forked from shogo82148/goa-v1
/
adapter.go
60 lines (50 loc) · 1.56 KB
/
adapter.go
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/*
Package goakit contains an adapter that makes it possible to configure goa so it uses the go-kit
log package as logger backend.
Usage:
// Initialize logger using github.com/go-kit/kit/log package
logger := log.NewLogfmtLogger(w)
// Initialize goa service logger using adapter
service.WithLogger(goakit.New(logger))
// ... Proceed with configuring and starting the goa service
// In middlewares:
goakit.Logger(ctx).Log("foo", "bar")
*/
package goakit
import (
"context"
"github.com/go-kit/kit/log"
"github.com/goadesign/goa"
)
// adapter is the go-kit log goa logger adapter.
type adapter struct {
log.Logger
}
// New wraps a go-kit logger into a goa logger.
func New(logger log.Logger) goa.LogAdapter {
return &adapter{logger}
}
// Logger returns the go-kit logger stored in the given context if any, nil otherwise.
func Logger(ctx context.Context) log.Logger {
logger := goa.ContextLogger(ctx)
if a, ok := logger.(*adapter); ok {
return a.Logger
}
return nil
}
// Info logs informational messages using go-kit.
func (a *adapter) Info(msg string, data ...interface{}) {
ctx := []interface{}{"lvl", "info", "msg", msg}
ctx = append(ctx, data...)
a.Logger.Log(ctx...)
}
// Error logs error messages using go-kit.
func (a *adapter) Error(msg string, data ...interface{}) {
ctx := []interface{}{"lvl", "error", "msg", msg}
ctx = append(ctx, data...)
a.Logger.Log(ctx...)
}
// New instantiates a new logger from the given context.
func (a *adapter) New(data ...interface{}) goa.LogAdapter {
return &adapter{Logger: log.With(a.Logger, data...)}
}