# -*- coding: utf-8 -
#
# Copyright 2013 GRNET S.A. All rights reserved.
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import re


class WorkerGlue(object):

    pmap = {}
    worker_id = None
    ioctx_pool = None
    ArchipelagoConfFile = '/etc/archipelago/archipelago.conf'

    @classmethod
    def setmap(cls, pid, index):
        WorkerGlue.pmap[pid] = index
        WorkerGlue.worker_id = index

    @classmethod
    def setupXsegPool(cls, ObjectPool, Segment, Xseg_ctx,
                      cfile=ArchipelagoConfFile, pool_size=8):
        worker_id = WorkerGlue.worker_id
        WorkerGlue.ArchipelagoConfFile = ARCHIPELAGO_CONF_FILE = cfile
        ARCHIPELAGO_SEGMENT_TYPE = 'segdev'
        ARCHIPELAGO_SEGMENT_NAME = 'xsegbd'
        cfg = {}
        bcfg = open(ARCHIPELAGO_CONF_FILE).read()
        cfg['SEGMENT_PORTS'] = re.search('SEGMENT_PORTS\s*=\s*\d+',
                                         bcfg).group(0).split('=')[1]
        cfg['SEGMENT_SIZE'] = re.search('SEGMENT_SIZE\s*=\s*\d+',
                                        bcfg).group(0).split('=')[1]
        ARCHIPELAGO_SEGMENT_PORTS = int(cfg['SEGMENT_PORTS'])
        ARCHIPELAGO_SEGMENT_SIZE = int(cfg['SEGMENT_SIZE'])
        ARCHIPELAGO_SEGMENT_ALIGNMENT = 12

        class XsegPool(ObjectPool):

            def __init__(self):
                super(XsegPool, self).__init__(size=pool_size)
                self.segment = Segment(ARCHIPELAGO_SEGMENT_TYPE,
                                       ARCHIPELAGO_SEGMENT_NAME,
                                       ARCHIPELAGO_SEGMENT_PORTS,
                                       ARCHIPELAGO_SEGMENT_SIZE,
                                       ARCHIPELAGO_SEGMENT_ALIGNMENT)
                self.worker_id = worker_id
                self.cnt = 1

            def _pool_create(self):
                if self.worker_id == 1:
                    ioctx = Xseg_ctx(self.segment, self.worker_id + self.cnt)
                    self.cnt += 1
                    return ioctx
                elif self.worker_id > 1:
                    ioctx = Xseg_ctx(self.segment,
                                     (self.worker_id - 1) * pool_size + 2 +
                                     self.cnt)
                    self.cnt += 1
                    return ioctx
		elif self.worker_id == None:
                    ioctx = Xseg_ctx(self.segment, 200)
                    return ioctx

            def _pool_verify(self, poolobj):
                return True

            def _pool_cleanup(self, poolobj):
                return False

        WorkerGlue.ioctx_pool = XsegPool()