问题描述
# WORKS
AWS_S3_CUSTOM_DOMAIN = 'example.fra1.digitaloceanspaces.com/{}'.format(AWS_STORAGE_BUCKET_NAME)
# DOES NOT WORK ⁉️
AWS_S3_CUSTOM_DOMAIN = 'cdn.example.com/{}'.format(AWS_STORAGE_BUCKET_NAME)
CommandError: An error occurred during rendering /home/<user>/<app>/templates/public/index.html: 'https://cdn.example.com/storage/static/node_modules/nouiSlider/distribute/nouiSlider.min.css' isn't accessible via COMPRESS_URL ('https://example.fra1.digitaloceanspaces.com/storage/static/') and can't be compressed
如果我转到任何一个 url,该文件都可以访问,因此 CDN 可能没问题,URL 定义正确,CORS 也很好。
同样没有 django-compressor
子域交付一直工作正常,让我相信问题不在于 django-storages
我已经尝试了几个小时,最终不得不通过将 AWS_S3_CUSTOM_DOMAIN
设置为与 AWS_S3_ENDPOINT_URL
相同来进行临时修复。然而这并不理想。
请参阅下面的实现。
/requirements.txt
Django==3.1.4
...
boto3~=1.16.46
botocore~=1.19.46
s3transfer~=0.3.3
...
django-storages~=1.11.1
django-compressor~=2.4
/config/settings.py
...
# ==========================================================
# DJANGO-STORAGES
# ==========================================================
if LOCALHOST_MODE:
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR,'media')
STATIC_URL = '/static/'
STATICFILES_Dirs = [os.path.join(BASE_DIR,'static/'),]
else:
AWS_ACCESS_KEY_ID = os.getenv("AWS_ACCESS_KEY_ID")
AWS_SECRET_ACCESS_KEY = os.getenv("AWS_SECRET_ACCESS_KEY")
AWS_STORAGE_BUCKET_NAME = 'storage'
AWS_S3_ENDPOINT_URL = 'https://example.fra1.digitaloceanspaces.com'
# WORKS ⚠️
AWS_S3_CUSTOM_DOMAIN = 'example.fra1.digitaloceanspaces.com/{}'.format(AWS_STORAGE_BUCKET_NAME)
# DOES NOT WORK ⁉️
AWS_S3_CUSTOM_DOMAIN = 'cdn.example.com/{}'.format(AWS_STORAGE_BUCKET_NAME)
AWS_S3_OBJECT_ParaMETERS = {
'CacheControl': 'max-age=86400',}
AWS_LOCATION = 'static'
AWS_DEFAULT_ACL = 'public-read'
STATICFILES_Dirs = (os.path.join(BASE_DIR,"static"),)
STATIC_URL = '{}/{}/{}/'.format(AWS_S3_ENDPOINT_URL,AWS_STORAGE_BUCKET_NAME,AWS_LOCATION)
STATICFILES_STORAGE = 'storage_backends.CachedS3Boto3Storage'
MEDIA_ROOT = os.path.join(BASE_DIR,"media")
MEDIA_URL = '{}/{}/{}/'.format(AWS_S3_ENDPOINT_URL,'media')
DEFAULT_FILE_STORAGE = 'storage_backends.MediaStorage'
# ==========================================================
# DJANGO-COMPRESSOR
# ==========================================================
COMPRESS_ENABLED = True
STATIC_DEPS = True
COMPRESS_ROOT = os.path.join(BASE_DIR,"static")
COMPRESS_FILTERS = {
'css': ['compressor.filters.css_default.CssAbsoluteFilter','compressor.filters.cssmin.rCSSMinFilter'],'js': ['compressor.filters.jsmin.JSMinFilter']
}
if LOCALHOST_MODE:
COMPRESS_OFFLINE = False
else:
COMPRESS_OFFLINE = True
COMPRESS_STORAGE = STATICFILES_STORAGE
COMPRESS_URL = STATIC_URL
STATICFILES_FINDERS = [
'django.contrib.staticfiles.finders.FileSystemFinder','django.contrib.staticfiles.finders.AppDirectoriesFinder','compressor.finders.CompressorFinder',]
...
/storage_backends.py
from django.core.files.storage import get_storage_class
from storages.backends.s3boto3 import S3Boto3Storage
from config import settings
class MediaStorage(S3Boto3Storage):
bucket_name = settings.AWS_STORAGE_BUCKET_NAME
location = 'media'
class CachedS3Boto3Storage(S3Boto3Storage):
def __init__(self,*args,**kwargs):
super(CachedS3Boto3Storage,self).__init__(*args,**kwargs)
self.local_storage = get_storage_class(
"compressor.storage.CompressorFileStorage")()
def save(self,name,content):
self.local_storage._save(name,content)
super(CachedS3Boto3Storage,self).save(name,self.local_storage._open(name))
return name
解决方法
如何调试这个错误:
查看引发错误的位置(在 django-compressor.compressor.base
中),我们发现以下内容:
def get_basename(self,url):
try:
base_url = self.storage.base_url
except AttributeError:
base_url = settings.COMPRESS_URL
base_url = str(base_url)
if not url.startswith(base_url):
raise UncompressableFileError(
"'%s' isn't accessible via "
"COMPRESS_URL ('%s') and can't be "
"compressed" % (url,base_url)
)
查看您的设置:
- 您的
COMPRESS_URL
设置为等于STATIC_URL
, - 又等于
'{}/{}/{}/'.format(AWS_S3_ENDPOINT_URL,AWS_STORAGE_BUCKET_NAME,AWS_LOCATION)
。 - 这是
https://example.fra1.digitaloceanspaces.com/storage/static/
- 但是传入的 url 是
https://cdn.example.com/storage/static/...
这是问题的路径。
发生了什么??
-
COMPRESS_URL
控制将从中读取链接文件并写入压缩文件的 URL。 - 当您的 CSS 或 JS 文件在某处带有
link
、rel
或src
属性时,django-compressor
会调用get_basename
。 -
get_basename
获取静态文件的完整路径(例如“/static/css/style.css”)和 返回删除了存储基本 URL 的路径(例如“css/style.css”)。 - 由于某些
link
、rel
或src
属性的基本路径不是以COMPRESS_URL
开头(它期望是基本网址),因此它可以不会删除它,因此会引发错误。
如何解决这个问题
如果不查看整个项目,很难确切知道出了什么问题,但以下内容可能会有所帮助:
-
如果您更新了
AWS_S3_ENDPOINT_URL
以匹配您的AWS_S3_CUSTOM_DOMAIN
。这反过来会更新您的STATIC_URL
(我怀疑这会影响您文件中的文件名),并且还会更新您的COMPRESS_URL
。我认为这可能会解决它。 -
或者,只需更新
COMPRESS_URL
以使用正确的网址(尽管我认为这需要将STATIC_URL
与您当前的设置相匹配)。 -
如果正在压缩的文件中的任何(
link
、rel
或src
)网址是硬编码的,则它们需要更新以匹配您的 {{1} }.