lotus/node/modules/helpers/helpers.go

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package helpers
import (
"context"
"go.uber.org/fx"
)
type MetricsCtx context.Context
// LifecycleCtx creates a context which will be cancelled when lifecycle stops
//
// This is a hack which we need because most of our services use contexts in a
// wrong way
func LifecycleCtx(mctx MetricsCtx, lc fx.Lifecycle) context.Context {
ctx, cancel := context.WithCancel(mctx)
lc.Append(fx.Hook{
OnStop: func(_ context.Context) error {
cancel()
return nil
},
})
return ctx
}