djmil
13f6a6812a
- public API streamline
- Failf[T]("msg") - originate a failure from a message; embed a cause with %w
- Err[T](err) - sets .err verbatim (the return zero, err / sentinel case)
38 lines
969 B
Go
38 lines
969 B
Go
// Package greeter is a minimal example domain package.
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// It demonstrates how to:
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// - define an interface (satisfied by manual fakes in tests)
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// - inject a component-scoped logger through the constructor
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//
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// Replace this package with your own domain logic.
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package greeter
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import (
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"fmt"
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"gitea.djmil.dev/go/template/pkg/logger"
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"gitea.djmil.dev/go/template/pkg/result"
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)
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// Service is the concrete implementation.
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type Service struct {
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log *logger.Logger
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}
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// New creates a Greeter service with the provided logger.
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func New(log *logger.Logger) *Service {
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return &Service{log: log.WithField("component", "greeter")}
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}
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// Greet returns a personalized greeting and logs the interaction.
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func (s *Service) Greet(name string) result.Expect[string] {
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if name == "" {
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return result.Failf[string]("name must not be empty")
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}
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msg := fmt.Sprintf("Hello, %s!", name)
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s.log.WithField("name", name).Debug("greeting generated")
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return result.Ok(msg)
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}
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