TaskOptions request)

getWorkerRoot

protected String getWorkerRoot(GTaskEndpoint endpoint)