woodpecker/server/worker/context.go

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2014-09-29 01:36:24 +00:00
package worker
import (
"code.google.com/p/go.net/context"
)
const reqkey = "worker"
// NewContext returns a Context whose Value method returns the
// application's worker queue.
func NewContext(parent context.Context, worker Worker) context.Context {
return &wrapper{parent, worker}
}
type wrapper struct {
context.Context
worker Worker
}
// Value returns the named key from the context.
func (c *wrapper) Value(key interface{}) interface{} {
if key == reqkey {
return c.worker
}
return c.Context.Value(key)
}
// FromContext returns the worker queue associated with this context.
func FromContext(c context.Context) Worker {
return c.Value(reqkey).(Worker)
}