Remove daemon InitDone guard in interrupt handler

Instead of just terminating right there and then, we cancel the
context, and let the daemon exit cleanly. This make take a few
seconds, as the node builder and its child processes do not
care too much about the context state while building nodes,
but this can be improved by injecting checks for ctx.Done()
before time-consuming steps.

cmd/ipfs/daemon.go

@@ -288,9 +288,6 @@ func daemonFunc(req cmds.Request, res cmds.Response) {
  corehttp.VersionOption(),
  }
 
- // our global interrupt handler can now try to stop the daemon
- close(req.Context().InitDone)
-
  if rootRedirect != nil {
  opts = append(opts, rootRedirect)
  }

cmd/ipfs/main.go

@@ -133,14 +133,6 @@ func main() {
  os.Exit(1)
  }
 
- // our global interrupt handler may try to stop the daemon
- // before the daemon is ready to be stopped; this dirty
- // workaround is for the daemon only; other commands are always
- // ready to be stopped
- if invoc.cmd != daemonCmd {
- close(invoc.req.Context().InitDone)
- }
-
  // ok, finally, run the command invocation.
  intrh, ctx := invoc.SetupInterruptHandler(ctx)
  defer intrh.Close()
@@ -518,15 +510,6 @@ func (i *cmdInvocation) SetupInterruptHandler(ctx context.Context) (io.Closer, c
  case 1:
  fmt.Println() // Prevent un-terminated ^C character in terminal
 
- ctx := i.req.Context()
-
- // if we're still initializing, cannot use `ctx.GetNode()`
- select {
- default: // initialization not done
- os.Exit(-1)
- case <-ctx.InitDone:
- }
-
  ih.wg.Add(1)
  go func() {
  defer ih.wg.Done()

commands/request.go

@@ -30,7 +30,6 @@ type Context struct {
 
  node *core.IpfsNode
  ConstructNode func() (*core.IpfsNode, error)
- InitDone chan bool
 }
 
 // GetConfig returns the config of the current Command exection
@@ -288,7 +287,7 @@ func NewRequest(path []string, opts OptMap, args []string, file files.File, cmd
  optDefs = make(map[string]Option)
  }
 
- ctx := Context{Context: context.TODO(), InitDone: make(chan bool)}
+ ctx := Context{Context: context.TODO()}
  values := make(map[string]interface{})
  req := &request{path, opts, args, file, cmd, ctx, optDefs, values, os.Stdin}
  err := req.ConvertOptions()