81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_concurrency import processutils
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from oslo_service import service
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from oslo_service import wsgi
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from ironic.api import app
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from ironic.common import exception
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from ironic.common.i18n import _
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from ironic.conf import CONF
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_MAX_DEFAULT_WORKERS = 4
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class WSGIService(service.ServiceBase):
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"""Provides ability to launch ironic API from wsgi app."""
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def __init__(self, name, use_ssl=False):
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"""Initialize, but do not start the WSGI server.
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:param name: The name of the WSGI server given to the loader.
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:param use_ssl: Wraps the socket in an SSL context if True.
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:returns: None
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"""
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self.name = name
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self.app = app.VersionSelectorApplication()
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self.workers = (
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CONF.api.api_workers
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# NOTE(dtantsur): each worker takes a substantial amount of memory,
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# so we don't want to end up with dozens of them.
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or min(processutils.get_worker_count(), _MAX_DEFAULT_WORKERS)
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)
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if self.workers and self.workers < 1:
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raise exception.ConfigInvalid(
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_("api_workers value of %d is invalid, "
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"must be greater than 0.") % self.workers)
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self.server = wsgi.Server(CONF, name, self.app,
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host=CONF.api.host_ip,
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port=CONF.api.port,
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use_ssl=use_ssl)
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def start(self):
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"""Start serving this service using loaded configuration.
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:returns: None
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"""
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self.server.start()
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def stop(self):
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"""Stop serving this API.
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:returns: None
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"""
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self.server.stop()
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def wait(self):
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"""Wait for the service to stop serving this API.
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:returns: None
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"""
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self.server.wait()
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def reset(self):
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"""Reset server greenpool size to default.
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:returns: None
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"""
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self.server.reset()
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