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<== Date ==> <== Thread ==>

Subject: StripTool and History
From: "Paul E. Reimer" <reimer@anl.gov>
To: tech-talk@aps.anl.gov
Date: Sat, 31 Mar 2012 15:57:04 -0500
Hello,

Is it still the case that StripTool will not work with a History?

Thanks,

Paul

Subject: Re: StripTool with history for 3.14
From: Kay-Uwe Kasemir <kasemirk@ornl.gov>
To: Evgeniy Tikhomolov <etikhomolov@solar.stanford.edu>
Cc: EPICS Tech-Talk <tech-talk@aps.anl.gov>
Date: Thu, 09 Mar 2006 13:50:22 -0500

On Mar 9, 2006, at 13:20 , Evgeniy Tikhomolov wrote:


Has anybody converted StripToll to build with EPICS release 3.14 ?

Without history feature it can be built with 3.14.7 on SL4 without problems. But when I try to build it with Channel Archiver (which was built successfully,
thanks Gasper Pajor) ...
It can not find osiTime.h (just because it does not exist for 3.14). Then it complains:


../StripHistoryLANLmodif.cc:144: no matching function for call to `
  ChannelIterator::getValueAfterTime(const osiTime&, ValueIterator&)'

and other.

It would be nice to get updated StripTool and not to go through all these hedges.
There is currently no support for the striptool history module
interfacing with the R3.14 ChannelArchiver.

Technical reasons include:
- Requests to the data server should be handled asynchronously,
because they can take time.
The striptool history module looks like it supports async operation.
StripHistory.h claims that StripHistory_fetch() is allowed to return "..PENDING"
and invoke a callback when done.
However, the provided callback is 0, and "..PENDING" isn't really supported.
- Striptool has no defined interface where a history module could
be configured. For the R3.14 archiver, you have to configure the data server
URL and the archive key.
There are versions of Striptool with #ifdefs that create
an archive source configuration dialog specific to e.g. a DESY data server,
but I don't want to hack and possibly break Striptool
to sneak in support for the R3.14 archive data server.


So far, nobody has had time to fix this.

-Kay


-- 
Paul E. Reimer, Physicist   +1-630-252-4037 (office)
Physics Division, Bldg 203  +1-630-252-3903 (fax)
9700 S. Cass Ave.           +1-630-840-5708 (Fermilab)
Argonne, IL  60439          reimer@anl.gov
USA                         www.phy.anl.gov/mep/staff/Reimer_P_E.html
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Replies:
Re: StripTool and History Kasemir, Kay

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