koord-scheduler: improve reservation compatibility

[saintube]

Signed-off-by: saintube saintube@foxmail.com

Ⅰ. Describe what this PR does

1. improve the compatibility of the resource reservation by

• move reservation utility functions into pkg/util
• add some helper functions for scheduler plugins easily supporting reservations

Ⅱ. Does this pull request fix one issue?

#96 #188

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Merging #550 (4946301) into main (063ccd7) will decrease coverage by 0.39%.
The diff coverage is 51.66%.

❗ Current head 4946301 differs from pull request most recent head 72a798e. Consider uploading reports for the commit 72a798e to get more accurate results

@@            Coverage Diff             @@
##             main     #550      +/-   ##
==========================================
- Coverage   67.53%   67.14%   -0.40%     
==========================================
  Files         164      164              
  Lines       17566    17760     +194     
==========================================
+ Hits        11864    11925      +61     
- Misses       4831     4950     +119     
- Partials      871      885      +14     

Flag	Coverage Δ
unittests	67.14% <51.66%> (-0.40%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/util/pod.go	60.27% <ø> (+1.29%)	⬆️
pkg/util/reservation.go	37.43% <37.43%> (ø)
pkg/util/utils.go	55.00% <52.94%> (-11.67%)	⬇️
pkg/scheduler/plugins/nodenumaresource/plugin.go	63.71% <66.66%> (+1.26%)	⬆️
pkg/scheduler/eventhandlers/reservation_handler.go	50.00% <69.23%> (ø)
pkg/scheduler/plugins/reservation/hook.go	78.52% <75.00%> (ø)
pkg/scheduler/plugins/reservation/plugin.go	79.57% <76.66%> (+1.38%)	⬆️
pkg/scheduler/plugins/reservation/rcache.go	88.98% <93.75%> (ø)
...cheduler/plugins/reservation/garbage_collection.go	82.14% <100.00%> (ø)
pkg/scheduler/plugins/reservation/utils.go	79.62% <100.00%> (+4.77%)	⬆️
... and 1 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[eahydra]

/lgtm

[eahydra]

/lgtm

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [hormes]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment