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Collapse nested conditionals#253

Merged
leynos merged 1 commit intocodex/replace-.unwrap-with-.expectfrom
codex/fix-collapsible-if-statements
Aug 3, 2025
Merged

Collapse nested conditionals#253
leynos merged 1 commit intocodex/replace-.unwrap-with-.expectfrom
codex/fix-collapsible-if-statements

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@leynos
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@leynos leynos commented Aug 3, 2025

Summary

  • reduce nested rate validation to a single if in push queues
  • simplify preamble callback error handling

Testing

  • make fmt
  • make lint
  • make test

https://chatgpt.com/codex/tasks/task_e_688f6fa4c4e083229cd17b9c36880b3e

Summary by Sourcery

Refactor conditional logic and simplify error handling to improve readability and maintainability

Enhancements:

  • Collapse nested rate validation in PushQueues to a single conditional using Option::filter
  • Simplify preamble callback error handling by matching on the result and logging errors without halting connection processing
  • Expand single-line function definitions (from_arc, downgrade, worker_count) into multiline blocks for consistent formatting

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sourcery-ai Bot commented Aug 3, 2025

Reviewer's Guide

This PR reduces nested conditionals in push queue rate validation by using Option.filter, restructures preamble callback error handling to a match construct that logs failures without halting processing, and updates formatting of trivial methods to multi-line bodies for consistency.

Sequence diagram for simplified preamble callback error handling

sequenceDiagram
    participant Server
    participant Stream
    participant Handler
    Server->>Stream: read_preamble()
    alt read_preamble Ok
        Server->>Handler: handler(&preamble, &mut stream).await
        alt Handler returns Ok
            Note right of Server: Continue processing
        else Handler returns Err(e)
            Server->>Server: Log error (tracing::error)
            Note right of Server: Continue processing
        end
        Server->>Stream: RewindStream::new(leftover, stream)
    else read_preamble Err
        Note right of Server: Handle error (not shown)
    end
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Class diagram for PushQueues rate validation logic update

classDiagram
    class PushQueues {
        +new(high_capacity, low_capacity, rate, dlq) Result<(Self, PushHandle<F>), PushConfigError>
    }
    class PushConfigError {
        +InvalidRate(usize)
    }
    PushQueues "1" -- "1" PushConfigError : returns error on invalid rate
    class PushHandle {
        +from_arc(arc: Arc<PushHandleInner<F>>) -> Self
        +downgrade(&self) -> Weak<PushHandleInner<F>>
    }
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File-Level Changes

Change Details Files
Refactor rate validation logic to collapse nested conditionals
  • Combine rate existence and bounds check using Option.filter
  • Return Err on invalid rates in a single if let block
  • Add comment explaining early rejection to prevent resource overuse
src/push.rs
Restructure preamble callback error handling
  • Replace nested if let Err with match on handler call
  • Introduce explicit Ok arm as no-op
  • Log errors in Err arm with explanatory comment to continue processing
src/server.rs
Update formatting of trivial methods to multi-line bodies
  • Expand single-line functions into multi-line form for from_arc and downgrade
  • Apply same formatting change to worker_count method
  • Align code style by running make fmt
src/push.rs
src/server.rs

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Hey @leynos - I've reviewed your changes and found some issues that need to be addressed.


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@leynos leynos merged commit a31f475 into codex/replace-.unwrap-with-.expect Aug 3, 2025
2 checks passed
@leynos leynos deleted the codex/fix-collapsible-if-statements branch August 3, 2025 14:58
leynos added a commit that referenced this pull request Aug 3, 2025
* Replace unwraps with expect

* Add expect macros and document infallible call

* Use push_expect macros in connection actor tests

Replace verbose await/expect pairs with the push_expect! helper to
standardise low- and high-priority push failure messages. Rewriting
let-chain expressions to nested conditionals keeps the build on stable
Rust, and lint expectations were relaxed accordingly.

* Apply formatting

* Handle low queue TryRecvError and fix test message (#252)

* Handle missing TryRecvError and fix test message

* Apply formatting

* Collapse nested conditionals (#253)

* Remove unneedeed carriage returns

* Remove unneedeed carriage returns

* Remove unused struct

* Remove unused struct
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