org.eclipse.smila.taskmanager.httphandler

Class TaskStateHandler

java.lang.Object

org.eclipse.smila.http.server.util.ARequestHandler

org.eclipse.smila.http.server.json.JsonRequestHandler

org.eclipse.smila.taskmanager.httphandler.TaskStateHandler

All Implemented Interfaces:

HttpHandler, RequestHandler

public class TaskStateHandler
extends JsonRequestHandler

Implements the handling of HTTP requests for the task state API. URL pattern: smila/tasks/

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	PARAM_RETURN_DETAILS key for the returnDetails request parameter.

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

FACTORY, HEADER_REQUEST_HOST, HTTP_UTILS

Constructor Summary

Constructors

Constructor and Description
TaskStateHandler()

Method Summary

Methods

Modifier and Type	Method and Description
protected int	getErrorStatus(java.lang.String method, java.lang.String requestUri, java.lang.Throwable ex) Adds HTTP result code 400 ("BAD_REQUEST") for IllegalArgumentException to the exception handling of JsonRequestHandler.getErrorStatus(String, String, Throwable).
protected boolean	isValidMethod(java.lang.String method, java.lang.String requestUri) Checks if the handler allows the HTTP method.
java.lang.Object	process(java.lang.String method, java.lang.String requestUri, Record inputRecord, HttpExchange exchange) process input record and return result object.
void	setTaskManager(TaskManager taskManager)
void	unsetTaskManager(TaskManager taskManager)

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

getRequestHost, getSuccessStatus, 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

Field Detail

PARAM_RETURN_DETAILS

public static final java.lang.String PARAM_RETURN_DETAILS

key for the returnDetails request parameter.

See Also:

Constant Field Values

Constructor Detail

TaskStateHandler

public TaskStateHandler()

Method Detail

process

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

process input record and return result object. Override this method in your handler if you need access to HttpExchange object, e.g. to read http header fields

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.

exchange - http exchange object, contains e.g. the http header fields

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 IllegalArgumentException to the exception handling of JsonRequestHandler.getErrorStatus(String, String, Throwable).

Overrides:

getErrorStatus in class JsonRequestHandler

Parameters:

method - HTTP method

requestUri - request URI

ex - an exception

Returns:

error status code.

See Also:

HTTP_UTILS#getErrorStatus(String, String, Throwable)

isValidMethod

protected boolean isValidMethod(java.lang.String method,
                    java.lang.String requestUri)

Checks if the handler allows the HTTP method. GET and POST are currently the only valid methods.

Overrides:

isValidMethod in class JsonRequestHandler

Parameters:

method - HTTP method

requestUri - request URI

Returns:

true if the method can be used for the URI, else false.

setTaskManager

public void setTaskManager(TaskManager taskManager)

Parameters:

taskManager - the reference to the JobManager service.

unsetTaskManager

public void unsetTaskManager(TaskManager taskManager)

Parameters:

taskManager - the reference to the current JobManager service.