connect

connect(service, id)

Establishes a connection to a Jnu-backed database, ensuring basic network connectivity, downloading (and caching) the database schema for service, and determining an identity to sign queries with. This is the usual way to obtain a Connection().

Arguments:

• service (string) – The service whose database to connect to. Must be a key in dcpConfig that has a services.jnu entry – in the default configuration, one of ‘scheduler’, ‘portal’, or ‘pxAuth’.

• id – Optional. A Keystore or PrivateKey to sign queries as. If omitted, waits for a dcp/identity session to be established (identity.waitForSession()) and uses identity.get() – see the Identity API.

Return type:

Promise<Connection>

The schema for a given service is downloaded once per process and cached; every connect() call for the same service reuses it.

Example

const jnu = require('dcp/jnu');

const db = await jnu.connect('portal');
console.log(db.schema.tables.jobs);