## Description
Generate a `map[old ShortRef]new path.Path` for every item sourced from a base snapshot during backup. Return this information at the end of BackupCollections so that callers can use it to merge backup details if desired.
This PR does a few auxiliary things as well:
* thread current and previous path through hierarchy merging
* add extra field to info tracked by corsoProgress to hold previous path
* provide current and previous paths to streamBaseItems function
## 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
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor
## Issue(s)
* #1800
## Test Plan
<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [ ] 💚 E2E
## Description
Adds a new func to the data.Collection iface:
DoNotMergeItems() tells kopia to skip the
retention of items from prior snapshots when
generating the new snapshot for this collection.
A primary use case for this flag is when a delta
token expires, preventing an incremental lookup
and forcing gc to re-discover all items in the
container.
## Does this PR need a docs update or release note?
- [x] ⛔ No
## Type of change
- [x] 🌻 Feature
## Issue(s)
* #1914
## Test Plan
- [x] ⚡ Unit test
## Description
Instead of relying on KopiaWrapper to create the OwnersCats for a
backup, have BackupOp create them from the selector and pass them in.
This is necessary as incremental backups will no longer see all the data
in the backup, meaning it cannot accurately create the OwnersCats
because some data categories or owners in the backup may not have had
changes.
OwnersCats are eventually converted to tags on a kopia snapshot and used
to lookup snapshots when trying to find base snapshots for incrementals.
Additional minor changes:
* use pointers instead of values when passing parameters
* set backup details OwnersCats to nil
## Type of change
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor
## Issue(s)
* closes#1781
## Test Plan
- [x] 💪 Manual
- [x] ⚡ Unit test
- [x] 💚 E2E
## Description
In a backup operation, begins the operation by
retrieving all backup manifests and metadata
from prior operations.
## Type of change
- [x] 🌻 Feature
## Issue(s)
* #1725
## Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
## Description
This PR uses a separate snapshot to store backup details instead of a Corso model (i.e. a kopia manifest).
Introduces a `StreamStore` that can be leveraged to store larger metadata objects. We can also leverage this
for incrementals or restartable backups going forward.
## Type of change
<!--- Please check the type of change your PR introduces: --->
- [x] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor
## Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* #1735
## Test Plan
<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [x] ⚡ Unit test
- [x] 💚 E2E
