Implement serial console (mclu console ..)

[mclu.git] / mclu_console.ml

diff --git a/mclu_console.ml b/mclu_console.ml
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+(* mclu: Mini Cloud
+ * Copyright (C) 2014-2015 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+(* Implement 'mclu console'. *)
+
+open Printf
+
+open Utils
+
+let get_arg_speclist () = []
+
+let console ~verbose ?host name =
+  let nodes = Mclu_conf.nodes () in
+  let node =
+    match host with
+    | Some host ->
+      (try List.find (fun n -> host = n.Mclu_conf.hostname) nodes
+       with Not_found ->
+         eprintf "mclu: host '%s' not found\n" host;
+         exit 1)
+    | None ->
+      (* No 'host:' prefix given, so we need to find the host. *)
+      let guests = Mclu_list.active_guests ~verbose ~nodes () in
+      let node, _ =
+        try
+          List.find (
+            fun (node, doms) ->
+              List.exists (
+                fun dom ->
+                  name = dom.Mclu_list.dom_name
+              ) doms
+          ) guests
+        with
+          Not_found ->
+            eprintf "mclu: guest '%s' not found\n" name;
+            exit 1 in
+      node in
+
+  let uri = node.Mclu_conf.libvirt_uri in
+
+  let cmd = sprintf "virsh -c %s console %s" (quote uri) (quote name) in
+  if verbose then printf "%s\n%!" cmd;
+  if Sys.command cmd <> 0 then (
+    eprintf "mclu: %s: command failed\n" cmd;
+    exit 1
+  )
+
+let run ~verbose = function
+  | [ name ] ->
+    let host, name = name_parse name in
+    console ~verbose ?host name
+  | _ ->
+    eprintf "Usage: mclu boot <template> <[host:]name>\n";
+    exit 1