airship
/
drydock
Code Issues Proposed changes
drydock/drydock_provisioner/statemgmt
History
Scott Hussey a20ecbfba0 Statemgmt access to build data 
Add statemgmt methods for accessing build data
tables.

- Add post_build_data for saving new build data
- Add get_build_data for selecting build data based
  on node name or task ID.
- YAPF formatting that was wider scope than expected

Change-Id: I415eb795e2e5cab6f6a4cc0dc90aa79497c41328
 		2018-01-08 13:57:21 -06:00
..
db Statemgmt access to build data 2018-01-08 13:57:21 -06:00
design YAPF catchup 2017-12-15 15:33:14 -06:00
__init__.py Add Task persistence and KOTH 2017-10-26 14:56:13 -05:00
readme.rst DRYD47 - Task persistance and refactor 2017-10-26 14:54:25 -05:00
state.py Statemgmt access to build data 2018-01-08 13:57:21 -06:00

readme.rst

Statemgmt - Persisted State Management

Statemgmt is the interface to the persistence store for managing task data and build data for nodes. Currently Drydock only supports a Postgres database backend. This module will also resolve design references to retrieve the design data from the specified external reference

Tables

tasks

The tasks table stores all tasks - Queued, Running, Complete. The orchestrator will source all tasks from this table.

result_message

The result_message table is used for storing all of the detailed messages produced while executing a task. These are sequenced and attached to the task when serializing a task.

build_data

The build_data table is used for storing the build history and details of nodes in the site. When a node is destroyed and redeployed, the history will persist showing that transition.

active_instance

active_instance is a small semaphore table so that multiple instances of Drydock can organize and ensure only a single orchestrator instance is executing tasks.

Design References

Rather than Drydock storing design data internally, it instead supports a URI-based reference scheme. The URI should specify the driver and transport details required to source the data. Once the data is retrieved by the driver, it will be sent to an ingester for translation into the internal Drydock object model.

Example design reference URI: deckhand+https://deckhand-api.ucp.svc.cluster.local:8443/e50b4d74-9fab-11e7-b7cc-080027ef795a

Current Drivers

Drydock currently can resolve design references to simple file:// and http:// endpoints with no authentication required. Local files must provide absolute paths.

Planned Drivers

There is planned support for https:// and deckhand+https:// endpoints.