implement diagnostics command

cmd/ipfs/diag.go

+package main
+
+import (
+	"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/gonuts/flag"
+
+	"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
+	"github.com/jbenet/go-ipfs/core/commands"
+)
+
+var cmdIpfsDiag = &commander.Command{
+	UsageLine: "diag",
+	Short:     "Generate a diagnostics report",
+	Long: `ipfs diag - Generate a diagnostics report.
+
+	Sends out a message to each node in the network recursively
+	requesting a listing of data about them including number of
+	connected peers and latencies between them.
+`,
+	Run:  diagCmd,
+	Flag: *flag.NewFlagSet("ipfs-diag", flag.ExitOnError),
+}
+
+var diagCmd = makeCommand(command{
+	name:  "diag",
+	args:  0,
+	flags: nil,
+	cmdFn: commands.Diag,
+})

core/commands/diag.go

+package commands
+
+import (
+	"encoding/json"
+	"io"
+	"time"
+
+	"github.com/jbenet/go-ipfs/core"
+)
+
+func Diag(n *core.IpfsNode, args []string, opts map[string]interface{}, out io.Writer) error {
+	info, err := n.Diagnostics.GetDiagnostic(time.Second * 20)
+	if err != nil {
+		return err
+	}
+	enc := json.NewEncoder(out)
+	err = enc.Encode(info)
+	if err != nil {
+		return err
+	}
+	return nil
+}

daemon/daemon.go

@@ -8,7 +8,6 @@ import (
 	"os"
 	"path"
 	"sync"
-	"time"
 
 	core "github.com/jbenet/go-ipfs/core"
 	"github.com/jbenet/go-ipfs/core/commands"
@@ -138,14 +137,7 @@ func (dl *DaemonListener) handleConnection(conn net.Conn) {
 	case "resolve":
 		err = commands.Resolve(dl.node, command.Args, command.Opts, conn)
 	case "diag":
-		log.Debug("DIAGNOSTIC!")
-		info, err := dl.node.Diagnostics.GetDiagnostic(time.Second * 20)
-		if err != nil {
-			fmt.Fprintln(conn, err)
-			return
-		}
-		enc := json.NewEncoder(conn)
-		err = enc.Encode(info)
+		err = commands.Diag(dl.node, command.Args, command.Opts, conn)
 	default:
 		err = fmt.Errorf("Invalid Command: '%s'", command.Command)
 	}

diagnostics/message.pb.go

@@ -13,7 +13,7 @@ It has these top-level messages:
 */
 package diagnostic
 
-import proto "code.google.com/p/goprotobuf/proto"
+import proto "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/goprotobuf/proto"
 import math "math"
 
 // Reference imports to suppress errors if they are not otherwise used.