-# -*- coding: utf-8 -*-
-import requests
-import logging
-
-from pyramid.exceptions import ConfigurationError
-from pyramid_oereb import Config
-from pyramid_oereb.core.renderer.extract.xml_ import Renderer as XmlRenderer
-
-
-log = logging.getLogger(__name__)
-
-
-
-
[docs]
-
class Renderer(XmlRenderer):
-
-
def __call__(self, value, system):
-
"""
-
Implements a subclass of pyramid_oereb.core.renderer.extract.xml_.Renderer to create a print result
-
out of a xml. The xml extract is reformatted to fit the structure of xml2pdf.
-
-
Args:
-
value (tuple): A tuple containing the generated extract record and the params
-
dictionary.
-
system (dict): The available system properties.
-
-
Returns:
-
pyramid.response.Response: The pdf content as received from configured mapfish print instance url.
-
-
Raises:
-
ConfigurationError
-
"""
-
print_config = Config.get('print', {})
-
if not print_config:
-
raise ConfigurationError('No print config section in config file was found.')
-
print_service_url = print_config.get('base_url', '')
-
if not print_service_url:
-
raise ConfigurationError('No print service url ("base_url") was found in the config.')
-
print_service_token = print_config.get('token', '')
-
if not print_service_token:
-
raise ConfigurationError('No print service token ("token") was found in the config.')
-
verify_certificate = print_config.get('verify_certificate', True)
-
-
self.headers = {
-
'token': print_service_token
-
}
-
self.parameters = {
-
'validate': print_config.get('validate', 'false'),
-
'usewms': print_config.get('use_wms', 'false'),
-
}
-
-
log.debug("Parameter webservice is {}".format(value[1]))
-
-
self._request = self.get_request(system)
-
# If language present in request, use that. Otherwise, keep language from base class
-
if 'lang' in self._request.GET:
-
self._language = self._request.GET.get('lang')
-
-
self.parameters['language'] = self._language
-
self.parameters['flavour'] = self._request.params.get('flavour', 'reduced')
-
-
# Based on extract record and webservice parameter, render the extract data as JSON
-
extract_record = value[0]
-
extract_as_xml = self._render(extract_record, value[1])
-
-
response = self.get_response(system)
-
-
if self._request.GET.get('getspec', 'no') != 'no':
-
response.headers['Content-Type'] = 'application/xml; charset=UTF-8'
-
return extract_as_xml
-
-
prepared_extraxt_as_xml = self.prepare_xml(extract_as_xml)
-
print_result = self.request_pdf(
-
print_service_url,
-
prepared_extraxt_as_xml,
-
self.headers,
-
self.parameters,
-
verify_certificate
-
)
-
-
response.status_code = print_result.status_code
-
response.headers = print_result.headers
-
if 'Transfer-Encoding' in response.headers:
-
del response.headers['Transfer-Encoding']
-
if 'Connection' in response.headers:
-
del response.headers['Connection']
-
return print_result
-
-
-
[docs]
-
@staticmethod
-
def request_pdf(url, data_extract, headers, parameters, verify_certificate):
-
"""
-
Posts the print request to the configured print server to return the pdf extract.
-
-
Args:
-
url (str): URl to the print webservice.
-
data_extract (xml): The rendered xml extract.
-
headers (dict): Request headers for print request.
-
parameters (dict): Additional print parameters, such as language or flavour.
-
verify_certificate (boolean): Define if certificate should be verified.
-
-
Returns:
-
file: The pdf file as received from configured mapfish print instance url.
-
-
Raises:
-
Exception: Request failed.
-
"""
-
try:
-
backend_answer = requests.post(
-
url,
-
verify=verify_certificate,
-
headers=headers,
-
files={'file': ('xml', data_extract, 'text/xml')},
-
data=parameters,
-
proxies=Config.get('proxies')
-
)
-
if backend_answer.status_code != requests.codes.ok:
-
log.warning("request_pdf failed for url {}".format(url))
-
log.debug("data extract for failed request was {}".format(data_extract))
-
return backend_answer
-
except Exception as e:
-
log.exception(e)
-
log.warning("request_pdf failed for url {}".format(url))
-
log.debug("data extract for failed request was {}".format(data_extract))
-
raise e
-
-
-
-
[docs]
-
@staticmethod
-
def prepare_xml(extract_as_xml):
-
"""
-
Hook method in order to manipulate xml that is sent to print webservice.
-
-
Args:
-
extract_as_xml(xml): Variable containing the xml content for print werbservice.
-
-
Returns:
-
str: Data of extract.
-
"""
-
return extract_as_xml
-