GitHub/cc-scada
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

#7 initial PLC session supervisor code

Browse Source
This commit is contained in:
Mikayla Fischler
2022-04-23 12:12:33 -04:00
parent 3285f829f6
commit 852161317d
4 changed files with 258 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
supervisor/session/svsessions.lua
View File

@@ -10,6 +10,7 @@ SESSION_TYPE = {
}
local self = {
modem = nil
num_reactors = 0,
rtu_sessions = {},
plc_sessions = {},
@@ -19,6 +20,10 @@ local self = {
next_coord_id = 0
}
function link_modem(modem)
self.modem = modem
end
function alloc_reactor_plcs(num_reactors)
self.num_reactors = num_reactors
for i = 1, num_reactors do
@@ -64,12 +69,13 @@ function get_reactor_session(reactor)
return session
end
function establish_plc_session(remote_port, for_reactor)
function establish_plc_session(local_port, remote_port, for_reactor)
if get_reactor_session(for_reactor) == nil then
local plc_s = {
open = true,
reactor = for_reactor,
r_host = remote_port,
l_port = local_port,
r_port = remote_port,
in_queue = mqueue.new(),
out_queue = mqueue.new(),
instance = nil
@@ -87,12 +93,46 @@ function establish_plc_session(remote_port, for_reactor)
end
end
local function _check_watchdogs(sessions, timer_event)
for i = 1, #sessions do
local session = sessions[i]
if session.open then
local triggered = session.instance.check_wd(timer_event)
if triggered then
log._debug("watchdog closing session " .. session.instance.get_id() .. " on remote port " .. session.r_port)
session.open = false
session.instance.close()
end
end
end
end
function check_all_watchdogs(timer_event)
-- check RTU session watchdogs
_check_watchdogs(self.rtu_sessions, timer_event)
-- check PLC session watchdogs
_check_watchdogs(self.plc_sessions, timer_event)
-- check coordinator session watchdogs
_check_watchdogs(self.coord_sessions, timer_event)
end
local function _iterate(sessions)
for i = 1, #sessions do
local session = sessions[i]
if session.open then
local ok = session.instance.iterate()
if not ok then
if ok then
-- send packets in out queue
-- @todo handle commands if that's being used too
while not session.out_queue.empty() do
local msg = session.out_queue.pop()
if msg.qtype == mqueue.TYPE.PACKET then
self.modem.transmit(self.r_port, self.l_port, msg.message.raw_sendable())
end
end
else
session.open = false
session.instance.close()
end
@@ -123,6 +163,7 @@ local function _free_closed(sessions)
end
move_to = move_to + 1
else
log._debug("free'ing closing session " .. session.instance.get_id() .. " on remote port " .. session.r_port)
sessions[i] = nil
end
end