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register_driver.go
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/
register_driver.go
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package plugin
import (
"fmt"
"net"
"net/http"
"net/rpc"
"os"
"github.com/docker/machine/libmachine"
"github.com/docker/machine/libmachine/drivers"
"github.com/docker/machine/libmachine/drivers/plugin/localbinary"
"github.com/docker/machine/libmachine/drivers/rpc"
)
func RegisterDriver(d drivers.Driver) {
if os.Getenv(localbinary.PluginEnvKey) != localbinary.PluginEnvVal {
fmt.Fprintln(os.Stderr, `This is a Docker Machine plugin binary.
Plugin binaries are not intended to be invoked directly.
Please use this plugin through the main 'docker-machine' binary.`)
os.Exit(1)
}
libmachine.SetDebug(true)
rpcd := new(rpcdriver.RpcServerDriver)
rpcd.ActualDriver = d
rpcd.CloseCh = make(chan bool)
rpc.Register(rpcd)
rpc.HandleHTTP()
listener, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
fmt.Fprintf(os.Stderr, "Error loading RPC server: %s\n", err)
os.Exit(1)
}
defer listener.Close()
fmt.Println(listener.Addr())
go http.Serve(listener, nil)
<-rpcd.CloseCh
}