def __exit__(self, ex_type, ex_value, ex_traceback):
if not ex_value:
return True
if isinstance(ex_value, exception.Forbidden):
raise Fault(
webob.exc.HTTPForbidden(explanation=ex_value.format_message()))
elif isinstance(ex_value, exception.VersionNotFoundForAPIMethod):
raise
elif isinstance(ex_value, exception.Invalid):
raise Fault(
exception.ConvertedException(
code=ex_value.code, explanation=ex_value.format_message()))
elif isinstance(ex_value, TypeError):
exc_info = (ex_type, ex_value, ex_traceback)
LOG.error(_LE('Exception handling resource: %s'),
ex_value,
exc_info=exc_info)
raise Fault(webob.exc.HTTPBadRequest())
elif isinstance(ex_value, Fault):
LOG.info(_LI("Fault thrown: %s"), ex_value)
raise ex_value
elif isinstance(ex_value, webob.exc.HTTPException):
LOG.info(_LI("HTTP exception thrown: %s"), ex_value)
raise Fault(ex_value)
# We didn't handle the exception
return False
def _error(self, inner, req):
LOG.exception(_LE("Caught error: %s"), six.text_type(inner))
safe = getattr(inner, 'safe', False)
headers = getattr(inner, 'headers', None)
status = getattr(inner, 'code', 500)
if status is None:
status = 500
msg_dict = dict(url=req.url, status=status)
LOG.info(_LI("%(url)s returned with HTTP %(status)d"), msg_dict)
outer = self.status_to_type(status)
if headers:
outer.headers = headers
# NOTE(johannes): We leave the explanation empty here on
# purpose. It could possibly have sensitive information
# that should not be returned back to the user. See
# bugs 868360 and 874472
# NOTE(eglynn): However, it would be over-conservative and
# inconsistent with the EC2 API to hide every exception,
# including those that are safe to expose, see bug 1021373
if safe:
user_locale = req.best_match_language()
inner_msg = translate(inner.message, user_locale)
outer.explanation = '%s: %s' % (inner.__class__.__name__,
inner_msg)
return wsgi.Fault(outer)
def wait(self):
"""Block, until the server has stopped.
Waits on the server's eventlet to finish, then returns.
:returns: None
"""
try:
if self._server is not None:
self._pool.waitall()
self._server.wait()
except greenlet.GreenletExit:
LOG.info(_LI("WSGI server has stopped."))
def stop(self):
"""Stop this server.
This is not a very nice action, as currently the method by which a
server is stopped is by killing its eventlet.
:returns: None
"""
LOG.info(_LI("Stopping WSGI server."))
if self._server is not None:
# Resize pool to stop new requests from being processed
self._pool.resize(0)
self._server.kill()
def __init__(self,
name,
app,
host='0.0.0.0',
port=0,
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: fastrunner.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_size = pool_size or self.default_pool_size
self._pool = eventlet.GreenPool(self.pool_size)
self._logger = logging.getLogger("fastrunner.%s.wsgi.server" %
self.name)
self._use_ssl = use_ssl
self._max_url_len = max_url_len
self.client_socket_timeout = CONF.client_socket_timeout or None
if backlog < 1:
raise exception.InvalidInput(
reason=_('The backlog must be more than 0'))
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(_LE("Could not bind to %(host)s:%(port)s"), {
'host': host,
'port': port
})
raise
(self.host, self.port) = self._socket.getsockname()[0:2]
LOG.info(_LI("%(name)s listening on %(host)s:%(port)s"), {
'name': self.name,
'host': self.host,
'port': self.port
})
def __init__(self, init_only=None, v3mode=False):
# TODO(cyeoh): bp v3-api-extension-framework. Currently load
# all extensions but eventually should be able to exclude
# based on a config file
# TODO(oomichi): We can remove v3mode argument after moving all v3 APIs
# to v2.1.
def _check_load_extension(ext):
if (self.init_only is None
or ext.obj.alias in self.init_only) and isinstance(
ext.obj, extensions.V21APIExtensionBase):
return self._register_extension(ext)
return False
if not CONF.osapi_v21.enabled:
LOG.info(_LI("V2.1 API has been disabled by configuration"))
LOG.warning(_LW("In the M release you must run the v2.1 API."))
return
if (CONF.osapi_v21.extensions_blacklist
or CONF.osapi_v21.extensions_whitelist):
LOG.warning(
_LW('In the M release you must run all of the API. '
'The concept of API extensions will be removed from '
'the codebase to ensure there is a single Compute API.'))
self.init_only = init_only
LOG.debug("v21 API Extension Blacklist: %s",
CONF.osapi_v21.extensions_blacklist)
LOG.debug("v21 API Extension Whitelist: %s",
CONF.osapi_v21.extensions_whitelist)
in_blacklist_and_whitelist = set(
CONF.osapi_v21.extensions_whitelist).intersection(
CONF.osapi_v21.extensions_blacklist)
if len(in_blacklist_and_whitelist) != 0:
LOG.warning(_LW("Extensions in both blacklist and whitelist: %s"),
list(in_blacklist_and_whitelist))
self.api_extension_manager = stevedore.enabled.EnabledExtensionManager(
namespace=self.api_extension_namespace(),
check_func=_check_load_extension,
invoke_on_load=True,
invoke_kwds={"extension_info": self.loaded_extension_info})
if v3mode:
mapper = PlainMapper()
else:
mapper = ProjectMapper()
self.resources = {}
# NOTE(cyeoh) Core API support is rewritten as extensions
# but conceptually still have core
if list(self.api_extension_manager):
# NOTE(cyeoh): Stevedore raises an exception if there are
# no plugins detected. I wonder if this is a bug.
self._register_resources_check_inherits(mapper)
self.api_extension_manager.map(self._register_controllers)
missing_core_extensions = self.get_missing_core_extensions(
self.loaded_extension_info.get_extensions().keys())
#if not self.init_only and missing_core_extensions:
# LOG.critical(_LC("Missing core API extensions: %s"),
# missing_core_extensions)
# raise exception.CoreAPIMissing(
# missing_apis=missing_core_extensions)
LOG.info(_LI("Loaded extensions: %s"),
sorted(self.loaded_extension_info.get_extensions().keys()))
super(APIRouterV21, self).__init__(mapper)