micro/client/context.go
Vasiliy Tolstov f6c0728a59 fix context usage across codebase
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2020-12-17 22:52:00 +03:00

35 lines
740 B
Go

package client
import (
"context"
)
type clientKey struct{}
// FromContext get client from context
func FromContext(ctx context.Context) (Client, bool) {
if ctx == nil {
return nil, false
}
c, ok := ctx.Value(clientKey{}).(Client)
return c, ok
}
// NewContext put client in context
func NewContext(ctx context.Context, c Client) context.Context {
if ctx == nil {
ctx = context.Background()
}
return context.WithValue(ctx, clientKey{}, c)
}
// SetPublishOption returns a function to setup a context with given value
func SetPublishOption(k, v interface{}) PublishOption {
return func(o *PublishOptions) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, k, v)
}
}