9 let log s = prerr_string s
12 module MQI = MQueryInterpreter.Make(MQICallbacks)
14 let broker_id = ref None
15 let my_own_id = Hbugs_tutors_common.init_tutor ()
16 let my_own_addr, my_own_port = "127.0.0.1", 50011
17 let my_own_url = sprintf "%s:%d" my_own_addr my_own_port
19 let is_authenticated id =
22 | Some broker_id -> id = broker_id
24 (* thread who do the dirty work *)
25 let slave (state, musing_id) =
27 prerr_endline (sprintf "Hi, I'm the slave for musing %s" musing_id);
28 let (proof, goal) = Hbugs_tutors_common.load_state state in
31 let choose_must must only = (* euristic: use 2nd precision level
32 1st is more precise but is more slow *)
34 | [] -> raise Empty_must
39 TacticChaser.searchPattern
40 ~output_html:prerr_endline ~choose_must () ~status:(proof, goal)
45 Eureka (Hints (List.map (fun uri -> Use_apply_Luke uri) uris))
46 with Empty_must -> Sorry
48 let answer = Musing_completed (my_own_id, musing_id, hint) in
49 ignore (Hbugs_messages.submit_req ~url:Hbugs_tutors_common.broker_url answer);
51 (sprintf "Bye, I've completed my duties (success = %b)" (hint <> Sorry))
53 (Pxp_types.At _) as e ->
54 let rec unbox_exception =
56 Pxp_types.At (_,e) -> unbox_exception e
59 prerr_endline ("Uncaught PXP exception: " ^ Pxp_types.string_of_exn e) ;
60 (* e could be the Thread.exit exception; otherwise we will release an *)
61 (* uncaught exception and the Pxp_types.At was already an uncaught *)
62 (* exception ==> no additional arm *)
63 raise (unbox_exception e)
66 let ids = Hashtbl.create 17 in
68 prerr_endline "ignoring request from unauthorized broker";
69 Exception ("forbidden", "")
72 | Start_musing (broker_id, state) ->
73 if is_authenticated broker_id then begin
74 prerr_endline "received Start_musing";
75 let new_musing_id = Hbugs_id_generator.new_musing_id () in
76 let id = Hbugs_deity.create slave (state, new_musing_id) in
78 (sprintf "starting a new musing (tid = %d, id = %s)" id new_musing_id);
79 Hashtbl.add ids new_musing_id id ;
80 (*ignore (Thread.create slave (state, new_musing_id));*)
81 Musing_started (my_own_id, new_musing_id)
82 end else (* broker unauthorized *)
84 | Abort_musing (broker_id, musing_id) ->
85 prerr_endline "CSC: Abort_musing received" ;
86 if is_authenticated broker_id then begin
87 (* prerr_endline "Ignoring 'Abort_musing' message ..."; *)
89 Hbugs_deity.kill (Hashtbl.find ids musing_id) ;
90 Hashtbl.remove ids musing_id ;
93 | Hbugs_deity.Can_t_kill _ ->
94 prerr_endline ("Can not kill slave " ^ musing_id)) ;
95 Musing_aborted (my_own_id, musing_id)
96 end else (* broker unauthorized *)
99 Exception ("unexpected_msg",
100 Hbugs_messages.string_of_msg unexpected_msg)
102 let callback (req: Http_types.request) outchan =
104 let req_msg = Hbugs_messages.msg_of_string req#body in
105 let answer = hbugs_callback req_msg in
106 Http_daemon.respond ~body:(Hbugs_messages.string_of_msg answer) outchan
107 with Hbugs_messages.Parse_error (subj, reason) ->
109 ~body:(Hbugs_messages.string_of_msg
110 (Exception ("parse_error", reason)))
114 let mqi_options = "" in (* default MathQL interpreter options *)
116 Sys.catch_break true;
117 at_exit (fun () -> Hbugs_tutors_common.unregister_from_broker my_own_id);
119 Some (Hbugs_tutors_common.register_to_broker
120 my_own_id my_own_url "FOO" "Search_pattern_apply tutor");
121 ignore (MQI.init mqi_options) ;
123 ~addr:my_own_addr ~port:my_own_port ~mode:`Thread callback;
124 MQI.close mqi_options
125 with Sys.Break -> () (* exit nicely, invoking at_exit functions *)