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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/oe_CosEventComm_PusherS_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 : 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
+%%======================================================================
+