/
context.go
54 lines (47 loc) · 1.24 KB
/
context.go
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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)
}
}
// SetCallOption returns a function to setup a context with given value
func SetCallOption(k, v interface{}) CallOption {
return func(o *CallOptions) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, k, v)
}
}
// SetOption returns a function to setup a context with given value
func SetOption(k, v interface{}) Option {
return func(o *Options) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, k, v)
}
}