root / snf-pithos-backend / pithos / workers / glue.py @ 39b8ea63
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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() |