injectable

type Config ¶

type Config struct {
	// contains filtered or unexported fields
}

Config can wrap a viper.Viper configuration in the context

func NewConfig(v *viper.Viper) *Config

func (c *Config) Context(ctx context.Context) context.Context

func (c Config) FromContext(ctx context.Context) interface{}

type ContextInjectable ¶

type ContextInjectable interface {
	// Context builds a context with the injected value
	Context(context.Context) context.Context

	// FromContext retrieves the injected value from the context.
	//
	// It should work even if the receiver is zero value.
	FromContext(context.Context) interface{}
}

ContextInjectable knows how to retrieve a value from a Context.

Users of the github.com/fredbi/go-cli/cli package can define their own injections via the context.

NOTE: every such type should declare their own key type to avoid conflicts inside the context.

For example:

type commandCtxKey uint8
const ctxConfig commandCtxKey = iota + 1

type ZapLogger ¶

type ZapLogger struct {
}

TODO: puts logger in context ZapLogger can wrap a zap logger in the context