Init on-prem instance#

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!lamin login testuser1

import lamindb_setup as ln_setup

Local database & storage#

SQLite#

ln_setup.init(storage="./mydata")

This automatically assigns an instance name that equals the name of the storage root along with a few other settings:

ln_setup.settings.instance

If you want to register the instance on the hub at lamin.ai, use lamindb_setup.register().

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from pathlib import Path

assert ln_setup.settings.instance.storage.is_cloud == False
assert ln_setup.settings.instance.owner == ln_setup.settings.user.handle
assert ln_setup.settings.instance.name == "mydata"
assert ln_setup.settings.storage.root.as_posix() == Path("mydata").resolve().as_posix()
assert ln_setup.settings.storage.id is not None
assert (
    ln_setup.settings.instance.db
    == f"sqlite:///{Path('./mydata').resolve().as_posix()}/{ln_setup.settings.instance.id.hex}.lndb"
)

See the info on the current instance & user:

ln_setup.settings

To delete an instance, call:

ln_setup.delete("mydata", force=True)
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from lamindb_setup.core._settings_store import instance_settings_file

settings_file = instance_settings_file("mydata", "testuser1")
assert settings_file.exists() == False

Postgres#

from laminci.db import setup_local_test_postgres
pgurl = setup_local_test_postgres()

A connection string for postgres looks like this:

'postgresql://postgres:pwd@0.0.0.0:5432/pgtest'

You can call init like so:

ln_setup.init(storage="./mydatapg", db='postgresql://postgres:pwd@0.0.0.0:5432/pgtest')

Your instance name will then be pgtest!

Custom instance name#

Instead of having the instance name be auto-determined from storage or db, you can provide a custom name:

ln_setup.init(storage="./mystorage", name="mydata2", db=pgurl)

Configure with default cloud storage#

AWS#

You need to have access to AWS S3 (run pip instsall awscli and aws configure).

Consider the special case of a cloud SQLite instance:

ln_setup.init(storage="s3://lamindb-ci/mydata")

Under the hood LaminDB then keeps track of a cloud & and a synched local SQLite file.

# you can inspect these:
ln_setup.settings.instance._sqlite_file
ln_setup.settings.instance._sqlite_file_local

GCP#

You need to authenticate for Google Cloud.

  • Either, set the environment variable export GOOGLE_APPLICATION_CREDENTIALS=<HOME-DIR>/.lndb/<GOOGLE CLOUD PROJECT>.json.

  • Alternatively, if you set up the gcloud CLI, log in with gcloud auth application-default login.

ln_setup.init(storage="gs://lamindb-ci-us")