From 28f5ad5aa80c987b7aa98d2d9e4ec6f75850b929 Mon Sep 17 00:00:00 2001
From: Anders Svensson <anders@erlang.org>
Date: Thu, 23 Aug 2012 12:47:41 +0200
Subject: Add diameter_transport for transport start indirection

Module contains a transport start function that calls an a
specified function, and more.
---
 lib/diameter/src/modules.mk                       |  1 +
 lib/diameter/src/transport/diameter_transport.erl | 55 +++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 lib/diameter/src/transport/diameter_transport.erl

(limited to 'lib')

diff --git a/lib/diameter/src/modules.mk b/lib/diameter/src/modules.mk
index 7a700a6d53..5d3c4157ae 100644
--- a/lib/diameter/src/modules.mk
+++ b/lib/diameter/src/modules.mk
@@ -58,6 +58,7 @@ RT_MODULES = \
 	transport/diameter_tcp_sup \
 	transport/diameter_sctp \
 	transport/diameter_sctp_sup \
+	transport/diameter_transport \
 	transport/diameter_transport_sup
 
 # Handwritten (compile time) modules not included in the app file.
diff --git a/lib/diameter/src/transport/diameter_transport.erl b/lib/diameter/src/transport/diameter_transport.erl
new file mode 100644
index 0000000000..ff4b6bbc6d
--- /dev/null
+++ b/lib/diameter/src/transport/diameter_transport.erl
@@ -0,0 +1,55 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2012. 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%
+%%
+
+-module(diameter_transport).
+
+%%
+%% This module implements a transport start function that
+%% evaluates its config argument.
+%%
+
+%% Transport start functions
+-export([start/3,
+         select/3,
+         eval/3]).
+
+%% start/3
+
+%% Call a start function in this module ...
+start(T, Svc, {F,A}) ->
+    start(T, Svc, {?MODULE, F, [A]});
+
+%% ... or some other.
+start(T, Svc, F) ->
+    diameter_lib:eval([F, T, Svc]).
+
+%% select/3
+%%
+%% A start function that whose config argument is expected to return a
+%% new start function.
+
+select(T, Svc, F) ->
+    start(T, Svc, diameter_lib:eval([F, T, Svc])).
+
+%% eval/3
+%%
+%% A start function that simply evaluates its config argument.
+
+eval(_, _, F) ->
+    diameter_lib:eval(F).
-- 
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