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beam/examples/beamsh: 'exec' can communicate with its child via beam.

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Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
This commit is contained in:
Solomon Hykes 2014-04-02 21:58:47 -07:00
parent 9598cba7c0
commit 1794406033
4 changed files with 154 additions and 14 deletions
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18
beam/router.go
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@ -27,7 +27,7 @@ func (r *Router) Send(payload []byte, attachment *os.File) (err error) {
}
}
if r.sink != nil {
//fmt.Printf("[Router.Send] no match. sending to sink\n")
// fmt.Printf("[%d] [Router.Send] no match. sending %s to sink %#v\n", os.Getpid(), MsgDesc(payload, attachment), r.sink)
return r.sink.Send(payload, attachment)
}
//fmt.Printf("[Router.Send] no match. return error.\n")
@ -101,9 +101,17 @@ func (route *Route) Tee(dst Sender) *Route {
return route
}
func (r *Route) Filter(f func([]byte, *os.File) bool) *Route {
r.rules = append(r.rules, f)
return r
}
func (r *Route) KeyStartsWith(k string, beginning ...string) *Route {
r.rules = append(r.rules, func(payload []byte, attachment *os.File) bool {
values := data.Message(payload).Get(k)
if values == nil {
return false
}
if len(values) < len(beginning) {
return false
}
@ -117,6 +125,7 @@ func (r *Route) KeyStartsWith(k string, beginning ...string) *Route {
return r
}
func (r *Route) KeyEquals(k string, full...string) *Route {
r.rules = append(r.rules, func(payload []byte, attachment *os.File) bool {
values := data.Message(payload).Get(k)
@ -152,6 +161,13 @@ func (r *Route) NoKey(k string) *Route {
return r
}
func (r *Route) KeyExists(k string) *Route {
r.rules = append(r.rules, func(payload []byte, attachment *os.File) bool {
return data.Message(payload).Get(k) != nil
})
return r
}
func (r *Route) Passthrough(dst Sender) *Route {
r.handler = func(payload []byte, attachment *os.File) error {
return dst.Send(payload, attachment)