builder/vmware: Start HTTP server to serve files

builder/vmware/builder.go

@@ -18,6 +18,7 @@ type config struct {
 	ISOUrl    string `mapstructure:"iso_url"`
 	VMName    string `mapstructure:"vm_name"`
 	OutputDir string `mapstructure:"output_directory"`
+	HTTPDir   string `mapstructure:"http_directory"`
 }
 
 func (b *Builder) Prepare(raw interface{}) (err error) {
@@ -46,6 +47,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook) packer.Artifact {
 		&stepPrepareOutputDir{},
 		&stepCreateDisk{},
 		&stepCreateVMX{},
+		&stepHTTPServer{},
 	}
 
 	// Setup the state bag

builder/vmware/step_http_server.go

+package vmware
+
+import (
+	"fmt"
+	"github.com/mitchellh/multistep"
+	"github.com/mitchellh/packer/packer"
+	"net"
+	"net/http"
+)
+
+// This step creates and runs the HTTP server that is serving the files
+// specified by the 'http_files` configuration parameter in the template.
+//
+// Uses:
+//   config *config
+//   ui     packer.Ui
+//
+// Produces:
+//   http_port int - The port the HTTP server started on.
+type stepHTTPServer struct{
+	l net.Listener
+}
+
+func (s *stepHTTPServer) Run(state map[string]interface{}) multistep.StepAction {
+	config := state["config"].(*config)
+	ui := state["ui"].(packer.Ui)
+
+	httpPort := 8080
+	httpAddr := fmt.Sprintf(":%d", httpPort)
+
+	ui.Say(fmt.Sprintf("Starting HTTP server on port %d", httpPort))
+
+	// Start the TCP listener
+	var err error
+	s.l, err = net.Listen("tcp", httpAddr)
+	if err != nil {
+		ui.Error(fmt.Sprintf("Error starting HTTP server: %s", err))
+		return multistep.ActionHalt
+	}
+
+	// Start the HTTP server and run it in the background
+	fileServer := http.FileServer(http.Dir(config.HTTPDir))
+	server := &http.Server{Addr: httpAddr, Handler: fileServer}
+	go server.Serve(s.l)
+
+	// Save the address into the state so it can be accessed in the future
+	state["http_port"] = httpPort
+
+	return multistep.ActionContinue
+}
+
+func (s *stepHTTPServer) Cleanup(map[string]interface{}) {
+	if s.l != nil {
+		// Close the listener so that the HTTP server stops
+		s.l.Close()
+	}
+}