def init():
from oslo.config import cfg
CONF = cfg.CONF
if 'remote_debug' not in CONF:
return
if not(CONF.remote_debug.host and CONF.remote_debug.port):
return
from mvpn.openstack.common.gettextutils import _
from mvpn.openstack.common import log as logging
LOG = logging.getLogger(__name__)
LOG.debug(_('Listening on %(host)s:%(port)s for debug connection'),
{'host': CONF.remote_debug.host,
'port': CONF.remote_debug.port})
from pydev import pydevd
pydevd.settrace(host=CONF.remote_debug.host,
port=CONF.remote_debug.port,
stdoutToServer=True,
stderrToServer=True)
LOG.warn(_('WARNING: Using the remote debug option changes how '
'Nova uses the eventlet library to support async IO. This '
'could result in failures that do not occur under normal '
'operation. Use at your own risk.'))
def __init__(
self,
name,
app,
host="0.0.0.0",
port=9000,
pool_size=None,
protocol=eventlet.wsgi.HttpProtocol,
backlog=128,
use_ssl=False,
max_url_len=None,
):
"""Initialize, but do not start, a WSGI server.
:param name: Pretty name for logging.
:param app: The WSGI application to serve.
:param host: IP address to serve the application.
:param port: Port number to server the application.
:param pool_size: Maximum number of eventlets to spawn concurrently.
:param backlog: Maximum number of queued connections.
:param max_url_len: Maximum length of permitted URLs.
:returns: None
:raises: nova.exception.InvalidInput
"""
# Allow operators to customize http requests max header line size.
eventlet.wsgi.MAX_HEADER_LINE = CONF.max_header_line
self.name = name
self.app = app
self._server = None
self._protocol = protocol
self._pool = eventlet.GreenPool(pool_size or self.default_pool_size)
self._logger = logging.getLogger("mvpn.%s.wsgi.server" % self.name)
self._wsgi_logger = logging.WritableLogger(self._logger)
self._use_ssl = use_ssl
self._max_url_len = max_url_len
if backlog < 1:
raise exception.InvalidInput(reason="The backlog must be more than 1")
bind_addr = (host, port)
# TODO(dims): eventlet's green dns/socket module does not actually
# support IPv6 in getaddrinfo(). We need to get around this in the
# future or monitor upstream for a fix
try:
info = socket.getaddrinfo(bind_addr[0], bind_addr[1], socket.AF_UNSPEC, socket.SOCK_STREAM)[0]
family = info[0]
bind_addr = info[-1]
except Exception:
family = socket.AF_INET
try:
self._socket = eventlet.listen(bind_addr, family, backlog=backlog)
except EnvironmentError:
LOG.error(_("Could not bind to %(host)s:%(port)s"), {"host": host, "port": port})
raise
(self.host, self.port) = self._socket.getsockname()[0:2]
LOG.info(_("%(name)s listening on %(host)s:%(port)s") % self.__dict__)
from eventlet import greenpool
from eventlet import greenthread
from mvpn.openstack.common import loopingcall
from mvpn.openstack.common import log as logging
LOG = logging.getLogger(__name__)
def _thread_done(gt, *args, **kwargs):
"""Callback function"""
kwargs['group'].thread_done(kwargs['thread'])
class Thread(object):
def __init__(self, thread, group):
self.thread = thread
self.thread.link(_thread_done, group=group, thread=self)
def stop(self):
self.thread.kill()
def wait(self):
return self.thread.wait()
class ThreadGroup(object):
"""The point of the ThreadGroup classis to:
* keep track of timers and greenthreads (making it easier to stop them
when need be).
* provide an easy API to add timers.