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Amp threads synchronization UML sequence diagram

G-J
G-J van Rooyen • @gvrooyen
G-J
The current project follows a "literate coding" approach where: - Only Amp is allowed to make code changes. - Commit messages need to be detailled and include the link to the last Amp thread. - The Amp thread may have been handed off from previous threads, which can be explored. Draw a UML Sequence Diagram in Mermaid to show how Amp threads are synchronized with the application.

The user wants me to create a UML sequence diagram showing how Amp threads are synchronized with the application. I need to understand the codebase first to see how this synchronization works.

Let me explore the codebase to understand the architecture and how Amp threads relate to the application.

Find code related to Amp thread synchronization, thread handling, or any integration with Amp/ampcode. Look for imports, API calls, or data models related to threads.
PRD.md
src/octoco_dash/api/ sync.py
src/octoco_dash/api/ amp_client.py
src/octoco_dash/ app.py
 L1-60

Now I have a clear picture of the sync architecture. Let me create the sequence diagram:

Rendering diagram...

The diagram shows the complete synchronization flow:

  1. User triggers sync via the "Refresh Data" button in Streamlit
  2. Incremental fetch - queries the last updated_at timestamp to only fetch new/modified threads
  3. OAuth token acquisition - uses client credentials flow with auth.ampcode.com
  4. Paginated thread fetching - loops through pages via nextCursor until exhausted
  5. Entity upserts - creates/updates Thread, User, and Repository records
  6. Usage backfill - fetches usage data for any threads missing usage_usd
  7. Returns summary - reports counts back to the UI