diff options
Diffstat (limited to 'lib/cosEvent/src/oe_CosEventComm_PusherS_impl.erl')
| -rw-r--r-- | lib/cosEvent/src/oe_CosEventComm_PusherS_impl.erl | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/lib/cosEvent/src/oe_CosEventComm_PusherS_impl.erl b/lib/cosEvent/src/oe_CosEventComm_PusherS_impl.erl new file mode 100644 index 0000000000..c64b01ea1d --- /dev/null +++ b/lib/cosEvent/src/oe_CosEventComm_PusherS_impl.erl @@ -0,0 +1,217 @@ +%%-------------------------------------------------------------------- +%% +%% %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 +%%====================================================================== + |