/usr/lib/python2.7/dist-packages/ZEO/util.py is in python-zodb 1:3.10.7-1build1.
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#
# Copyright (c) 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Utilities for setting up the server environment."""
import os
def parentdir(p, n=1):
"""Return the ancestor of p from n levels up."""
d = p
while n:
d = os.path.dirname(d)
if not d or d == '.':
d = os.getcwd()
n -= 1
return d
class Environment:
"""Determine location of the Data.fs & ZEO_SERVER.pid files.
Pass the argv[0] used to start ZEO to the constructor.
Use the zeo_pid and fs attributes to get the filenames.
"""
def __init__(self, argv0):
v = os.environ.get("INSTANCE_HOME")
if v is None:
# looking for a Zope/var directory assuming that this code
# is installed in Zope/lib/python/ZEO
p = parentdir(argv0, 4)
if os.path.isdir(os.path.join(p, "var")):
v = p
else:
v = os.getcwd()
self.home = v
self.var = os.path.join(v, "var")
if not os.path.isdir(self.var):
self.var = self.home
pid = os.environ.get("ZEO_SERVER_PID")
if pid is None:
pid = os.path.join(self.var, "ZEO_SERVER.pid")
self.zeo_pid = pid
self.fs = os.path.join(self.var, "Data.fs")
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