Re: New LDM server for EMWIN-only feed

On 4/29/07 5:04 PM, "Steve Emmerson" <steve@xxxxxxxxxxxxxxxx> wrote:

> Gilbert,
>> Since I send out emails with tornado warnings and such, if I had
>> NOAAport and EMWIN turned on, I bet I'd get duplicate emails sent out.
>> Different LDM generated numbers (albeit same time stamp on the WMO
>> header). Otherwise, I'd do it.
> If the products are first passed through an LDM system, then you
> shouldn't see duplicate emails because the LDM product-queue will not
> allow a data-product that has the same MD5 signature as a data-product
> that is already in the product-queue to be inserted into the queue.
> Of course, this requires that the data-products have the same MD5
> signature and different  LDM ingesters don't always compute the MD5
> signature the same way.
Another option would be to parse the product before it gets ingested.  For
every product that goes through, dump the VTEC to a file.  If the VTEC
number matches an already issued one, don't ingest.  If there's no match,
then send it on its way.


Ben Cotton, KC9FYX
Unix System Administrator
Department of Earth and
  Atmospheric Sciences
Purdue University

CIVL 4212
O: 765 49-61546
C: 765 404-7986

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