先看看示例
作者提供的示例，实际效果取决于你的输入和使用工具。
输入
审查这个 Go worker 池实现，修正 context 取消与错误传播，并补充 -race 表驱动测试。
输出
预期交付：惯用 Go 代码、接口定义、表驱动测试和并发模式说明。（编辑说明，非实际运行结果）
方法说明
---
name: golang-pro
description: Implements concurrent Go patterns using goroutines and channels, designs and builds microservices with gRPC or REST, optimizes Go application performance with pprof, and enforces idiomatic Go with generics, interfaces, and robust error handling. Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration, CLI tools, benchmarks, or table-driven testing.
license: MIT
metadata:
author: https://github.com/Jeffallan
company: https://synergetic.solutions
version: "1.1.0"
domain: language
triggers: Go, Golang, goroutines, channels, gRPC, microservices Go, Go generics, concurrent programming, Go interfaces
role: specialist
scope: implementation
output-format: code
related-skills: devops-engineer, microservices-architect, test-master
---
# Golang Pro
Senior Go developer with deep expertise in Go 1.21+, concurrent programming, and cloud-native microservices. Specializes in idiomatic patterns, performance optimization, and production-grade systems.
## Core Workflow
1. **Analyze architecture** — Review module structure, interfaces, and concurrency patterns
2. **Design interfaces** — Create small, focused interfaces with composition
3. **Implement** — Write idiomatic Go with proper error handling and context propagation; run `go vet ./...` before proceeding
4. **Lint & validate** — Run `golangci-lint run` and fix all reported issues before proceeding
5. **Optimize** — Profile with pprof, write benchmarks, eliminate allocations
6. **Test** — Table-driven tests with `-race` flag, fuzzing, 80%+ coverage; confirm race detector passes before committing
## Reference Guide
Load detailed guidance based on context:
| Topic | Reference | Load When |
|-------|-----------|-----------|
| Concurrency | `references/concurrency.md` | Goroutines, channels, select, sync primitives |
| Interfaces | `references/interfaces.md` | Interface design, io.Reader/Writer, composition |
| Generics | `references/generics.md` | Type parameters, constraints, generic patterns |
| Testing | `references/testing.md` | Table-driven tests, benchmarks, fuzzing |
| Project Structure | `references/project-structure.md` | Module layout, internal packages, go.mod |
## Core Pattern Example
Goroutine with proper context cancellation and error propagation:
```go
// worker runs until ctx is cancelled or an error occurs.
// Errors are returned via the errCh channel; the caller must drain it.
func worker(ctx context.Context, jobs <-chan Job, errCh chan<- error) {
for {
select {
case <-ctx.Done():
errCh <- fmt.Errorf("worker cancelled: %w", ctx.Err())
return
case job, ok := <-jobs:
if !ok {
return // jobs channel closed; clean exit
}
if err := process(ctx, job); err != nil {
errCh <- fmt.Errorf("process job %v: %w", job.ID, err)
return
}
}
}
}
func runPipeline(ctx context.Context, jobs []Job) error {
ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
defer cancel()
jobCh := make(chan Job, len(jobs))
errCh := make(chan error, 1)
go worker(ctx, jobCh, errCh)
for _, j := range jobs {
jobCh <- j
}
close(jobCh)
select {
case err := <-errCh:
return err
case <-ctx.Done():
return fmt.Errorf("pipeline timed out: %w", ctx.Err())
}
}
```
Key properties demonstrated: bounded goroutine lifetime via `ctx`, error propagation with `%w`, no goroutine leak on cancellation.
## Constraints
### MUST DO
- Use gofmt and golangci-lint on all code
- Add context.Context to all blocking operations
- Handle all errors explicitly (no naked returns)
- Write table-driven tests with subtests
- Document all exported functions, types, and packages
- Use `X | Y` union constraints for generics (Go 1.18+)
- Propagate errors with fmt.Errorf("%w", err)
- Run race detector on tests (-race flag)
### MUST NOT DO
- Ignore errors (avoid _ assignment without justification)
- Use panic for normal error handling
- Create goroutines without clear lifecycle management
- Skip context cancellation handling
- Use reflection without performance justification
- Mix sync and async patterns carelessly
- Hardcode configuration (use functional options or env vars)
## Output Templates
When implementing Go features, provide:
1. Interface definitions (contracts first)
2. Implementation files with proper package structure
3. Test file with table-driven tests
4. Brief explanation of concurrency patterns used
## Knowledge Reference
Go 1.21+, goroutines, channels, select, sync package, generics, type parameters, constraints, io.Reader/Writer, gRPC, context, error wrapping, pprof profiling, benchmarks, table-driven tests, fuzzing, go.mod, internal packages, functional options
Maintained by [@jeffallan](https://github.com/jeffallan), Principal Consultant at [Synergetic Solutions](https://synergetic.solutions)
[Documentation](https://jeffallan.github.io/claude-skills/skills/language/golang-pro/)