fixeria has uploaded this change for review.

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sctp_proxy: add fetch_info/1 for state introspection

This API will be used by the upcoming interactive VTY interface.

Change-Id: Ifd495c3b5e6f036fca1fbb2a06330f06ddfbbe61
---
M src/sctp_proxy.erl
1 file changed, 14 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/erlang/osmo-s1gw refs/changes/93/38793/1

diff --git a/src/sctp_proxy.erl b/src/sctp_proxy.erl
index b23451f..755d2a3 100644
--- a/src/sctp_proxy.erl
+++ b/src/sctp_proxy.erl
@@ -45,6 +45,7 @@
 -export([start_link/2,
          start_link/3,
          send_data/2,
+         fetch_info/1,
          shutdown/1]).
 
 -include_lib("kernel/include/logger.hrl").
@@ -79,6 +80,11 @@
     gen_statem:cast(Pid, {send_data, Data}).
 
 
+-spec fetch_info(pid()) -> proplists:proplist().
+fetch_info(Pid) ->
+    gen_statem:call(Pid, ?FUNCTION_NAME).
+
+
 -spec shutdown(pid()) -> ok.
 shutdown(Pid) ->
     gen_statem:stop(Pid).
@@ -202,6 +208,14 @@
 
 
 %% Event handler for all states
+handle_event(State, {call, From}, fetch_info,
+             #{handler := Pid} = S0) ->
+    ERABs = s1ap_proxy:fetch_erab_list(Pid),
+    S1 = maps:with([enb_aid, mme_aid, mme_addr, mme_port], S0),
+    S2 = S1#{state => State, erab_list => ERABs},
+    Reply = proplists:from_map(S2),
+    {keep_state_and_data, {reply, From, Reply}};
+
 handle_event(State, Event, EventData, _S) ->
     ?LOG_ERROR("Unexpected event ~p in state ~p: ~p", [Event, State, EventData]),
     {keep_state_and_data}.

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