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#!/usr/bin/python
# -*- coding: utf8 -*-
# author: wly
# date: 2015-09-06
# see license for license details
import json
import re
import os
import copy
import logging
import sys
LOG = logging.getLogger(__name__)
def object2dict(obj):
# convert object to a dict
dic = {'__class__': obj.__class__.__name__, '__module__': obj.__module__}
dic.update(obj.__dict__)
return dic
def dict2object(dic):
# convert dict to object
if '__class__' in dic:
class_name = dic.pop('__class__')
module_name = dic.pop('__module__')
module = __import__(module_name)
class_ = getattr(module, class_name)
args = dict((key.encode('ascii'), value) for key, value in dic.items()) # get args
inst = class_(**args) # create new instance
else:
inst = dic
return inst
def filter_comments(filename, flags="//"):
result = []
with open(filename, "r") as ifile:
lines = ifile.readlines()
for data in lines:
data = re.sub("%s.*$" % (flags), '', data)
data = re.sub("^\s*$", '', data)
if data:
result.append(data)
LOG.debug(result)
return ''.join(result)
class BaseSettings(object):
def _load(self, fullname):
data = filter_comments(fullname)
LOG.debug(fullname)
LOG.debug(data)
jparams = None
if data:
jparams = json.loads(data)
return jparams
def _sub(self, ldata, rdata):
if isinstance(ldata, list) and isinstance(rdata, list):
data = []
if ldata:
for litem in ldata:
if rdata:
for ritem in rdata:
if isinstance(litem, dict) or isinstance(litem, list):
tmp = self._sub(litem, ritem)
else:
tmp = ritem
if tmp and tmp not in data:
data.append(tmp)
else:
data.append(litem)
else:
data = rdata
elif isinstance(ldata, dict) and isinstance(rdata, dict):
data = {}
rdata_bak = copy.deepcopy(rdata)
for rkey, rvalue in rdata_bak.items():
if rkey not in ldata:
rdata_bak.pop(rkey)
for lkey, lvalue in ldata.items():
if lkey in rdata:
if isinstance(lvalue, dict) or isinstance(lvalue, list):
data[lkey] = self._sub(lvalue, rdata[lkey])
else:
data[lkey] = rdata[lkey]
else:
if rdata_bak:
data[lkey] = lvalue
else:
data = rdata
return data
def _save(self, data, filename):
if os.path.exists(filename):
os.remove(filename)
with open(filename, 'w') as ofile:
content = json.dumps(data, sort_keys=True, indent=4, separators=(',', ':'))
ofile.write(content)
class DefaultSettings(BaseSettings):
def __init__(self, path):
self._default = os.path.join(path, 'default')
self._user = os.path.join(path, 'user')
def load(self, filename):
dfile = os.path.join(self._default, filename)
if os.path.exists(dfile):
ddata = self._load(dfile)
data = ddata
else:
err = "default file is missing : %s" % (dfile)
LOG.error(err)
raise Exception(err)
ufile = os.path.join(self._user, filename)
if os.path.exists(ufile):
udata = self._load(ufile)
if udata:
data = self._sub(ddata, udata)
else:
LOG.info("no user file :%s" % (ufile))
return data
def save(self, data, filename):
ufile = os.path.join(self._user, filename)
self._save(data, ufile)
class SingleSettings(BaseSettings):
def __init__(self, path):
self._path = path
def load(self, filename):
pfile = os.path.join(self._path, filename)
if os.path.exists(pfile):
ddata = self._load(pfile)
data = ddata
else:
err = "settings file is missing : %s" % (pfile)
LOG.error(err)
raise Exception(err)
return data
def save(self, data, filename):
pfile = os.path.join(self._path, filename)
self._save(data, pfile)
SETS_DEFAULT = "Default"
SETS_SINGLE = "Single"
SETTINGS = [SETS_SINGLE, SETS_DEFAULT]
class Settings(object):
def __init__(self, path, filename, mode=SETS_SINGLE):
if mode not in SETTINGS:
raise Exception("error Settings mode : %s" % (mode))
cls_name = mode + "Settings"
thismodule = sys.modules[__name__]
cls = getattr(thismodule, cls_name)
self._settings = cls(path)
self._filename = filename
self._fset = self._settings.load(filename)
self._mset = copy.deepcopy(self._fset)
self._register_func()
def reset(self):
self._fset = self._settings.load(self._filename)
self._mset = copy.deepcopy(self._fset)
@property
def settings(self):
return self._mset
def _setting_file(self, func_name, mset, fset, key, check=None):
def infunc(value):
if hasattr(check, '__call__'):
check(value)
if isinstance(fset, dict):
mset[key] = copy.deepcopy(value)
fset[key] = copy.deepcopy(value)
elif isinstance(fset, list):
del (mset[:])
del (fset[:])
mset.extend(copy.deepcopy(value))
fset.extend(copy.deepcopy(value))
self._settings.save(self._fset, self._filename)
infunc.__name__ = func_name
LOG.debug(self._mset)
LOG.debug(self._fset)
return infunc
def _setting_memory(self, func_name, mset, key, check=None):
def infunc(value):
if hasattr(check, '__call__'):
check(value)
if isinstance(mset, dict):
mset[key] = copy.deepcopy(value)
elif isinstance(mset, list):
for i in range(len(mset)):
mset.pop()
mset.extend(copy.deepcopy(value))
infunc.__name__ = func_name
LOG.debug(self._mset)
LOG.debug(self._fset)
return infunc
def _adding_file(self, func_name, mset, fset, key, check=None):
def infunc(value):
if hasattr(check, '__call__'):
check(value)
if key:
mset[key].append(copy.deepcopy(value))
fset[key].append(copy.deepcopy(value))
else:
mset.append(copy.deepcopy(value))
fset.append(copy.deepcopy(value))
self._settings.save(self._fset, self._filename)
infunc.__name__ = func_name
LOG.debug(self._mset)
LOG.debug(self._fset)
return infunc
def _adding_memory(self, func_name, mset, key, check=None):
def infunc(value):
if hasattr(check, '__call__'):
check(value)
if key:
mset[key].append(copy.deepcopy(value))
else:
mset.append(copy.deepcopy(value))
infunc.__name__ = func_name
LOG.debug(self._mset)
LOG.debug(self._fset)
return infunc
def _register_func(self):
if isinstance(self._fset, dict):
items = set(
self._fset.keys()
)
for item in items:
item = item.encode()
func_name = "set_%s" % item
setattr(self, func_name, self._setting_file(func_name, self._mset, self._fset, item))
func_name = "mset_%s" % item
setattr(self, func_name, self._setting_memory(func_name, self._mset, item))
elif isinstance(self._fset, list):
func_name = "set"
setattr(self, func_name, self._setting_file(func_name, self._mset, self._fset, None))
func_name = "mset"
setattr(self, func_name, self._setting_memory(func_name, self._mset, None))
func_name = "add"
setattr(self, func_name, self._adding_file(func_name, self._mset, self._fset, None))
func_name = "madd"
setattr(self, func_name, self._adding_memory(func_name, self._mset, None))
def unit_test():
from vstf.common.log import setup_logging
setup_logging(level=logging.DEBUG, log_file="/var/log/vstf-settings.log", clevel=logging.INFO)
path = '/etc/vstf'
setting = DefaultSettings(path)
filename = 'reporters.mail.mail-settings'
data = setting.load(filename)
setting.save(data, filename)
LOG.info(type(data))
LOG.info(data)
if __name__ == '__main__':
unit_test()
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