|
|
"""some generic utilities for dealing with classes, urls, and serialization
|
|
|
|
|
|
Authors:
|
|
|
|
|
|
* Min RK
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (C) 2010-2011 The IPython Development Team
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License. The full license is in
|
|
|
# the file COPYING, distributed as part of this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# Standard library imports.
|
|
|
import logging
|
|
|
import os
|
|
|
import re
|
|
|
import stat
|
|
|
import socket
|
|
|
import sys
|
|
|
from signal import signal, SIGINT, SIGABRT, SIGTERM
|
|
|
try:
|
|
|
from signal import SIGKILL
|
|
|
except ImportError:
|
|
|
SIGKILL=None
|
|
|
|
|
|
try:
|
|
|
import cPickle
|
|
|
pickle = cPickle
|
|
|
except:
|
|
|
cPickle = None
|
|
|
import pickle
|
|
|
|
|
|
# System library imports
|
|
|
import zmq
|
|
|
from zmq.log import handlers
|
|
|
|
|
|
from IPython.external.decorator import decorator
|
|
|
|
|
|
# IPython imports
|
|
|
from IPython.config.application import Application
|
|
|
from IPython.utils.localinterfaces import LOCALHOST, PUBLIC_IPS
|
|
|
from IPython.kernel.zmq.log import EnginePUBHandler
|
|
|
from IPython.kernel.zmq.serialize import (
|
|
|
unserialize_object, serialize_object, pack_apply_message, unpack_apply_message
|
|
|
)
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class Namespace(dict):
|
|
|
"""Subclass of dict for attribute access to keys."""
|
|
|
|
|
|
def __getattr__(self, key):
|
|
|
"""getattr aliased to getitem"""
|
|
|
if key in self.iterkeys():
|
|
|
return self[key]
|
|
|
else:
|
|
|
raise NameError(key)
|
|
|
|
|
|
def __setattr__(self, key, value):
|
|
|
"""setattr aliased to setitem, with strict"""
|
|
|
if hasattr(dict, key):
|
|
|
raise KeyError("Cannot override dict keys %r"%key)
|
|
|
self[key] = value
|
|
|
|
|
|
|
|
|
class ReverseDict(dict):
|
|
|
"""simple double-keyed subset of dict methods."""
|
|
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
|
dict.__init__(self, *args, **kwargs)
|
|
|
self._reverse = dict()
|
|
|
for key, value in self.iteritems():
|
|
|
self._reverse[value] = key
|
|
|
|
|
|
def __getitem__(self, key):
|
|
|
try:
|
|
|
return dict.__getitem__(self, key)
|
|
|
except KeyError:
|
|
|
return self._reverse[key]
|
|
|
|
|
|
def __setitem__(self, key, value):
|
|
|
if key in self._reverse:
|
|
|
raise KeyError("Can't have key %r on both sides!"%key)
|
|
|
dict.__setitem__(self, key, value)
|
|
|
self._reverse[value] = key
|
|
|
|
|
|
def pop(self, key):
|
|
|
value = dict.pop(self, key)
|
|
|
self._reverse.pop(value)
|
|
|
return value
|
|
|
|
|
|
def get(self, key, default=None):
|
|
|
try:
|
|
|
return self[key]
|
|
|
except KeyError:
|
|
|
return default
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Functions
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
@decorator
|
|
|
def log_errors(f, self, *args, **kwargs):
|
|
|
"""decorator to log unhandled exceptions raised in a method.
|
|
|
|
|
|
For use wrapping on_recv callbacks, so that exceptions
|
|
|
do not cause the stream to be closed.
|
|
|
"""
|
|
|
try:
|
|
|
return f(self, *args, **kwargs)
|
|
|
except Exception:
|
|
|
self.log.error("Uncaught exception in %r" % f, exc_info=True)
|
|
|
|
|
|
|
|
|
def is_url(url):
|
|
|
"""boolean check for whether a string is a zmq url"""
|
|
|
if '://' not in url:
|
|
|
return False
|
|
|
proto, addr = url.split('://', 1)
|
|
|
if proto.lower() not in ['tcp','pgm','epgm','ipc','inproc']:
|
|
|
return False
|
|
|
return True
|
|
|
|
|
|
def validate_url(url):
|
|
|
"""validate a url for zeromq"""
|
|
|
if not isinstance(url, basestring):
|
|
|
raise TypeError("url must be a string, not %r"%type(url))
|
|
|
url = url.lower()
|
|
|
|
|
|
proto_addr = url.split('://')
|
|
|
assert len(proto_addr) == 2, 'Invalid url: %r'%url
|
|
|
proto, addr = proto_addr
|
|
|
assert proto in ['tcp','pgm','epgm','ipc','inproc'], "Invalid protocol: %r"%proto
|
|
|
|
|
|
# domain pattern adapted from http://www.regexlib.com/REDetails.aspx?regexp_id=391
|
|
|
# author: Remi Sabourin
|
|
|
pat = re.compile(r'^([\w\d]([\w\d\-]{0,61}[\w\d])?\.)*[\w\d]([\w\d\-]{0,61}[\w\d])?$')
|
|
|
|
|
|
if proto == 'tcp':
|
|
|
lis = addr.split(':')
|
|
|
assert len(lis) == 2, 'Invalid url: %r'%url
|
|
|
addr,s_port = lis
|
|
|
try:
|
|
|
port = int(s_port)
|
|
|
except ValueError:
|
|
|
raise AssertionError("Invalid port %r in url: %r"%(port, url))
|
|
|
|
|
|
assert addr == '*' or pat.match(addr) is not None, 'Invalid url: %r'%url
|
|
|
|
|
|
else:
|
|
|
# only validate tcp urls currently
|
|
|
pass
|
|
|
|
|
|
return True
|
|
|
|
|
|
|
|
|
def validate_url_container(container):
|
|
|
"""validate a potentially nested collection of urls."""
|
|
|
if isinstance(container, basestring):
|
|
|
url = container
|
|
|
return validate_url(url)
|
|
|
elif isinstance(container, dict):
|
|
|
container = container.itervalues()
|
|
|
|
|
|
for element in container:
|
|
|
validate_url_container(element)
|
|
|
|
|
|
|
|
|
def split_url(url):
|
|
|
"""split a zmq url (tcp://ip:port) into ('tcp','ip','port')."""
|
|
|
proto_addr = url.split('://')
|
|
|
assert len(proto_addr) == 2, 'Invalid url: %r'%url
|
|
|
proto, addr = proto_addr
|
|
|
lis = addr.split(':')
|
|
|
assert len(lis) == 2, 'Invalid url: %r'%url
|
|
|
addr,s_port = lis
|
|
|
return proto,addr,s_port
|
|
|
|
|
|
def disambiguate_ip_address(ip, location=None):
|
|
|
"""turn multi-ip interfaces '0.0.0.0' and '*' into connectable
|
|
|
ones, based on the location (default interpretation of location is localhost)."""
|
|
|
if ip in ('0.0.0.0', '*'):
|
|
|
if location is None or location in PUBLIC_IPS or not PUBLIC_IPS:
|
|
|
# If location is unspecified or cannot be determined, assume local
|
|
|
ip = LOCALHOST
|
|
|
elif location:
|
|
|
return location
|
|
|
return ip
|
|
|
|
|
|
def disambiguate_url(url, location=None):
|
|
|
"""turn multi-ip interfaces '0.0.0.0' and '*' into connectable
|
|
|
ones, based on the location (default interpretation is localhost).
|
|
|
|
|
|
This is for zeromq urls, such as tcp://*:10101."""
|
|
|
try:
|
|
|
proto,ip,port = split_url(url)
|
|
|
except AssertionError:
|
|
|
# probably not tcp url; could be ipc, etc.
|
|
|
return url
|
|
|
|
|
|
ip = disambiguate_ip_address(ip,location)
|
|
|
|
|
|
return "%s://%s:%s"%(proto,ip,port)
|
|
|
|
|
|
|
|
|
#--------------------------------------------------------------------------
|
|
|
# helpers for implementing old MEC API via view.apply
|
|
|
#--------------------------------------------------------------------------
|
|
|
|
|
|
def interactive(f):
|
|
|
"""decorator for making functions appear as interactively defined.
|
|
|
This results in the function being linked to the user_ns as globals()
|
|
|
instead of the module globals().
|
|
|
"""
|
|
|
f.__module__ = '__main__'
|
|
|
return f
|
|
|
|
|
|
@interactive
|
|
|
def _push(**ns):
|
|
|
"""helper method for implementing `client.push` via `client.apply`"""
|
|
|
user_ns = globals()
|
|
|
tmp = '_IP_PUSH_TMP_'
|
|
|
while tmp in user_ns:
|
|
|
tmp = tmp + '_'
|
|
|
try:
|
|
|
for name, value in ns.iteritems():
|
|
|
user_ns[tmp] = value
|
|
|
exec "%s = %s" % (name, tmp) in user_ns
|
|
|
finally:
|
|
|
user_ns.pop(tmp, None)
|
|
|
|
|
|
@interactive
|
|
|
def _pull(keys):
|
|
|
"""helper method for implementing `client.pull` via `client.apply`"""
|
|
|
if isinstance(keys, (list,tuple, set)):
|
|
|
return map(lambda key: eval(key, globals()), keys)
|
|
|
else:
|
|
|
return eval(keys, globals())
|
|
|
|
|
|
@interactive
|
|
|
def _execute(code):
|
|
|
"""helper method for implementing `client.execute` via `client.apply`"""
|
|
|
exec code in globals()
|
|
|
|
|
|
#--------------------------------------------------------------------------
|
|
|
# extra process management utilities
|
|
|
#--------------------------------------------------------------------------
|
|
|
|
|
|
_random_ports = set()
|
|
|
|
|
|
def select_random_ports(n):
|
|
|
"""Selects and return n random ports that are available."""
|
|
|
ports = []
|
|
|
for i in xrange(n):
|
|
|
sock = socket.socket()
|
|
|
sock.bind(('', 0))
|
|
|
while sock.getsockname()[1] in _random_ports:
|
|
|
sock.close()
|
|
|
sock = socket.socket()
|
|
|
sock.bind(('', 0))
|
|
|
ports.append(sock)
|
|
|
for i, sock in enumerate(ports):
|
|
|
port = sock.getsockname()[1]
|
|
|
sock.close()
|
|
|
ports[i] = port
|
|
|
_random_ports.add(port)
|
|
|
return ports
|
|
|
|
|
|
def signal_children(children):
|
|
|
"""Relay interupt/term signals to children, for more solid process cleanup."""
|
|
|
def terminate_children(sig, frame):
|
|
|
log = Application.instance().log
|
|
|
log.critical("Got signal %i, terminating children..."%sig)
|
|
|
for child in children:
|
|
|
child.terminate()
|
|
|
|
|
|
sys.exit(sig != SIGINT)
|
|
|
# sys.exit(sig)
|
|
|
for sig in (SIGINT, SIGABRT, SIGTERM):
|
|
|
signal(sig, terminate_children)
|
|
|
|
|
|
def generate_exec_key(keyfile):
|
|
|
import uuid
|
|
|
newkey = str(uuid.uuid4())
|
|
|
with open(keyfile, 'w') as f:
|
|
|
# f.write('ipython-key ')
|
|
|
f.write(newkey+'\n')
|
|
|
# set user-only RW permissions (0600)
|
|
|
# this will have no effect on Windows
|
|
|
os.chmod(keyfile, stat.S_IRUSR|stat.S_IWUSR)
|
|
|
|
|
|
|
|
|
def integer_loglevel(loglevel):
|
|
|
try:
|
|
|
loglevel = int(loglevel)
|
|
|
except ValueError:
|
|
|
if isinstance(loglevel, str):
|
|
|
loglevel = getattr(logging, loglevel)
|
|
|
return loglevel
|
|
|
|
|
|
def connect_logger(logname, context, iface, root="ip", loglevel=logging.DEBUG):
|
|
|
logger = logging.getLogger(logname)
|
|
|
if any([isinstance(h, handlers.PUBHandler) for h in logger.handlers]):
|
|
|
# don't add a second PUBHandler
|
|
|
return
|
|
|
loglevel = integer_loglevel(loglevel)
|
|
|
lsock = context.socket(zmq.PUB)
|
|
|
lsock.connect(iface)
|
|
|
handler = handlers.PUBHandler(lsock)
|
|
|
handler.setLevel(loglevel)
|
|
|
handler.root_topic = root
|
|
|
logger.addHandler(handler)
|
|
|
logger.setLevel(loglevel)
|
|
|
|
|
|
def connect_engine_logger(context, iface, engine, loglevel=logging.DEBUG):
|
|
|
logger = logging.getLogger()
|
|
|
if any([isinstance(h, handlers.PUBHandler) for h in logger.handlers]):
|
|
|
# don't add a second PUBHandler
|
|
|
return
|
|
|
loglevel = integer_loglevel(loglevel)
|
|
|
lsock = context.socket(zmq.PUB)
|
|
|
lsock.connect(iface)
|
|
|
handler = EnginePUBHandler(engine, lsock)
|
|
|
handler.setLevel(loglevel)
|
|
|
logger.addHandler(handler)
|
|
|
logger.setLevel(loglevel)
|
|
|
return logger
|
|
|
|
|
|
def local_logger(logname, loglevel=logging.DEBUG):
|
|
|
loglevel = integer_loglevel(loglevel)
|
|
|
logger = logging.getLogger(logname)
|
|
|
if any([isinstance(h, logging.StreamHandler) for h in logger.handlers]):
|
|
|
# don't add a second StreamHandler
|
|
|
return
|
|
|
handler = logging.StreamHandler()
|
|
|
handler.setLevel(loglevel)
|
|
|
formatter = logging.Formatter("%(asctime)s.%(msecs).03d [%(name)s] %(message)s",
|
|
|
datefmt="%Y-%m-%d %H:%M:%S")
|
|
|
handler.setFormatter(formatter)
|
|
|
|
|
|
logger.addHandler(handler)
|
|
|
logger.setLevel(loglevel)
|
|
|
return logger
|
|
|
|
|
|
def set_hwm(sock, hwm=0):
|
|
|
"""set zmq High Water Mark on a socket
|
|
|
|
|
|
in a way that always works for various pyzmq / libzmq versions.
|
|
|
"""
|
|
|
import zmq
|
|
|
|
|
|
for key in ('HWM', 'SNDHWM', 'RCVHWM'):
|
|
|
opt = getattr(zmq, key, None)
|
|
|
if opt is None:
|
|
|
continue
|
|
|
try:
|
|
|
sock.setsockopt(opt, hwm)
|
|
|
except zmq.ZMQError:
|
|
|
pass
|
|
|
|
|
|
|
