aboutsummaryrefslogtreecommitdiffstats
path: root/lib/inets/examples/httpd_load_test/hdlt_client.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/inets/examples/httpd_load_test/hdlt_client.erl')
-rw-r--r--lib/inets/examples/httpd_load_test/hdlt_client.erl370
1 files changed, 370 insertions, 0 deletions
diff --git a/lib/inets/examples/httpd_load_test/hdlt_client.erl b/lib/inets/examples/httpd_load_test/hdlt_client.erl
new file mode 100644
index 0000000000..d65ac5a885
--- /dev/null
+++ b/lib/inets/examples/httpd_load_test/hdlt_client.erl
@@ -0,0 +1,370 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+%%----------------------------------------------------------------------
+%% Purpose: The HDLT client module.
+%% This is the traffic generator
+%%----------------------------------------------------------------------
+
+-module(hdlt_client).
+
+-export([
+ start/1,
+ stop/0,
+ start_inets/0,
+ start_service/1,
+ release/0,
+ node_info/0
+ ]).
+
+-export([
+ proxy/1
+ ]).
+
+-include("hdlt_logger.hrl").
+
+-define(CTRL, hdlt_ctrl).
+-define(PROXY, hdlt_proxy).
+
+-record(state,
+ {
+ mode = initial,
+ send_rate,
+ time,
+ stop_time,
+ url,
+ nof_reqs = 0,
+ nof_reps = 0,
+ last_req,
+ sizes,
+ socket_type,
+ cert_file
+ }).
+
+
+
+start(Debug) ->
+ proc_lib:start_link(?MODULE, proxy, [Debug]).
+
+stop() ->
+ (catch erlang:send(?PROXY, stop)),
+ ok.
+
+start_inets() ->
+ ?PROXY ! start_inets.
+
+start_service(Args) ->
+ ?PROXY ! {start_client, Args, self()},
+ receive
+ client_started ->
+ %% ?LOG("client service started"),
+ ok
+ end.
+
+release() ->
+ ?PROXY ! release.
+
+node_info() ->
+ ?PROXY ! {node_info, self()},
+ receive
+ {node_info, NodeInfo} ->
+ NodeInfo
+ end.
+
+
+%% ---------------------------------------------------------------------
+%%
+%% The proxy process
+%%
+
+proxy(Debug) ->
+ process_flag(trap_exit, true),
+ erlang:register(?PROXY, self()),
+ SName = lists:flatten(
+ io_lib:format("HDLT PROXY[~p,~p]", [self(), node()])),
+ ?SET_NAME(SName),
+ ?SET_LEVEL(Debug),
+ ?LOG("starting", []),
+ Ref = await_for_controller(10),
+ CtrlNode = node(Ref),
+ erlang:monitor_node(CtrlNode, true),
+ proc_lib:init_ack({ok, self()}),
+ ?DEBUG("started", []),
+ proxy_loop(Ref, CtrlNode, undefined).
+
+await_for_controller(N) when N > 0 ->
+ case global:whereis_name(hdlt_ctrl) of
+ Pid when is_pid(Pid) ->
+ erlang:monitor(process, Pid);
+ _ ->
+ timer:sleep(1000),
+ await_for_controller(N-1)
+ end;
+await_for_controller(_) ->
+ proc_lib:init_ack({error, controller_not_found, nodes()}),
+ timer:sleep(500),
+ init:stop().
+
+
+proxy_loop(Ref, CtrlNode, Client) ->
+ ?DEBUG("await command", []),
+ receive
+ stop ->
+ ?LOG("stop", []),
+ timer:sleep(1000),
+ halt();
+
+ start_inets ->
+ ?LOG("start the inets service framework", []),
+ %% inets:enable_trace(max, "/tmp/inets-httpc-trace.log", all),
+ case (catch inets:start()) of
+ ok ->
+ ?LOG("framework started", []),
+ proxy_loop(Ref, CtrlNode, Client);
+ Error ->
+ ?LOG("failed starting inets service framework: "
+ "~n Error: ~p", [Error]),
+ timer:sleep(1000),
+ halt()
+ end;
+
+ {start_client, Args, From} ->
+ ?LOG("start client with"
+ "~n Args: ~p", [Args]),
+ Client2 = spawn_link(fun() -> client(Args) end),
+ From ! client_started,
+ proxy_loop(Ref, CtrlNode, Client2);
+
+ release ->
+ ?LOG("release", []),
+ Client ! go,
+ proxy_loop(Ref, CtrlNode, Client);
+
+ {node_info, Pid} ->
+ ?LOG("received requets for node info", []),
+ NodeInfo = get_node_info(),
+ Pid ! {node_info, NodeInfo},
+ proxy_loop(Ref, CtrlNode, Client);
+
+ {'EXIT', Client, normal} ->
+ ?LOG("received normal exit message from client (~p)",
+ [Client]),
+ exit(normal);
+
+ {'EXIT', Client, Reason} ->
+ ?INFO("received exit message from client (~p)"
+ "~n Reason: ~p", [Client, Reason]),
+ %% Unexpected client termination, inform the controller and die
+ global:send(hdlt_ctrl, {client_exit, Client, node(), Reason}),
+ exit({client_exit, Reason});
+
+ {nodedown, CtrlNode} ->
+ ?LOG("received nodedown for controller node - terminate", []),
+ halt();
+
+ {'DOWN', Ref, process, _, _} ->
+ ?INFO("received DOWN message for controller - terminate", []),
+ %% The controller has terminated, dont care why, time to die
+ halt()
+
+ end.
+
+
+
+%% ---------------------------------------------------------------------
+%%
+%% The client process
+%%
+
+client([SocketType, CertFile, URLBase, Sizes, Time, SendRate, Debug]) ->
+ SName = lists:flatten(
+ io_lib:format("HDLT CLIENT[~p,~p]", [self(), node()])),
+ ?SET_NAME(SName),
+ ?SET_LEVEL(Debug),
+ ?LOG("starting with"
+ "~n SocketType: ~p"
+ "~n Time: ~p"
+ "~n SendRate: ~p", [SocketType, Time, SendRate]),
+ httpc:set_options([{max_pipeline_length, 0}]),
+ if
+ (SocketType =:= ssl) orelse
+ (SocketType =:= ossl) orelse
+ (SocketType =:= essl) ->
+ %% Ensure crypto and ssl started:
+ crypto:start(),
+ ssl:start();
+ true ->
+ ok
+ end,
+ State = #state{mode = idle,
+ url = URLBase,
+ time = Time,
+ send_rate = SendRate,
+ sizes = Sizes,
+ socket_type = SocketType,
+ cert_file = CertFile},
+ ?DEBUG("started", []),
+ client_loop(State).
+
+%% The point is to first start all client nodes and then this
+%% process. Then, when they are all started, the go-ahead, go,
+%% message is sent to let them lose at the same time.
+client_loop(#state{mode = idle,
+ time = Time,
+ send_rate = SendRate} = State) ->
+ ?DEBUG("[idle] awaiting the go command", []),
+ receive
+ go ->
+ ?LOG("[idle] received go", []),
+ erlang:send_after(Time, self(), stop),
+ NewState = send_requests(State, SendRate),
+ client_loop(NewState#state{mode = generating,
+ nof_reqs = SendRate})
+ end;
+
+%% In this mode the client is generating traffic.
+%% It will continue to do so until the stop message
+%% is received.
+client_loop(#state{mode = generating} = State) ->
+ receive
+ stop ->
+ ?LOG("[generating] received stop", []),
+ StopTime = timestamp(),
+ req_reply(State),
+ client_loop(State#state{mode = stopping, stop_time = StopTime});
+
+ {http, {_, {{_, 200, _}, _, _}}} ->
+ %% ?DEBUG("[generating] received reply - send another request", []),
+ NewState = send_requests(State, 1),
+ client_loop(NewState#state{nof_reps = NewState#state.nof_reps + 1,
+ nof_reqs = NewState#state.nof_reqs + 1});
+
+ {http, {ReqId, {error, Reason}}} ->
+ ?INFO("[generating] request ~p failed: "
+ "~n Reason: ~p"
+ "~n NofReqs: ~p"
+ "~n NofReps: ~p",
+ [ReqId, Reason, State#state.nof_reqs, State#state.nof_reps]),
+ exit({Reason, generating, State#state.nof_reqs, State#state.nof_reps});
+
+ Else ->
+ ?LOG("[generating] received unexpected message: "
+ "~n~p", [Else]),
+ unexpected_data(Else),
+ client_loop(State)
+ end;
+
+%% The client no longer issues any new requests, instead it
+%% waits for replies for all the oustanding requests to
+%% arrive.
+client_loop(#state{mode = stopping,
+ time = Time,
+ last_req = LastReqId} = State) ->
+ receive
+ {http, {LastReqId, {{_, 200, _}, _, _}}} ->
+ ?DEBUG("[stopping] received reply for last request (~p)", [LastReqId]),
+ time_to_complete(State),
+ ok;
+
+ {http, {ReqId, {{_, 200, _}, _, _}}} ->
+ ?DEBUG("[stopping] received reply ~p", [ReqId]),
+ client_loop(State);
+
+ {http, {ReqId, {error, Reason}}} ->
+ ?INFO("[stopping] request ~p failed: "
+ "~n Reason: ~p"
+ "~n NofReqs: ~p"
+ "~n NofReps: ~p",
+ [ReqId, Reason, State#state.nof_reqs, State#state.nof_reps]),
+ exit({Reason, stopping, State#state.nof_reqs, State#state.nof_reps});
+
+ Else ->
+ ?LOG("[stopping] received unexpected message: "
+ "~n~p", [Else]),
+ unexpected_data(Else),
+ client_loop(State)
+
+ after Time ->
+ ?INFO("timeout when"
+ "~n Number of requests: ~p"
+ "~n Number of replies: ~p",
+ [State#state.nof_reqs, State#state.nof_reps]),
+ exit({timeout, State#state.nof_reqs, State#state.nof_reps})
+ end.
+
+req_reply(#state{nof_reqs = NofReqs, nof_reps = NofReps}) ->
+ load_data({req_reply, node(), NofReqs, NofReps}).
+
+time_to_complete(#state{stop_time = StopTime}) ->
+ StoppedTime = os:timestamp(),
+ load_data({time_to_complete, node(), StopTime, StoppedTime}).
+
+load_data(Data) ->
+ global:send(?CTRL, {load_data, Data}).
+
+unexpected_data(Else) ->
+ global:send(?CTRL, {unexpected_data, Else}).
+
+
+send_requests(#state{sizes = Sizes} = State, N) ->
+ send_requests(State, N, Sizes).
+
+send_requests(State, 0, Sizes) ->
+ State#state{sizes = Sizes};
+send_requests(#state{socket_type = SocketType,
+ cert_file = CertFile} = State, N, [Sz | Sizes]) ->
+ URL = lists:flatten(io_lib:format("~s~w", [State#state.url, Sz])),
+ Method = get,
+ Request = {URL, []},
+ HTTPOptions =
+ case SocketType of
+ ip_comm ->
+ [];
+ _ ->
+ SslOpts = [{verify, 0},
+ {certfile, CertFile},
+ {keyfile, CertFile}],
+ case SocketType of
+ ssl ->
+ [{ssl, SslOpts}];
+ ossl ->
+ [{ssl, {ossl, SslOpts}}];
+ essl ->
+ [{ssl, {essl, SslOpts}}]
+ end
+ end,
+ Options = [{sync, false}],
+ {ok, Ref} = httpc:request(Method, Request, HTTPOptions, Options),
+ send_requests(State#state{last_req = Ref}, N-1, lists:append(Sizes, [Sz])).
+
+
+timestamp() ->
+ os:timestamp().
+
+
+get_node_info() ->
+ [{cpu_topology, erlang:system_info(cpu_topology)},
+ {heap_type, erlang:system_info(heap_type)},
+ {nof_schedulers, erlang:system_info(schedulers)},
+ {otp_release, erlang:system_info(otp_release)},
+ {version, erlang:system_info(version)},
+ {system_version, erlang:system_info(system_version)},
+ {system_architecture, erlang:system_info(system_architecture)}].
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 20:50:18 +0000