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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from six.moves.urllib.parse import urljoin
from six.moves.urllib.parse import urlparse
from toscaparser.common.exception import ExceptionCollector
from toscaparser.utils.gettextutils import _
try:
# Python 3.x
import urllib.request as urllib
except ImportError:
# Python 2.x
import urllib
class UrlUtils(object):
@staticmethod
def validate_url(path):
"""Validates whether the given path is a URL or not.
If the given path includes a scheme (http, https, ftp, ...) and a net
location (a domain name such as www.github.com) it is validated as a
URL.
"""
parsed = urlparse(path)
return bool(parsed.scheme) and bool(parsed.netloc)
@staticmethod
def join_url(url, relative_path):
"""Builds a new URL from the given URL and the relative path.
Example:
url: http://www.githib.com/openstack/heat
relative_path: heat-translator
- joined: http://www.githib.com/openstack/heat-translator
"""
if not UrlUtils.validate_url(url):
ExceptionCollector.appendException(
ValueError(_('"%s" is not a valid URL.') % url))
return urljoin(url, relative_path)
@staticmethod
def url_accessible(url):
"""Validates whether the given URL is accessible.
Returns true if the get call returns a 200 response code.
Otherwise, returns false.
"""
return urllib.urlopen(url).getcode() == 200
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