Tango in a Nutshell

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Tango in a Nutshell
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Tango in a Nutshell

• What is Tango?
• Who dances the Tango?
• How to dance the Tango?

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What is Tango?

• A toolbox to implement control systems using
  CORBA as the transport layer
• A specialization of CORBA adapted to Control
• Hides the complexity of Corba to the programmer
• Adds specific control system features

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CORBA

• Common Object Request Broker Architecture
• CORBA defines the ORB a way to call an object
  method wherever the object is
• In the same process
• In another process
• In a process running somewhere on the network
• CORBA also defines services available for all
  objects (naming, notification, event)

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CORBA

• CORBA allows mixing languages
• a client is not necessarily written in the same
  language as the server
• CORBA uses an Interface Definition Language (IDL)
• CORBA defines bindings between IDL and the
  computing languages (C, Java, Python, Ada, .)

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Tango and CORBA

• Tango encapsulates the CORBA communication
  protocol
• Allows the use of other communiction protocols
• Tango uses a narrow CORBA interface
• All objects on the network have the same
  interface
• Allows the use of generic applications
• Avoids recompilation when new objects are added

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What is Tango?

• A software bus for distributed objects

Java, C,Python
Linux, Windows, Solaris
Archiving Service
TANGO ATK Java
Qtango C
Scan Service
TANGO Software Bus
Dev
Dev
Dev
Dev
Dev
Dev
Dev
OPC
Linux, Windows, Solaris
Labview RT
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What is Tango?

• Provides an unified interface to devices
  (objects) on the network
• hiding how they are connected to a computer
  (serial line, USB, sockets, )
• Hides the network
• Location transparency
• Genericity
• APIs for C, Python and Java
• For the server and the client side

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What is Tango?

• More than only a software bus
• Database for persistancy
• Code generator to implement networked devices
• Central services (Archive, snapshots, logging,
  alarms, scans, security, )
• Application Toolkits (Java, C and Python)
• Comercial bindings (Labview, Matlab, IgorPro)
• Control system administration (Starter, Astor)
• Hundrets of available classes
• Web interfaces (PHP, Java)

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Who dances the Tango?
2007
2002
2004
2000
ALBA
2005
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Who dances the Tango?

• Tango_at_Elettra
• Used for accelerator control
• Development of
• The Python interface (Release 2.x)
• An alarm service
• Canone A WEB interface using PHP
• E-Giga A WEB interface above the Tango archiving
  service
• QTango C application toolkit using Qt

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Who dances the Tango?

• Tango _at_ Soleil
• Used for accelerator and experiment control
• Development of
• Logging service
• Archiving service (Tango HDB) using ORACLE or
  MySQL
• Snapshot service also using ORACLE or MySQL
• Comercial bindings (Labview, Matlab, )
• WEB protocol for the java application toolkit
  (ATK)

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Who dances the Tango?

• Tango _at_ Alba
• Used for accelerator and experiment control
• Development of
• Python device servers (PyTango release 3.x)
• Sardana Control software for experiments
• Python application toolkit using Qt
• Tango_at_DESY
• Used for experiment control at the new PETRAIII
  synchrotron

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Who dances the Tango?

• Tango _at_ ESRF
• Used for accelerator and experiment control
• Development of
• The Tango core libraries (C and Java)
• Pogo Code generator
• Jive Configuration tool
• Astor / Starter administration service
• Java application toolkit

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How to dance the Tango?

• Lets dance together
• Two collaboration meetings per year
• A mailing list (tango_at_esrf.fr)
• One Tango coordinator per site
• WEB site to download code, get documentation,
  search the mailing list history, read
  collaboration meeting minutes,
• http//www.tango-controls.org
• Collaborative development using SourceForge

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How to dance the Tango?

• You can download Tango from
• http//www.tango-controls.org/download
• As a source package for UNIX like OS
• As a Windows binary distribution
• For Unix (and co), do not forget to first
  download, compile and install
• omniORB
• omniNotify
• For Windows all libraries and binaries for
  omniORB and omniNotify are included in the
  distribution.

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How to dance the Tango?

• A list of all Tango classes is available with
  their documentation under
• http//www.tango-controls.org/device-servers
• Common interest class sources are stored on a CVS
  server hosted by SourceForge
• Project name tango-ds
• http//sourceforge.net/projects/tango-ds/
• Local class sources are stored in a local CVS
  repository at each institute