Package context is a proof of concept implementation of scoped context, proposed in this blog post.
This library should not be used for production code.
The context package should be imported from github.com/posener/context.
import (
- "context"
+ "github.com/posener/context"
)Since this implementation does not involve changes to the runtime, the goroutine context must be initialized.
func main() {
+ context.Init()
// Go code goes here.
}Functions should not anymore receive the context in the first argument. They should get it from the goroutine scope.
-func foo(ctx context.Context) {
+func foo() {
+ ctx := context.Get()
// Use context.
}Applying context to a scope:
unset := context.Set(ctx)
// ctx is applied until unset is called, or a deeper `Set` call.
unset()Or:
defer context.Set(ctx)()
// ctx is applied until the end of the function or a deeper `Set` call.Invoking goroutines should be done with context.Go or context.GoCtx
Running a new goroutine with the current stored context:
-go foo()
+context.Go(foo)More complected functions:
-go foo(1, "hello")
+context.Go(func() { foo(1, "hello") })Running a goroutine with a new context:
// `ctx` is the context that we want to have in the invoked goroutine
context.GoCtx(ctx, foo)context.TODO should not be used anymore:
-f(context.TODO())
+f(context.Get())Created by goreadme