Re: Setting up a Timer in an ActiveX DLL

Thanks for helping me out with this Tony :)

Ok, am happy to split the fuctionality.. no probs there... But, can you
have a VP EXE that has no interface that just runs in the background, once
installed, to just trigger off a timer like that? Obviously, if its an EXE
that a use launches, with an interface and all, no probs, but I didnt know
you could do that with an Interface-Less EXE...

Do I just use an ActiveX Exe? Or just a plain Exe?

Seon Rozenblum
Sector3
Melbourne, Australia
http://www.sector3.com.au

--

Seon Rozenblum
Sector3
Melbourne, Australia
http://www.sector3.com.au


"Tony Proctor" <tony_proctor@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:uXoPXR3EGHA.208@xxxxxxxxxxxxxxxxxxxxxxx
> Sounds like you need to think about logically separating the data
> processing
> (i.e. the collation/extraction of data from logs) from the actual user
> viewing of that data Seon. Unless I'm misunderstanding something, the data
> processing has to occur just once each day, and before anyone looks at the
> stats.
>
> This cannot be done on a timer inside IIS because ASP executes in the
> context of a user request, or more specifically an 'ASP Session'. It can't
> just wake up outside of such a context and do something useful. Also, it's
> bad practice to try and persist objects between HTTP requests, say in the
> Session variables.
>
> This leaves two choices: 1) a separate EXE that wakes up at the
> appropriate
> time and does the data processing itself, or sends an HTTP request to your
> IIS server to achieve it via your ASP code. Alternatively, 2) trigger the
> data processing when the first user attempts to view the stats during the
> day (i.e. no timer at all). You have to be a bit careful in this 2nd case
> as
> there could be multiple users trying to view the stats at the same time,
> and
> your DLL would be executing on multiple threads within IIS.
>
> Tony Proctor
>
> "Seon" <Seon@News> wrote in message
> news:umxyUA0EGHA.3064@xxxxxxxxxxxxxxxxxxxxxxx
>>
>>
>>
>> Ok, let me start again, and explain what I am doing...
>>
>> I am writing a WebStats App... for my web server, and I will also be
>> packaging it up and selling it.
>>
>> Right now, my DLL really does nothing at all that requires it to run
>> under IIS... all it does right now is extract/collate data from the
>> logs, and write specific thinmgs into an access database, via
>> ADODB/ODBC...
>>
>> Eventually, it will also handle login/domain access via ASP, and I will
>> also encapsulate a lot of the back end code for the Stats DHTML
>> generation within it to prevent clients from playing with/breaking the
>> package.
>>
>> basically, I just want my DLL triggered every morning to collate the
>> previous dayus logs form all domains being tracked.
>>
>> It all works fine now, apart from the auto running of itself every
>> morning.
>>
>> So... Can an EXE be used instead of the DLL? Can I still access my
>> classes the same way (Via ASP), and if so, can the EXE have a timer on a
>> form (that never gets seen) run this way under IIS?
>>
>> Though I am a very capable web developer, and have no dramas with
>> VBScript/JavaScript/ASP, and have written COM DLL's for IIS before as
>> basic wrappers for other DLLs, I have never written something like this
>> that has to automate itself.
>>
>> I dont want it running under windows schedule as it is something that
>> needs to be self sufficient, as it will be a product I will be selling,
>> and I want the installation to be quick and simple, and the package to
>> work in the simplest way possible.
>>
>> I hope this clarifies things a bit...
>>
>>
>> *** Sent via Developersdex http://www.developersdex.com ***
>
>


.

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