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Add support for multiple backends piped together 

Docker-DCO-1.1-Signed-off-by: Ben Firshman <ben@firshman.co.uk> (github: bfirsh)
This commit is contained in:
Ben Firshman 2014-06-05 12:40:26 -07:00
parent a0874d7b1c
commit 3bb782faf1
1 changed files with 30 additions and 23 deletions
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53
swarmd/swarmd.go
View File

@ -43,30 +43,37 @@ func cmdDaemon(c *cli.Context) {
fmt.Println(strings.Join(names, "\n"))
return
}
bName, bArgs, err := parseCmd(c.Args()[0])
if err != nil {
Fatalf("parse: %v", err)
var previousInstanceIn beam.Receiver
for _, backendArg := range c.Args() {
bName, bArgs, err := parseCmd(backendArg)
if err != nil {
Fatalf("parse: %v", err)
}
fmt.Printf("---> Loading backend '%s'\n", strings.Join(append([]string{bName}, bArgs...), " "))
_, backend, err := back.Attach(bName)
if err != nil {
Fatalf("%s: %v\n", bName, err)
}
fmt.Printf("---> Spawning\n")
instance, err := backend.Spawn(bArgs...)
if err != nil {
Fatalf("spawn %s: %v\n", bName, err)
}
fmt.Printf("---> Attaching\n")
instanceIn, instanceOut, err := instance.Attach("")
if err != nil {
Fatalf("attach: %v", err)
}
fmt.Printf("---> Starting\n")
if err := instance.Start(); err != nil {
Fatalf("start: %v", err)
}
if previousInstanceIn != nil {
go beam.Copy(instanceOut, previousInstanceIn)
}
previousInstanceIn = instanceIn
}
fmt.Printf("---> Loading backend '%s'\n", strings.Join(append([]string{bName}, bArgs...), " "))
_, backend, err := back.Attach(bName)
if err != nil {
Fatalf("%s: %v\n", bName, err)
}
fmt.Printf("---> Spawning\n")
instance, err := backend.Spawn(bArgs...)
if err != nil {
Fatalf("spawn %s: %v\n", bName, err)
}
fmt.Printf("---> Attaching\n")
instanceIn, _, err := instance.Attach("")
if err != nil {
Fatalf("attach: %v", err)
}
fmt.Printf("---> Starting\n")
if err := instance.Start(); err != nil {
Fatalf("start: %v", err)
}
_, err = beam.Copy(app, instanceIn)
_, err := beam.Copy(app, previousInstanceIn)
if err != nil {
Fatalf("copy: %v", err)
}