Django Compressor和S3 OfflineGenerationError

时间：2015-02-05 19:48:21

标签： django heroku amazon-s3 django-compressor

我设法将Django压缩器配置为在本地工作，但我在生产服务器（heroku）上苦苦挣扎。首先，这是我的settings.py 

COMPRESS_PRECOMPILERS = (
    ('text/less', 'lessc {infile} {outfile}'),
)
STATIC_URL = '/static/'

STATIC_ROOT = 'staticfiles'

STATICFILES_DIRS = (os.path.join(BASE_DIR, 'static'),)

STATICFILES_FINDERS = (
                       "django.contrib.staticfiles.finders.FileSystemFinder",
                       "django.contrib.staticfiles.finders.AppDirectoriesFinder",
                       "compressor.finders.CompressorFinder",
                       )
#Amazon S3
AWS_STORAGE_BUCKET_NAME = get_env_variable('AWS_STATIC_BUCKET_NAME')
AWS_ACCESS_KEY_ID = get_env_variable('AWS_ACCESS_KEY_ID')
AWS_SECRET_ACCESS_KEY = get_env_variable('AWS_SECRET_ACCESS_KEY')
DEFAULT_FILE_STORAGE = 's3utils.MediaRootS3BotoStorage'
AWS_S3_FILE_OVERWRITE = False
AWS_MEDIA_BUCKET_NAME = get_env_variable('AWS_MEDIA_BUCKET_NAME')
AWS_STATIC_BUCKET_NAME = get_env_variable('AWS_STATIC_BUCKET_NAME')
STATICFILES_STORAGE = 's3utils.StaticRootS3BotoStorage'
#Compressor
COMPRESS_STORAGE = STATICFILES_STORAGE
COMPRESS_OFFLINE = True
COMPRESS_ROOT = BASE_DIR
COMPRESS_URL = get_env_variable('AWS_BASE_URL')
STATIC_URL = COMPRESS_URL
COMPRESS_ENABLED = True

s3utils.py 

from django.conf import settings
from django.core.files.storage import get_storage_class
from storages.backends.s3boto import S3BotoStorage

MediaRootS3BotoStorage  = lambda: S3BotoStorage(bucket=settings.AWS_MEDIA_BUCKET_NAME)


class StaticRootS3BotoStorage(S3BotoStorage):
    """
    S3 storage backend that saves the files locally, too.
    """
    def __init__(self, *args, **kwargs):
        super(StaticRootS3BotoStorage, self).__init__(*args, **kwargs)
        self.local_storage = get_storage_class(
            "compressor.storage.CompressorFileStorage")()
        self.location='/static/'
        self.bucket_name=settings.AWS_STATIC_BUCKET_NAME

    def save(self, name, content):
        name = super(StaticRootS3BotoStorage, self).save(name, content)
        self.local_storage._save(name, content)
        return name

这是我的base.html模板，项目中的所有其他模板都使用该模板，这是我拥有{% compress %}标记的唯一位置。

{% if debug %}
   <link rel="stylesheet" type="text/less" media="all" href="{% static 'less/master.less' %}" />
   <script src="{% static 'libs/less/js/less.min.js' %}"></script>
{% else %}
   {% compress css %}
      <link rel="stylesheet" type="text/less" media="all" href="{% static 'less/elements.less' %}" />
      <link rel="stylesheet" type="text/less" media="all" href="{% static 'less/responsive-alignment.less' %}" />
   {% endcompress %}
{% endif %}

当我进行部署时，这是输出：

-----> Running run_compress
-----> Compressing static files
       Found 'compress' tags in:
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/email.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/password_change.html
        /app/templates/account/verification_sent.html
        /app/profileApp/templates/profileApp/user-profile.html
        /app/templates/base.html
        /app/templates/socialaccount/connections.html
        /app/templates/account/password_reset_from_key_done.html
        /app/templates/account/signup.html
        /app/templates/account/password_reset.html
        /app/templates/account/verified_email_required.html
        /app/profileApp/templates/profileApp/upload_picture.html
        /app/templates/account/password_change.html
        /app/templates/account/account_inactive.html
        /app/templates/openid/login.html
        /app/templates/account/base.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/base.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/password_reset.html
        /app/picturesApp/templates/picturesApp/home.html
        /app/templates/openid/base.html
        /app/picturesApp/templates/picturesApp/gallery.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/signup_closed.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/openid/login.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/socialaccount/signup.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/verified_email_required.html
        /app/templates/account/email.html
        /app/templates/account/password_set.html
        /app/templates/account/password_reset_done.html
        /app/picturesApp/templates/picturesApp/base/base.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/socialaccount/authentication_error.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/email_confirmed.html
        /app/templates/socialaccount/authentication_error.html
        /app/profileApp/templates/profileApp/base/base.html
        /app/templates/account/signup_closed.html
        /app/templates/socialaccount/login_cancelled.html
        /app/templates/account/email_confirm.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/login.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/password_reset_from_key.html
        /app/templates/account/email_confirmed.html
        /app/profileApp/templates/profileApp/account-info.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/password_set.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/signup.html
        /app/templates/account/logout.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/socialaccount/connections.html
        /app/templates/account/login.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/socialaccount/base.html
        /app/templates/account/password_reset_from_key.html
        /app/templates/socialaccount/signup.html
        /app/templates/socialaccount/base.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/password_reset_done.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/socialaccount/login_cancelled.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/openid/base.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/password_reset_from_key_done.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/logout.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/email_confirm.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/account_inactive.html
        /app/.heroku/python/lib/python2.7/site-packages/allauth/templates/account/verification_sent.html
       Compressing... done
       Compressed 56 block(s) from 56 template(s).

然后，如果我查看S3存储桶，在CACHE文件夹中，我有manifest.json这个内容：

{
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  "5d2dfc90970dbde0ef4f96661f8ae5d8": "<link rel=\"stylesheet\" href=\"https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=lruWG1Ym3GgKbNF91hAV1Bkq8%2BE%3D&Expires=1423168564&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA\" type=\"text/css\" media=\"all\" />", 
  "443afda7fbc46fef06f151b8cf7bf3c8": "<link rel=\"stylesheet\" href=\"https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=LjEhp8nPsjWwSETVJeL0jtRFAfk%3D&Expires=1423168565&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA\" type=\"text/css\" media=\"all\" />", 
  "e1ebba561b757875b9b674b5a9399445": "<link rel=\"stylesheet\" href=\"https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=ofqkHRM%2FWj%2FF6bVar1Lp5blmXXw%3D&Expires=1423168566&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA\" type=\"text/css\" media=\"all\" />", 
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  "bf20d24e464e7b53e50f3dce8a25b332": "<link rel=\"stylesheet\" href=\"https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=Bme7ovtFpQLAK0S1k49C4renl3c%3D&Expires=1423168608&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA\" type=\"text/css\" media=\"all\" />", 
  "038b769ab8a80977e2ef4c9703a3d902": "<link rel=\"stylesheet\" href=\"https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=e6ry3Jfj4Hvi1m%2FKWNq%2BO4dxba0%3D&Expires=1423168609&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA\" type=\"text/css\" media=\"all\" />", 
  "c4a884efe935ed4106e0940b5146c9f5": "<link rel=\"stylesheet\" href=\"https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=CSMObc9kd7n9bt2DKCmNFVZUVh0%3D&Expires=1423168611&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA\" type=\"text/css\" media=\"all\" />", 
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}

在css文件夹中，有56个.css文件，所有文件都包含相同的内容，其中包含了应有的内容。

当我尝试加载页面时，我遇到了500错误，并且在日志中：

OfflineGenerationError: You have offline compression enabled but key "82eb0d398802e74ae1d897a61e1c5b9b" is missing from offline manifest. You may need to run "python manage.py compress".

我不明白的第一件事是它为什么会生成56个不同的.css文件，内容完全相同，这是正常的吗？

我一直在阅读很多关于此的问题，但我还没有找到任何解决方案。有人可以帮忙吗？

感谢。

1 个答案:

答案 0 :(得分：0)

在我敲了三天之后（我必须在此之前修复压缩机的其他问题），我发现了问题。这是S3中生成的.css文件的URL：

https://staging-ekiphos-statics.s3.amazonaws.com/static/CACHE/css/048c299ffb55.css?Signature=pVKMqQHS%2BiZ9SIIgu2c1o1dhvpA%3D&Expires=1423168574&AWSAccessKeyId=AKIAI7KZTNYNOMIHBWKA

这个网址无法访问，这就是它生成56个不同的.css文件的原因。通过添加以下行，我阻止了S3 boto在url中添加签名和expirity信息：

AWS_QUERYSTRING_AUTH = False

执行此操作时，manifest.json只包含一个条目，并且只创建一个可访问的.css文件。

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