Project

General

Profile

Feature #11299

generic plugin loader framework

Added by Sage Weil almost 9 years ago. Updated over 4 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
Development
Tags:
Backport:
Reviewed:
Affected Versions:
Pull request ID:

Description

our abstract interfaces follow the same pattern:

- abstract pure virtual C++ class interface (e.g., Messenger)
- several implementations that are children of that interface
- each implementation has a simple (e.g., "simple", "async", "xio")
- a factory function that instantiates an instances (e.g., staic Messenger* Messenger::create(string type))

Create a generic framework that can load instances at runtime from .so's:

- a "class" name (like "msgr")
- a location where the .so's are found (default /usr/lib/ceph/$class/$name.so) ?
- .so init functions call a generic function to register themselves (ceph_register_plugin(class, name, create_fn_pointer))
- allow statically compiled instances as well. probably just add a final line to the existing factory function that asks the plugin driver to try to instantiate something (in case the existing ones could handle it).
- do strict version checks as we do with the EC plugins
- move the keyvaluedb, objectstore, and messenger interfaces over to this
- confirm that we can do the same with the ec plugins

Questions:

- sometimes constructors take some extra arguments. how do we pass that through to the plugins? use a void *, and for each interface define a struct that includes any initialization stuff? (the plugins will be compiled against a specific version of this interface anyway)

History

#1 Updated by Sage Weil almost 9 years ago

  • Description updated (diff)
  • Source changed from other to Development

#3 Updated by Sage Weil almost 9 years ago

  • Target version changed from v0.95 to v9.0.2

#4 Updated by Samuel Just almost 9 years ago

  • Target version changed from v9.0.2 to v9.0.3

#5 Updated by Samuel Just almost 9 years ago

  • Target version changed from v9.0.3 to v9.0.4

#6 Updated by Sage Weil almost 9 years ago

  • Status changed from New to In Progress

#7 Updated by Samuel Just almost 9 years ago

  • Target version changed from v9.0.4 to v9.0.6

#8 Updated by Samuel Just over 8 years ago

  • Target version changed from v9.0.6 to v9.0.7

#9 Updated by Samuel Just over 8 years ago

  • Status changed from In Progress to 12

#10 Updated by Samuel Just over 8 years ago

  • Target version deleted (v9.0.7)

#11 Updated by Patrick Donnelly over 4 years ago

  • Status changed from 12 to New

Also available in: Atom PDF