# Erebus IRC bot - Author: John Runyon
# module loading/unloading/tracking code
-import sys
+from __future__ import print_function
+
+import sys, time, importlib
import modlib
+if sys.version_info.major >= 3:
+ from importlib import reload
+else:
+ importlib.invalidate_caches = lambda: None
+
modules = {}
dependents = {}
+#dependents[modname] = [list of modules which depend on modname]
def isloaded(modname): return modname in modules
def modhas(modname, attname): return getattr(modules[modname], attname, None) is not None
-def load(parent, modname):
+def load(parent, modname, dependent=False):
+ """Wrapper to call _load and print the return value."""
+ if dependent:
+ print("(Loading dependency %s..." % (modname), end=' ')
+ else:
+ print("%09.3f [MOD] [?] Loading %s..." % (time.time() % 100000, modname), end=' ')
+ modstatus = _load(parent, modname, dependent)
+ if not modstatus:
+ if dependent:
+ print("failed: %s)" % (modstatus), end=' ')
+ else:
+ print("failed: %s." % (modstatus))
+ elif modstatus == True:
+ if dependent:
+ print("OK)", end=' ')
+ else:
+ print("OK.")
+ else:
+ if dependent:
+ print("OK: %s)" % (modstatus), end=' ')
+ else:
+ print("OK: %s." % (modstatus))
+ return modstatus
+
+def _load(parent, modname, dependent=False):
+ """Load and return the new status of the module."""
+ successstatus = []
if not isloaded(modname):
- mod = __import__(modname)
- reload(mod)
+ importlib.invalidate_caches()
+ try:
+ mod = importlib.import_module('modules.'+modname)
+ reload(mod) #in case it's been previously loaded.
+ except Exception as e:
+ return modlib.error(e)
- if 1 not in mod.modinfo['compatible']:
+
+ if not hasattr(mod, 'modinfo'):
+ return modlib.error('no modinfo')
+
+ if parent.APIVERSION not in mod.modinfo['compatible']:
return modlib.error('API-incompatible')
modules[modname] = mod
dependents[modname] = []
for dep in mod.modinfo['depends']:
- if dep not in modules:
- depret = load(parent, dep)
- if not depret:
- return
+ if bool(int(parent.cfg.get('autoloads', dep, default=1))):
+ if dep not in modules:
+ depret = load(parent, dep, dependent=True)
+ if depret is not None and not depret:
+ return depret
+ else:
+ return modlib.error("dependent %s disabled" % (dep))
dependents[dep].append(modname)
+ for dep in mod.modinfo['softdeps']:
+ if bool(int(parent.cfg.get('autoloads', dep, default=1))):
+ if dep not in modules:
+ depret = load(parent, dep, dependent=True)
+ if depret is not None:
+ if not depret:
+ successstatus.append("softdep %s failed" % (dep))
+ else:
+ successstatus.append("softdep %s disabled" % (dep))
+ #swallow errors loading - softdeps are preferred, not required
+
ret = mod.modstart(parent)
- if ret is not None and not ret:
+ if ret is None:
+ ret = True
+ if not ret:
del modules[modname]
del dependents[modname]
for dep in mod.modinfo['depends']:
dependents[dep].remove(modname)
- return ret
+
+ successstatus = ';'.join(successstatus)
+ if len(successstatus) > 0 and ret:
+ if ret == True:
+ return successstatus
+ else:
+ return "%s (%s)" % (ret, successstatus)
+ else:
+ return ret
else: #if not isloaded...else:
return modlib.error('already loaded')
if isloaded(modname):
for dependent in dependents[modname]:
unload(parent, dependent)
- for dep in dependents[modname]:
+ for dep in modules[modname].modinfo['depends']:
dependents[dep].remove(modname)
- return modules[modname].modstop(parent)
+ ret = modules[modname].modstop(parent)
+ del modules[modname]
+ return ret
else:
return modlib.error('already unloaded')
if modhas(modname, 'modrestart'): modules[modname].modrestart(parent)
else: modules[modname].modstop(parent)
- reload(modules[modname])
+ try:
+ reload(modules[modname])
+ except BaseException as e:
+ return modlib.error(e)
- if modhas(modname, 'modrestarted'): modules[modname].modrestarted(parent)
- else: modules[modname].modstart(parent)
+ if modhas(modname, 'modrestarted'): ret = modules[modname].modrestarted(parent)
+ else: ret = modules[modname].modstart(parent)
+ return ret
else:
- load(parent, modname)
+ return load(parent, modname)
+
def loadall(parent, modlist):
for m in modlist: load(parent, m)
for m in modlist: unload(parent, m)
def reloadall(parent, modlist):
for m in modlist: reloadmod(parent, m)
-
-sys.path.append('modules')