<!-- PR description-->
With #4497 changes, any counters that we log in graph middlewares ( e.g. `APICallTokensConsumed` or `ThrottledAPICalls`) will no longer show up in `BackupOperation.Results.Counts`.
This is because graph adapters and backup operation will be initialized with different count busses. Since the backup result counts are captured from the operation bus, we will lose out on any graph metrics captured in middleware layers. This PR unifies the busses.
Ill also add a regression check for graph metrics shortly
---
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- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
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- [ ] 🧹 Tech Debt/Cleanup
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#### Does this PR need a docs update or release note?
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#### Type of change
- [x] 🧹 Tech Debt/Cleanup
#### Test Plan
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<!-- PR description-->
**Changes:**
1. Count item download requests under drive rate limit quota . Currently this is under exchange limiter.
2. Use 1 rate limit token instead of 2 for drive calls by default.
3. Use 2 tokens instead of 1 for initial delta query ( which has no token).
Sharing internal docs separately to go along with the review.
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#### 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
<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
#### Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* #<issue>
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adds graph error identification for application throttled and adds an ApplicationThrottled sentinel to pkg/errs for sdk consumer identification.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Test Plan
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- [x] 💚 E2E
Adds a middleware to the graph api adapter which
watches all http request responses for both panics and connection reset issues. Panics are
transformed into standard errors. Connection
resets get retried up to three times.
---
#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🌻 Feature
#### Test Plan
- [x] ⚡ Unit test
http/2 stream error failures don't allow
us to leverage client middleware. As a
result we're lacking a retry handler. This
change adds retries for http_wrapper
in the explicit case of a http/2 stream
error.
---
#### Does this PR need a docs update or release note?
- [x] ✅ Yes, it's included
#### Type of change
- [x] 🐛 Bugfix
#### Test Plan
- [x] 💪 Manual
- [x] 💚 E2E
renames /internal/connector to /internal/m365. No logic changes in this PR. Only the dir rename, import renames, and one linter shadowing rename.
---
#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🧹 Tech Debt/Cleanup
#### Issue(s)
* #1996
#### Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
