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Database Reports and the IOC Crawler

Database Reports and the IOC Crawler. Presented by Katia Danilova 09/01/2005. Please. Hold the questions and comments, write down your questions and suggestions! discussion is planned after the presentation we can use your notes to address the problems later Thank you!.

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Database Reports and the IOC Crawler

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  1. Database Reports and the IOC Crawler Presented by Katia Danilova 09/01/2005

  2. Please • Hold the questions and comments, write down your questions and suggestions! • discussion is planned after the presentation • we can use your notes to address the problems later • Thank you!

  3. Why to discuss Reports and Crawler together: • They are “complimentary” programs providing access to IOC configuration info for the client (user) • Crawler takes IOC data from EPICS servers and puts them into the database • Web-based reports take this data from the database for the end user • ROCS system is under development • Reports by request (in the form of spreadsheet or flat file) are possible

  4. Data Flow View:

  5. Crawler • Crawler is a computer program which “crawls” through the IOC configuration related files on EPICS boot servers, collects the information, constructs a profile for each IOC, and automatically saves this data in a relational database. • Language used: • Initially: Java (Jeff Patton) • Currently: Perl (Don Dohan, Jeff Patton, Greg Lawson) • Relational Database used: • mySQL (Argonne) • Oracle (SNS)

  6. Collaboration • Participants: Argonne and SNS • Don Dohan (Argonne) • Coles Sibley, Jeff Patton, Greg Lawson (SNS) • Crawler is a part of IRMIS (Integrated Relational Model of Installed Systems ) • Basic package is made in Argonne • Other labs can add the modules to adjust the program to their realities – this is what Greg Lawson does for Control Systems

  7. Examples of files parsed: • Startup.cmd • Bootline • St.cmd • iocInfo/ • bspVersion • epicsVersion • vxVersion… • pvList • db, dbd template files

  8. Why Controls Systems care about the Crawler: • the latest information (about each IOC, or how many people use this or that version, or software changes…) is easily accessible through reports and viewing programs • Some problems are already identified: • Mistakes/typos in PV names • Can tell when somebody is not following the naming standards • In a case of disaster recovery: can look at the last configuration and reconstruct IOC from the DB • If a bug in a certain version of driver found: can find all IOC that require manual changes

  9. In perspective • Rather than pulling info from IOC, info can be pushed into IOC from the database automatically • If global changes are required: all IOC can be pushed at once by making changes in one place in the DB and can be loaded automatically instead of restoring everything manually • If a bug found: changes to all IOC that use the same driver can be done at the same time • If in addition to writing to a disk all IOC info goes to DB, then it can be used for logging almost real time • DB applications that talk directly to IOC can be created

  10. Current Issues to solve for developers: • Crawler is under development => • Every time Argonne makes changes to improve the program, SNS has to make adjustments (Jeff Patton has to adopt all the changes to Oracle) • Need to develop GUI viewing programs (like Archiver and ROCS) • Currently, when IOC engineers make changes in a file structure, or just move the files, crawler needs to be updated to be able to find info

  11. For the IOC engineers: • Keep the standard organization of the directories, otherwise crawler does not know were to look for the files. Order is important! • Keep the standard structure of the files the program parses, otherwise crawler can not find data. Order is important! • If there are no concrete standards yet, probably it’s the time to develop them?

  12. My sources: • IRMIS collaboration meeting • Relational Database Collaboration @ Argonne National Laboratory.ppt • Argonne National Laboratory: IRMIS PV Crawler.ppt • Coles Sibley. SNS Requirements.ppt • Jeff Patton. ORNL EPICS RDB Tools.ppt • Jeff Patton: Extending RDB Core.ppt • An overview of IRMIS • Interviews with J. Patton, G. Lawson, C. Sibley, E. Williams

  13. Crawler Animation: • is a student project completed by Katia Danilova for Flash class at UT, spring 2005 • Requirement: develop an animated web-based instructional/ educational unit (3-5 min length, funny creatures designed) • This unit: • shows a little of how the IOC boots up • shows how the crawler gathers IOC configuration info from the EPICS IOC boot server • shows how a client, for example a web based report, gets an updated info from a DB Crawler Animation

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