piscada-foresight 0.3.1

Library for Piscada Foresight; Access knowledge-graph and timeseries data.

Piscada Foresight

Access knowledge-graph and timeseries data.

Overview

This library provides access to the knowledge-graph and timeseries data in the Foresight platform. It implements a Transport using HTTPX to be used with the GQL GraphQL client. It provides the following modules:

• data module: Read timeseries values as Pandas DataFrames or Series

  • get_value(): Get latest value before a given time
  • get_values(): Get values between start and end time
  • get_all_values(): Extract all values from a graph query response

• domains module: Access domain definitions and trait hierarchies

  • Domain class: Contains traits and relationships for a domain
    • get_trait_by_id(): Gets a trait by its ID
  • get_domains(): Retrieve list of all available domains
  • get_trait_by_id(): Get a trait from any domain by its ID string
  • get_parent_traits(): Get all parent traits for a given trait

• http module: OAuth2 authenticated transport

  • ForesightHTTPXTransport class: HTTPX transport with OAuth2 authentication
    • connect(): Establish authenticated connection

Installation

pip install piscada-foresight

You will need access to a Piscada Foresight instance. The library uses the OAuth2 Authorization Code Flow with Proof Key for Code Exchange (PKCE) to act on behalf of your user. After an initial interactive login, the library persists the session state in $HOME/.<client_id>_state and will use that to authenticate non-interactive the next time.

Usage

from datetime import datetime, timedelta, timezone
from uuid import UUID

from gql import Client

from piscada_foresight.data import get_value, get_values
from piscada_foresight.http import ForesightHTTPXTransport

# Create a transport with authentication and a GraphQL client:

transport = ForesightHTTPXTransport("foresight.piscada.cloud")
fs_client = Client(transport=transport, fetch_schema_from_transport=False)

# Retrieve timeseries values for a specific entity:

get_values(
    fs_client,
    UUID("ENTITY_ID"),
    datetime.now(tz=timezone.utc) - timedelta(hours=8),
)

Contributing

Contributions are welcome! You can contact us at [e-mail].

Support

If you have any questions, issues, or suggestions, please contact us at [e-mail].

Copyright

© Piscada AS 2024