Moves the kopia.Reasoner interface out of the
kopia package and into pkg/backup/identity.
No logical changes here, just renaming and movement.
---
#### Does this PR need a docs update or release note?
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#### Type of change
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#### Issue(s)
* #3993
#### Test Plan
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<!-- PR description-->
This PR adds support for selecting assist backup models. The intent here is to use the assist backups during merge details process.
Changelist:
1. Assist bases now have a requirement to have a) an associated assist backup model b) details ssid. Please see [this code comment](https://github.com/alcionai/corso/pull/3907/files#diff-f9b6b7ab52c8e1148147909fd071d9b80b816d072203d8e9d2fa34ab93185db1R286) for more.
2. Any incomplete assist bases or assist bases not matching 1) are now discarded, i.e. they are not fed to kopia for kopia assisted incrementals. The impact here is that files cached by kopia might be now redownloaded if the backup failed without qualifying for an assist backup.
Unit tests added.
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Pull into separate PR so we can start merging things separately.
`BackupBases` sourced from branch `backup_bases_changes`
`model.go` sourced from branch `partial_bup`
mock backup bases sourced from branch `backup-details-merge`
---
#### Does this PR need a docs update or release note?
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- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
#### Test Plan
- [ ] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E
Intermediate step to a few different goals including
* moving interface definitions to better locations while avoid cycles
* adding a flag to disable kopia-assisted incrementals
Create an interface and implementation for the existing Reason
struct. The goal is to set stuff up so that eventually the kopia
package can ask the struct for the subtree path to work with
when merging the hierarchy instead of having the backup operation
pass that information in
Code changes are mostly just turning stuff into a struct and
fixing up compile errors. Some functions have been excluded from
the struct (i.e. `Key`) and made into functions in the kopia
package itself
---
#### Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
#### Type of change
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #2360
#### Test Plan
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [x] 💚 E2E
Move most of the stuff that was acting on backup bases to be functions that are defined for backup bases. Other code can be removed at a later point
New functions aren't called yet in other code
---
#### Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
#### Type of change
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #3525
#### Test Plan
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
