8 module MQI = MQueryInterpreter
11 let broker_id = ref None
12 let my_own_id = Hbugs_tutors.init_tutor ()
13 let my_own_addr, my_own_port = "127.0.0.1", 50011
14 let my_own_url = sprintf "%s:%d" my_own_addr my_own_port
15 let environment_file = "search_pattern_apply.environment"
16 let dump_environment_on_exit = false
18 let is_authenticated id =
21 | Some broker_id -> id = broker_id
23 (* thread who do the dirty work *)
24 let slave mqi_handle (state, musing_id) =
26 prerr_endline (sprintf "Hi, I'm the slave for musing %s" musing_id);
27 let (proof, goal) = Hbugs_tutors.load_state state in
30 let choose_must must only = (* euristic: use 2nd precision level
31 1st is more precise but is more slow *)
33 | [] -> raise Empty_must
38 TacticChaser.matchConclusion mqi_handle
39 ~output_html:prerr_endline ~choose_must () ~status:(proof, goal)
44 Eureka (Hints (List.map (fun uri -> Use_apply uri) uris))
45 with Empty_must -> Sorry
47 let answer = Musing_completed (my_own_id, musing_id, hint) in
48 ignore (Hbugs_messages.submit_req ~url:Hbugs_tutors.broker_url answer);
50 (sprintf "Bye, I've completed my duties (success = %b)" (hint <> Sorry))
52 (Pxp_types.At _) as e ->
53 let rec unbox_exception =
55 Pxp_types.At (_,e) -> unbox_exception e
58 prerr_endline ("Uncaught PXP exception: " ^ Pxp_types.string_of_exn e) ;
59 (* e could be the Thread.exit exception; otherwise we will release an *)
60 (* uncaught exception and the Pxp_types.At was already an uncaught *)
61 (* exception ==> no additional arm *)
62 raise (unbox_exception e)
64 let hbugs_callback mqi_handle =
65 let ids = Hashtbl.create 17 in
67 prerr_endline "ignoring request from unauthorized broker";
68 Exception ("forbidden", "")
71 | Start_musing (broker_id, state) ->
72 if is_authenticated broker_id then begin
73 prerr_endline "received Start_musing";
74 let new_musing_id = Hbugs_id_generator.new_musing_id () in
75 let id = ExtThread.create (slave mqi_handle) (state, new_musing_id) in
76 prerr_endline (sprintf "starting a new musing (id = %s)" new_musing_id);
77 Hashtbl.add ids new_musing_id id;
78 (*ignore (Thread.create slave (state, new_musing_id));*)
79 Musing_started (my_own_id, new_musing_id)
80 end else (* broker unauthorized *)
82 | Abort_musing (broker_id, musing_id) ->
83 prerr_endline "CSC: Abort_musing received" ;
84 if is_authenticated broker_id then begin
85 (* prerr_endline "Ignoring 'Abort_musing' message ..."; *)
87 ExtThread.kill (Hashtbl.find ids musing_id) ;
88 Hashtbl.remove ids musing_id ;
91 | ExtThread.Can_t_kill _ ->
92 prerr_endline ("Can not kill slave " ^ musing_id)) ;
93 Musing_aborted (my_own_id, musing_id)
94 end else (* broker unauthorized *)
97 Exception ("unexpected_msg",
98 Hbugs_messages.string_of_msg unexpected_msg)
100 let callback mqi_handle (req: Http_types.request) outchan =
102 let req_msg = Hbugs_messages.msg_of_string req#body in
103 let answer = hbugs_callback mqi_handle req_msg in
104 Http_daemon.respond ~body:(Hbugs_messages.string_of_msg answer) outchan
105 with Hbugs_messages.Parse_error (subj, reason) ->
107 ~body:(Hbugs_messages.string_of_msg
108 (Exception ("parse_error", reason)))
111 let restore_environment () =
112 let ic = open_in environment_file in
113 prerr_endline "Restoring environment ...";
114 CicEnvironment.restore_from_channel
115 ~callback:(fun uri -> prerr_endline uri) ic;
116 prerr_endline "... done!";
119 let dump_environment () =
120 let oc = open_out environment_file in
121 prerr_endline "Dumping environment ...";
122 CicEnvironment.dump_to_channel
123 ~callback:(fun uri -> prerr_endline uri) oc;
124 prerr_endline "... done!";
129 Sys.catch_break true;
131 if dump_environment_on_exit then
133 Hbugs_tutors.unregister_from_broker my_own_id);
135 Some (Hbugs_tutors.register_to_broker
136 my_own_id my_own_url "FOO" "Search_pattern_apply tutor");
137 let mqi_handle = MQIC.init ~log:prerr_string () in
138 if Sys.file_exists environment_file then
139 restore_environment ();
141 ~addr:my_own_addr ~port:my_own_port ~mode:`Thread (callback mqi_handle);
142 MQIC.close mqi_handle
143 with Sys.Break -> () (* exit nicely, invoking at_exit functions *)