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Musst Device Server

Launching the device server

Let’s make it easy and see how to launch the device server:

(base)  user@beamline:~/bliss$ conda activate bliss

(bliss) user@beamline:~/bliss$ Musst -?
Can't build connection to TANGO database server, exiting

(bliss) user@beamline:~/bliss$ export TANGO_HOST=localhost:20000

(bliss) user@beamline:~/bliss$ Musst -?
usage :  Musst instance_name [-v[trace level]] [-nodb [-dlist <device name list>]]
Instance name defined in database for server Wago :
        musst_server

(bliss) user@beamline:~/bliss$ Musst musst_server
Unknown exception while trying to fill database cache...
Ready to accept request

Different run possibilities

The Musst Device server can be run:

  • with Beacon
  • as a replacement of Tango device server registered in the Tango database

Configuration

With Beacon

The configuration of this device server is written inside Beacon as an yaml file, here we have the example:

device:
- tango_name: id00/musst/1
  class: Musst
  properties:
    beacon_name: mymusst
personal_name: musst_test
server: Musst
  • tango_name: is the Tango Fully Qualified Domain Name (FQDN) in the form domain/family/member
  • personal_name: this will be the name you will use in the command line to launch the Device Server using Wago personal_name
  • beacon_name: should coresponds to another Beacon object defined in yml that will define Wago mapping and host. Refer to the documentation for creating the Musst bliss configuration Musst

This is the most obvious solution where the device server configuration is at minimum.

Be aware that with this solution you will have to specify connection settings and mapping inside the Bliss wago client yml configuration.

The other solution is to provide full configuration inside this yml file (give the example contained in default_session):

device:
- tango_name: id00/musst/1
  class: Musst
  properties:
personal_name: musst_test
server: Musst

  • tango_name: is the Tango Fully Qualified Domain Name (FQDN) in the form domain/family/member

  • personal_name: this will be the name you will use in the command line to launch the Device Server using Wago personal_name

Bliss MusstDS as old C++ server replacement

If we want to use BLISS MusstDS as a replacement for an existing C++ server we just have to register the Tango Server through Jive or similar and than follow the example on first paragraph “Launching the device server”.

After doing we will have to create/fill the properties:

And finally restarting the device server should do the job.