/ADNS.py
http://adns-python.googlecode.com/ · Python · 71 lines · 52 code · 17 blank · 2 comment · 13 complexity · 9eed263002f3ac725128dbfb7c690f79 MD5 · raw file
- #!/usr/bin/python
- """High-level interface to adns."""
- import adns
- from exceptions import Exception
- class Error(Exception): pass
- class QueryEngine:
- callback_submit = None
- callback_submit_reverse = None
- callback_submit_reverse_any = None
-
- def __init__(self, s=None):
- self._s = s or adns.init(adns.iflags.noautosys)
- self._queries = {}
- def synchronous(self, qname, rr, flags=0):
- return self._s.synchronous(qname, rr, flags)
- def submit(self, qname, rr, flags=0, callback=None, extra=None):
- callback = callback or self.callback_submit
- if not callback: raise Error, "callback required"
- q = self._s.submit(qname, rr, flags)
- self._queries[q] = qname, rr, flags, callback, extra
- def submit_reverse(self, qname, rr, flags=0, callback=None, extra=None):
- callback = callback or self.callback_submit_reverse
- if not callback: raise Error, "callback required"
- q = self._s.submit_reverse(qname, rr, flags)
- self._queries[q] = qname, rr, flags, callback, extra
- def submit_reverse_any(self, qname, rr, flags=0,
- callback=None, extra=None):
- callback = callback or self.callback_submit_reverse_any
- if not callback: raise Error, "callback required"
- q = self._s.submit_reverse_any(qname, rr, flags)
- self._queries[q] = qname, rr, flags, callback, extra
- def cancel(self, query):
- query.cancel()
- try: del self._queries[query]
- except KeyError: pass
-
- def run(self, timeout=0):
- for q in self._s.completed(timeout):
- answer = q.check()
- qname, rr, flags, callback, extra = self._queries[q]
- del self._queries[q]
- apply(callback, (answer, qname, rr, flags, extra))
- def finished(self):
- return not len(self._queries)
- def finish(self):
- while not self.finished():
- self.run(1)
- def run_max(self, max):
- from time import time
- quittime = time()+max
- while not self.finished() and time()<=quittime:
- self.run(1)
- def globalsystemfailure(self):
- self._s.globalsystemfailure()
- self._queries.clear()
- init = QueryEngine