76 lines
1.7 KiB
Go
76 lines
1.7 KiB
Go
package commonsteps
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import (
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"context"
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"fmt"
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"net/http"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
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"github.com/hashicorp/packer/packer-plugin-sdk/net"
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)
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// This step creates and runs the HTTP server that is serving files from the
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// directory specified by the 'http_directory` configuration parameter in the
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// template.
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//
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// Uses:
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// ui packer.Ui
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//
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// Produces:
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// http_port int - The port the HTTP server started on.
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type StepHTTPServer struct {
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HTTPDir string
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HTTPPortMin int
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HTTPPortMax int
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HTTPAddress string
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l *net.Listener
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}
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func (s *StepHTTPServer) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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ui := state.Get("ui").(packer.Ui)
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if s.HTTPDir == "" {
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state.Put("http_port", 0)
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return multistep.ActionContinue
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}
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// Find an available TCP port for our HTTP server
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var httpAddr string
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var err error
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s.l, err = net.ListenRangeConfig{
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Min: s.HTTPPortMin,
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Max: s.HTTPPortMax,
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Addr: s.HTTPAddress,
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Network: "tcp",
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}.Listen(ctx)
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if err != nil {
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err := fmt.Errorf("Error finding port: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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ui.Say(fmt.Sprintf("Starting HTTP server on port %d", s.l.Port))
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// Start the HTTP server and run it in the background
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fileServer := http.FileServer(http.Dir(s.HTTPDir))
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server := &http.Server{Addr: httpAddr, Handler: fileServer}
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go server.Serve(s.l)
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// Save the address into the state so it can be accessed in the future
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state.Put("http_port", s.l.Port)
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return multistep.ActionContinue
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}
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func (s *StepHTTPServer) Cleanup(multistep.StateBag) {
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if s.l != nil {
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// Close the listener so that the HTTP server stops
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s.l.Close()
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}
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}
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