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(* This file is part of Marionnet, a virtual network laboratory
Copyright (C) 2010 Jean-Vincent Loddo
Copyright (C) 2010 Université Paris 13
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, see <http://www.gnu.org/licenses/>. *)
(** "cloud" component implementation. *)
#load "where_p4.cmo"
;;
open Gettext
(* Cloud related constants: *)
(* TODO: make it configurable! *)
module Const = struct
let port_no_default = 2
let port_no_min = 2
let port_no_max = 2
end
(* The type of data exchanged with the dialog: *)
module Data = struct
type t = {
name : string;
label : string;
old_name : string;
}
let to_string t = "<obj>" (* TODO? *)
end (* Data *)
module Make_menus (Params : sig
val st : State.globalState
val packing : [ `toolbar of GButton.toolbar | `menu_parent of Menu_factory.menu_parent ]
end) = struct
open Params
module Toolbar_entry = struct
let imagefile = "ico.cloud.palette.png"
let tooltip = s_ "Unknown layer 2 sub-network"
let packing = Params.packing
end
module Add = struct
include Data
let key = None
let ok_callback t = Gui_bricks.Ok_callback.check_name t.name t.old_name st#network#name_exists t
let dialog () =
let name = st#network#suggestedName "N" in
Dialog_add_or_update.make ~title:(s_ "Add cloud") ~name ~ok_callback ()
let reaction { name = name; label = label } =
let action () = ignore (
new User_level_cloud.cloud
~network:st#network
~name
~label
()) in
st#network_change action ();
end
module Properties = struct
include Data
let dynlist () = st#network#get_nodes_that_can_startup ~devkind:`Cloud ()
let dialog name () =
let d = (st#network#get_node_by_name name) in
let title = (s_ "Modify cloud")^" "^name in
let label = d#get_label in
Dialog_add_or_update.make ~title ~name ~label ~ok_callback:Add.ok_callback ()
let reaction { name = name; label = label; old_name = old_name } =
let d = (st#network#get_node_by_name old_name) in
let h = ((Obj.magic d):> User_level_cloud.cloud) in
let action () = h#update_cloud_with ~name ~label in
st#network_change action ();
end
module Remove = struct
type t = string (* just the name *)
let to_string = (Printf.sprintf "name = %s\n")
let dynlist = Properties.dynlist
let dialog name () =
Gui_bricks.Dialog.yes_or_cancel_question
~title:(s_ "Remove")
~markup:(Printf.sprintf (f_ "Are you sure that you want to remove %s\nand all the cables connected to this %s?") name (s_ "cloud"))
~context:name
()
let reaction name =
let d = (st#network#get_node_by_name name) in
let h = ((Obj.magic d):> User_level_cloud.cloud) in
let action () = h#destroy in
st#network_change action ();
end
module Startup = struct
type t = string (* just the name *)
let to_string = (Printf.sprintf "name = %s\n")
let dynlist = Properties.dynlist
let dialog = Menu_factory.no_dialog_but_simply_return_name
let reaction name = (st#network#get_node_by_name name)#startup
end
module Stop = struct
type t = string (* just the name *)
let to_string = (Printf.sprintf "name = %s\n")
let dynlist () = st#network#get_nodes_that_can_gracefully_shutdown ~devkind:`Cloud ()
let dialog = Menu_factory.no_dialog_but_simply_return_name
let reaction name = (st#network#get_node_by_name name)#gracefully_shutdown
end
module Suspend = struct
type t = string (* just the name *)
let to_string = (Printf.sprintf "name = %s\n")
let dynlist () = st#network#get_nodes_that_can_suspend ~devkind:`Cloud ()
let dialog = Menu_factory.no_dialog_but_simply_return_name
let reaction name = (st#network#get_node_by_name name)#suspend
end
module Resume = struct
type t = string (* just the name *)
let to_string = (Printf.sprintf "name = %s\n")
let dynlist () = st#network#get_nodes_that_can_resume ~devkind:`Cloud ()
let dialog = Menu_factory.no_dialog_but_simply_return_name
let reaction name = (st#network#get_node_by_name name)#resume
end
module Create_entries =
Gui_toolbar_COMPONENTS_layouts.Layout_for_network_node (Params) (Toolbar_entry) (Add) (Properties) (Remove) (Startup) (Stop) (Suspend) (Resume)
(* Subscribe this kind of component to the network club: *)
st#network#subscribe_a_try_to_add_procedure Eval_forest_child.try_to_add_cloud;
end
(*-----*)
WHERE
(*-----*)
module Dialog_add_or_update = struct
(* This function may be useful for testing the widget creation without
recompiling the whole project. *)
let make
?(title="Add cloud")
?(name="")
?label
?(help_callback=help_callback) (* defined backward with "WHERE" *)
?(ok_callback=(fun data -> Some data))
?(dialog_image_file=Initialization.Path.images^"ico.cloud.dialog.png")
() :'result option =
let old_name = name in
let (w,_,name,label) =
Gui_bricks.Dialog_add_or_update.make_window_image_name_and_label
~title
~image_file:dialog_image_file
~image_tooltip:(s_ "Unknown layer 2 sub-network")
~name
~name_tooltip:(s_ "Sub-network name. This name must be unique in the virtual network. Suggested: N1, N2, ... ")
?label
()
in
let get_widget_data () :'result =
let name = name#text in
let label = label#text in
{ Data.name = name;
Data.label = label;
Data.old_name = old_name;
}
in
(* The result of make is the result of the dialog loop (of type 'result option): *)
Gui_bricks.Dialog_run.ok_or_cancel w ~ok_callback ~help_callback ~get_widget_data ()
(*-----*)
WHERE
(*-----*)
let help_callback =
let title = (s_ "ADD OR MODIFY A CLOUD" ) in
let msg = (s_ "In this dialog window you can define the name of a cloud. \
This component is an Ethernet network with an unknown internal \
structure introducing delays and other anomalies when packets \
pass through.\n\
Once the cloud is defined, use the tab 'Anomalies' to control delays, \
frame loss and the other anomalies.")
in Simple_dialogs.help title msg
end
(*-----*)
WHERE
(*-----*)
module Eval_forest_child = struct
let try_to_add_cloud (network:User_level.network) ((root,children):Xforest.tree) =
try
(match root with
| ("cloud", attrs) ->
let name = List.assoc "name" attrs in
Log.printf "Importing cloud \"%s\"...\n" name;
let x = new User_level_cloud.cloud ~network ~name () in
x#from_tree ("cloud", attrs) children ;
Log.printf "Cloud \"%s\" successfully imported.\n" name;
true
| _ ->
false
)
with _ -> false
end (* module Eval_forest_child *)
(*-----*)
WHERE
(*-----*)
module User_level_cloud = struct
class cloud =
fun ~network
~name
?label
() ->
object (self) inherit OoExtra.destroy_methods ()
inherit
User_level.node_with_defects
~network
~name ?label ~devkind:`Cloud
~port_no:Const.port_no_default
~port_no_min:Const.port_no_min
~port_no_max:Const.port_no_max
~user_port_offset:0
~port_prefix:"port"
()
as self_as_node_with_defects
method defects_device_type = "cloud"
method polarity = User_level.Intelligent (* Because it is didactically meaningless *)
method string_of_devkind = "cloud"
method dotImg iconsize =
let imgDir = Initialization.Path.images in
(imgDir^"ico.cloud."^(self#string_of_simulated_device_state)^"."^iconsize^".png")
method update_cloud_with ~name ~label =
self_as_node_with_defects#update_with ~name ~label ~port_no:2;
(** Create the simulated device *)
method private make_simulated_device =
((new Simulation_level_cloud.cloud
~parent:self
~unexpected_death_callback:self#destroy_because_of_unexpected_death
()) :> User_level.node Simulation_level.device)
method to_tree =
Forest.tree_of_leaf ("cloud", [
("name" , self#get_name );
("label" , self#get_label);
])
method eval_forest_attribute = function
| ("name" , x ) -> self#set_name x
| ("label" , x ) -> self#set_label x
| _ -> () (* Forward-comp. *)
end (* class cloud *)
end (* module User_level_cloud *)
(*-----*)
WHERE
(*-----*)
module Simulation_level_cloud = struct
open Daemon_language
class ['parent] cloud =
fun (* ~id *)
~(parent:'parent)
~unexpected_death_callback
() ->
object(self)
inherit ['parent] Simulation_level.device
~parent
~hublet_no:2
~unexpected_death_callback
()
as super
method device_type = "cloud"
val internal_cable_process = ref None
method private get_internal_cable_process =
match !internal_cable_process with
Some internal_cable_process -> internal_cable_process
| None -> failwith "cloud: get_the_internal_cable_process was called when there is no such process"
initializer
()
method spawn_processes =
(* Create the internal cable process and spawn it: *)
let the_internal_cable_process =
Simulation_level.make_ethernet_cable_process
~left_end:(self#get_hublet_process_of_port 0)
~right_end:(self#get_hublet_process_of_port 1)
~leftward_defects:(parent#ports_card#get_my_inward_defects_by_index 0)
~rightward_defects:(parent#ports_card#get_my_outward_defects_by_index 0)
~unexpected_death_callback:self#execute_the_unexpected_death_callback
()
in
internal_cable_process := Some the_internal_cable_process;
the_internal_cable_process#spawn
method terminate_processes =
(* Terminate the internal cable process: *)
(try self#get_internal_cable_process#terminate with _ -> ());
(* Unreference it: *)
internal_cable_process := None;
(** As clouds are stateless from the point of view of the user, stop/continue
aren't distinguishable from terminate/spawn: *)
method stop_processes = self#terminate_processes
method continue_processes = self#spawn_processes
end;;
end (* module Simulation_level_cloud *)
(** Just for testing: *)
let test = Dialog_add_or_update.make
|