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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/cosEvent/src/CosEventChannelAdmin_ProxyPushConsumer_impl.erl
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The R13B03 release.OTP_R13B03
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+%%--------------------------------------------------------------------
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2001-2009. 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%
+%%
+%%
+%%----------------------------------------------------------------------
+%% File : CosEventChannelAdmin_ProxyPushConsumer_impl.erl
+%% Description :
+%%
+%%----------------------------------------------------------------------
+-module('CosEventChannelAdmin_ProxyPushConsumer_impl').
+
+%%----------------------------------------------------------------------
+%% Include files
+%%----------------------------------------------------------------------
+-include("CosEventChannelAdmin.hrl").
+-include("CosEventComm.hrl").
+-include("cosEventApp.hrl").
+
+%%----------------------------------------------------------------------
+%% External exports
+%%----------------------------------------------------------------------
+%% Mandatory
+-export([init/1,
+ terminate/2,
+ code_change/3,
+ handle_info/2]).
+
+%% Exports from "CosEventChannelAdmin::ProxyPushConsumer"
+-export([connect_push_supplier/3]).
+
+%% Exports from "CosEventComm::PushConsumer"
+-export([push/3,
+ disconnect_push_consumer/2]).
+
+%%----------------------------------------------------------------------
+%% Internal exports
+%%----------------------------------------------------------------------
+
+%%----------------------------------------------------------------------
+%% Records
+%%----------------------------------------------------------------------
+-record(state, {admin, admin_pid, channel, client, typecheck}).
+
+%%----------------------------------------------------------------------
+%% Macros
+%%----------------------------------------------------------------------
+
+%%======================================================================
+%% External functions
+%%======================================================================
+%%----------------------------------------------------------------------
+%% Function : init/1
+%% Returns : {ok, State} |
+%% {ok, State, Timeout} |
+%% ignore |
+%% {stop, Reason}
+%% Description: Initiates the server
+%%----------------------------------------------------------------------
+init([Admin, AdminPid, Channel, TypeCheck]) ->
+ process_flag(trap_exit, true),
+ {ok, #state{admin = Admin, admin_pid = AdminPid, channel = Channel,
+ 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_PushSupplier',
+ disconnect_push_supplier, 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 : If the Parnet Admin or the Channel terminates so must this object.
+%%----------------------------------------------------------------------
+handle_info({'EXIT', Pid, Reason}, #state{admin_pid = Pid} = State) ->
+ ?DBG("Parent Admin terminated ~p~n", [Reason]),
+ orber:dbg("[~p] CosEventChannelAdmin_ProxyPushConsumer: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_supplier
+%% Arguments :
+%% Returns :
+%% Description:
+%%----------------------------------------------------------------------
+connect_push_supplier(_OE_This, #state{client = undefined,
+ typecheck = TypeCheck} = State, NewClient) ->
+ case corba_object:is_nil(NewClient) of
+ true ->
+ ?DBG("A NIL client supplied.~n", []),
+ {reply, ok, State};
+ false ->
+ cosEventApp:type_check(NewClient, 'CosEventComm_PushSupplier', TypeCheck),
+ ?DBG("Connected to client.~n", []),
+ {reply, ok, State#state{client = NewClient}}
+ end;
+connect_push_supplier(_, _, _) ->
+ corba:raise(#'CosEventChannelAdmin_AlreadyConnected'{}).
+
+
+%%----------------------------------------------------------------------
+%% Function : push
+%% Arguments :
+%% Returns :
+%% Description:
+%%----------------------------------------------------------------------
+push(_OE_This, State, Any) ->
+ %% We should not use corba:reply here since if we block incoming
+ %% events this will prevent producers to flood the system.
+ ?DBG("Received Event ~p and forwarded it successfully.~n", [Any]),
+ 'oe_CosEventComm_Channel':send_sync(State#state.channel, Any),
+ {reply, ok, State}.
+
+%%----------------------------------------------------------------------
+%% Function : disconnect_push_consumer
+%% Arguments :
+%% Returns :
+%% Description:
+%%----------------------------------------------------------------------
+disconnect_push_consumer(_OE_This, State) ->
+ ?DBG("Disconnect invoked ~p~n", [State]),
+ {stop, normal, ok, State#state{client = undefined}}.
+
+%%======================================================================
+%% Internal functions
+%%======================================================================
+
+%%======================================================================
+%% END OF MODULE
+%%======================================================================