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ChannelFinder Client

ChannelFinder Client. Kunal Shroff EPICS Spring Collaboration Meeting, October 2010 BNL. ChannelFinder:. A Directory Service Generic No dependency on installation and local conventions Simple and Fast Use standards wherever possible Provides “query-by-functionality”. ChannelFinder.

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ChannelFinder Client

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  1. ChannelFinder Client Kunal Shroff EPICS Spring Collaboration Meeting, October 2010 BNL

  2. ChannelFinder: • A Directory Service • Generic • No dependency on installation and local conventions • Simple and Fast • Use standards wherever possible • Provides “query-by-functionality”

  3. ChannelFinder • REST style web service • URI specifies the data element to operate on • HTTP method specifies the operation • Payload (XML, JSON) contains object representation • RDB • Contains directory data • Use LDAP to query user-group relations

  4. ChannelFinderAPI • http://channelfinder.sourceforge.net/ • Pure Java API library • Query • Add/Remove channels, Properties, Tags • Set/Update channels, Properties, Tags • RESTful web service client - Jersey • Test Driven Development • Junit • corbertura

  5. ChannelFinderAPI • Benchmark tests

  6. Channels • What is a channel • Meta-Data not included in the epics Database • What are its components • Channel (unique names) • Each Channel has an arbitrary number ofProperties (name/value pairs) andTags (names) • Each Channel, Property, or Tag has an Owner (group) to allow basic access control • All names and values are strings • org.csstudio.utility.channel

  7. ChannelFinder Viewer • CSS  Display  ChannelFinderViewer • Searching • Name, Property value, Tags • Regular Expressions using “*”, “?”

  8. ChannelFinder Viewer

  9. Acknowledgement • Ralph Lange (Directory Service) • Gabriele Carcassi (App/Build Servers, IRMIS) • Don Dohan (IRMIS)

  10. Questions

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