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Diffstat (limited to 'pyload/manager/Addon.py')
| -rw-r--r-- | pyload/manager/Addon.py | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/pyload/manager/Addon.py b/pyload/manager/Addon.py new file mode 100644 index 000000000..2a3bc4318 --- /dev/null +++ b/pyload/manager/Addon.py @@ -0,0 +1,303 @@ +# -*- coding: utf-8 -*- +# @author: RaNaN, mkaay +# @interface-version: 0.1 + +import __builtin__ + +import traceback +from threading import RLock, Thread + +from types import MethodType + +from pyload.manager.thread.Addon import AddonThread +from pyload.manager.Plugin import literal_eval +from pyload.utils import lock + + +class AddonManager(object): + """Manages addons, delegates and handles Events. + + Every plugin can define events, \ + but some very usefull events are called by the Core. + Contrary to overwriting addon methods you can use event listener, + which provides additional entry point in the control flow. + Only do very short tasks or use threads. + + **Known Events:** + Most addon methods exists as events. These are the additional known events. + + ======================= ============== ================================== + Name Arguments Description + ======================= ============== ================================== + download-preparing fid A download was just queued and will be prepared now. + download-start fid A plugin will immediately starts the download afterwards. + links-added links, pid Someone just added links, you are able to modify the links. + all_downloads-processed Every link was handled, pyload would idle afterwards. + all_downloads-finished Every download in queue is finished. + config-changed The config was changed via the api. + pluginConfigChanged The plugin config changed, due to api or internal process. + ======================= ============== ================================== + + | Notes: + | all_downloads-processed is *always* called before all_downloads-finished. + | config-changed is *always* called before pluginConfigChanged. + """ + + def __init__(self, core): + self.core = core + + __builtin__.addonManager = self #: needed to let addons register themself + + self.plugins = [] + self.pluginMap = {} + self.methods = {} #: dict of names and list of methods usable by rpc + + self.events = {} #: contains events + + # registering callback for config event + self.core.config.pluginCB = MethodType(self.dispatchEvent, "pluginConfigChanged", basestring) #@TODO: Rename event pluginConfigChanged + + self.addEvent("pluginConfigChanged", self.manageAddon) + + self.lock = RLock() + self.createIndex() + + + def try_catch(func): + + + def new(*args): + try: + return func(*args) + except Exception, e: + args[0].core.log.error(_("Error executing addon: %s") % e) + if args[0].core.debug: + traceback.print_exc() + + return new + + + def addRPC(self, plugin, func, doc): + plugin = plugin.rpartition(".")[2] + doc = doc.strip() if doc else "" + + if plugin in self.methods: + self.methods[plugin][func] = doc + else: + self.methods[plugin] = {func: doc} + + + def callRPC(self, plugin, func, args, parse): + if not args: + args = () + if parse: + args = tuple([literal_eval(x) for x in args]) + plugin = self.pluginMap[plugin] + f = getattr(plugin, func) + return f(*args) + + + def createIndex(self): + plugins = [] + + for type in ("addon", "hook"): + active = [] + deactive = [] + for pluginname in getattr(self.core.pluginManager, "%sPlugins" % type): + try: + if self.core.config.getPlugin("%s_%s" % (pluginname, type), "activated"): + pluginClass = self.core.pluginManager.loadClass(type, pluginname) + if not pluginClass: + continue + + plugin = pluginClass(self.core, self) + plugins.append(plugin) + self.pluginMap[pluginClass.__name__] = plugin + if plugin.isActivated(): + active.append(pluginClass.__name__) + else: + deactive.append(pluginname) + + except Exception: + self.core.log.warning(_("Failed activating %(name)s") % {"name": pluginname}) + if self.core.debug: + traceback.print_exc() + + self.core.log.info(_("Activated %ss: %s") % (type, ", ".join(sorted(active)))) + self.core.log.info(_("Deactivated %ss: %s") % (type, ", ".join(sorted(deactive)))) + + self.plugins = plugins + + + def manageAddon(self, plugin, name, value): + if name == "activated" and value: + self.activateAddon(plugin) + + elif name == "activated" and not value: + self.deactivateAddon(plugin) + + + def activateAddon(self, pluginname): + # check if already loaded + for inst in self.plugins: + if inst.__class__.__name__ == pluginname: + return + + pluginClass = self.core.pluginManager.loadClass("addon", pluginname) + + if not pluginClass: + return + + self.core.log.debug("Activate addon: %s" % pluginname) + + addon = pluginClass(self.core, self) + self.plugins.append(addon) + self.pluginMap[pluginClass.__name__] = addon + + addon.activate() + + + def deactivateAddon(self, pluginname): + for plugin in self.plugins: + if plugin.__class__.__name__ == pluginname: + addon = plugin + break + else: + return + + self.core.log.debug("Deactivate addon: %s" % pluginname) + + addon.deactivate() + + # remove periodic call + self.core.log.debug("Removed callback: %s" % self.core.scheduler.removeJob(addon.cb)) + + self.plugins.remove(addon) + del self.pluginMap[addon.__class__.__name__] + + + @try_catch + def coreReady(self): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.activate() + + self.dispatchEvent("addon-start") + + + @try_catch + def coreExiting(self): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.exit() + + self.dispatchEvent("addon-exit") + + + @lock + def downloadPreparing(self, pyfile): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.downloadPreparing(pyfile) + + self.dispatchEvent("download-preparing", pyfile) + + + @lock + def downloadFinished(self, pyfile): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.downloadFinished(pyfile) + + self.dispatchEvent("download-finished", pyfile) + + + @lock + @try_catch + def downloadFailed(self, pyfile): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.downloadFailed(pyfile) + + self.dispatchEvent("download-failed", pyfile) + + + @lock + def packageFinished(self, package): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.packageFinished(package) + + self.dispatchEvent("package-finished", package) + + + @lock + def beforeReconnecting(self, ip): + for plugin in self.plugins: + plugin.beforeReconnecting(ip) + + self.dispatchEvent("beforeReconnecting", ip) + + + @lock + def afterReconnecting(self, ip): + for plugin in self.plugins: + if plugin.isActivated(): + plugin.afterReconnecting(ip) + + self.dispatchEvent("afterReconnecting", ip) + + + def startThread(self, function, *args, **kwargs): + return AddonThread(self.core.threadManager, function, args, kwargs) + + + def activePlugins(self): + """ returns all active plugins """ + return [x for x in self.plugins if x.isActivated()] + + + def getAllInfo(self): + """returns info stored by addon plugins""" + info = {} + for name, plugin in self.pluginMap.iteritems(): + if plugin.info: + # copy and convert so str + info[name] = dict( + [(x, str(y) if not isinstance(y, basestring) else y) for x, y in plugin.info.iteritems()]) + return info + + + def getInfo(self, plugin): + info = {} + if plugin in self.pluginMap and self.pluginMap[plugin].info: + info = dict((x, str(y) if not isinstance(y, basestring) else y) + for x, y in self.pluginMap[plugin].info.iteritems()) + return info + + + def addEvent(self, event, func): + """Adds an event listener for event name""" + if event in self.events: + self.events[event].append(func) + else: + self.events[event] = [func] + + + def removeEvent(self, event, func): + """removes previously added event listener""" + if event in self.events: + self.events[event].remove(func) + + + def dispatchEvent(self, event, *args): + """dispatches event with args""" + if event in self.events: + for f in self.events[event]: + try: + f(*args) + except Exception, e: + self.core.log.warning("Error calling event handler %s: %s, %s, %s" + % (event, f, args, str(e))) + if self.core.debug: + traceback.print_exc() |