I want to use a python script to add and remove device descriptors. It appears that the IScriptDeviceRepository Interface added in 3.5.9.0 gives me the methods I require, but I've been unable to work out how to get an object that implements the interface.

I've got a bit further now, I found a global named . What I want to do is to ensure that I remove old versions of a set of device descriptors and add in new ones. I've managed to find the devices I want to remove, however either removing or importing devices is giving problems.

devices = device_repository.get_all_devices("MyUniqueText")
for device in devices:
    print("id: ", device.device_id, " info= ",device.device_info.name)
    device_repository.remove_device(device.device_id, None, True)
for file in glob.glob("artefacts/*.devdesc.xml"):
    device_repository.import_device(file, None, True)
    print("Installed "+ file)

Running this gives the error below for the line with remove_device, if I comment that line I get the same for import_device.

System.ArgumentNullException: Traceback (most recent call last):
  File "C:\Users\David\Documents\scripts\CODESYS\CheckoutProject.py", line 50, in <module>
TypeError: Value cannot be null.
Parameter name: source

However the documentation for the source parameter in import_device and remove_device both say

Zitat:
Remove the device from this repository source. If null the device is removed from the default repository source.

I've spent quite a while digging through the API's and I haven't managed to work out another value that I could use for the parameter.
Any help would be much appreciated.

Hi DavidCozens.

DavidCozens hat geschrieben:
However the documentation for the source parameter in import_device and remove_device both say
I've spent quite a while digging through the API's and I haven't managed to work out another value that I could use for the parameter.
Any help would be much appreciated.

It is a bug. I added the Jira CDS-49921 to our bug tracking, so it will be fixed eventually.

At the moment you need to specify a repository source to import or remove a device/vendor description.

BR
Martin

M.Keller hat geschrieben:
Hi DavidCozens.
It is a bug. I added the Jira CDS-49921 to our bug tracking, so it will be fixed eventually.
At the moment you need to specify a repository source to import or remove a device/vendor description.
BR
Martin

Hi Martin,

Thank you. I have however been unable to find an API call to give me access to any repository source. How do I find the default repository source?

regards David

Hi DavidCozens.

You get the list of repository sources from the property (see IScriptRepositorySourceList) of the device repository.

sources = device_repository.sources
mySource = sources["My Device Repository"]

BR
Martin

M.Keller hat geschrieben:
Hi DavidCozens.
You get the list of repository sources from the property (see IScriptRepositorySourceList) of the device repository.

sources = device_repository.sources
mySource = sources["My Device Repository"]

BR
Martin

Hi Martin,

Thank you - I have that part of my script working now.

regards David

Hi,
sorry for capturing this topic, but my question might fit to that.

What's the best way to remove all versions of all devices from the repository, which belong
to a certain vendor?

I did not really find an interface that lists all installed devices of a specific vendor.

Regards

Hi jmohre.

jmohre hat geschrieben:
What's the best way to remove all versions of all devices from the repository, which belong
to a certain vendor?

The following example code iterates through the device sources, gets a list of all devices for a specific vendor and removes them from the device repository:

try:
   for src in device_repository.sources:
      devs = device_repository.get_all_devices(src)
      devsVendor = devs.get_devices_of_vendor("Some company")
      try:
         for dev in devsVendor:
            device_repository.remove_device(dev.device_id, src, False)
      except:
         print("Failed to remove device description")
finally:
   # Save the device cache because we used the remove_device without
   # saving the device cache because it is faster
   device_repository.save_device_cache()

The call of is important because otherwise the devices still appear in the repository after a restart of CODESYS but the files of the device were deleted.

BR
Martin

Thanks Martin,

I found "get_devices_of_vendor" this morning - it is a bit hidden .
But I did not take care of the cache issue and the different repositories.

Regards

Jörg