112 lines
4.2 KiB
Python
112 lines
4.2 KiB
Python
# Copyright (c) 2010-2013 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" In-Memory Object Server for Swift """
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import os
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from swift import gettext_ as _
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from eventlet import Timeout
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from swift.common.bufferedhttp import http_connect
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from swift.common.exceptions import ConnectionTimeout
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from swift.common.http import is_success
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from swift.obj.mem_diskfile import InMemoryFileSystem
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from swift.obj import server
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class ObjectController(server.ObjectController):
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"""
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Implements the WSGI application for the Swift In-Memory Object Server.
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"""
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def setup(self, conf):
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"""
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Nothing specific to do for the in-memory version.
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:param conf: WSGI configuration parameter
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"""
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self._filesystem = InMemoryFileSystem()
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def get_diskfile(self, device, partition, account, container, obj,
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**kwargs):
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"""
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Utility method for instantiating a DiskFile object supporting a given
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REST API.
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An implementation of the object server that wants to use a different
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DiskFile class would simply over-ride this method to provide that
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behavior.
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"""
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return self._filesystem.get_diskfile(account, container, obj, **kwargs)
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def async_update(self, op, account, container, obj, host, partition,
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contdevice, headers_out, objdevice, policy_idx):
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"""
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Sends or saves an async update.
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:param op: operation performed (ex: 'PUT', or 'DELETE')
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:param account: account name for the object
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:param container: container name for the object
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:param obj: object name
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:param host: host that the container is on
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:param partition: partition that the container is on
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:param contdevice: device name that the container is on
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:param headers_out: dictionary of headers to send in the container
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request
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:param objdevice: device name that the object is in
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:param policy_idx: the associated storage policy index
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"""
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headers_out['user-agent'] = 'object-server %s' % os.getpid()
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full_path = '/%s/%s/%s' % (account, container, obj)
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if all([host, partition, contdevice]):
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try:
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with ConnectionTimeout(self.conn_timeout):
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ip, port = host.rsplit(':', 1)
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conn = http_connect(ip, port, contdevice, partition, op,
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full_path, headers_out)
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with Timeout(self.node_timeout):
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response = conn.getresponse()
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response.read()
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if is_success(response.status):
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return
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else:
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self.logger.error(_(
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'ERROR Container update failed: %(status)d '
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'response from %(ip)s:%(port)s/%(dev)s'),
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{'status': response.status, 'ip': ip, 'port': port,
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'dev': contdevice})
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except (Exception, Timeout):
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self.logger.exception(_(
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'ERROR container update failed with '
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'%(ip)s:%(port)s/%(dev)s'),
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{'ip': ip, 'port': port, 'dev': contdevice})
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# FIXME: For now don't handle async updates
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def REPLICATE(self, request):
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"""
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Handle REPLICATE requests for the Swift Object Server. This is used
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by the object replicator to get hashes for directories.
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"""
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pass
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def app_factory(global_conf, **local_conf):
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"""paste.deploy app factory for creating WSGI object server apps"""
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conf = global_conf.copy()
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conf.update(local_conf)
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return ObjectController(conf)
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