zulip/zephyr/storage.py

91 lines
3.0 KiB
Python

from django.conf import settings
from django.contrib.staticfiles.storage import CachedFilesMixin, StaticFilesStorage
from pipeline.storage import PipelineMixin
import os.path
import ujson
class AddHeaderMixin(object):
def post_process(self, paths, dry_run=False, **kwargs):
if dry_run:
return
with open(settings.STATIC_HEADER_FILE) as header_file:
header = header_file.read().decode(settings.FILE_CHARSET)
# A dictionary of path to tuples of (old_path, new_path,
# processed). The return value of this method is the values
# of this dictionary
ret_dict = {}
for name in paths:
storage, path = paths[name]
# Find the top-level directory for the file
head, _ = os.path.split(path)
top_dir = head
while head != '':
top_dir = head
head, _ = os.path.split(head)
if top_dir != 'min':
ret_dict[path] = (path, path, False)
continue
# Prepend the header
with storage.open(path) as orig_file:
orig_contents = orig_file.read().decode(settings.FILE_CHARSET)
storage.delete(path)
with storage.open(path, 'w') as new_file:
new_file.write(header + orig_contents)
ret_dict[path] = (path, path, True)
super_class = super(AddHeaderMixin, self)
if hasattr(super_class, 'post_process'):
super_ret = super_class.post_process(paths, dry_run, **kwargs)
else:
super_ret = []
# Merge super class's return value with ours
for val in super_ret:
old_path, new_path, processed = val
if processed:
ret_dict[old_path] = val
return ret_dict.itervalues()
class DumpManifestMixin(object):
""" This mixin creates a JSON manifest file in the deployment root
with a dict mapping generated files' base names (like api.js) to their
names with the hash for the most recent version (api.HEX_HASH_HERE.js).
"""
def post_process(self, paths, dry_run=False, **kwargs):
if dry_run:
return
super_class = super(DumpManifestMixin, self)
if hasattr(super_class, 'post_process'):
super_ret = super_class.post_process(paths, dry_run, **kwargs)
else:
super_ret = []
hashed_versions = {} # Latest hashed version of each file.
for old_path, new_path, processed in super_ret:
if old_path[:4] == 'min/':
hashed_versions[old_path] = new_path
manifest_filename = os.path.join(settings.DEPLOY_ROOT,
'minified_assets.json')
with open(manifest_filename, 'w') as manifest_file:
manifest_file.write(ujson.dumps(hashed_versions))
return super_ret
class HumbugStorage(PipelineMixin, AddHeaderMixin, DumpManifestMixin,
CachedFilesMixin, StaticFilesStorage):
pass