Tiny Util for Generating Feedback With OpenAI

[harrysolovay]

Incase contributors would like a handy way to prompt with this repo's contents.

1. add an OPENAI_API_KEY to your .env
2. deno run -A npm:structured-outputs --o1 -o FEEDBACK.md -i src --instructions "<your-prompt-here>"

Outputs the generated chat completion into FEEDBACK.md.

Example FEEDBACK.md

Command: deno run -A npm:structured-outputs --o1 -o FEEDBACK.md -i src --instructions "Do you see any race conditions in the following code?"

Based on the code provided, I do not see any race conditions.

**Explanation:**

1. **Shared Resources:**
   - The `MinaMesh` struct contains:
     - `graphql_client: GraphQLClient`
     - `pg_pool: PgPool`
     - `genesis_block_identifier: BlockIdentifier`

   - **`GraphQLClient`:**
     - Holds a `reqwest::Client`, which is designed to be used concurrently across threads.
     - Its `send` method is `async` and does not mutate any shared state.

   - **`PgPool`:**
     - The PostgreSQL connection pool from `sqlx` is thread-safe and designed for concurrent use.

2. **Immutable State:**
   - The `MinaMesh` instance is wrapped in an `Arc` and passed to the HTTP handlers.
   - There is no mutable data inside `MinaMesh` that is modified without synchronization.
   - Rust's ownership model ensures that any mutable access would require a `Mutex` or similar synchronization primitive if shared across threads.

3. **HTTP Handlers:**
   - The handlers use the `Arc<MinaMesh>` and do not mutate any shared state.
   - They perform database queries and make network requests, but these are `async` operations that do not introduce race conditions.

4. **Concurrency Considerations:**
   - Asynchronous code in Rust, when using `async`/`await`, runs within a single thread unless explicitly moved to a thread pool.
   - The use of `tokio::spawn` or similar is not observed in the provided code, so tasks are running on the same executor without shared mutable state.

5. **Database Operations:**
   - The database queries are made using `sqlx`, which manages connections safely.
   - Unless there are issues with the database itself (e.g., conflicting transactions), the code handling these operations is safe from race conditions.

6. **External Libraries:**
   - All external libraries used (`reqwest`, `sqlx`, `axum`, etc.) are popular and well-maintained, with proper consideration for concurrency and thread safety.

7. **Rust Safety Guarantees:**
   - Rust's type system and ownership model prevent data races at compile time.
   - Unless `unsafe` code is used (which isn't evident in the provided code), it's difficult for race conditions to occur.

**Conclusion:**

- There is no evidence of shared mutable state being accessed concurrently without proper synchronization.
- The asynchronous operations are managed safely.
- The shared resources are thread-safe and designed for concurrent use.

Therefore, based on the code you've provided, it appears to be free of race conditions.