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Add. EventConsumer class. (#1741)

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Rewrite MWI and CallFlow subscribe handlers based on EventConsumer class.
Also on my test VirtualBox/Debian system Lua function `os.clock` produce
very strange result(delta ~0.015 for 1 second) so I switch to `os.time`.
Now to to stop this background Lua scripts it possible send CUSTOM event
with subclass `fusion::XXX::shutdown`. Where XXX is `mwi` or `flow`.

Usage of EventConsumer class
```Lua
-- create new object with timeout one minute
local events = EventConsumer.new(60000)

-- bind to some FS event
events:bind("SHUTDOW", function(self, name, event) ... end)

-- bind to another FS event with subclass
events:bind("CUSTOM::fusion::mwi::shutdown", function(self, name, event) ... end)

-- handle timeout event
events:on("TIMEOUT", function(self, name) ... end)

--run event loop
events:run()
```
This commit is contained in:
Alexey Melnichuk
2016-07-08 22:10:43 +03:00
committed by FusionPBX
parent 666ccddb34
commit cae644c8a1
5 changed files with 588 additions and 131 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
resources/install/scripts/call_flow_subscribe.lua
View File

@@ -2,19 +2,18 @@ require "resources.functions.config"
require "resources.functions.split"
local log = require "resources.functions.log".call_flow_subscribe
local file = require "resources.functions.file"
local EventConsumer = require "resources.functions.event_consumer"
local presence_in = require "resources.functions.presence_in"
local Database = require "resources.functions.database"
local ievents = require "resources.functions.ievents"
local IntervalTimer = require "resources.functions.interval_timer"
local api = require "resources.functions.api"
local find_call_flow do
local find_call_flow_sql = [[select t1.call_flow_uuid, t1.call_flow_status
from v_call_flows t1 inner join v_domains t2 on t1.domain_uuid = t2.domain_uuid
where t2.domain_name = '%s' and t1.call_flow_feature_code = '%s'
]]
local function find_call_flow(user)
function find_call_flow(user)
local ext, domain_name = split_first(user, '@', true)
if not domain_name then return end
local dbh = Database.new('system')
@@ -26,55 +25,50 @@ local function find_call_flow(user)
return row.call_flow_uuid, row.call_flow_status
end
end
local sleep = 60000
local pid_file = scripts_dir .. "/run/call_flow_subscribe.tmp"
local shutdown_event = "CUSTOM::fusion::flow::shutdown"
local pid = api:execute("create_uuid") or tostring(api:getTime())
local events = EventConsumer.new(sleep, pid_file)
file.write(pid_file, pid)
-- FS shutdown
events:bind("SHUTDOWN", function(self, name, event)
log.notice("shutdown")
return self:stop()
end)
log.notice("start");
-- shutdown command
if shutdown_event then
events:bind(shutdown_event, function(self, name, event)
log.notice("shutdown")
return self:stop()
end)
end
local timer = IntervalTimer.new(sleep):start()
-- FS receive SUBSCRIBE to BLF from device
events:bind("PRESENCE_PROBE", function(self, name, event)
--handle only blf with `flow+` prefix
if event:getHeader('proto') ~= 'flow' then return end
for event in ievents({"PRESENCE_PROBE", "SHUTDOWN"}, 1, timer:rest()) do
if (not event) or (timer:rest() < 1000) then
if not file.exists(pid_file) then break end
local stored = file.read(pid_file)
if stored and stored ~= pid then break end
timer:restart()
end
if event then
-- log.notice("event:" .. event:serialize("xml"));
local event_name = event:getHeader('Event-Name')
if event_name == 'PRESENCE_PROBE' then
if event:getHeader('proto') == 'flow' and
event:getHeader('Event-Calling-Function') == 'sofia_presence_handle_sip_i_subscribe'
then
local from, to = event:getHeader('from'), event:getHeader('to')
local expires = tonumber(event:getHeader('expires'))
if expires and expires > 0 then
local call_flow_uuid, call_flow_status = find_call_flow(to)
if call_flow_uuid then
log.debugf("Find call flow: %s", to)
presence_in.turn_lamp(call_flow_status == "false", to, call_flow_uuid);
else
log.warningf("Can not find call flow: %s", to)
end
else
log.noticef("%s UNSUBSCRIBE from %s", from, to)
end
end
elseif event_name == 'SHUTDOWN' then
log.notice("shutdown")
break
local from, to = event:getHeader('from'), event:getHeader('to')
local expires = tonumber(event:getHeader('expires'))
if expires and expires > 0 then
local call_flow_uuid, call_flow_status = find_call_flow(to)
if call_flow_uuid then
log.noticef("Find call flow: %s staus: %s", to, tostring(call_flow_status))
presence_in.turn_lamp(call_flow_status == "false", to, call_flow_uuid)
else
log.warningf("Can not find call flow: %s", to)
end
else
log.noticef("%s UNSUBSCRIBE from %s", from, to)
end
end
end)
if file.read(pid_file) == pid then
file.remove(pid_file)
end
log.notice("start")
events:run()
log.notice("stop")