feat: add parallel fetching for services

[k1LoW]

This pull request introduces significant performance improvements to the tailor/resource.go resource fetching logic by adding parallelism at multiple levels. The main changes refactor the code to use goroutines and errgroup for concurrent fetching of pipeline, TailorDB, and StateFlow resources, as well as their nested details. Mutexes are introduced to ensure thread-safe writes to shared data structures.

Key improvements and changes:

Parallelization and Concurrency:

• Refactored the top-level Resources method to use errgroup for concurrent fetching of Pipeline, TailorDB, and StateFlow services, reducing overall resource fetch time. (tailor/resource.go)
• Introduced parallel fetching for nested resources (e.g., pipeline resolvers, TailorDB types) using goroutines and errgroup, with mutexes to ensure thread safety when appending to shared slices. (tailor/resource.go) [1] [2] [3] [4]

Code Structure and Maintainability:

• Extracted resource-fetching logic into dedicated helper methods (fetchPipelineServices, fetchPipelineResolvers, fetchPipelineResolverDetails, fetchTailorDBServices, fetchTailorDBTypes, fetchTailorDBTypeDetails, fetchStateFlowServices, fetchExecutionResults) for better readability and testability. (tailor/resource.go) [1] [2] [3] [4] [5]

Thread Safety:

• Added a sync.Mutex field to the Resources struct and used local mutexes in helper functions to prevent race conditions when updating shared slices. (tailor/resource.go) [1] [2] [3] [4]

Dependency Updates:

• Added golang.org/x/sync to go.mod to provide errgroup for managing goroutine lifecycles and error propagation. (go.mod)

These changes collectively make resource loading much faster and more robust, especially for projects with a large number of pipelines or database types.

[github-actions]

Code Metrics Report

	main (01c749f)	#32 (adffa60)	+/-
Coverage	30.7%	26.6%	-4.1%
Code to Test Ratio	1:1.4	1:1.3	-0.2
Test Execution Time	6s	7s	+1s

Details

  |                     | main (01c749f) | #32 (adffa60) |  +/-  |
  |---------------------|----------------|---------------|-------|
- | Coverage            |          30.7% |         26.6% | -4.1% |
  |   Files             |             12 |            12 |     0 |
  |   Lines             |            482 |           556 |   +74 |
  |   Covered           |            148 |           148 |     0 |
- | Code to Test Ratio  |          1:1.4 |         1:1.3 |  -0.2 |
  |   Code              |           1354 |          1462 |  +108 |
  |   Test              |           1924 |          1924 |     0 |
- | Test Execution Time |             6s |            7s |   +1s |

Code coverage of files in pull request scope (0.0% → 0.0%)

Files	Coverage	+/-	Status
tailor/resource.go	0.0%	0.0%	modified

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Reported by octocov

[Mistat]

LGTM

[k1LoW]

Thank you!