%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2012-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(proto).
-compile(export_all).
-record(conn_state, {id, pid, ref, data}).
%% TEST1: N connections (same key) -> N conn pids
%% TEST2: N connections (same key) -> 1 conn pid
%% TEST3: N aliases (same key) -> N conn pids
%% TEST4: N aliases (same key) -> 1 conn pid
open(KeyOrAlias) ->
case ct:get_config(KeyOrAlias) of
undefined ->
{error,{not_available,KeyOrAlias}};
ConnData ->
io:format("Opening connection with ~p~n", [ConnData]),
%% if KeyOrAlias == Key, each call returns unique handle
%% if KeyOrAlias == Alias, successive calls return same handle
{ok,Handle} = ct_gen_conn:start(ConnData,
[],
?MODULE,
[{name,KeyOrAlias}]),
io:format("Handle for ~p = ~p~n", [KeyOrAlias,Handle]),
Handle
end.
close(AliasOrHandle) ->
Handle = get_handle(AliasOrHandle),
io:format("Closing connection for ~p (~p)~n", [AliasOrHandle,Handle]),
case ct_gen_conn:stop(Handle) of
E = {error,_} ->
E;
Result ->
Result
end.
kill_conn_proc(AliasOrHandle) ->
ConnPid = ct_gen_conn:get_conn_pid(get_handle(AliasOrHandle)),
io:format("Killing connection process ~p~n", [ConnPid]),
ConnPid ! fail,
ok.
send(_) ->
ok.
%%%-----------------------------------------------------------------
%%%
init(KeyOrAlias, ConnData, []) ->
Addr = proplists:get_value(addr, ConnData),
Port = proplists:get_value(port, ConnData),
Ref = make_ref(),
Starter = self(),
MultConnPids = proplists:get_value(multiple_conn_pids, ConnData),
ConnPid =
case MultConnPids of
true ->
spawn(fun() -> active_conn(Starter, KeyOrAlias, Ref,
ConnData) end);
_ ->
ConnMgr = proplists:get_value(conn_mgr_name, ConnData),
case whereis(ConnMgr) of
undefined ->
MgrPid =
spawn(fun() -> active_conn(Starter, KeyOrAlias,
Ref, ConnData) end),
receive MgrPid ->
MgrPid
end;
MgrPid when is_pid(MgrPid) ->
MgrPid ! {connect,Ref},
MgrPid
end
end,
io:format("Connection ~p opened on ~p:~p -> ~p (~p)~n",
[KeyOrAlias,Addr,Port,ConnPid,Ref]),
{ok,ConnPid,#conn_state{id=KeyOrAlias, pid=ConnPid, ref=Ref, data=ConnData}}.
terminate(ConnPid, #conn_state{id=Id, pid=ConnPid, ref = Ref, data=Data}) ->
case proplists:get_value(multiple_conn_pids, Data) of
true ->
ConnPid ! close;
_ ->
ConnPid ! {close,Ref}
end,
io:format("Connection ~p on ~p (~p) closing!~n", [Id,ConnPid,Ref]),
ok.
reconnect(ConnData, State = #conn_state{id=Id, ref=DeadRef}) ->
io:format("Reconnect for ~p initiated...~n", [DeadRef]),
case application:get_env(ct_test, reconnect) of
{ok,true} ->
ConnMgr = proplists:get_value(conn_mgr_name, ConnData),
NewRef = make_ref(),
Starter = self(),
ConnPid =
case proplists:get_value(multiple_conn_pids, ConnData) of
true ->
spawn(fun() ->
active_conn(Starter, Id, NewRef,
ConnData)
end);
_ ->
case whereis(ConnMgr) of
undefined ->
MgrPid =
spawn(fun() ->
active_conn(Starter, Id,
NewRef, ConnData)
end),
receive MgrPid ->
MgrPid
end;
MgrPid ->
MgrPid ! {reconnect,DeadRef,NewRef},
MgrPid
end
end,
io:format("Connection ~p reopened on ~p (~p)~n",
[Id,ConnPid,NewRef]),
{ok,ConnPid,State#conn_state{pid=ConnPid, ref=NewRef}};
_ ->
{error,no_reconnection_allowed}
end.
%%%-----------------------------------------------------------------
%%%
active_conn(Starter, Id, Ref, ConnData) ->
ConnMgr = proplists:get_value(conn_mgr_name, ConnData),
case proplists:get_value(multiple_conn_pids, ConnData) of
true ->
ok;
_ ->
register(ConnMgr,self()),
io:format("Connection manager ~p on ~p started for "
"~p and ~p~n",
[ConnMgr,self(),Id,Ref])
end,
Starter ! self(),
active_conn_loop(ConnData, [Ref]).
active_conn_loop(ConnData, Conns) ->
receive
{connect,Ref} ->
io:format("Connecting ~p on ~p~n",
[Ref,self()]),
active_conn_loop(ConnData, [Ref | Conns]);
{reconnect,DeadRef,NewRef} ->
Conns1 = [NewRef | lists:delete(DeadRef, Conns)],
io:format("Reconnecting on ~p: ~p -> ~p~n",
[self(),DeadRef,NewRef]),
active_conn_loop(ConnData, Conns1);
close ->
io:format("Conn process ~p shutting down~n", [self()]),
ok;
{close,Ref} ->
io:format("Closing connection ~p on ~p~n", [Ref,self()]),
case proplists:delete(Ref, Conns) of
[] ->
io:format("Last connection on ~p closed, "
"now stopping~n", [self()]),
ok;
Conns1 ->
active_conn_loop(ConnData, Conns1)
end;
fail ->
io:format("Connection process not feeling good...~n", []),
exit(kaboom);
{respond,To} ->
To ! {self(),hello},
active_conn_loop(ConnData, Conns)
end.
%%%-----------------------------------------------------------------
%%%
get_handle(AliasOrHandle) when is_pid(AliasOrHandle) ->
AliasOrHandle;
get_handle(AliasOrHandle) ->
{ok,{H,_}} = ct_util:get_connection(AliasOrHandle,
?MODULE),
H.
