Re: extending HTTPRequest

This is a limitation of the Jython instrumentation engine.

There are a couple of workarounds.

1. You could implement MyHTTPRequest in Java.

2. You could avoid selective instrumentation. For example:

    class MyHTTPRequest(HTTPRequest):
        def __init__(self, url):
            HTTPRequest.__init__(self)
            self.url = url

        def processResponse(self, response):
            # ...

    def createRequest(test, url, headers=None):
        """Create an instrumented HTTPRequest."""
        request = MyHTTPRequest(url=url)
        if headers: request.headers=headers
        test.record(request.GET)
        test.record(request.POST)# etc
        return request


    NB, fix to the MyHTTPRequest constructor to set the URL.

HTH,

- Phil


On 17/03/14 17:33, Joan Picanyol i Puig wrote:
> Hi,
>
> I'm trying to modify a test recorded with the TCPProxy & HTTP filter so
> that all HTTP failures fail the tests.
>
> I thought I'd be as easy as extending HTTPRequest to raise an Exception
> and use it in the createRequest() method, but I'm getting a
> net.grinder.script.NonInstrumentableTypeException: The Jython instrumenters do not support selective instrumenters
>
> I've been unable to gather from
> http://grinder.sourceforge.net/g3/instrumentation.html#Selective+instrumentation
> what the correct approach would be. Any ideas?
>
> For the record, I'm modifying the generated script with:
>
> class MyHTTPRequest(HTTPRequest):
>     def __init__(self, url):
>         # super(MyHTTPRequest, self).__init__()
>         HTTPRequest.__init__(self)
>
>     def processResponse(self, response):
>         if response.getStatusCode >= 400:
>             log("KO %(status)s: %(msg)s" %
>                 {"status": response.getStatusCode(), "msg": response.getText()})
>             raise Exception(response.getText())
>
> def createRequest(test, url, headers=None):
>     """Create an instrumented HTTPRequest."""
>     # request = HTTPRequest(url=url)
>     request = MyHTTPRequest(url=url)
>     if headers: request.headers = headers
>     test.record(request, HTTPRequest.getHttpMethodFilter())
>     return request
>
> And this is the exception I'm getting:
>
> net.grinder.script.NonInstrumentableTypeException: The Jython instrumenters do not support selective instrumenters
>         at net.grinder.scriptengine.jython.instrumentation.dcr.AbstractJythonDCRInstrumenter.disallowSelectiveFilter(AbstractJythonDCRInstrumenter.java:183) ~[grinder-core-3.11.jar:na]
>         at net.grinder.scriptengine.jython.instrumentation.dcr.AbstractJythonDCRInstrumenter.instrument(AbstractJythonDCRInstrumenter.java:167) ~[grinder-core-3.11.jar:na]
>         at net.grinder.scriptengine.AbstractDCRInstrumenter.instrument(AbstractDCRInstrumenter.java:93) ~[grinder-core-3.11.jar:na]
>         at net.grinder.scriptengine.CompositeInstrumenter.instrument(CompositeInstrumenter.java:103) ~[grinder-core-3.11.jar:na]
>
> tks

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