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// +build !confonly
package core
import (
"context"
)
// V2rayKey is the key type of Instance in Context, exported for test.
type V2rayKey int
const v2rayKey V2rayKey = 1
// FromContext returns an Instance from the given context, or nil if the context doesn't contain one.
func FromContext(ctx context.Context) *Instance {
if s, ok := ctx.Value(v2rayKey).(*Instance); ok {
return s
}
return nil
}
// MustFromContext returns an Instance from the given context, or panics if not present.
func MustFromContext(ctx context.Context) *Instance {
v := FromContext(ctx)
if v == nil {
panic("V is not in context.")
}
return v
}
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