从 Heroku 上的应用程序将文件上传到 s3 时，我遇到了看似随机的错误。我正在使用 jquery-file-upload 使用 CORS 方法和此代码将图片上传到我的存储桶中的 tmp/ 目录。
def url
temp_url = AWS::S3::S3Object.url_for(
s3_key,
S3_CONFIG['bucket'],
use_ssl: true)
puts temp_url
temp_url
# temp_url.to_s.encode_signs
end
def delete_photo_from_s3
begin
photo = AWS::S3::S3Object.find(s3_key, S3_CONFIG['bucket'])
photo.delete
rescue Exception => e
Rails.logger.error e.message
end
end
private
def s3_key
parent_url = self[:uri]
# If the url is nil, there's no need to look in the bucket for it
return nil if parent_url.nil?
# This will give you the last part of the URL, the 'key' params you need
# but it's URL encoded, so you'll need to decode it
object_key = parent_url.split(/\//)
"#{object_key[3]}/#{object_key[4]}/#{object_key[5]}"
end
从那里我使用carrierwave上传和处理这些图像。但是，有时上传会静默失败，并且我的 s3 存储桶中出现 403 Forbidden 错误。不确定是什么原因造成的。
从那里，我使用 Qu 处理后台作业，使用 remote__url 调用将图像附加到carrierwave。这是我的后台任务：
class PhotoUploader
def self.perform(finding_id, photo_id)
begin
finding = Finding.find(finding_id)
photo = Photo.find(photo_id)
upload = finding.uploads.build
# attached_picture = photo.temp_image_url || photo.url
upload.remote_attachment_url = photo.url
if upload.save!
Rails.logger.debug "#{Time.now}: Photo #{photo_id} saved to finding..."
photo.set(:delete_at => 1.hour.from_now) # UTC, same as GMT (Not local time!)
photos = Photo.where(:processing => true, :delete_at.lte => Time.now.utc) # Query for UTC time, same type as previous line (also not local time!)
finding.unset(:temp_image)
if photos
photos.each do |photo|
photo.destroy
Rails.logger.debug "Photo #{photo.id} - #{photo.uri} destroyed."
end
end
else
raise "Could not save to s3!"
end
rescue Exception => e
Rails.logger.debug "#{Time.now}: PH01 - Error processing photo #{photo_id}, trying again... :: #{e.message}"
retry
end
end
end
这有时有效，但并非总是如此，这真的很奇怪。我最终在我的 s3 日志中得到了一堆这些错误：
fc96aee492e463ff67c0a9835c23c81a09c4c36a53cdf297094ded3a7d02c62f actionlog-development [02/Dec/2012:20:27:18 +0000] 71.205.197.214 - 625CEFB5DB7867A7 REST.GET.OBJECT tmp/4f75d2fb4e484f2ffd000001/apcm_photomix1_0022.jpg "GET /actionlog-development/tmp/4f75d2fb4e484f2ffd000001/apcm_photomix1_0022.jpg ?AWSAccessKeyId=AKIAI_ _ _ZA6A&Expires=1354480332&Signature=4wPc+nT84WEdOuxS6+Ry4iMNkys=HTTP/1.1" 403 SignatureDoesNotMatch 895 - 8 - "-" "Ruby" -
我已经阅读了很多关于这个的内容，似乎人们有时会在签名中有未转义的“+”时遇到这个问题。我不确定这是 Carrierwave、Fog 还是 AWS::S3 问题。
如果您能对此提供任何帮助，将不胜感激。
谢谢。