cj-wright / metadatastore

MongoDB-backed metadata storage

metadatastore

NSLS2 Beamlines metadatastore prototype implemented in MongoDB.

metadatastore configuration

Metadatastore requires the following configuration information:

database: metadatastore
port: 27017
host: 127.0.0.1
timezone: US/Eastern

where

• metadatastore can be any valid string
• 127.0.0.1 can be any IP/DNS name
• US/Eastern can be any [of these timezone strings] (https://www.vmware.com/support/developer/vc-sdk/visdk400pubs/ReferenceGuide/timezone.html)

This configuration information can live in up to four different places, as defined in the docstring of the load_configuration function in metadatastore/conf.py. In order of increasing precedence:

1. The conda environment

• CONDA_ENV/etc/{name}.yaml (if CONDA_ETC_env is defined)

1. At the system level

• /etc/{name}.yml

1. In the user's home directory

• ~/.config/{name}/connection.yml

1. Environmental variables

• {PREFIX}_{FIELD}

where

• {name} is metadatastore
• {PREFIX} is MDS and {FIELD} is one of {host, database, port, timezone}