pgadmin4/web/pgadmin/utils/versioned_template_loader.py
2018-06-13 15:03:17 +01:00

88 lines
2.8 KiB
Python

##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2018, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################
from flask.templating import DispatchingJinjaLoader
from jinja2 import TemplateNotFound
class VersionedTemplateLoader(DispatchingJinjaLoader):
def get_source(self, environment, template):
specified_version_number, exists = parse_version(template)
if not exists:
return super(VersionedTemplateLoader, self).get_source(
environment, template
)
template_dir, file_name = parse_template(template)
for version_mapping in get_version_mapping(template):
if version_mapping['number'] > specified_version_number:
continue
template_path = '/'.join([
template_dir,
version_mapping['name'],
file_name
])
try:
return super(VersionedTemplateLoader, self).get_source(
environment, template_path
)
except TemplateNotFound:
continue
raise TemplateNotFound(template)
def parse_version(template):
template_path_parts = template.split("#", 3)
if len(template_path_parts) == 1:
return "", False
if len(template_path_parts) == 3:
_, version, _ = template_path_parts
return int(version), True
if len(template_path_parts) == 4:
_, _, version, _ = template_path_parts
return int(version), True
raise TemplateNotFound(template)
def parse_template(template):
template_path_parts = template.split("#", 3)
return template_path_parts[0].strip('\\').strip('/'), \
template_path_parts[-1].strip('\\').strip('/')
def get_version_mapping(template):
template_path_parts = template.split("#", 3)
server_type = None
if len(template_path_parts) == 4:
_, server_type, _, _ = template_path_parts
if server_type == 'gpdb':
return (
{'name': "gpdb_5.0_plus", 'number': 80323},
{'name': "5_plus", 'number': 80323},
{'name': "default", 'number': 0}
)
return ({'name': "11_plus", 'number': 110000},
{'name': "10_plus", 'number': 100000},
{'name': "9.6_plus", 'number': 90600},
{'name': "9.5_plus", 'number': 90500},
{'name': "9.4_plus", 'number': 90400},
{'name': "9.3_plus", 'number': 90300},
{'name': "9.2_plus", 'number': 90200},
{'name': "9.1_plus", 'number': 90100},
{'name': "9.0_plus", 'number': 90000},
{'name': "default", 'number': 0})