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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 1094a3fe92
commit a52e9c3626
5 changed files with 588 additions and 131 deletions
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109
resources/install/scripts/app/voicemail/resources/scripts/mwi_subscribe.lua
View File

@@ -2,33 +2,36 @@ require "resources.functions.config"
require "resources.functions.split"
local log = require "resources.functions.log".mwi_subscribe
local file = require "resources.functions.file"
local EventConsumer = require "resources.functions.event_consumer"
local Database = require "resources.functions.database"
local ievents = require "resources.functions.ievents"
local IntervalTimer = require "resources.functions.interval_timer"
local cache = require "resources.functions.cache"
local api = require "resources.functions.api"
local mwi_notify = require "app.voicemail.resources.functions.mwi_notify"
local sleep = 60000
local pid_file = scripts_dir .. "/run/mwi_subscribe.tmp"
local shutdown_event = "CUSTOM::fusion::mwi::shutdown"
local vm_message_count do
local vm_to_uuid_sql = [[SELECT v.voicemail_uuid
FROM v_voicemails as v inner join v_domains as d on v.domain_uuid = d.domain_uuid
WHERE v.voicemail_id = '%s' and d.domain_name = '%s']]
local vm_messages_sql = [[SELECT
( SELECT count(*)
FROM v_voicemail_messages
WHERE voicemail_uuid = %s
AND (message_status is null or message_status = '')
FROM v_voicemail_messages
WHERE voicemail_uuid = %s
AND (message_status is null or message_status = '')
) as new_messages,
( SELECT count(*)
FROM v_voicemail_messages
WHERE voicemail_uuid = %s
AND message_status = 'saved'
FROM v_voicemail_messages
WHERE voicemail_uuid = %s
AND message_status = 'saved'
) as saved_messages
]]
local function vm_message_count(account, use_cache)
function vm_message_count(account, use_cache)
local id, domain_name = split_first(account, '@', true)
if not domain_name then return end
@@ -80,52 +83,48 @@ local function vm_message_count(account, use_cache)
return row.new_messages, row.saved_messages
end
local sleep = 60000
local pid_file = scripts_dir .. "/run/mwi_subscribe.tmp"
local pid = api:execute("create_uuid") or tostring(api:getTime())
file.write(pid_file, pid)
log.notice("start");
local timer = IntervalTimer.new(sleep):start()
for event in ievents({"MESSAGE_QUERY", "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 == 'MESSAGE_QUERY' then
local account_header = event:getHeader('Message-Account')
if account_header then
local proto, account = split_first(account_header, ':', true)
if (not account) or (proto ~= 'sip' and proto ~= 'sips') then
log.warningf("invalid format for voicemail id: %s", account_header)
else
local new_messages, saved_messages = vm_message_count(account)
if not new_messages then
log.warningf('can not find voicemail: %s', account)
else
log.noticef('voicemail %s has %s/%s messages', account, new_messages, saved_messages)
mwi_notify(account, new_messages, saved_messages)
end
end
end
elseif event_name == 'SHUTDOWN' then
log.notice("shutdown")
break
end
end
end
if file.read(pid_file) == pid then
file.remove(pid_file)
local events = EventConsumer.new(sleep, pid_file)
-- FS shutdown
events:bind("SHUTDOWN", function(self, name, event)
log.notice("shutdown")
return self:stop()
end)
-- shutdown command
if shutdown_event then
events:bind(shutdown_event, function(self, name, event)
log.notice("shutdown")
return self:stop()
end)
end
-- MWI SUBSCRIBE
events:bind("MESSAGE_QUERY", function(self, name, event)
local account_header = event:getHeader('Message-Account')
if not account_header then
return log.warningf("MWI message without `Message-Account` header")
end
local proto, account = split_first(account_header, ':', true)
if (not account) or (proto ~= 'sip' and proto ~= 'sips') then
return log.warningf("invalid format for voicemail id: %s", account_header)
end
local new_messages, saved_messages = vm_message_count(account)
if not new_messages then
return log.warningf('can not find voicemail: %s', account)
end
log.noticef('voicemail %s has %s/%s message(s)', account, new_messages, saved_messages)
mwi_notify(account, new_messages, saved_messages)
end)
log.notice("start")
events:run()
log.notice("stop")