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444 | ------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2004-2014, AdaCore --
-- --
-- This is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This software 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 --
-- distributed with this software; see file COPYING3. If not, go --
-- to http://www.gnu.org/licenses for a complete copy of the license. --
------------------------------------------------------------------------------
-- Test for heavy loading
with Ada.Calendar;
with Ada.Containers.Indefinite_Doubly_Linked_Lists;
with Ada.Exceptions;
with Ada.Strings.Unbounded;
with Ada.Strings.Hash;
with Ada.Task_Attributes;
with Ada.Task_Identification;
with Ada.Text_IO;
with AWS.Config.Set;
with AWS.Client;
with AWS.MIME;
with AWS.Net.Log;
with AWS.Net.SSL;
with AWS.Parameters;
with AWS.Response;
with AWS.Server.Status;
with AWS.Status;
with AWS.Utils;
package body S_HLoad_Pack is
use Ada;
use Ada.Exceptions;
use Ada.Strings.Unbounded;
use AWS;
Max_Client : constant := 18;
Max_Line : constant := 16;
Client_Count : constant := 300;
Client_Error : Boolean := False with Atomic;
package String_Lists is
new Ada.Containers.Indefinite_Doubly_Linked_Lists (String);
package Debug_Dumps is
new Ada.Task_Attributes (String_Lists.List, String_Lists.Empty_List);
procedure Debug_Output (Text : String);
procedure Error_Callback
(Socket : Net.Socket_Type'Class; Message : String);
-- The callback procedure which is called for every socket error
procedure Event_Callback
(Action : Net.Log.Event_Type; Socket : Net.Socket_Type'Class);
function CB (Request : Status.Data) return Response.Data;
subtype Count is Long_Integer;
protected Interval_Timer is
procedure Reset;
procedure Stamp;
function Statistic_Image (Timed : Boolean) return String;
private
Last : Ada.Calendar.Time;
Start : Ada.Calendar.Time;
Counter : Count;
Max_Index : Count;
Min_Index : Count;
Max : Duration;
Min : Duration;
end Interval_Timer;
--------
-- CB --
--------
function CB (Request : Status.Data) return Response.Data is
P : constant AWS.Parameters.List := AWS.Status.Parameters (Request);
begin
Interval_Timer.Stamp;
return Response.Build
(MIME.Text_HTML, "Data:" & AWS.Parameters.Get (P, "PARAM"));
end CB;
Counter : Utils.Counter (100_000);
------------------
-- Debug_Output --
------------------
procedure Debug_Output (Text : String) is
Value : Natural;
begin
Counter.Increment (Value => Value);
declare
Cnt_Img : constant String := Natural'Image (Value);
begin
Debug_Dumps.Reference.Append
(Cnt_Img (Cnt_Img'Last - 4 .. Cnt_Img'Last) & ' ' & Text);
end;
end Debug_Output;
--------------------
-- Error_Callback --
--------------------
procedure Error_Callback
(Socket : Net.Socket_Type'Class; Message : String)
is
FD : constant Integer := Socket.Get_FD;
begin
if FD = Net.No_Socket then
Debug_Output (Message & ASCII.LF);
else
Debug_Output
(Socket.Get_Port'Img & Socket.Peer_Port'Img & FD'Img & ' '
& Message & ASCII.LF);
end if;
exception
when E : others =>
Debug_Output
(Message & ' ' & Exception_Message (E) & ASCII.LF);
end Error_Callback;
--------------------
-- Event_Callback --
--------------------
procedure Event_Callback
(Action : Net.Log.Event_Type; Socket : Net.Socket_Type'Class)
is
FD : constant Integer := Socket.Get_FD;
begin
if FD = Net.No_Socket then
Debug_Output (Action'Img & " closed socket" & ASCII.LF);
else
Debug_Output
(Action'Img
& (if Net.Log."=" (Action, Net.Log.Connect)
then Socket.Peer_Port'Img & Socket.Get_Port'Img
else Socket.Get_Port'Img & Socket.Peer_Port'Img)
& FD'Img & ' ' & ASCII.LF);
end if;
exception
when E : others =>
Debug_Output
(Action'Img & FD'Img & ' ' & Exception_Message (E) & ASCII.LF);
end Event_Callback;
--------------------
-- Interval_Timer --
--------------------
protected body Interval_Timer is
-----------
-- Reset --
-----------
procedure Reset is
begin
Counter := 0;
Max_Index := 0;
Min_Index := 0;
Max := 0.0;
Min := Duration'Last;
end Reset;
-----------
-- Stamp --
-----------
procedure Stamp is
use type Ada.Calendar.Time;
Now : constant Ada.Calendar.Time := Ada.Calendar.Clock;
Interval : Duration;
begin
if Counter = 0 then
Start := Now;
else
Interval := Now - Last;
if Interval > Max then
Max := Interval;
Max_Index := Counter;
elsif Interval < Min then
Min := Interval;
Min_Index := Counter;
end if;
end if;
Last := Now;
Counter := Counter + 1;
end Stamp;
---------------------
-- Statistic_Image --
---------------------
function Statistic_Image (Timed : Boolean) return String is
use type Ada.Calendar.Time;
Result : constant String := "Counter:" & Count'Image (Counter);
begin
if Timed then
return Result & ASCII.LF
& "Min: index" & Count'Image (Min_Index)
& "; interval:" & Duration'Image (Min) & " sec." & ASCII.LF
& "Max: index" & Count'Image (Max_Index)
& "; interval:" & Duration'Image (Max) & " sec." & ASCII.LF
& "Average:"
& Duration'Image (Duration (Counter) / (Last - Start))
& " requests in second.";
else
return Result;
end if;
end Statistic_Image;
end Interval_Timer;
---------
-- Run --
---------
procedure Run (Timed : Boolean := False; Debug : Boolean := False) is
task type Client is
entry Start (Name : String);
entry Pause;
entry Stop;
end Client;
WS : Server.HTTP;
Cfg : Config.Object;
Sfg : Net.SSL.Config;
Clients : array (1 .. Max_Client) of Client;
Hang : array (Clients'Range) of Boolean := (others => False);
Delay_Time : Duration := 60.0;
procedure Dump_Task (Id : Task_Identification.Task_Id; Hang : Boolean);
------------
-- Client --
------------
task body Client is
Name : Unbounded_String;
Connect : AWS.Client.HTTP_Connection;
begin
accept Start (Name : String) do
Client.Name := To_Unbounded_String (Name);
end Start;
AWS.Client.Create
(Connect,
AWS.Server.Status.Local_URL (WS),
Timeouts => AWS.Client.Timeouts
(Connect => 5.0,
Send => 15.0, Receive => 15.0, Response => 15.0));
for K in 1 .. Client_Count loop
begin
declare
K_Img : constant String
:= Utils.Image (K) & '-' & To_String (Name);
R : AWS.Response.Data;
Expected : constant String := "Data:" & K_Img;
begin
AWS.Client.Get (Connect, R, "/toto?PARAM=" & K_Img);
if Expected /= String'(AWS.Response.Message_Body (R)) then
Text_IO.Put_Line
("nok " & K_Img
& " expected " & Expected
& " -> found "
& String'(AWS.Response.Message_Body (R)));
Client_Error := True;
exit;
end if;
end;
exception
when E : others =>
Text_IO.Put_Line
("client " & To_String (Name)
& " request " & Utils.Image (K) & " aborted.");
Text_IO.Put_Line
(" => " & Exceptions.Exception_Information (E));
Client_Error := True;
exit;
end;
end loop;
AWS.Client.Close (Connect);
accept Pause;
accept Stop;
end Client;
---------------
-- Dump_Task --
---------------
procedure Dump_Task (Id : Task_Identification.Task_Id; Hang : Boolean) is
Dump : String_Lists.List;
DFO : Text_IO.File_Type;
begin
if not Debug then
return;
end if;
Dump := Debug_Dumps.Value (Id);
Text_IO.Create (DFO, Name => Task_Identification.Image (Id));
if Hang then
Text_IO.Put_Line (DFO, "HANG");
end if;
Text_IO.Put_Line (DFO, Net.SSL.Version);
for Line of Dump loop
Text_IO.Put (DFO, Line);
end loop;
Text_IO.Close (DFO);
end Dump_Task;
begin -- Run
Interval_Timer.Reset;
if Debug then
Net.SSL.Set_Debug (7, Debug_Output'Access);
Net.Log.Start
(Write => null,
Event => Event_Callback'Access,
Error => Error_Callback'Access);
end if;
Config.Set.Server_Name (Cfg, "Heavy Loaded");
Config.Set.Server_Port (Cfg, 0);
Config.Set.Security (Cfg, True);
Config.Set.Max_Connection (Cfg, Max_Line);
Config.Set.Session (Cfg, True);
Config.Set.TLS_Ticket_Support (Cfg, False);
-- Set SSL session size a bit less than number of clients, to provoke
-- session extrusion.
Config.Set.SSL_Session_Cache_Size (Cfg, Max_Client - 1);
Server.Start (WS, CB'Access, Cfg);
Ada.Text_IO.Put_Line ("server started."); Ada.Text_IO.Flush;
delay 1.0;
for K in Clients'Range loop
Clients (K).Start ("client" & Utils.Image (K));
Text_IO.Put_Line ("client " & Utils.Image (K) & " started.");
end loop;
for K in Clients'Range loop
select Clients (K).Pause;
or delay Delay_Time;
Text_IO.Put_Line ("Client" & K'Img & " hangs.");
Hang (K) := True;
Client_Error := True;
Delay_Time := Delay_Time / 3;
end select;
end loop;
if Client_Error then
-- Dump debug output of the all clients and server lines
for K in Clients'Range loop
Dump_Task (Clients (K)'Identity, Hang (K));
end loop;
declare
Tasks : constant Server.Task_Id_Array := Server.Line_Tasks (WS);
begin
for K in Tasks'Range loop
Dump_Task (Tasks (K), False);
end loop;
end;
end if;
for K in Clients'Range loop
Text_IO.Put ("client " & Utils.Image (K));
if Hang (K) then
abort Clients (K);
Text_IO.Put_Line (" aborted.");
else
Clients (K).Stop;
Text_IO.Put_Line (" stopped.");
end if;
end loop;
Server.Shutdown (WS);
Ada.Text_IO.Put_Line ("server stopped.");
Ada.Text_IO.Put_Line (Interval_Timer.Statistic_Image (Timed));
exception
when E : others =>
Text_IO.Put_Line
("main task" & ASCII.LF & Exceptions.Exception_Information (E));
end Run;
end S_HLoad_Pack;
|