harness-drone/cache/context.go

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package cache
import (
"golang.org/x/net/context"
)
const key = "cache"
// Setter defines a context that enables setting values.
type Setter interface {
Set(string, interface{})
}
// FromContext returns the Cache associated with this context.
func FromContext(c context.Context) Cache {
return c.Value(key).(Cache)
}
// ToContext adds the Cache to this context if it supports
// the Setter interface.
func ToContext(c Setter, cache Cache) {
c.Set(key, cache)
}