Story #9148: As a plugin writer i want to be able to share task resources for reading - Pulp

Actions

Send by e-mail Copy link

Story #9148

closed

Task #9256: [EPIC] Use shared task resources in plugin code

As a plugin writer i want to be able to share task resources for reading

Added by mdellweg over 3 years ago. Updated about 3 years ago.

Status:

CLOSED - CURRENTRELEASE

Priority:

Normal

Assignee:

mdellweg

Category:

Sprint/Milestone:

3.15.0

Start date:

Due date:

% Done:

100%

Estimated time:

Platform Release:

Groomed:

Sprint Candidate:

Tags:

Performance

Sprint:

Sprint 103

Quarter:

Description

The tasking system should be able to allow resources to be shared between tasks if only read access is requested.

The following design should allow to implement this without a migration and in a backwards compatible way:

reuse the reserved_resources_record ListField shared resources will be prefixed by "shared:" exclusive resources will be used as is
dispatch will add another parameter "shared_resources" in a backwards compatible way
workers will augment the list of in_use_resources with a flag if any previous task requested a resource exclusive

Note: shared access that was scheduled after exclusive access still needs to wait. That is, one task requesting exclusive access to a resource will introduce a barrier for all other tasks requesting the same resource in any way.

https://hackmd.io/Y0l9nBm9SFmPiIBXBz8lwQ?view#Idea-Example-with-shared-and-exclusive-locks

Related issues