Snap integration through Snap devices

Is it possible that PyAlarm devices interact with the Snap system through Tango instead of a MySQL connection? Soleil is indeed using a Oracle snapshot database.

Sample code ( tested with Snap version of https://www2.synchrotron-soleil.fr/controle/packages/ArchivingRoot-22.1.0.zip):

• Create a context

import PyTango
import sys
 
try:
    manager = PyTango.DeviceProxy("archiving/snapmanager/1")
    result = manager.CreateNewContext(["ga","testica", "0", "2020-09-26", "test", "description", "ans/ca/machinestatus/current"])
    print "Context created = ", result
 
except  PyTango.DevFailed:
            exctype , value = sys.exc_info()[:2]
            print "Failed with exception !", exctype
            for err in value :
                 print "---ERROR ELEMENT-------"
                 print err

• Create a snapshot from a context

import PyTango
import sys
import time
 
try:
    archiver = PyTango.DeviceProxy("archiving/snaparchiver/1")
    context_id = 77
    archiver.TriggerLaunchSnapShot(context_id)
 
    # wait for snapshot termination
    while (archiver.state() == PyTango.DevState.RUNNING):
        time.sleep(0.05)
 
    # get its id
    snap_id = archiver.GetSnapShotResult(context_id)
    print "LaunchSnapShot finished, snaphot id =", snap_id
    # if an error has occured, state of archiver is FAULT with error message in status
    print archiver.state(), archiver.status()
 
    # update comment, only available on manager device
    manager = PyTango.DeviceProxy("archiving/snapmanager/1")
    manager.UpdateSnapComment(([snap_id], ["updated comment"]))
 
except  PyTango.DevFailed:
            exctype , value = sys.exc_info()[:2]
            print "Failed with exception !", exctype
            for err in value :
                 print "---ERROR ELEMENT-------"
                 print err

• Get a snapshot data

import PyTango
import sys
import time
 
try:
    extractor = PyTango.DeviceProxy("archiving/snapextractor/1")
    attributes = extractor.GetAttributeListForContext(77)
 
    for i in range(len(attributes)):
        value = extractor.GetSnapValue(["99057", attributes[i]])
        print attributes[i] , " = " , value
 
except  PyTango.DevFailed:
            exctype , value = sys.exc_info()[:2]
            print "Failed with exception !", exctype
            for err in value :
                 print "---ERROR ELEMENT-------"
                 print err