blob: 1493c7314acafac4608f3e7c1a6547d8e2417a53 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
module Hsbot.Plugin
( killPlugin
, spawnPlugins
, spawnPlugin
, unloadPlugin
) where
import Control.Concurrent (forkIO)
import Control.Concurrent.Chan
import Control.Concurrent.MVar
import Control.Exception
import Control.Monad.State
import qualified Data.Map as M
import Data.Maybe (fromMaybe)
import Prelude hiding (catch)
import Hsbot.Config
import Hsbot.Irc.Config
import Hsbot.Irc.Core
import Hsbot.Types
-- | spawns plugins
spawnPlugins :: Bot ()
spawnPlugins = do
config <- gets botConfig
mapM_ (spawnPlugin) config
-- | spawns a single plugin
spawnPlugin :: BotConfig -> Bot ()
spawnPlugin (IrcBotConfig ircConfig) = do
bot <- get
let mvar = botResumeData bot
name = ircConfigName ircConfig
resumeData <- liftIO $ takeMVar mvar
let pluginResumeData = fromMaybe M.empty $ M.lookup name resumeData
chan = botChan bot
pchan <- liftIO (newChan :: IO (Chan BotMsg))
pluginMVar <- liftIO newEmptyMVar
threadId <- liftIO . forkIO $ finally (startIrcbot ircConfig chan pchan (Just $ show pluginResumeData)) (putMVar pluginMVar ())
let plugin = PluginState { pluginName = name
, pluginChan = pchan
, pluginHandles = M.empty }
plugins = botPlugins bot
put $ bot { botPlugins = M.insert (pluginName plugin) (plugin, pluginMVar, threadId) plugins }
liftIO . putMVar mvar $ M.insert name pluginResumeData resumeData
-- | Unloads a plugin
unloadPlugin :: String -> Bot ()
unloadPlugin name = do
killPlugin name
resumeData <- gets botResumeData
liftIO $ modifyMVar_ resumeData (\oldData -> return $ M.delete name oldData)
-- | kills a plugin
killPlugin :: String -> Bot ()
killPlugin name = do
bot <- get
let oldPlugins = botPlugins bot
-- We check if the plugin exists
case M.lookup name oldPlugins of
Just (_, mvar, threadId) -> do
let newPlugins = M.delete name oldPlugins
liftIO $ throwTo threadId UserInterrupt
put $ bot { botPlugins = newPlugins }
liftIO $ takeMVar mvar
Nothing -> return ()
|
