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%%--------------------------------------------------------------------
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2001-2009. 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%
%%
%%
%%----------------------------------------------------------------------
%% File : oe_CosEventComm_PusherS_impl.erl
%% Description :
%%
%%----------------------------------------------------------------------
-module(oe_CosEventComm_PusherS_impl).
%%----------------------------------------------------------------------
%% Include files
%%----------------------------------------------------------------------
-include_lib("orber/include/corba.hrl").
-include("CosEventChannelAdmin.hrl").
-include("CosEventComm.hrl").
-include("cosEventApp.hrl").
%%----------------------------------------------------------------------
%% External exports
%%----------------------------------------------------------------------
-export([init/1,
terminate/2,
code_change/3,
handle_info/2]).
%% Exports from "CosEventChannelAdmin::ProxyPushSupplier"
-export([connect_push_consumer/4]).
%% Exports from "CosEventComm::PushSupplier"
-export([disconnect_push_supplier/3]).
%%----------------------------------------------------------------------
%% Internal exports
%%----------------------------------------------------------------------
%% Exports from "oe_CosEventComm::Event"
-export([send/3, send_sync/4]).
%%----------------------------------------------------------------------
%% Records
%%----------------------------------------------------------------------
-record(state, {admin_pid, client, typecheck}).
%%----------------------------------------------------------------------
%% Macros
%%----------------------------------------------------------------------
%%======================================================================
%% External functions
%%======================================================================
%%----------------------------------------------------------------------
%% Function : init/1
%% Returns : {ok, State} |
%% {ok, State, Timeout} |
%% ignore |
%% {stop, Reason}
%% Description: Initiates the server
%%----------------------------------------------------------------------
init([AdminPid, TypeCheck]) ->
process_flag(trap_exit, true),
{ok, #state{admin_pid = AdminPid, typecheck = TypeCheck}}.
%%----------------------------------------------------------------------
%% Function : terminate/2
%% Returns : any (ignored by gen_server)
%% Description: Shutdown the server
%%----------------------------------------------------------------------
terminate(_Reason, #state{client = undefined}) ->
?DBG("Terminating ~p; no client connected.~n", [_Reason]),
ok;
terminate(_Reason, #state{client = Client} = _State) ->
?DBG("Terminating ~p~n", [_Reason]),
cosEventApp:disconnect('CosEventComm_PushConsumer',
disconnect_push_consumer, Client),
ok.
%%----------------------------------------------------------------------
%% Function : code_change/3
%% Returns : {ok, NewState}
%% Description: Convert process state when code is changed
%%----------------------------------------------------------------------
code_change(_OldVsn, State, _Extra) ->
{ok, State}.
%%---------------------------------------------------------------------%
%% function : handle_info
%% Arguments:
%% Returns : {noreply, State} |
%% {stop, Reason, State}
%% Effect : Functions demanded by the gen_server module.
%%----------------------------------------------------------------------
handle_info({'EXIT', Pid, Reason}, #state{admin_pid = Pid} = State) ->
?DBG("Parent Admin terminated ~p~n", [Reason]),
orber:dbg("[~p] oe_CosEventComm_PusherS_impl:handle_info(~p);~n"
"My Admin terminated and so will I.",
[?LINE, Reason], ?DEBUG_LEVEL),
{stop, Reason, State};
handle_info(_Info, State) ->
?DBG("Unknown Info ~p~n", [_Info]),
{noreply, State}.
%%---------------------------------------------------------------------%
%% Function : connect_push_consumer
%% Arguments :
%% Returns :
%% Description:
%%----------------------------------------------------------------------
connect_push_consumer(_OE_This, _, #state{client = undefined,
typecheck = TypeCheck} = State, NewClient) ->
case corba_object:is_nil(NewClient) of
true ->
orber:dbg("[~p] oe_CosEventComm_PusherS_impl:connect_push_consumer(..);~n"
"Supplied a NIL reference which is not allowed.",
[?LINE], ?DEBUG_LEVEL),
corba:raise(#'BAD_PARAM'{completion_status = ?COMPLETED_NO});
false ->
cosEventApp:type_check(NewClient, 'CosEventComm_PushConsumer', TypeCheck),
?DBG("Connected to client.~n", []),
{reply, ok, State#state{client = NewClient}}
end;
connect_push_consumer(_, _, _, _) ->
corba:raise(#'CosEventChannelAdmin_AlreadyConnected'{}).
%%---------------------------------------------------------------------%
%% Function : disconnect_push_supplier
%% Arguments :
%% Returns :
%% Description:
%%----------------------------------------------------------------------
disconnect_push_supplier(_OE_This, _, State) ->
?DBG("Disconnect invoked ~p ~n", [State]),
{stop, normal, ok, State#state{client = undefined}}.
%%======================================================================
%% Internal functions
%%======================================================================
%%----------------------------------------------------------------------
%% Function : send
%% Arguments :
%% Returns :
%% Description:
%%----------------------------------------------------------------------
send(_OE_This, #state{client = undefined} = State, _Any) ->
%% No consumer connected.
?DBG("Received event ~p but have no client.~n", [_Any]),
{noreply, State};
send(_OE_This, #state{client = Client} = State, Any) ->
%% Push Data
case catch 'CosEventComm_PushConsumer':push(Client, Any) of
ok ->
?DBG("Received event ~p and delivered it client.~n", [Any]),
{noreply, State};
{'EXCEPTION', #'CosEventComm_Disconnected'{}} ->
?DBG("Received event ~p but failed to deliver it since the client claims we are disconnected.~n", [Any]),
{stop, normal, State#state{client = undefined}};
Other ->
?DBG("Received event ~p but failed to deliver it to client.~n", [Any]),
orber:dbg("[~p] oe_CosEventComm_PusherS_impl:send(~p);~n"
"My Client behaves badly, returned ~p, so I will terminate.",
[?LINE, Any, Other], ?DEBUG_LEVEL),
{stop, normal, State}
end.
%%----------------------------------------------------------------------
%% Function : send_sync
%% Arguments :
%% Returns :
%% Description:
%%----------------------------------------------------------------------
send_sync(_OE_This, _OE_From, #state{client = undefined} = State, _Any) ->
%% No consumer connected.
?DBG("Received event ~p but have no client.~n", [_Any]),
{reply, ok, State};
send_sync(_OE_This, OE_From, #state{client = Client} = State, Any) ->
corba:reply(OE_From, ok),
%% Push Data
case catch 'CosEventComm_PushConsumer':push(Client, Any) of
ok ->
?DBG("Received event ~p and delivered (sync) it client.~n", [Any]),
{noreply, State};
{'EXCEPTION', #'CosEventComm_Disconnected'{}} ->
?DBG("Received event ~p but failed to deliver (sync) it since the client claims we are disconnected.~n", [Any]),
{stop, normal, State#state{client = undefined}};
Other ->
?DBG("Received event ~p but failed to deliver (sync) it to client.~n", [Any]),
orber:dbg("[~p] oe_CosEventComm_PusherS_impl:send_sync(~p);~n"
"My Client behaves badly, returned ~p, so I will terminate.",
[?LINE, Any, Other], ?DEBUG_LEVEL),
{stop, normal, State}
end.
%%======================================================================
%% END OF MODULE
%%======================================================================
|
