Depositor DB Additions

We want to control the distribution of Bags in Chronopolis on a bit finer of a level by controlling which nodes a Bag will replicate to based on the Depositor. In order to do this, we will want to make the Depositor a more concrete entity in the database, which will in turn have some cascading effects on the Bag model. The DB Entity is still being fleshed out, but should be complete shortly after some discussion with the group about what we want to capture.

Depositor Table

Field	Type
id	bigint
source_organization	Text
namespace	varchar(255)
created_at	Timestamp
updated_at	Timestamp

Depositor Contact Table

field	type
id	bigint
depositor_id	bigint
contact_name	Text
contact_phone	Text
contact_email	Text

Depositor/Node Join Table

Field	Type
depositor_id	bigint
node_id	bigint

Bag Entity Changes

Field	Old Type	New Type
depositor	String	bigint
requiredReplcations	int	-

Note that by removing the requiredReplications field, we need to update the process for a Bag to move into the PRESERVED state

Work

Migrations

• Create depositor tables (depositor, contact, depositor/node join table)
• Indices for depositor tables (non-transactional, easier to have it be separate)
• Create default depositors from the current set of known namespaces
• Create default depositor distributions from the current set of replications
• Update bag table to include a depositor_id column
• Insert depositor_ids into bag table
• Drop depositor column on bag table

Entity Updates

• Depositor entity
• Bag updates
  • Depositor
  • deprecate requiredReplications

Rest Model Updates

• Bag serializer needs to use Depositor entity to get the namespace, allows compatibility with previous versions of the model

Depositor serializer