openstack/manila
Code Issues Proposed changes

Add possibility to run 'manila-api' with wsgi web servers

Browse Source 
One of the goals for Pike [1] is to make each API service be able to
run under web servers that support WSGI applications,
such as Apache (+mod-wsgi) and Nginx (+uWSGI).

Do following to address governance requirements:
- Split existing manila/wsgi.py module into 3 modules:
  First (manila/wsgi/eventlet_server.py) is used by
  eventlet-based WSGI application approach.
  Second (manila/wsgi/wsgi.py) is used for WSGI web servers.
  And third (manila/wsgi/common.py) is common code for both.
  All three are made in cinder-like way to have alike-approach.
- Reuse common code from "oslo_service/wsgi.py" module that
  allows us to remove code duplication.
- Delete config opts that are defined by newly reused common code.
- Register new entry point that will be manila wsgi app: "manila-wsgi".
- Fix "manila/api/openstack/wsgi.py" module to be compatible
  with str/bytes handling approach used by Apache mod-wsgi plugin using
  different python versions (2/3).
- Add web server config template "devstack/apache-manila.template"
- Add devstack support where usage of this feature can be
  enabled or disabled using "MANILA_USE_MOD_WSGI" env var.
  It is set to "True" by default, because it is requirement for Pike
  release - to have it running in all CI jobs.
  Disable it only for one CI job that uses dummy driver and tests
  various manila core features that are not covered by other CI jobs.

[1] https://governance.openstack.org/tc/goals/pike/deploy-api-in-wsgi.html

Partially-Implements BluePrint wsgi-web-servers-support
DocImpact
Change-Id: Ibdef3c6810b65a5d6f3611e2d0079c635ee523ab
This commit is contained in:
Valeriy Ponomaryov 2017-03-21 17:25:26 +03:00 committed by vponomaryov
parent 2fb902d8e2
commit 16bfc82962
32 changed files with 607 additions and 948 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
contrib/ci/pre_test_hook.sh
View File

@ -85,6 +85,12 @@ elif [[ "$DRIVER" == "dummy" ]]; then
driver_path="manila.tests.share.drivers.dummy.DummyDriver"
DEFAULT_EXTRA_SPECS="'snapshot_support=True create_share_from_snapshot_support=True revert_to_snapshot_support=True mount_snapshot_support=True'"
echo "MANILA_SERVICE_IMAGE_ENABLED=False" >> $localconf
# Run dummy driver CI job using standalone approach for running
# manila API service just because we need to test this approach too,
# that is very useful for development needs.
echo "MANILA_USE_MOD_WSGI=False" >> $localconf
echo "SHARE_DRIVER=$driver_path" >> $localconf
echo "SUPPRESS_ERRORS_IN_CLEANUP=False" >> $localconf
echo "MANILA_REPLICA_STATE_UPDATE_INTERVAL=10" >> $localconf

25
devstack/apache-manila.template Normal file
View File

@ -0,0 +1,25 @@
Listen %PORT%
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\" %D(us)" manila_combined
<VirtualHost *:%PORT%>
WSGIDaemonProcess manila-api processes=%APIWORKERS% threads=2 user=%USER% display-name=%{GROUP}
WSGIProcessGroup manila-api
WSGIScriptAlias / %MANILA_BIN_DIR%/manila-wsgi
WSGIApplicationGroup %{GLOBAL}
WSGIPassAuthorization On
<IfVersion >= 2.4>
ErrorLogFormat "%{cu}t %M"
</IfVersion>
ErrorLog /var/log/%APACHE_NAME%/manila_api.log
CustomLog /var/log/%APACHE_NAME%/manila_api_access.log manila_combined
<Directory %MANILA_BIN_DIR%>
<IfVersion >= 2.4>
Require all granted
</IfVersion>
<IfVersion < 2.4>
Order allow,deny
Allow from all
</IfVersion>
</Directory>
</VirtualHost>

41
devstack/plugin.sh
View File

@ -59,6 +59,22 @@ function cleanup_manila {
_clean_zfsonlinux_data
}
# _config_manila_apache_wsgi() - Configure manila-api wsgi application.
function _config_manila_apache_wsgi {
local manila_api_apache_conf
local venv_path=""
manila_api_apache_conf=$(apache_site_config_for manila-api)
sudo cp $MANILA_DIR/devstack/apache-manila.template $manila_api_apache_conf
sudo sed -e "
s|%APACHE_NAME%|$APACHE_NAME|g;
s|%MANILA_BIN_DIR%|$MANILA_BIN_DIR|g;
s|%PORT%|$MANILA_SERVICE_PORT|g;
s|%APIWORKERS%|$API_WORKERS|g;
s|%USER%|$STACK_USER|g;
" -i $manila_api_apache_conf
}
# configure_default_backends - configures default Manila backends with generic driver.
function configure_default_backends {
# Configure two default backends with generic drivers onboard
@ -257,6 +273,10 @@ function configure_manila {
MANILA_CONFIGURE_GROUPS=${MANILA_CONFIGURE_GROUPS:-"$MANILA_ENABLED_BACKENDS"}
set_config_opts $MANILA_CONFIGURE_GROUPS
set_config_opts DEFAULT
if [ $(trueorfalse False MANILA_USE_MOD_WSGI) == True ]; then
_config_manila_apache_wsgi
fi
}
@ -759,7 +779,14 @@ function configure_samba {
# start_manila_api - starts manila API services and checks its availability
function start_manila_api {
run_process m-api "$MANILA_BIN_DIR/manila-api --config-file $MANILA_CONF"
if [ $(trueorfalse False MANILA_USE_MOD_WSGI) == True ]; then
install_apache_wsgi
enable_apache_site manila-api
restart_apache_server
tail_log m-api /var/log/$APACHE_NAME/manila_api.log
else
run_process m-api "$MANILA_BIN_DIR/manila-api --config-file $MANILA_CONF"
fi
echo "Waiting for Manila API to start..."
if ! wait_for_service $SERVICE_TIMEOUT $MANILA_SERVICE_PROTOCOL://$MANILA_SERVICE_HOST:$MANILA_SERVICE_PORT; then
@ -788,8 +815,16 @@ function start_manila {
# stop_manila - Stop running processes
function stop_manila {
# Kill the manila processes
for serv in m-api m-sch m-shr m-dat; do
# Disable manila api service
if [ $(trueorfalse False MANILA_USE_MOD_WSGI) == True ]; then
disable_apache_site manila-api
restart_apache_server
else
stop_process m-api
fi
# Kill all other manila processes
for serv in m-sch m-shr m-dat; do
stop_process $serv
done
}

12
devstack/settings
View File

@ -73,10 +73,9 @@ MANILA_DEFAULT_SHARE_GROUP_TYPE_SPECS=${MANILA_DEFAULT_SHARE_GROUP_TYPE_SPECS:-'
# Public facing bits
MANILA_SERVICE_HOST=${MANILA_SERVICE_HOST:-$SERVICE_HOST}
MANILA_SERVICE_PORT=${MANILA_SERVICE_PORT:-8786}
MANILA_SERVICE_PORT_INT=${MANILA_SERVICE_PORT_INT:-18776}
MANILA_SERVICE_PORT_INT=${MANILA_SERVICE_PORT_INT:-18786}
MANILA_SERVICE_PROTOCOL=${MANILA_SERVICE_PROTOCOL:-$SERVICE_PROTOCOL}
# Support entry points installation of console scripts
if [[ -d $MANILA_DIR/bin ]]; then
MANILA_BIN_DIR=$MANILA_DIR/bin
@ -84,7 +83,6 @@ else
MANILA_BIN_DIR=$(get_python_exec_prefix)
fi
# Common opts
SHARE_NAME_PREFIX=${SHARE_NAME_PREFIX:-share-}
MANILA_ENABLED_SHARE_PROTOCOLS=${ENABLED_SHARE_PROTOCOLS:-"NFS,CIFS"}
@ -97,6 +95,14 @@ MANILA_SERVICE_SECGROUP="manila-service"
# migrations again.
MANILA_USE_DOWNGRADE_MIGRATIONS=${MANILA_USE_DOWNGRADE_MIGRATIONS:-"False"}
# Toggle for deploying manila-api service under Apache web server with enabled 'mod_wsgi' plugin.
# Disabled by default, which means running manila-api service as standalone
# eventlet-based WSGI application.
# Set it as True, because starting with Pike it is requirement from
# 'governance' project. See:
# https://governance.openstack.org/tc/goals/pike/deploy-api-in-wsgi.html#completion-criteria
MANILA_USE_MOD_WSGI=${MANILA_USE_MOD_WSGI:-True}
# Common info for Generic driver(s)
SHARE_DRIVER=${SHARE_DRIVER:-manila.share.drivers.generic.GenericShareDriver}

2
manila/api/middleware/auth.py
View File

@ -27,7 +27,7 @@ import webob.exc
from manila.api.openstack import wsgi
from manila import context
from manila.i18n import _
from manila import wsgi as base_wsgi
from manila.wsgi import common as base_wsgi
use_forwarded_for_opt = cfg.BoolOpt(
'use_forwarded_for',

2
manila/api/middleware/fault.py
View File

@ -21,7 +21,7 @@ import webob.exc
from manila.api.openstack import wsgi
from manila import utils
from manila import wsgi as base_wsgi
from manila.wsgi import common as base_wsgi
LOG = log.getLogger(__name__)

12
manila/api/openstack/__init__.py
View File

@ -19,11 +19,11 @@ WSGI middleware for OpenStack API controllers.
"""
from oslo_log import log
from oslo_service import wsgi as base_wsgi
import routes
from manila.api.openstack import wsgi
from manila.i18n import _
from manila import wsgi as base_wsgi
LOG = log.getLogger(__name__)
@ -117,13 +117,3 @@ class APIRouter(base_wsgi.Router):
def _setup_routes(self, mapper, ext_mgr):
raise NotImplementedError
class FaultWrapper(base_wsgi.Middleware):
def __init__(self, application):
LOG.warning('manila.api.openstack:FaultWrapper is deprecated. '
'Please use '
'manila.api.middleware.fault:FaultWrapper instead.')
# Avoid circular imports from here.
from manila.api.middleware import fault
super(FaultWrapper, self).__init__(fault.FaultWrapper(application))

25
manila/api/openstack/wsgi.py
View File

@ -31,7 +31,8 @@ from manila.common import constants
from manila import exception
from manila.i18n import _
from manila import policy
from manila import wsgi
from manila import utils
from manila.wsgi import common as wsgi
LOG = log.getLogger(__name__)
@ -860,15 +861,20 @@ class Resource(wsgi.Application):
if hasattr(response, 'headers'):
for hdr, val in response.headers.items():
# Headers must be utf-8 strings
response.headers[hdr] = six.text_type(val)
val = utils.convert_str(val)
response.headers[hdr] = val
if not request.api_version_request.is_null():
response.headers[API_VERSION_REQUEST_HEADER] = (
request.api_version_request.get_string())
if request.api_version_request.experimental:
# NOTE(vponomaryov): Translate our boolean header
# to string explicitly to avoid 'TypeError' failure
# running manila API under Apache + mod-wsgi.
# It is safe to do so, because all headers are returned as
# strings anyway.
response.headers[EXPERIMENTAL_API_REQUEST_HEADER] = (
request.api_version_request.experimental)
'%s' % request.api_version_request.experimental)
response.headers['Vary'] = API_VERSION_REQUEST_HEADER
return response
@ -1280,14 +1286,19 @@ class Fault(webob.exc.HTTPException):
'message': self.wrapped_exc.explanation}}
if code == 413:
retry = self.wrapped_exc.headers['Retry-After']
fault_data[fault_name]['retryAfter'] = retry
fault_data[fault_name]['retryAfter'] = '%s' % retry
if not req.api_version_request.is_null():
self.wrapped_exc.headers[API_VERSION_REQUEST_HEADER] = (
req.api_version_request.get_string())
if req.api_version_request.experimental:
# NOTE(vponomaryov): Translate our boolean header
# to string explicitly to avoid 'TypeError' failure
# running manila API under Apache + mod-wsgi.
# It is safe to do so, because all headers are returned as
# strings anyway.
self.wrapped_exc.headers[EXPERIMENTAL_API_REQUEST_HEADER] = (
req.api_version_request.experimental)
'%s' % req.api_version_request.experimental)
self.wrapped_exc.headers['Vary'] = API_VERSION_REQUEST_HEADER
content_type = req.best_match_content_type()
@ -1330,7 +1341,7 @@ class OverLimitFault(webob.exc.HTTPException):
def _retry_after(retry_time):
delay = int(math.ceil(retry_time - time.time()))
retry_after = delay if delay > 0 else 0
headers = {'Retry-After': '%d' % retry_after}
headers = {'Retry-After': '%s' % retry_after}
return headers
@webob.dec.wsgify(RequestClass=Request)

2
manila/api/v1/limits.py
View File

@ -33,7 +33,7 @@ from manila.api.openstack import wsgi
from manila.api.views import limits as limits_views
from manila.i18n import _
from manila import quota
from manila import wsgi as base_wsgi
from manila.wsgi import common as base_wsgi
QUOTAS = quota.QUOTAS

3
manila/common/config.py
View File

@ -41,9 +41,6 @@ log.register_options(CONF)
core_opts = [
cfg.StrOpt('api_paste_config',
default="api-paste.ini",
help='File name for the paste.deploy config for manila-api.'),
cfg.StrOpt('state_path',
default='/var/lib/manila',
help="Top-level directory for maintaining manila's state."),

2
manila/exception.py
View File

@ -386,7 +386,7 @@ class WillNotSchedule(ManilaException):
class QuotaError(ManilaException):
message = _("Quota exceeded: code=%(code)s.")
code = 413
headers = {'Retry-After': 0}
headers = {'Retry-After': '0'}
safe = True

5
manila/opts.py
View File

@ -85,7 +85,7 @@ import manila.share.hook
import manila.share.manager
import manila.volume
import manila.volume.cinder
import manila.wsgi
import manila.wsgi.eventlet_server
# List of *all* options in [DEFAULT] namespace of manila.
@ -165,8 +165,7 @@ _global_opt_lists = [
manila.share.hook.hook_options,
manila.share.manager.share_manager_opts,
manila.volume._volume_opts,
manila.wsgi.eventlet_opts,
manila.wsgi.socket_opts,
manila.wsgi.eventlet_server.socket_opts,
]
_opts = [

15
manila/service.py
View File

@ -26,6 +26,7 @@ from oslo_log import log
import oslo_messaging as messaging
from oslo_service import loopingcall
from oslo_service import service
from oslo_service import wsgi
from oslo_utils import importutils
from manila import context
@ -34,7 +35,6 @@ from manila import db
from manila import exception
from manila import rpc
from manila import version
from manila import wsgi
LOG = log.getLogger(__name__)
@ -283,7 +283,7 @@ class WSGIService(service.ServiceBase):
"""
self.name = name
self.manager = self._get_manager()
self.loader = loader or wsgi.Loader()
self.loader = loader or wsgi.Loader(CONF)
if not rpc.initialized():
rpc.init(CONF)
self.app = self.loader.load_app(name)
@ -296,10 +296,13 @@ class WSGIService(service.ServiceBase):
"greater than 1. Input value ignored." % {'name': name})
# Reset workers to default
self.workers = None
self.server = wsgi.Server(name,
self.app,
host=self.host,
port=self.port)
self.server = wsgi.Server(
CONF,
name,
self.app,
host=self.host,
port=self.port,
)
def _get_manager(self):
"""Initialize a Manager object appropriate for this service.

2
manila/tests/api/fakes.py
View File

@ -13,6 +13,7 @@
# License for the specific language governing permissions and limitations
# under the License.
from oslo_service import wsgi
from oslo_utils import timeutils
from oslo_utils import uuidutils
import routes
@ -33,7 +34,6 @@ from manila.api import versions
from manila.common import constants
from manila import context
from manila import exception
from manila import wsgi
FAKE_UUID = 'aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa'

77
manila/tests/api/middleware/test_faults.py
View File

@ -19,7 +19,9 @@ import webob
import webob.dec
import webob.exc
from manila.api.middleware import fault
from manila.api.openstack import wsgi
from manila import exception
from manila import test
@ -72,7 +74,7 @@ class TestFaults(test.TestCase):
"overLimit": {
"message": "sorry",
"code": 413,
"retryAfter": 4,
"retryAfter": '4',
},
}
actual = jsonutils.loads(response.body)
@ -109,3 +111,76 @@ class TestFaults(test.TestCase):
"""Ensure the status_int is set correctly on faults."""
fault = wsgi.Fault(webob.exc.HTTPBadRequest(explanation='what?'))
self.assertEqual(400, fault.status_int)
class ExceptionTest(test.TestCase):
def _wsgi_app(self, inner_app):
return fault.FaultWrapper(inner_app)
def _do_test_exception_safety_reflected_in_faults(self, expose):
class ExceptionWithSafety(exception.ManilaException):
safe = expose
@webob.dec.wsgify
def fail(req):
raise ExceptionWithSafety('some explanation')
api = self._wsgi_app(fail)
resp = webob.Request.blank('/').get_response(api)
self.assertIn('{"computeFault', six.text_type(resp.body), resp.body)
expected = ('ExceptionWithSafety: some explanation' if expose else
'The server has either erred or is incapable '
'of performing the requested operation.')
self.assertIn(expected, six.text_type(resp.body), resp.body)
self.assertEqual(500, resp.status_int, resp.body)
def test_safe_exceptions_are_described_in_faults(self):
self._do_test_exception_safety_reflected_in_faults(True)
def test_unsafe_exceptions_are_not_described_in_faults(self):
self._do_test_exception_safety_reflected_in_faults(False)
def _do_test_exception_mapping(self, exception_type, msg):
@webob.dec.wsgify
def fail(req):
raise exception_type(msg)
api = self._wsgi_app(fail)
resp = webob.Request.blank('/').get_response(api)
self.assertIn(msg, six.text_type(resp.body), resp.body)
self.assertEqual(exception_type.code, resp.status_int, resp.body)
if hasattr(exception_type, 'headers'):
for (key, value) in exception_type.headers.items():
self.assertIn(key, resp.headers)
self.assertEqual(value, resp.headers[key])
def test_quota_error_mapping(self):
self._do_test_exception_mapping(exception.QuotaError, 'too many used')
def test_non_manila_notfound_exception_mapping(self):
class ExceptionWithCode(Exception):
code = 404
self._do_test_exception_mapping(ExceptionWithCode,
'NotFound')
def test_non_manila_exception_mapping(self):
class ExceptionWithCode(Exception):
code = 417
self._do_test_exception_mapping(ExceptionWithCode,
'Expectation failed')
def test_exception_with_none_code_throws_500(self):
class ExceptionWithNoneCode(Exception):
code = None
@webob.dec.wsgify
def fail(req):
raise ExceptionWithNoneCode()
api = self._wsgi_app(fail)
resp = webob.Request.blank('/').get_response(api)
self.assertEqual(500, resp.status_int)

2
manila/tests/api/test_versions.py
View File

@ -185,7 +185,7 @@ class ExperimentalAPITestCase(test.TestCase):
self.assertEqual('2.0', response.headers[version_header_name])
if experimental:
self.assertEqual(experimental,
self.assertEqual('%s' % experimental,
response.headers.get(experimental_header_name))
else:
self.assertNotIn(experimental_header_name, response.headers)

22
manila/tests/api/test_wsgi.py
View File

@ -19,33 +19,19 @@
Test WSGI basics and provide some helper functions for other WSGI tests.
"""
from manila import test
from oslo_service import wsgi
import routes
import six
import webob
from manila import wsgi
from manila import test
from manila.wsgi import common as common_wsgi
class Test(test.TestCase):
def test_debug(self):
class Application(wsgi.Application):
"""Dummy application to test debug."""
def __call__(self, environ, start_response):
start_response("200", [("X-Test", "checking")])
return [six.b('Test result')]
application = wsgi.Debug(Application())
result = webob.Request.blank('/').get_response(application)
self.assertEqual(six.b("Test result"), result.body)
def test_router(self):
class Application(wsgi.Application):
class Application(common_wsgi.Application):
"""Test application to call from router."""
def __call__(self, environ, start_response):

2
manila/tests/conf_fixture.py
View File

@ -17,6 +17,7 @@
import os
from oslo_policy import opts
from oslo_service import wsgi
from manila.common import config
@ -38,6 +39,7 @@ def set_defaults(conf):
_safe_set_of_opts(conf, 'service_instance_user', 'fake_user')
_API_PASTE_PATH = os.path.abspath(os.path.join(CONF.state_path,
'etc/manila/api-paste.ini'))
wsgi.register_opts(conf)
_safe_set_of_opts(conf, 'api_paste_config', _API_PASTE_PATH)
_safe_set_of_opts(conf, 'share_driver',
'manila.tests.fake_driver.FakeShareDriver')

4
manila/tests/test_service.py
View File

@ -24,6 +24,7 @@ Unit Tests for remote procedure calls using queue
import ddt
import mock
from oslo_config import cfg
from oslo_service import wsgi
from manila import context
from manila import db
@ -32,7 +33,6 @@ from manila import manager
from manila import service
from manila import test
from manila import utils
from manila import wsgi
test_service_opts = [
cfg.StrOpt("fake_manager",
@ -224,5 +224,5 @@ class TestWSGIService(test.TestCase):
# Resetting pool size to default
self.test_service.reset()
self.test_service.start()
self.assertEqual(1000, self.test_service.server._pool.size)
self.assertGreater(self.test_service.server._pool.size, 0)
wsgi.Loader.load_app.assert_called_once_with("test_service")

37
manila/tests/test_utils.py
View File

@ -25,6 +25,7 @@ from oslo_config import cfg
from oslo_utils import timeutils
from oslo_utils import uuidutils
import paramiko
import six
from webob import exc
import manila
@ -744,3 +745,39 @@ class ShareMigrationHelperTestCase(test.TestCase):
self.assertRaises(expected_exc,
utils.wait_for_access_update, self.context,
db, fake_instance, 1)
@ddt.ddt
class ConvertStrTestCase(test.TestCase):
def test_convert_str_str_input(self):
self.mock_object(utils.encodeutils, 'safe_encode')
input_value = six.text_type("string_input")
output_value = utils.convert_str(input_value)
if six.PY2:
utils.encodeutils.safe_encode.assert_called_once_with(input_value)
self.assertEqual(
utils.encodeutils.safe_encode.return_value, output_value)
else:
self.assertEqual(0, utils.encodeutils.safe_encode.call_count)
self.assertEqual(input_value, output_value)
def test_convert_str_bytes_input(self):
self.mock_object(utils.encodeutils, 'safe_encode')
if six.PY2:
input_value = six.binary_type("binary_input")
else:
input_value = six.binary_type("binary_input", "utf-8")
output_value = utils.convert_str(input_value)
if six.PY2:
utils.encodeutils.safe_encode.assert_called_once_with(input_value)
self.assertEqual(
utils.encodeutils.safe_encode.return_value, output_value)
else:
self.assertEqual(0, utils.encodeutils.safe_encode.call_count)
self.assertIsInstance(output_value, six.string_types)
self.assertEqual(six.text_type("binary_input"), output_value)

334
manila/tests/test_wsgi.py
View File

@ -1,334 +0,0 @@
# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Unit tests for `manila.wsgi`."""
import os.path
import ssl
import tempfile
import ddt
import eventlet
import mock
from oslo_config import cfg
from oslo_utils import netutils
import six
from six.moves import urllib
import testtools
import webob
import webob.dec
from manila.api.middleware import fault
from manila import exception
from manila import test
from manila import utils
import manila.wsgi
CONF = cfg.CONF
TEST_VAR_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__),
'var'))
class TestLoaderNothingExists(test.TestCase):
"""Loader tests where os.path.exists always returns False."""
def test_config_not_found(self):
self.assertRaises(
manila.exception.ConfigNotFound,
manila.wsgi.Loader,
'nonexistent_file.ini',
)
class TestLoaderNormalFilesystem(test.TestCase):
"""Loader tests with normal filesystem (unmodified os.path module)."""
_paste_config = """
[app:test_app]
use = egg:Paste#static
document_root = /tmp
"""
def setUp(self):
super(TestLoaderNormalFilesystem, self).setUp()
self.config = tempfile.NamedTemporaryFile(mode="w+t")
self.config.write(self._paste_config.lstrip())
self.config.seek(0)
self.config.flush()
self.loader = manila.wsgi.Loader(self.config.name)
self.addCleanup(self.config.close)
def test_config_found(self):
self.assertEqual(self.config.name, self.loader.config_path)
def test_app_not_found(self):
self.assertRaises(
manila.exception.PasteAppNotFound,
self.loader.load_app,
"non-existent app",
)
def test_app_found(self):
url_parser = self.loader.load_app("test_app")
self.assertEqual("/tmp", url_parser.directory)
@ddt.ddt
class TestWSGIServer(test.TestCase):
"""WSGI server tests."""
def test_no_app(self):
server = manila.wsgi.Server("test_app", None, host="127.0.0.1", port=0)
self.assertEqual("test_app", server.name)
def test_start_random_port(self):
server = manila.wsgi.Server("test_random_port", None, host="127.0.0.1")
server.start()
self.assertNotEqual(0, server.port)
server.stop()
server.wait()
@testtools.skipIf(not netutils.is_ipv6_enabled(),
"Test requires an IPV6 configured interface")
@testtools.skipIf(utils.is_eventlet_bug105(),
'Eventlet bug #105 affect test results.')
def test_start_random_port_with_ipv6(self):
server = manila.wsgi.Server("test_random_port",
None,
host="::1")
server.start()
self.assertEqual("::1", server.host)
self.assertNotEqual(0, server.port)
server.stop()
server.wait()
def test_start_with_default_tcp_options(self):
server = manila.wsgi.Server("test_tcp_options",
None,
host="127.0.0.1")
self.mock_object(
netutils, 'set_tcp_keepalive')
server.start()
netutils.set_tcp_keepalive.assert_called_once_with(
mock.ANY, tcp_keepalive=True, tcp_keepalive_count=None,
tcp_keepalive_interval=None, tcp_keepidle=600)
def test_start_with_custom_tcp_options(self):
CONF.set_default("tcp_keepalive", False)
CONF.set_default("tcp_keepalive_count", 33)
CONF.set_default("tcp_keepalive_interval", 22)
CONF.set_default("tcp_keepidle", 11)
server = manila.wsgi.Server("test_tcp_options",
None,
host="127.0.0.1")
self.mock_object(
netutils, 'set_tcp_keepalive')
server.start()
netutils.set_tcp_keepalive.assert_called_once_with(
mock.ANY, tcp_keepalive=False, tcp_keepalive_count=33,
tcp_keepalive_interval=22, tcp_keepidle=11)
def test_app(self):
self.mock_object(
eventlet, 'spawn', mock.Mock(side_effect=eventlet.spawn))
greetings = 'Hello, World!!!'
def hello_world(env, start_response):
if env['PATH_INFO'] != '/':
start_response('404 Not Found',
[('Content-Type', 'text/plain')])
return ['Not Found\r\n']
start_response('200 OK', [('Content-Type', 'text/plain')])
return [greetings]
server = manila.wsgi.Server(
"test_app", hello_world, host="127.0.0.1", port=0)
server.start()
response = urllib.request.urlopen('http://127.0.0.1:%d/' % server.port)
self.assertEqual(six.b(greetings), response.read())
# Verify provided parameters to eventlet.spawn func
eventlet.spawn.assert_called_once_with(
func=eventlet.wsgi.server,
sock=mock.ANY,
site=server.app,
protocol=server._protocol,
custom_pool=server._pool,
log=server._logger,
socket_timeout=server.client_socket_timeout,
keepalive=manila.wsgi.CONF.wsgi_keep_alive,
)
server.stop()
@ddt.data(0, 0.1, 1, None)
def test_init_server_with_socket_timeout(self, client_socket_timeout):
CONF.set_default("client_socket_timeout", client_socket_timeout)
server = manila.wsgi.Server(
"test_app", lambda *args, **kwargs: None, host="127.0.0.1", port=0)
self.assertEqual(client_socket_timeout, server.client_socket_timeout)
@testtools.skipIf(six.PY3, "bug/1482633")
def test_app_using_ssl(self):
CONF.set_default("ssl_cert_file",
os.path.join(TEST_VAR_DIR, 'certificate.crt'))
CONF.set_default("ssl_key_file",
os.path.join(TEST_VAR_DIR, 'privatekey.key'))
greetings = 'Hello, World!!!'
@webob.dec.wsgify
def hello_world(req):
return greetings
server = manila.wsgi.Server(
"test_app", hello_world, host="127.0.0.1", port=0)
server.start()
if hasattr(ssl, '_create_unverified_context'):
response = urllib.request.urlopen(
'https://127.0.0.1:%d/' % server.port,
context=ssl._create_unverified_context())
else:
response = urllib.request.urlopen(
'https://127.0.0.1:%d/' % server.port)
self.assertEqual(greetings, response.read())
server.stop()
@testtools.skipIf(not netutils.is_ipv6_enabled(),
"Test requires an IPV6 configured interface")
@testtools.skipIf(utils.is_eventlet_bug105(),
'Eventlet bug #105 affect test results.')
@testtools.skipIf(six.PY3, "bug/1482633")
def test_app_using_ipv6_and_ssl(self):
CONF.set_default("ssl_cert_file",
os.path.join(TEST_VAR_DIR, 'certificate.crt'))
CONF.set_default("ssl_key_file",
os.path.join(TEST_VAR_DIR, 'privatekey.key'))
greetings = 'Hello, World!!!'
@webob.dec.wsgify
def hello_world(req):
return greetings
server = manila.wsgi.Server("test_app",
hello_world,
host="::1",
port=0)
server.start()
if hasattr(ssl, '_create_unverified_context'):
response = urllib.request.urlopen(
'https://[::1]:%d/' % server.port,
context=ssl._create_unverified_context())
else:
response = urllib.request.urlopen(
'https://[::1]:%d/' % server.port)
self.assertEqual(greetings, response.read())
server.stop()
def test_reset_pool_size_to_default(self):
server = manila.wsgi.Server("test_resize", None, host="127.0.0.1")
server.start()
# Stopping the server, which in turn sets pool size to 0
server.stop()
self.assertEqual(0, server._pool.size)
# Resetting pool size to default
server.reset()
server.start()
self.assertEqual(1000, server._pool.size)
class ExceptionTest(test.TestCase):
def _wsgi_app(self, inner_app):
return fault.FaultWrapper(inner_app)
def _do_test_exception_safety_reflected_in_faults(self, expose):
class ExceptionWithSafety(exception.ManilaException):
safe = expose
@webob.dec.wsgify
def fail(req):
raise ExceptionWithSafety('some explanation')
api = self._wsgi_app(fail)
resp = webob.Request.blank('/').get_response(api)
self.assertIn('{"computeFault', six.text_type(resp.body), resp.body)
expected = ('ExceptionWithSafety: some explanation' if expose else
'The server has either erred or is incapable '
'of performing the requested operation.')
self.assertIn(expected, six.text_type(resp.body), resp.body)
self.assertEqual(500, resp.status_int, resp.body)
def test_safe_exceptions_are_described_in_faults(self):
self._do_test_exception_safety_reflected_in_faults(True)
def test_unsafe_exceptions_are_not_described_in_faults(self):
self._do_test_exception_safety_reflected_in_faults(False)
def _do_test_exception_mapping(self, exception_type, msg):
@webob.dec.wsgify
def fail(req):
raise exception_type(msg)
api = self._wsgi_app(fail)
resp = webob.Request.blank('/').get_response(api)
self.assertIn(msg, six.text_type(resp.body), resp.body)
self.assertEqual(exception_type.code, resp.status_int, resp.body)
if hasattr(exception_type, 'headers'):
for (key, value) in exception_type.headers.items():
self.assertIn(key, resp.headers)
self.assertEqual(value, resp.headers[key])
def test_quota_error_mapping(self):
self._do_test_exception_mapping(exception.QuotaError, 'too many used')
def test_non_manila_notfound_exception_mapping(self):
class ExceptionWithCode(Exception):
code = 404
self._do_test_exception_mapping(ExceptionWithCode,
'NotFound')
def test_non_manila_exception_mapping(self):
class ExceptionWithCode(Exception):
code = 417
self._do_test_exception_mapping(ExceptionWithCode,
'Expectation failed')
def test_exception_with_none_code_throws_500(self):
class ExceptionWithNoneCode(Exception):
code = None
@webob.dec.wsgify
def fail(req):
raise ExceptionWithNoneCode()
api = self._wsgi_app(fail)
resp = webob.Request.blank('/').get_response(api)
self.assertEqual(500, resp.status_int)

0
manila/tests/wsgi/__init__.py Normal file
View File

45
manila/tests/wsgi/test_common.py Normal file
View File

@ -0,0 +1,45 @@
# Copyright 2017 Mirantis Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from manila import test
from manila.wsgi import common
class FakeApp(common.Application):
def __init__(self, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)
class WSGICommonTestCase(test.TestCase):
def test_application_factory(self):
fake_global_config = mock.Mock()
kwargs = {"k1": "v1", "k2": "v2"}
result = FakeApp.factory(fake_global_config, **kwargs)
fake_global_config.assert_not_called()
self.assertIsInstance(result, FakeApp)
for k, v in kwargs.items():
self.assertTrue(hasattr(result, k))
self.assertEqual(getattr(result, k), v)
def test_application___call__(self):
self.assertRaises(
NotImplementedError,
common.Application(), 'fake_environ', 'fake_start_response')

45
manila/tests/wsgi/test_wsgi.py Normal file
View File

@ -0,0 +1,45 @@
# Copyright 2017 Mirantis Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from manila import test
from manila.wsgi import wsgi
class WSGITestCase(test.TestCase):
def test_initialize_application(self):
self.mock_object(wsgi.log, 'register_options')
self.mock_object(wsgi.cfg.ConfigOpts, '__call__')
self.mock_object(wsgi.config, 'verify_share_protocols')
self.mock_object(wsgi.log, 'setup')
self.mock_object(wsgi.rpc, 'init')
self.mock_object(wsgi.wsgi, 'Loader')
wsgi.sys.argv = ['--verbose', '--debug']
result = wsgi.initialize_application()
self.assertEqual(
wsgi.wsgi.Loader.return_value.load_app.return_value, result)
wsgi.log.register_options.assert_called_once_with(mock.ANY)
wsgi.cfg.ConfigOpts.__call__.assert_called_once_with(
mock.ANY, project="manila", version=wsgi.version.version_string())
wsgi.config.verify_share_protocols.assert_called_once_with()
wsgi.log.setup.assert_called_once_with(mock.ANY, "manila")
wsgi.rpc.init.assert_called_once_with(mock.ANY)
wsgi.wsgi.Loader.assert_called_once_with(mock.ANY)
wsgi.wsgi.Loader.return_value.load_app.assert_called_once_with(
name='osapi_share')

19
manila/utils.py
View File

@ -36,6 +36,7 @@ from oslo_concurrency import lockutils
from oslo_concurrency import processutils
from oslo_config import cfg
from oslo_log import log
from oslo_utils import encodeutils
from oslo_utils import importutils
from oslo_utils import netutils
from oslo_utils import strutils
@ -520,6 +521,24 @@ def require_driver_initialized(func):
return wrapper
def convert_str(text):
"""Convert to native string.
Convert bytes and Unicode strings to native strings:
* convert to bytes on Python 2:
encode Unicode using encodeutils.safe_encode()
* convert to Unicode on Python 3: decode bytes from UTF-8
"""
if six.PY2:
return encodeutils.safe_encode(text)
else:
if isinstance(text, bytes):
return text.decode('utf-8')
else:
return text
def translate_string_size_to_float(string, multiplier='G'):
"""Translates human-readable storage size to float value.

551
manila/wsgi.py
View File

@ -1,551 +0,0 @@
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2010 OpenStack LLC.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Utility methods for working with WSGI servers."""
from __future__ import print_function
import errno
import os
import socket
import ssl
import sys
import time
import eventlet
import eventlet.wsgi
import greenlet
from oslo_config import cfg
from oslo_log import log
from oslo_service import service
from oslo_utils import excutils
from oslo_utils import netutils
from paste import deploy
import routes.middleware
import webob.dec
import webob.exc
from manila.common import config
from manila import exception
from manila.i18n import _
socket_opts = [
cfg.IntOpt('backlog',
default=4096,
help="Number of backlog requests to configure the socket "
"with."),
cfg.BoolOpt('tcp_keepalive',
default=True,
help="Sets the value of TCP_KEEPALIVE (True/False) for each "
"server socket."),
cfg.IntOpt('tcp_keepidle',
default=600,
help="Sets the value of TCP_KEEPIDLE in seconds for each "
"server socket. Not supported on OS X."),
cfg.IntOpt('tcp_keepalive_interval',
help="Sets the value of TCP_KEEPINTVL in seconds for each "
"server socket. Not supported on OS X."),
cfg.IntOpt('tcp_keepalive_count',
help="Sets the value of TCP_KEEPCNT for each "
"server socket. Not supported on OS X."),
cfg.StrOpt('ssl_ca_file',
help="CA certificate file to use to verify "
"connecting clients."),
cfg.StrOpt('ssl_cert_file',
help="Certificate file to use when starting "
"the server securely."),
cfg.StrOpt('ssl_key_file',
help="Private key file to use when starting "
"the server securely."),
]
eventlet_opts = [
cfg.IntOpt('max_header_line',
default=16384,
help="Maximum line size of message headers to be accepted. "
"Option max_header_line may need to be increased when "
"using large tokens (typically those generated by the "
"Keystone v3 API with big service catalogs)."),
cfg.IntOpt('client_socket_timeout',
default=900,
help="Timeout for client connections socket operations. "
"If an incoming connection is idle for this number of "
"seconds it will be closed. A value of '0' means "
"wait forever."),
cfg.BoolOpt('wsgi_keep_alive',
default=True,
help='If False, closes the client socket connection '
'explicitly. Setting it to True to maintain backward '
'compatibility. Recommended setting is set it to False.'),
]
CONF = cfg.CONF
CONF.register_opts(socket_opts)
CONF.register_opts(eventlet_opts)
LOG = log.getLogger(__name__)
class Server(service.ServiceBase):
"""Server class to manage a WSGI server, serving a WSGI application."""
default_pool_size = 1000
def __init__(self, name, app, host=None, port=None, pool_size=None,
protocol=eventlet.wsgi.HttpProtocol, backlog=128):
"""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.
:returns: None
"""
eventlet.wsgi.MAX_HEADER_LINE = CONF.max_header_line
self.client_socket_timeout = CONF.client_socket_timeout
self.name = name
self.app = app
self._host = host or "0.0.0.0"
self._port = port or 0
self._server = None
self._socket = None
self._protocol = protocol
self.pool_size = pool_size or self.default_pool_size
self._pool = eventlet.GreenPool(self.pool_size)
self._logger = log.getLogger("eventlet.wsgi.server")
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
cert_file = CONF.ssl_cert_file
key_file = CONF.ssl_key_file
ca_file = CONF.ssl_ca_file
self._use_ssl = cert_file or key_file
if cert_file and not os.path.exists(cert_file):
raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
if ca_file and not os.path.exists(ca_file):
raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
if key_file and not os.path.exists(key_file):
raise RuntimeError(_("Unable to find key_file : %s") % key_file)
if self._use_ssl and (not cert_file or not key_file):
raise RuntimeError(_("When running server in SSL mode, you must "
"specify both a cert_file and key_file "
"option value in your configuration file"))
retry_until = time.time() + 30
while not self._socket and time.time() < retry_until:
try:
self._socket = eventlet.listen(
bind_addr, backlog=backlog, family=family)
except socket.error as err:
if err.args[0] != errno.EADDRINUSE:
raise
eventlet.sleep(0.1)
if not self._socket:
raise RuntimeError(_("Could not bind to %(host)s:%(port)s "
"after trying for 30 seconds") %
{'host': host, 'port': port})
(self._host, self._port) = self._socket.getsockname()[0:2]
LOG.info("%(name)s listening on %(_host)s:%(_port)s",
{'name': self.name, '_host': self._host, '_port': self._port})
def start(self):
"""Start serving a WSGI application.
:returns: None
:raises: manila.exception.InvalidInput
"""
# The server socket object will be closed after server exits,
# but the underlying file descriptor will remain open, and will
# give bad file descriptor error. So duplicating the socket object,
# to keep file descriptor usable.
config.set_middleware_defaults()
dup_socket = self._socket.dup()
netutils.set_tcp_keepalive(
dup_socket,
tcp_keepalive=CONF.tcp_keepalive,
tcp_keepidle=CONF.tcp_keepidle,
tcp_keepalive_interval=CONF.tcp_keepalive_interval,
tcp_keepalive_count=CONF.tcp_keepalive_count
)
if self._use_ssl:
try:
ssl_kwargs = {
'server_side': True,
'certfile': CONF.ssl_cert_file,
'keyfile': CONF.ssl_key_file,
'cert_reqs': ssl.CERT_NONE,
}
if CONF.ssl_ca_file:
ssl_kwargs['ca_certs'] = CONF.ssl_ca_file
ssl_kwargs['cert_reqs'] = ssl.CERT_REQUIRED
dup_socket = ssl.wrap_socket(dup_socket,
**ssl_kwargs)
dup_socket.setsockopt(socket.SOL_SOCKET,
socket.SO_REUSEADDR, 1)
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
("Failed to start %(name)s on %(_host)s:%(_port)s "
"with SSL support."),
{"name": self.name, "_host": self._host,
"_port": self._port}
)
wsgi_kwargs = {
'func': eventlet.wsgi.server,
'sock': dup_socket,
'site': self.app,
'protocol': self._protocol,
'custom_pool': self._pool,
'log': self._logger,
'socket_timeout': self.client_socket_timeout,
'keepalive': CONF.wsgi_keep_alive,
}
self._server = eventlet.spawn(**wsgi_kwargs)
@property
def host(self):
return self._host
@property
def port(self):
return self._port
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("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 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("WSGI server has stopped.")
def reset(self):
"""Reset server greenpool size to default.
:returns: None
"""
self._pool.resize(self.pool_size)
class Request(webob.Request):
pass
class Application(object):
"""Base WSGI application wrapper. Subclasses need to implement __call__."""
@classmethod
def factory(cls, global_config, **local_config):
"""Used for paste app factories in paste.deploy config files.
Any local configuration (that is, values under the [app:APPNAME]
section of the paste config) will be passed into the `__init__` method
as kwargs.
A hypothetical configuration would look like:
[app:wadl]
latest_version = 1.3
paste.app_factory = manila.api.fancy_api:Wadl.factory
which would result in a call to the `Wadl` class as
import manila.api.fancy_api
fancy_api.Wadl(latest_version='1.3')
You could of course re-implement the `factory` method in subclasses,
but using the kwarg passing it shouldn't be necessary.
"""
return cls(**local_config)
def __call__(self, environ, start_response):
r"""Subclasses will probably want to implement __call__ like this:
@webob.dec.wsgify(RequestClass=Request)
def __call__(self, req):
# Any of the following objects work as responses:
# Option 1: simple string
res = 'message\n'
# Option 2: a nicely formatted HTTP exception page
res = exc.HTTPForbidden(detail='Nice try')
# Option 3: a webob Response object (in case you need to play with
# headers, or you want to be treated like an iterable, or or or)
res = Response();
res.app_iter = open('somefile')
# Option 4: any wsgi app to be run next
res = self.application
# Option 5: you can get a Response object for a wsgi app, too, to
# play with headers etc
res = req.get_response(self.application)
# You can then just return your response...
return res
# ... or set req.response and return None.
req.response = res
See the end of http://pythonpaste.org/webob/modules/dec.html
for more info.
"""
raise NotImplementedError(_('You must implement __call__'))
class Middleware(Application):
"""Base WSGI middleware.
These classes require an application to be
initialized that will be called next. By default the middleware will
simply call its wrapped app, or you can override __call__ to customize its
behavior.
"""
@classmethod
def factory(cls, global_config, **local_config):
"""Used for paste app factories in paste.deploy config files.
Any local configuration (that is, values under the [filter:APPNAME]
section of the paste config) will be passed into the `__init__` method
as kwargs.
A hypothetical configuration would look like:
[filter:analytics]
redis_host = 127.0.0.1
paste.filter_factory = manila.api.analytics:Analytics.factory
which would result in a call to the `Analytics` class as
import manila.api.analytics
analytics.Analytics(app_from_paste, redis_host='127.0.0.1')
You could of course re-implement the `factory` method in subclasses,
but using the kwarg passing it shouldn't be necessary.
"""
def _factory(app):
return cls(app, **local_config)
return _factory
def __init__(self, application):
self.application = application
def process_request(self, req):
"""Called on each request.
If this returns None, the next application down the stack will be
executed. If it returns a response then that response will be returned
and execution will stop here.
"""
return None
def process_response(self, response):
"""Do whatever you'd like to the response."""
return response
@webob.dec.wsgify(RequestClass=Request)
def __call__(self, req):
response = self.process_request(req)
if response:
return response
response = req.get_response(self.application)
return self.process_response(response)
class Debug(Middleware):
"""Helper class for debugging a WSGI application.
Can be inserted into any WSGI application chain to get information
about the request and response.
"""
@webob.dec.wsgify(RequestClass=Request)
def __call__(self, req):
print(('*' * 40) + ' REQUEST ENVIRON')
for key, value in req.environ.items():
print(key, '=', value)
print()
resp = req.get_response(self.application)
print(('*' * 40) + ' RESPONSE HEADERS')
for (key, value) in resp.headers.items():
print(key, '=', value)
print()
resp.app_iter = self.print_generator(resp.app_iter)
return resp
@staticmethod
def print_generator(app_iter):
"""Iterator that prints the contents of a wrapper string."""
print(('*' * 40) + ' BODY')
for part in app_iter:
sys.stdout.write(part.decode())
sys.stdout.flush()
yield part
print()
class Router(object):
"""WSGI middleware that maps incoming requests to WSGI apps."""
def __init__(self, mapper):
"""Create a router for the given routes.Mapper.
Each route in `mapper` must specify a 'controller', which is a
WSGI app to call. You'll probably want to specify an 'action' as
well and have your controller be an object that can route
the request to the action-specific method.
Examples:
mapper = routes.Mapper()
sc = ServerController()
# Explicit mapping of one route to a controller+action
mapper.connect(None, '/svrlist', controller=sc, action='list')
# Actions are all implicitly defined
mapper.resource('server', 'servers', controller=sc)
# Pointing to an arbitrary WSGI app. You can specify the
# {path_info:.*} parameter so the target app can be handed just that
# section of the URL.
mapper.connect(None, '/v1.0/{path_info:.*}', controller=BlogApp())
"""
self.map = mapper
self._router = routes.middleware.RoutesMiddleware(self._dispatch,
self.map)
@webob.dec.wsgify(RequestClass=Request)
def __call__(self, req):
"""Route the incoming request to a controller based on self.map.
If no match, return a 404.
"""
return self._router
@staticmethod
@webob.dec.wsgify(RequestClass=Request)
def _dispatch(req):
"""Dispatch the request to the appropriate controller.
Called by self._router after matching the incoming request to a route
and putting the information into req.environ. Either returns 404
or the routed WSGI app's response.
"""
match = req.environ['wsgiorg.routing_args'][1]
if not match:
return webob.exc.HTTPNotFound()
app = match['controller']
return app
class Loader(object):
"""Used to load WSGI applications from paste configurations."""
def __init__(self, config_path=None):
"""Initialize the loader, and attempt to find the config.
:param config_path: Full or relative path to the paste config.
:returns: None
"""
config_path = config_path or CONF.api_paste_config
self.config_path = CONF.find_file(config_path)
if not self.config_path:
raise exception.ConfigNotFound(path=config_path)
def load_app(self, name):
"""Return the paste URLMap wrapped WSGI application.
:param name: Name of the application to load.
:returns: Paste URLMap object wrapping the requested application.
:raises: `manila.exception.PasteAppNotFound`
"""
try:
return deploy.loadapp("config:%s" % self.config_path, name=name)
except LookupError as err:
LOG.error(err)
raise exception.PasteAppNotFound(name=name, path=self.config_path)

0
manila/wsgi/__init__.py Normal file
View File

155
manila/wsgi/common.py Normal file
View File

@ -0,0 +1,155 @@
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2010 OpenStack LLC.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Utility methods for working with WSGI servers."""
import webob.dec
import webob.exc
from manila.i18n import _
class Request(webob.Request):
pass
class Application(object):
"""Base WSGI application wrapper. Subclasses need to implement __call__."""
@classmethod
def factory(cls, global_config, **local_config):
"""Used for paste app factories in paste.deploy config files.
Any local configuration (that is, values under the [app:APPNAME]
section of the paste config) will be passed into the `__init__` method
as kwargs.
A hypothetical configuration would look like:
[app:wadl]
latest_version = 1.3
paste.app_factory = manila.api.fancy_api:Wadl.factory
which would result in a call to the `Wadl` class as
import manila.api.fancy_api
fancy_api.Wadl(latest_version='1.3')
You could of course re-implement the `factory` method in subclasses,
but using the kwarg passing it shouldn't be necessary.
"""
return cls(**local_config)
def __call__(self, environ, start_response):
r"""Subclasses will probably want to implement __call__ like this:
@webob.dec.wsgify(RequestClass=Request)
def __call__(self, req):
# Any of the following objects work as responses:
# Option 1: simple string
res = 'message\n'
# Option 2: a nicely formatted HTTP exception page
res = exc.HTTPForbidden(detail='Nice try')
# Option 3: a webob Response object (in case you need to play with
# headers, or you want to be treated like an iterable, or or or)
res = Response();
res.app_iter = open('somefile')
# Option 4: any wsgi app to be run next
res = self.application
# Option 5: you can get a Response object for a wsgi app, too, to
# play with headers etc
res = req.get_response(self.application)
# You can then just return your response...
return res
# ... or set req.response and return None.
req.response = res
See the end of http://pythonpaste.org/webob/modules/dec.html
for more info.
"""
raise NotImplementedError(_('You must implement __call__'))
class Middleware(Application):
"""Base WSGI middleware.
These classes require an application to be
initialized that will be called next. By default the middleware will
simply call its wrapped app, or you can override __call__ to customize its
behavior.
"""
@classmethod
def factory(cls, global_config, **local_config):
"""Used for paste app factories in paste.deploy config files.
Any local configuration (that is, values under the [filter:APPNAME]
section of the paste config) will be passed into the `__init__` method
as kwargs.
A hypothetical configuration would look like:
[filter:analytics]
redis_host = 127.0.0.1
paste.filter_factory = manila.api.analytics:Analytics.factory
which would result in a call to the `Analytics` class as
import manila.api.analytics
analytics.Analytics(app_from_paste, redis_host='127.0.0.1')
You could of course re-implement the `factory` method in subclasses,
but using the kwarg passing it shouldn't be necessary.
"""
def _factory(app):
return cls(app, **local_config)
return _factory
def __init__(self, application):
self.application = application
def process_request(self, req):
"""Called on each request.
If this returns None, the next application down the stack will be
executed. If it returns a response then that response will be returned
and execution will stop here.
"""
return None
def process_response(self, response):
"""Do whatever you'd like to the response."""
return response
@webob.dec.wsgify(RequestClass=Request)
def __call__(self, req):
response = self.process_request(req)
if response:
return response
response = req.get_response(self.application)
return self.process_response(response)

59
manila/wsgi/eventlet_server.py Normal file
View File

@ -0,0 +1,59 @@
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2010 OpenStack LLC.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Utility methods for working with WSGI servers."""
import socket
from oslo_config import cfg
from oslo_service import wsgi
from oslo_utils import netutils
socket_opts = [
cfg.BoolOpt('tcp_keepalive',
default=True,
help="Sets the value of TCP_KEEPALIVE (True/False) for each "
"server socket."),
cfg.IntOpt('tcp_keepalive_interval',
help="Sets the value of TCP_KEEPINTVL in seconds for each "
"server socket. Not supported on OS X."),
cfg.IntOpt('tcp_keepalive_count',
help="Sets the value of TCP_KEEPCNT for each "
"server socket. Not supported on OS X."),
]
CONF = cfg.CONF
CONF.register_opts(socket_opts)
class Server(wsgi.Server):
"""Server class to manage a WSGI server, serving a WSGI application."""
def _set_socket_opts(self, _socket):
_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# NOTE(praneshp): Call set_tcp_keepalive in oslo to set
# tcp keepalive parameters. Sockets can hang around forever
# without keepalive
netutils.set_tcp_keepalive(
_socket,
self.conf.tcp_keepalive,
self.conf.tcp_keepidle,
self.conf.tcp_keepalive_count,
self.conf.tcp_keepalive_interval,
)
return _socket

39
manila/wsgi/wsgi.py Normal file
View File

@ -0,0 +1,39 @@
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Manila OS API WSGI application."""
import sys
from oslo_config import cfg
from oslo_log import log
from oslo_service import wsgi
from manila import i18n
i18n.enable_lazy()
# Need to register global_opts
from manila.common import config
from manila import rpc
from manila import version
CONF = cfg.CONF
def initialize_application():
log.register_options(CONF)
CONF(sys.argv[1:], project="manila", version=version.version_string())
config.verify_share_protocols()
log.setup(CONF, "manila")
rpc.init(CONF)
return wsgi.Loader(CONF).load_app(name='osapi_share')

8
releasenotes/notes/added-possibility-to-run-manila-api-with-web-servers-that-support-wsgi-apps-cfffe0b789f8670a.yaml Normal file
View File

@ -0,0 +1,8 @@
---
features:
- Manila API service now can be run using web servers that support
WSGI applications.
upgrade:
- Deprecated path 'manila.api.openstack:FaultWrapper' to 'FaultWrapper'
was removed and now only current path is available, which
is 'manila.api.middleware.fault:FaultWrapper'.

2
setup.cfg
View File

@ -34,6 +34,8 @@ console_scripts =
manila-rootwrap = oslo_rootwrap.cmd:main
manila-scheduler = manila.cmd.scheduler:main
manila-share = manila.cmd.share:main
wsgi_scripts =
manila-wsgi = manila.wsgi.wsgi:initialize_application
manila.scheduler.filters =
AvailabilityZoneFilter = manila.scheduler.filters.availability_zone:AvailabilityZoneFilter
CapabilitiesFilter = manila.scheduler.filters.capabilities:CapabilitiesFilter