transitioned ipfs2 -> ipfs

core/commands/log.go

@@ -0,0 +1,52 @@
+package commands
+
+import (
+	"fmt"
+
+	cmds "github.com/jbenet/go-ipfs/commands"
+	u "github.com/jbenet/go-ipfs/util"
+)
+
+// Golang os.Args overrides * and replaces the character argument with
+// an array which includes every file in the user's CWD. As a
+// workaround, we use 'all' instead. The util library still uses * so
+// we convert it at this step.
+var logAllKeyword = "all"
+
+var LogCmd = &cmds.Command{
+	Helptext: cmds.HelpText{
+		Tagline: "Change the logging level",
+		ShortDescription: `
+'ipfs log' is a utility command used to change the logging
+output of a running daemon.
+`,
+	},
+
+	Arguments: []cmds.Argument{
+		// TODO use a different keyword for 'all' because all can theoretically
+		// clash with a subsystem name
+		cmds.StringArg("subsystem", true, false, fmt.Sprintf("the subsystem logging identifier. Use '%s' for all subsystems.", logAllKeyword)),
+		cmds.StringArg("level", true, false, "one of: debug, info, notice, warning, error, critical"),
+	},
+	Run: func(req cmds.Request) (interface{}, error) {
+
+		args := req.Arguments()
+		subsystem, level := args[0], args[1]
+
+		if subsystem == logAllKeyword {
+			subsystem = "*"
+		}
+
+		if err := u.SetLogLevel(subsystem, level); err != nil {
+			return nil, err
+		}
+
+		s := fmt.Sprintf("Changed log level of '%s' to '%s'", subsystem, level)
+		log.Info(s)
+		return &MessageOutput{s}, nil
+	},
+	Marshalers: cmds.MarshalerMap{
+		cmds.Text: MessageTextMarshaler,
+	},
+	Type: &MessageOutput{},
+}