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109 lines
3.4 KiB
Ruby
109 lines
3.4 KiB
Ruby
require "uri"
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require_dependency "file_store/base_store"
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require_dependency "file_store/local_store"
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require_dependency "s3_helper"
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require_dependency "file_helper"
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module FileStore
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class S3Store < BaseStore
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TOMBSTONE_PREFIX ||= "tombstone/"
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def initialize(s3_helper=nil)
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@s3_helper = s3_helper || S3Helper.new(s3_bucket, TOMBSTONE_PREFIX)
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end
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def store_upload(file, upload, content_type = nil)
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path = get_path_for_upload(upload)
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store_file(file, path, filename: upload.original_filename, content_type: content_type, cache_locally: true)
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end
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# options
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# - filename
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# - content_type
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# - cache_locally
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def store_file(file, path, opts={})
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filename = opts[:filename].presence
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content_type = opts[:content_type].presence
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# cache file locally when needed
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cache_file(file, File.basename(path)) if opts[:cache_locally]
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# stored uploaded are public by default
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options = { acl: "public-read" }
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# add a "content disposition" header for "attachments"
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options[:content_disposition] = "attachment; filename=\"#{filename}\"" if filename && !FileHelper.is_image?(filename)
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# add a "content type" header when provided
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options[:content_type] = content_type if content_type
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# if this fails, it will throw an exception
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@s3_helper.upload(file, path, options)
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# return the upload url
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"#{absolute_base_url}/#{path}"
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end
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def remove_file(url, path)
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return unless has_been_uploaded?(url)
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# copy the removed file to tombstone
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@s3_helper.remove(path, true)
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end
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def has_been_uploaded?(url)
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return false if url.blank?
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base_hostname = URI.parse(absolute_base_url).hostname
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return true if url[base_hostname]
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return false if SiteSetting.s3_cdn_url.blank?
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cdn_hostname = URI.parse(SiteSetting.s3_cdn_url || "").hostname
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cdn_hostname.presence && url[cdn_hostname]
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end
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def absolute_base_url
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# cf. http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region
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@absolute_base_url ||= if SiteSetting.s3_region == "us-east-1"
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"//#{s3_bucket}.s3.amazonaws.com"
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elsif SiteSetting.s3_region == 'cn-north-1'
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"//#{s3_bucket}.s3.cn-north-1.amazonaws.com.cn"
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else
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"//#{s3_bucket}.s3-#{SiteSetting.s3_region}.amazonaws.com"
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end
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end
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def external?
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true
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end
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def purge_tombstone(grace_period)
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@s3_helper.update_tombstone_lifecycle(grace_period)
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end
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def path_for(upload)
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url = upload.try(:url)
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FileStore::LocalStore.new.path_for(upload) if url && url[/^\/[^\/]/]
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end
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def cdn_url(url)
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return url if SiteSetting.s3_cdn_url.blank?
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schema = url[/^(https?:)?\/\//, 1]
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url.sub("#{schema}#{absolute_base_url}", SiteSetting.s3_cdn_url)
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end
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def cache_avatar(avatar, user_id)
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source = avatar.url.sub(absolute_base_url + "/", "")
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destination = avatar_template(avatar, user_id).sub(absolute_base_url + "/", "")
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@s3_helper.copy(source, destination)
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end
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def avatar_template(avatar, user_id)
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UserAvatar.external_avatar_url(user_id, avatar.upload_id, avatar.width)
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end
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def s3_bucket
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@s3_bucket ||= begin
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raise Discourse::SiteSettingMissing.new("s3_upload_bucket") if SiteSetting.s3_upload_bucket.blank?
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SiteSetting.s3_upload_bucket.downcase
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end
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end
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end
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end
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