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# Copyright 2016 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=
import os
import urlparse
import requests
import yaml
variables_filename = os.environ.get('VARIABLES', 'vars.yaml')
class YarnHelper(object):
def __init__(self):
self._env = dict(os.environ)
self._next_match = 1
self._variables = None # None means not loaded, otherwise dict
def set_environment(self, env):
self._env = dict(env)
def get_next_match(self):
name = 'MATCH_{}'.format(self._next_match)
if name not in self._env:
raise Error('no next match')
self._next_match += 1
return self._env[name]
def get_variable(self, name):
if self._variables is None:
self._variables = self._load_variables()
if name not in self._variables:
raise Error('no variable {}'.format(name))
return self._variables[name]
def _load_variables(self):
if os.path.exists(variables_filename):
with open(variables_filename, 'r') as f:
return yaml.safe_load(f)
return {}
def set_variable(self, name, value):
if self._variables is None:
self._variables = {}
self._variables[name] = value
self._save_variables(self._variables)
def _save_variables(self, variables):
with open(variables_filename, 'w') as f:
yaml.safe_dump(variables, f)
def construct_aliased_http_request(
self, server, method, url, data=None, headers=None):
if headers is None:
headers = {}
parts = list(urlparse.urlparse(url))
headers['Host'] = parts[1]
parts[1] = server
aliased_url = urlparse.urlunparse(parts)
r = requests.Request(method, aliased_url, data=data, headers=headers)
return r.prepare()
def http_get(self, server, url): # pragma: no cover
r = self.construct_aliased_http_request(server, 'GET', url)
s = requests.Session()
resp = s.send(r)
return resp.status_code, resp.content
def assertEqual(self, a, b):
if a != b:
raise Error('assertion {!r} == {!r} failed'.format(a, b))
def assertNotEqual(self, a, b):
if a == b:
raise Error('assertion {!r} != {!r} failed'.format(a, b))
class Error(Exception):
pass
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