Revision 39b8ea63
b/snf-pithos-backend/pithos/workers/glue.py | ||
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# -*- coding: utf-8 - |
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# |
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# Copyright 2013 GRNET S.A. All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or |
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# without modification, are permitted provided that the following |
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# conditions are met: |
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# |
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# 1. Redistributions of source code must retain the above |
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# copyright notice, this list of conditions and the following |
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# disclaimer. |
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# |
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# 2. Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following |
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# disclaimer in the documentation and/or other materials |
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# provided with the distribution. |
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# |
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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# POSSIBILITY OF SUCH DAMAGE. |
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# |
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# The views and conclusions contained in the software and |
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# documentation are those of the authors and should not be |
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# interpreted as representing official policies, either expressed |
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# or implied, of GRNET S.A. |
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import re |
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class WorkerGlue(object): |
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pmap = {} |
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worker_id = None |
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ioctx_pool = None |
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@classmethod |
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def setmap(cls, pid, index): |
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WorkerGlue.pmap[pid] = index |
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WorkerGlue.worker_id = index |
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@classmethod |
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def setupXsegPool(cls, ObjectPool, Segment, Xseg_ctx, cfile, pool_size=8): |
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worker_id = WorkerGlue.worker_id |
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ARCHIPELAGO_CONF_FILE = cfile |
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ARCHIPELAGO_SEGMENT_TYPE = 'segdev' |
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ARCHIPELAGO_SEGMENT_NAME = 'xsegbd' |
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cfg = {} |
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bcfg = open(ARCHIPELAGO_CONF_FILE).read() |
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cfg['SEGMENT_PORTS'] = re.search('SEGMENT_PORTS\s*=\s*\d+', |
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bcfg).group(0).split('=')[1] |
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cfg['SEGMENT_SIZE'] = re.search('SEGMENT_SIZE\s*=\s*\d+', |
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bcfg).group(0).split('=')[1] |
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ARCHIPELAGO_SEGMENT_PORTS = int(cfg['SEGMENT_PORTS']) |
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ARCHIPELAGO_SEGMENT_SIZE = int(cfg['SEGMENT_SIZE']) |
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ARCHIPELAGO_SEGMENT_ALIGNMENT = 12 |
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class XsegPool(ObjectPool): |
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def __init__(self): |
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super(XsegPool, self).__init__(size=pool_size) |
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self.segment = Segment(ARCHIPELAGO_SEGMENT_TYPE, |
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ARCHIPELAGO_SEGMENT_NAME, |
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ARCHIPELAGO_SEGMENT_PORTS, |
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ARCHIPELAGO_SEGMENT_SIZE, |
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ARCHIPELAGO_SEGMENT_ALIGNMENT) |
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self.worker_id = worker_id |
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self.cnt = 1 |
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def _pool_create(self): |
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if self.worker_id == 1: |
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ioctx = Xseg_ctx(self.segment, self.worker_id + self.cnt) |
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self.cnt += 1 |
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return ioctx |
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else: |
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ioctx = Xseg_ctx(self.segment, |
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(self.worker_id - 1) * pool_size + 2 + |
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self.cnt) |
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self.cnt += 1 |
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return ioctx |
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def _pool_verify(self, poolobj): |
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return True |
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def _pool_cleanup(self, poolobj): |
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return False |
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WorkerGlue.ioctx_pool = XsegPool() |
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