+++ /dev/null
-(* virt-manager-like graphical management tool.
- (C) Copyright 2007 Richard W.M. Jones, Red Hat Inc.
- http://libvirt.org/
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*)
-
-open Printf
-
-module C = Libvirt.Connect
-module D = Libvirt.Domain
-module N = Libvirt.Network
-
-open Mlvirtmanager_helpers
-
-(* List of currently open connections. Actually it's a list of
- * (id, Libvirt.Connect.t) so that we can easily identify
- * connections by their unique ID.
- *)
-let get_conns, add_conn, del_conn =
- let conns = ref [] in
- let id = ref 0 in
- let get_conns () = !conns in
- let add_conn conn =
- incr id; let id = !id in
- conns := (id, conn) :: !conns;
- id
- in
- let del_conn id =
- conns := List.filter (fun (id', _) -> id <> id') !conns
- in
- get_conns, add_conn, del_conn
-
-(* The current state. This is used so that we can see changes that
- * have happened and add or remove parts of the model. (Previously
- * we used to recreate the whole model each time, but the problem
- * with that is we "forget" things like the selection).
- *)
-type state = connection list
-and connection = int (* connection ID *) * (active list * inactive list)
-and active = int (* domain's ID *)
-and inactive = string (* domain's name *)
-
-(* The last "CPU time" seen for a domain, so we can calculate CPU % usage.
- * Hash of (connid, domid) -> cpu_time [int64].
- *)
-let last_cpu_time = Hashtbl.create 13
-let last_time = ref (Unix.gettimeofday ())
-
-type columns = string GTree.column * string GTree.column * string GTree.column * string GTree.column * string GTree.column * int GTree.column
-
-let debug_repopulate = true
-
-(* Populate the tree with the current list of connections, domains.
- * This function is called once per second.
- *)
-let repopulate (tree : GTree.view) (model : GTree.tree_store)
- (col_name_id, col_domname, col_status, col_cpu, col_mem, col_id)
- state =
- let time_passed =
- let time_now = Unix.gettimeofday () in
- let time_passed = time_now -. !last_time in
- last_time := time_now;
- time_passed in
-
- (* Which connections have been added or removed? *)
- let conns = get_conns () in
- let added, _, removed =
- let old_conn_ids = List.map fst state
- and new_conn_ids = List.map fst conns in
- differences old_conn_ids new_conn_ids in
-
- (* Remove the subtrees for any connections which have gone. *)
- if debug_repopulate then List.iter (eprintf "-connection %d\n%!") removed;
-
- List.iter (
- fun conn_id ->
- filter_top_level_rows model
- (fun row -> conn_id <> model#get ~row ~column:col_id)
- ) removed;
-
- (* Add placeholder subtree for any new connections. *)
- if debug_repopulate then List.iter (eprintf "+connection %d\n%!") added;
-
- List.iter (
- fun conn_id ->
- let row = model#append () in
- (* Get the connection name. *)
- let name =
- try C.get_hostname (List.assoc conn_id conns)
- with Not_found | Libvirt.Virterror _ ->
- "Conn #" ^ string_of_int conn_id in
- model#set ~row ~column:col_name_id name;
- model#set ~row ~column:col_id conn_id;
- (* XXX This doesn't work, why? *)
- tree#expand_row (model#get_path row)
- ) added;
-
- let new_state =
- List.map (
- fun (conn_id, conn) ->
- (* Get the old list of active and inactive domains. If this
- * connection is newly created, start with empty lists.
- *)
- let old_active, old_inactive =
- try List.assoc conn_id state
- with Not_found -> [], [] in
-
- (* Get the top level row in the model corresponding to this
- * connection.
- *)
- let parent =
- try find_top_level_row model
- (fun row -> conn_id = model#get ~row ~column:col_id)
- with Not_found -> assert false (* Should never happen. *) in
-
- try
- (* Node info & number of CPUs available. *)
- let node_info = C.get_node_info conn in
- let nr_cpus = C.maxcpus_of_node_info node_info in
-
- (* For this connection, get a current list of active domains (IDs) *)
- let active =
- let n = C.num_of_domains conn in
- let doms = C.list_domains conn n in
- Array.to_list doms in
-
- (* Which active domains have been added or removed? *)
- let added, _, removed = differences old_active active in
-
- (* Remove any active domains which have disappeared. *)
- if debug_repopulate then
- List.iter (eprintf "-active %d\n%!") removed;
-
- List.iter (
- fun domid ->
- filter_rows model
- (fun row -> domid <> model#get ~row ~column:col_id)
- (model#iter_children (Some parent))
- ) removed;
-
- (* Add any active domains which have appeared. *)
- if debug_repopulate then
- List.iter (eprintf "+active %d\n%!") added;
-
- List.iter (
- fun domid ->
- let domname =
- try
- let dom = D.lookup_by_id conn domid in
- D.get_name dom
- with _ -> "" in (* Ignore any transient error. *)
-
- let row = model#append ~parent () in
- model#set ~row ~column:col_name_id (string_of_int domid);
- model#set ~row ~column:col_domname domname;
- model#set ~row ~column:col_id domid
- ) added;
-
- (* Get a current list of inactive domains (names). *)
- let inactive =
- let n = C.num_of_defined_domains conn in
- let doms = C.list_defined_domains conn n in
- Array.to_list doms in
-
- (* Which inactive domains have been added or removed? *)
- let added, _, removed = differences old_inactive inactive in
-
- (* Remove any inactive domains which have disappeared. *)
- if debug_repopulate then
- List.iter (eprintf "-inactive %s\n%!") removed;
-
- List.iter (
- fun domname ->
- filter_rows model
- (fun row ->
- model#get ~row ~column:col_id <> -1 ||
- model#get ~row ~column:col_domname <> domname)
- (model#iter_children (Some parent))
- ) removed;
-
- (* Add any inactive domains which have appeared. *)
- if debug_repopulate then
- List.iter (eprintf "+inactive %s\n%!") added;
-
- List.iter (
- fun domname ->
- let row = model#append ~parent () in
- model#set ~row ~column:col_name_id "";
- model#set ~row ~column:col_domname domname;
- model#set ~row ~column:col_status "inactive";
- model#set ~row ~column:col_id (-1)
- ) added;
-
- (* Now iterate over all active domains and update their state,
- * CPU and memory.
- *)
- iter_rows model (
- fun row ->
- let domid = model#get ~row ~column:col_id in
- if domid >= 0 then ( (* active *)
- try
- let dom = D.lookup_by_id conn domid in
- let info = D.get_info dom in
- let status = string_of_domain_state info.D.state in
- model#set ~row ~column:col_status status;
- let memory = sprintf "%Ld K" info.D.memory in
- model#set ~row ~column:col_mem memory;
-
- let ns_now = info.D.cpu_time in (* ns = nanoseconds *)
- let ns_prev =
- try
- let ns = Hashtbl.find last_cpu_time (conn_id, domid) in
- if ns > ns_now then 0L else ns (* Rebooted? *)
- with Not_found -> 0L in
- Hashtbl.replace last_cpu_time (conn_id, domid) ns_now;
- let ns_now = Int64.to_float ns_now in
- let ns_prev = Int64.to_float ns_prev in
- let ns_used = ns_now -. ns_prev in
- let ns_available = 1_000_000_000. *. float nr_cpus in
- let cpu_percent =
- 100. *. (ns_used /. ns_available) /. time_passed in
- let cpu_percent = sprintf "%.1f %%" cpu_percent in
- model#set ~row ~column:col_cpu cpu_percent;
-
- with Libvirt.Virterror _ -> () (* Ignore any transient error *)
- )
- ) (model#iter_children (Some parent));
-
- (* Return new state. *)
- conn_id, (active, inactive)
- with
- (* Libvirt errors here are not really fatal. They can happen
- * if the state changes at the moment we read it. If it does
- * happen, just return the old state, and next time we come
- * around to this connection it'll be fixed.
- *)
- | Libvirt.Virterror err ->
- prerr_endline (Libvirt.Virterror.to_string err);
- conn_id, (old_active, old_inactive)
- | Failure msg ->
- prerr_endline msg;
- conn_id, (old_active, old_inactive)
- ) conns in
-
- (* Return the updated state. *)
- new_state
-
-(* Make the treeview which displays the connections and domains. *)
-let make_treeview ?packing () =
- let cols = new GTree.column_list in
- let col_name_id = cols#add Gobject.Data.string in
- let col_domname = cols#add Gobject.Data.string in
- let col_status = cols#add Gobject.Data.string in
- let col_cpu = cols#add Gobject.Data.string in
- let col_mem = cols#add Gobject.Data.string in
- (* Hidden column containing the connection ID or domain ID. For
- * inactive domains, this contains -1 and col_domname is the name. *)
- let col_id = cols#add Gobject.Data.int in
- let model = GTree.tree_store cols in
-
- (* Column sorting functions. *)
- let make_sort_func_on column =
- fun (model : GTree.model) row1 row2 ->
- let col1 = model#get ~row:row1 ~column in
- let col2 = model#get ~row:row2 ~column in
- compare col1 col2
- in
- (*model#set_default_sort_func (make_sort_func_on col_domname);*)
- model#set_sort_func 0 (make_sort_func_on col_name_id);
- model#set_sort_func 1 (make_sort_func_on col_domname);
- model#set_sort_column_id 1 `ASCENDING;
-
- (* Make the GtkTreeView and attach column renderers to it. *)
- let tree = GTree.view ~model ~reorderable:false ?packing () in
-
- let append_visible_column title column sort =
- let renderer = GTree.cell_renderer_text [], ["text", column] in
- let view_col = GTree.view_column ~title ~renderer () in
- ignore (tree#append_column view_col);
- match sort with
- | None -> ()
- | Some (sort_indicator, sort_order, sort_column_id) ->
- view_col#set_sort_indicator sort_indicator;
- view_col#set_sort_order sort_order;
- view_col#set_sort_column_id sort_column_id
- in
- append_visible_column "ID" col_name_id (Some (false, `ASCENDING, 0));
- append_visible_column "Name" col_domname (Some (true, `ASCENDING, 1));
- append_visible_column "Status" col_status None;
- append_visible_column "CPU" col_cpu None;
- append_visible_column "Memory" col_mem None;
-
- let columns =
- col_name_id, col_domname, col_status, col_cpu, col_mem, col_id in
- let state = repopulate tree model columns [] in
-
- (tree, model, columns, state)
-
-(* Callback function to open a connection.
- * This should be a lot more sophisticated. XXX
- *)
-let open_connection () =
- let title = "Open connection to hypervisor" in
- let name =
- GToolbox.input_string ~title ~text:"xen:///" ~ok:"Open" "Connection:" in
- match name with
- | None -> ()
- | Some name ->
- (* If this fails, let the exception escape and be printed
- * in the global exception handler.
- *)
- let conn = C.connect ~name () in
- ignore (add_conn conn)
git.annexia.org / virt-top.git / blobdiff