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authorRomain Forlot <romain.forlot@iot.bzh>2019-01-18 13:37:12 +0100
committerRomain Forlot <romain.forlot@iot.bzh>2019-01-24 11:46:41 +0100
commitc24fb79df547212f8958e2687c1e060168c35b6e (patch)
treef0cbf559cedc9273b1ecf8e92cd64e5ab2ac6060 /conf.d/controller/lua.d
parent727d5cc0e72837fdf1c2fb053ad5bee4d42f92a4 (diff)
Handle event in core binding
Prefers to handle the events reception by the binding, in C, rather than using the LUA interpreter to avoid race condition on the LUA context. Because we are waiting events in LUA context using binder call sync, when the event is received then 2 threads operate simultaneously on LUA context, the waiting event thread and the receiving event thread. Bug-AGL: SPEC-2135 Change-Id: Ied0a78a61263b8fd41305969c636a491c6bb0295 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'conf.d/controller/lua.d')
-rw-r--r--conf.d/controller/lua.d/aft.lua88
1 files changed, 37 insertions, 51 deletions
diff --git a/conf.d/controller/lua.d/aft.lua b/conf.d/controller/lua.d/aft.lua
index 971f8be..da51a18 100644
--- a/conf.d/controller/lua.d/aft.lua
+++ b/conf.d/controller/lua.d/aft.lua
@@ -135,55 +135,25 @@ function _AFT.triggerEvtCallback(eventName)
end
end
-function _AFT.bindingEventHandler(eventObj, uid)
- local eventName = nil
- local eventListeners = nil
- local data = nil
-
- if uid then
- eventName = uid
- data = eventObj
- elseif eventObj.event.name then
- eventName = eventObj.event.name
- eventListeners = eventObj.data.result
- -- Remove from event to hold the bare event data and be able to assert it
- eventObj.data.result = nil
- data = eventObj.data.data
- end
-
- if type(_AFT.monitored_events[eventName]) == 'table' then
- local stopSync = true
- if eventListeners then
- _AFT.monitored_events[eventName].eventListeners = eventListeners
+function _AFT.bindingEventHandler(eventObj)
+ local eventName = eventObj.event.name
+ if eventObj.data.result then
+ _AFT.monitored_events[eventName].eventListeners = eventObj.data.result
+ end
+
+ _AFT.incrementCount(_AFT.monitored_events[eventName])
+ _AFT.registerData(_AFT.monitored_events[eventName],
+ eventObj.data.data)
+
+ for name,value in pairs(_AFT.monitored_events) do
+ if (_AFT.monitored_events[name].expected and
+ _AFT.monitored_events[name].receivedCount < _AFT.monitored_events[name].expected
+ )
+ then
+ return true
end
-
- _AFT.incrementCount(_AFT.monitored_events[eventName])
- _AFT.registerData(_AFT.monitored_events[eventName], data)
-
- for name,value in pairs(_AFT.monitored_events) do
- if (_AFT.monitored_events[name].expected and
- _AFT.monitored_events[name].receivedCount < _AFT.monitored_events[name].expected)
- then
- stopSync = false
- end
- end
-
- if stopSync == true and _AFT.waiting == true then
- AFB:servsync(_AFT.context, _AFT.apiname, "sync", { stop = 1 })
- _AFT.waiting = false
- end
- end
-end
-
-function _evt_catcher_(source, action, eventObj)
- local uid = AFB:getuid(source)
- if uid == "monitor/trace" then
- if eventObj.type == "event" then
- _AFT.bindingEventHandler(eventObj)
- end
- --else
- -- _AFT.bindingEventHandler(eventObj, uid)
end
+ return false
end
function _AFT.lockWait(eventName, timeout)
@@ -192,12 +162,18 @@ function _AFT.lockWait(eventName, timeout)
return 0
end
- _AFT.waiting = true
local err,responseJ = AFB:servsync(_AFT.context, _AFT.apiname, "sync", { start = timeout})
- if err then
+ if err or (not responseJ and not responseJ.response.event.name) then
return 0
end
+
+ _AFT.bindingEventHandler(responseJ.response)
+
+ if AFB:servsync(_AFT.context, _AFT.apiname, "sync", {stop = true}) then
+ return 0
+ end
+
return 1
end
@@ -212,10 +188,20 @@ function _AFT.lockWaitGroup(eventGroup, timeout)
_AFT.monitored_events[event].expected = expectedCount + _AFT.monitored_events[event].receivedCount
end
- _AFT.waiting = true
+ local waiting = true
local err, responseJ = AFB:servsync(_AFT.context, _AFT.apiname, "sync", { start = timeout })
+ while waiting do
+ if err or (not responseJ and not responseJ.response.event.name) then
+ return 0
+ end
+
+ waiting = _AFT.bindingEventHandler(responseJ.response)
- if err then
+ if waiting == true then
+ err, responseJ = AFB:servsync(_AFT.context, _AFT.apiname, "sync", {continue = true})
+ end
+ end
+ if AFB:servsync(_AFT.context, _AFT.apiname, "sync", {stop = true}) then
return 0
end