Assets Class

Assets interface

Access to the assets endpoint.

The user is not expected to use this class directly. It is an attribute of the Archivist class.

For example instantiate an Archivist instance and execute the methods of the class:

with open(".auth_token", mode="r", encoding="utf-8") as tokenfile:
    authtoken = tokenfile.read().strip()

# Initialize connection to Archivist
arch = Archivist(
    "https://app.datatrails.ai",
    authtoken,
)
asset = arch.assets.create(...)

class archivist.assets._AssetsPublic(archivist_instance: Archivist)[source]

AssetsReader

Access to assets entities using CRUD interface. This class is usually accessed as an attribute of the Archivist or Public class.

Parameters:: archivist (Archivist) -- Archivist instance

_identity(identity: str) → str[source]: Return fully qualified identity If public then expect a full url as argument

read(identity: str) → Asset[source]

Read asset

Reads asset.

Parameters:: identity (str) -- assets identity e.g. assets/xxxxxxxxxxxxxxxxxxxxxxx
Returns:: Asset instance

class archivist.assets._AssetsRestricted(archivist_instance: Archivist)[source]

AssetsRestricted

Access to assets entities using CRUD interface. This class is usually accessed as an attribute of the Archivist or Public class.

Parameters:: archivist (Archivist) -- Archivist instance

count(*, props: dict[str, Any] | None = None, attrs: dict[str, Any] | None = None) → int[source]

Count assets.

Counts number of assets that match criteria.

Parameters:

props (dict) -- e.g. {"confirmation_status": "CONFIRMED" }
attrs (dict) -- e.g. {"arc_display_type": "door" }

Returns:

integer count of assets.

create(*, props: dict[str, Any] | None = None, attrs: dict[str, Any] | None = None, confirm: bool = True) → Asset[source]

Create asset

Creates asset with defined properties and attributes.

Parameters:

props (dict) -- Properties - usually only the proof_mechanism setting
attrs (dict) -- attributes of created asset.
confirm (bool) -- if True wait for asset to be confirmed.

Returns:

Asset instance

create_from_data(data: dict[str, Any], *, confirm: bool = True) → Asset[source]

Create asset

Creates asset with request body from data stream. Suitable for reading data from a file using json.load or yaml.load

Parameters:

data (dict) -- request body of asset.
confirm (bool) -- if True wait for asset to be confirmed on DLT.

Returns:

Asset instance

create_if_not_exists(data: dict[str, Any], *, confirm: bool = True) → tuple[Asset, bool][source]

Creates an asset and associated locations and attachments if asset does not already exist.

Parameters:

data (dict) -- request body of asset.
confirm (bool) -- if True wait for asset to be confirmed on DLT.

A YAML representation of the data argument would be:

selector:
  - attributes:
    - arc_display_name
behaviours
  - RecordEvidence
attributes:
  arc_display_name: DataTrails Front Door
  arc_firmware_version: "1.0"
  arc_serial_number: das-j1-01
  arc_description: Electronic door entry system to DataTrails France
  wavestone_asset_id: paris.france.datatrails.das
location:
  identity: locations/xxxxxxxxxxxxxxxxxxxxxxxxxx
location:
  selector:
    - display_name
  display_name: DataTrails Paris
  description: Sales and sales support for the French region
  latitude: 48.8339211,
  longitude: 2.371345,
  attributes:
    address: 5 Parvis Alan Turing, 75013 Paris, France
    wavestone_ext: managed
attachments:
  - filename: functests/test_resources/doors/assets/entry-terminal.jpg
    content_type: image/jpg
    attachment: terminal entry

The 'selector' value is required and will usually specify the 'arc_display_name' as a secondary key. The keys in 'selector' must exist in the attributes of the asset.

If 'location' is specified then the 'selector' value is required and is used as a secondary key. Likewise the secondary key must exist in the attributes of the location.

Alternatively the identity of the location is specified - both are shown - choose one.

Returns:: tuple of Asset instance, Boolean is True if asset already existed

list(*, page_size: int | None = None, props: dict[str, Any] | None = None, attrs: dict[str, Any] | None = None)[source]

List assets.

Lists assets that match criteria.

Parameters:

props (dict) -- optional e.g. {"tracked": "TRACKED" }
attrs (dict) -- optional e.g. {"arc_display_type": "door" }
page_size (int) -- optional page size. (Rarely used).

Returns:

iterable that returns Asset instances

publicurl(identity: str) → str[source]

Read asset public url

Reads assets public url.

Parameters:: identity (str) -- assets identity e.g. assets/xxxxxxxxxxxxxxxxxxxxxxx
Returns:: str: publicurl as string

read_by_signature(*, props: dict[str, Any] | None = None, attrs: dict[str, Any] | None = None) → Asset[source]

Read Asset by signature.

Reads asset that meets criteria. Only one asset is expected.

Parameters:

props (dict) -- e.g. {"tracked": "TRACKED" }
attrs (dict) -- e.g. {"arc_display_type": "door" }

Returns:

Asset instance

wait_for_confirmation(identity: str) → Asset[source]

Wait for asset to be confirmed.

Waits asset to be confirmed.

Parameters:: identity (str) -- identity of asset
Returns:: True if asset is confirmed.

wait_for_confirmed(*, props: dict[str, Any] | None = None, attrs: dict[str, Any] | None = None) → bool[source]

Wait for assets to be confirmed.

Waits for all assets that match criteria to be confirmed.

Parameters:

props (dict) -- e.g. {"tracked": "TRACKED" }
attrs (dict) -- e.g. {"arc_display_type": "door" }

Returns:

True if all assets are confirmed.