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authorTodd Eisenberger <todd@teisen.be>2011-10-02 00:09:50 -0700
committerTodd Eisenberger <todd@teisen.be>2011-10-02 00:09:50 -0700
commitb7279678df346488c8a0454b7d5d372d2236ce65 (patch)
tree6ab006548292e7176a8f52b5db5a7fdefbd446ae /src
parented87f26db763432505072eb5a2875f30fc4061d1 (diff)
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Frumious hacks to make plugins less likely to kill a client
Diffstat (limited to 'src')
-rw-r--r--src/plugin.py29
1 files changed, 28 insertions, 1 deletions
diff --git a/src/plugin.py b/src/plugin.py
index d332ca01..a5aae1f6 100644
--- a/src/plugin.py
+++ b/src/plugin.py
@@ -1,5 +1,7 @@
import os
from configparser import ConfigParser
+import inspect
+import traceback
class PluginConfig(ConfigParser):
def __init__(self, filename):
@@ -21,7 +23,30 @@ class PluginConfig(ConfigParser):
except IOError:
return False
-class BasePlugin(object):
+class SafetyMetaclass(type):
+ # A hack
+ core = None
+
+ @staticmethod
+ def safe_func(f):
+ def helper(*args, **kwargs):
+ try:
+ return f(*args, **kwargs)
+ except:
+ if inspect.stack()[1][1] == inspect.getfile(f):
+ raise
+ elif SafetyMetaclass.core:
+ SafetyMetaclass.core.information(traceback.format_exc())
+ return None
+ return helper
+
+ def __new__(meta, name, bases, class_dict):
+ for k, v in class_dict.items():
+ if inspect.isfunction(v):
+ class_dict[k] = SafetyMetaclass.safe_func(v)
+ return type.__new__(meta, name, bases, class_dict)
+
+class BasePlugin(object, metaclass=SafetyMetaclass):
"""
Class that all plugins derive from. Any methods beginning with command_
are interpreted as a command and beginning with on_ are interpreted as
@@ -30,6 +55,8 @@ class BasePlugin(object):
def __init__(self, plugin_manager, core, plugins_conf_dir):
self.core = core
+ # More hack; luckily we'll never have more than one core object
+ SafetyMetaclass.core = core
self.plugin_manager = plugin_manager
conf = os.path.join(plugins_conf_dir, self.__module__+'.cfg')
self.config = PluginConfig(conf)