start_campaign: error appear with id_in filter

[nicolasGibaud7]

The following error appear after using start_campaign method on a campaign which use id_in filter :

mbed_cloud.exceptions.CloudValueError: (400) 'None' Invalid key 'id__in' for filter attribute; must be one of:
dict_keys(['account_id', 'bootstrapped_timestamp', 'created_at', 'custom_attributes', 'deployed_state', 'last_deployment', 'description', 'device_class', 'id', 'manifest_url', 'mechanism', 'mechanism_url', 'name', 'host_gateway', 'device_type', 'serial_number', 'state', 'updated_at', 'vendor_id', 'alias', 'bootstrap_certificate_expiration', 'certificate_fingerprint', 'certificate_issuer_id', 'connector_certificate_expiration', 'device_execution_mode', 'firmware_checksum', 'manifest_timestamp', 'claimed_at'])

But on the Pelion portal, it's possible to start that campaign and to update filtered device firmware.

[madchutney]

@nicolasGibaud7 Could you please provide an example of your code that causes the error?

[nicolasGibaud7]

Here is an example of my code :

def update_devices(self, devices_id):
        manifests = self.api_update.list_firmware_manifests()
        if "Manif 2" in [manifest.name for manifest in manifests]:
            for manifest in manifests:
                if  manifest.name == "Manif 2":
                    used_manifest = manifest
        else:
            print("Unknown manifest")
            
        devices_filter = ",".join(devices_id)
        update_campaign = self.api_update.add_campaign(
            name="update_campaign",
            device_filter =  { "id": {"$in": devices_filter}},
            manifest_id = used_manifest.id
        )
        print("Start update campaign {} associated to the manifest {}".format(update_campaign.id, update_campaign.manifest_id))
        try:
            self.api_update.start_campaign(update_campaign)
        except CloudValueError:
            pass

The method start_campaign is working when I filter just one device with the id_eq filter but it's impossible to start the campaign when I filter multiple devices with the id_in filter.

[madchutney]

The APIs can have quite tricky syntax but it looks like your code is correct. The only thing I can suggest is that you try the Foundation Interface which has a helper method to create filters. There is some documentation here:

• https://armmbed.github.io/mbed-cloud-sdk-documentation/?python#launching-a-firmware-update-campaign

How to create in filters is described here:

• https://armmbed.github.io/mbed-cloud-sdk-documentation/?python#filtering-entities

I hope this helps

[nicolasGibaud7]

Thanks for your answer, It works with the filter helper provided by the foundation interface as you said. However, I still don't understand why the filter id_in wasn't recognized by the start_campaign method.