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v3: Improve and simplify logic of ctx.Next() #3063

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merged 3 commits into from
Jul 5, 2024
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@gaby gaby commented Jul 5, 2024

Description

  • Removed unnecessary variable declaration: The var err error declaration is not needed; you can return the error directly where it occurs.
  • Simplified control flow: The nested if-else logic has been streamlined to improve readability and reduce branching.

Benchmarks (25 runs)

Summary of ns/op differences:

Run 1 (Before):

  • Min: 37.92 ns/op
  • Max: 40.04 ns/op
  • Mean: 38.75 ns/op

Run 2 (After):

  • Min: 37.64 ns/op
  • Max: 39.19 ns/op
  • Mean: 38.68 ns/op

Conclusion:

Percent Differences:

  • Min Percent Difference: 0.74%
  • Max Percent Difference: 2.12%
  • Mean Percent Difference: 0.18%

Summary of Iteration Differences:

Run 1 (before):

  • Min Iterations: 29071340
  • Max Iterations: 31355298
  • Mean Iterations: 30071851

Run 2 (after):

  • Min Iterations: 28509068
  • Max Iterations: 31645021
  • Mean Iterations: 30259517

Percent Differences:

  • Min Percent Difference: 1.93%
  • Max Percent Difference: 0.93%
  • Mean Percent Difference: 0.62%

Comments

  • Run 2 is slightly faster than Run 1 based on the min and mean values.
  • Min value: Run 2 (37.64 ns/op) is faster than Run 1 (37.92 ns/op).
  • Max value: Run 2 (39.19 ns/op) is faster than Run 1 (40.04 ns/op).
  • Mean value: Run 2 (38.68 ns/op) is faster than Run 1 (38.75 ns/op).

Changes introduced

  • Benchmarks: Describe any performance benchmarks and improvements related to the changes.

Type of change

Please delete options that are not relevant.

  • Performance improvement (non-breaking change which improves efficiency)

@gaby gaby requested a review from a team as a code owner July 5, 2024 13:58
@gaby gaby requested review from sixcolors, ReneWerner87 and efectn and removed request for a team July 5, 2024 13:58
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coderabbitai bot commented Jul 5, 2024

Walkthrough

The recent updates improve the efficiency of the Next method within the DefaultCtx struct, enhancing the control flow for handling routes and handler stacks. Additionally, a new benchmark test, Benchmark_Router_Next_Default, has been introduced in router_test.go to measure the performance of handling simple GET requests, providing better insights into the router's default behavior.

Changes

Files Change Summary
ctx.go Modified the Next method in DefaultCtx for more efficient control flow in handling routes.
router_test.go Added Benchmark_Router_Next_Default, a new benchmark test for assessing default router behavior.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Router
    participant DefaultCtx

    User->>Router: Send GET request
    Router->>DefaultCtx: Initialize context and call Next
    DefaultCtx->>DefaultCtx: Process route and handler
    DefaultCtx-->>Router: Return control to router
    Router-->>User: Send response
Loading

Poem

In code so tight, the handlers flow,
Next guides the routes where they must go.
A router benchmark, swift and neat,
Measures performance, makes code fleet.
With every change, our code does grow,
Efficiency shines, our efforts show. 🌟


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codecov bot commented Jul 5, 2024

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 83.12%. Comparing base (dfdf964) to head (014ede8).

Files Patch % Lines
ctx.go 40.00% 2 Missing and 1 partial ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##             main    #3063      +/-   ##
==========================================
- Coverage   83.13%   83.12%   -0.01%     
==========================================
  Files         115      115              
  Lines        8323     8321       -2     
==========================================
- Hits         6919     6917       -2     
- Misses       1074     1075       +1     
+ Partials      330      329       -1     
Flag Coverage Δ
unittests 83.12% <40.00%> (-0.01%) ⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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Actionable comments posted: 1

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between dfdf964 and e903d5f.

Files selected for processing (2)
  • ctx.go (1 hunks)
  • router_test.go (1 hunks)
Additional context used
GitHub Check: codecov/patch
ctx.go

[warning] 1035-1036: ctx.go#L1035-L1036
Added lines #L1035 - L1036 were not covered by tests

Additional comments not posted (4)
router_test.go (1)

546-564: LGTM!

The benchmark function Benchmark_Router_Next_Default is well-structured and follows the typical benchmarking pattern in Go.

However, ensure that the benchmark function is correctly registered and used in the codebase.

Verification successful

The benchmark function is correctly registered and used.

The function Benchmark_Router_Next_Default is correctly defined and referenced in a comment for running the benchmark.

  • router_test.go: The function is defined and referenced in a comment showing how to run the benchmark.
Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the usage of the benchmark function `Benchmark_Router_Next_Default` in the codebase.

# Test: Search for the function usage. Expect: Only occurrences of the new benchmark function.
rg --type go $'Benchmark_Router_Next_Default'

Length of output: 209

ctx.go (3)

1026-1026: LGTM! Incrementing handler index is correct.

The increment of the handler index is logically sound.


1030-1031: LGTM! Continuing route stack is correct.

The function correctly continues executing the next handler in the route stack.


1039-1040: LGTM! Continuing handler stack is correct.

The function correctly continues executing the next handler in the handler stack.

Comment on lines +1033 to +1037
// Continue handler stack
if c.app.newCtxFunc != nil {
_, err := c.app.nextCustom(c)
return err
}
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Simplified control flow is correct but lacks test coverage.

The simplification of the control flow is correct and improves readability. However, lines 1035-1036 are not covered by tests.

+ // Ensure lines 1035-1036 are covered by tests.

Do you want me to generate the unit testing code or open a GitHub issue to track this task?

Committable suggestion was skipped due to low confidence.

Tools
GitHub Check: codecov/patch

[warning] 1035-1036: ctx.go#L1035-L1036
Added lines #L1035 - L1036 were not covered by tests

@ReneWerner87 ReneWerner87 added this to the v3 milestone Jul 5, 2024
@ReneWerner87 ReneWerner87 merged commit c579a1a into main Jul 5, 2024
14 of 16 checks passed
@gaby gaby deleted the next-handler branch July 5, 2024 14:37
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