mirror of https://github.com/docker/docs.git
69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
package backends
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import (
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"fmt"
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"github.com/docker/libswarm/beam"
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"strings"
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"time"
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)
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// New returns a new engine, with all backends
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// registered but not activated.
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// To activate a backend, call a job on the resulting
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// engine, named after the desired backend.
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//
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// Example: `New().Job("debug").Run()`
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func New() *beam.Object {
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backends := beam.NewTree()
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backends.Bind("simulator", Simulator())
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backends.Bind("debug", Debug())
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backends.Bind("fakeclient", FakeClient())
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backends.Bind("forward", Forward())
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return beam.Obj(backends)
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}
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func Debug() beam.Sender {
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backend := beam.NewServer()
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backend.OnSpawn(beam.Handler(func(ctx *beam.Message) error {
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instance := beam.Task(func(in beam.Receiver, out beam.Sender) {
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fmt.Printf("debug backend!")
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for {
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msg, err := in.Receive(beam.Ret)
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if err != nil {
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fmt.Printf("debug receive: %v", err)
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return
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}
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fmt.Printf("[DEBUG] %s %s\n", msg.Verb, strings.Join(msg.Args, " "))
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if _, err := out.Send(msg); err != nil {
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fmt.Printf("debug send: %v", err)
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return
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}
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}
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})
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_, err := ctx.Ret.Send(&beam.Message{Verb: beam.Ack, Ret: instance})
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return err
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}))
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return backend
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}
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func FakeClient() beam.Sender {
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backend := beam.NewServer()
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backend.OnSpawn(beam.Handler(func(ctx *beam.Message) error {
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// Instantiate a new fakeclient instance
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instance := beam.Task(func(in beam.Receiver, out beam.Sender) {
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fmt.Printf("fake client!\n")
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defer fmt.Printf("end of fake client!\n")
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o := beam.Obj(out)
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o.Log("fake client starting")
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defer o.Log("fake client terminating")
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for {
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time.Sleep(1 * time.Second)
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o.Log("fake client heartbeat!")
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}
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})
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_, err := ctx.Ret.Send(&beam.Message{Verb: beam.Ack, Ret: instance})
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return err
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}))
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return backend
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}
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