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refactor upload service

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This commit is contained in:
Albert Yi
2018-07-06 11:52:43 -07:00
parent a0205be8b5
commit ac28c92fbd
5 changed files with 533 additions and 523 deletions
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app/logical/upload_service/utils.rb Normal file
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class UploadService
module Utils
def self.file_header_to_file_ext(file)
case File.read(file.path, 16)
when /^\xff\xd8/n
"jpg"
when /^GIF87a/, /^GIF89a/
"gif"
when /^\x89PNG\r\n\x1a\n/n
"png"
when /^CWS/, /^FWS/, /^ZWS/
"swf"
when /^\x1a\x45\xdf\xa3/n
"webm"
when /^....ftyp(?:isom|3gp5|mp42|MSNV|avc1)/
"mp4"
when /^PK\x03\x04/
"zip"
else
"bin"
end
end
def self.delete_file(md5, file_ext, upload_id = nil)
if Post.where(md5: md5).exists?
if upload_id
CurrentUser.as_system do
Upload.find(upload_id).update(status: "completed")
end
end
return
end
if upload_id
CurrentUser.as_system do
Upload.find(upload_id).update(status: "preprocessed + deleted")
end
end
Danbooru.config.storage_manager.delete_file(nil, md5, file_ext, :original)
Danbooru.config.storage_manager.delete_file(nil, md5, file_ext, :large)
Danbooru.config.storage_manager.delete_file(nil, md5, file_ext, :preview)
Danbooru.config.backup_storage_manager.delete_file(nil, md5, file_ext, :original)
Danbooru.config.backup_storage_manager.delete_file(nil, md5, file_ext, :large)
Danbooru.config.backup_storage_manager.delete_file(nil, md5, file_ext, :preview)
end
def self.calculate_ugoira_dimensions(source_path)
folder = Zip::File.new(source_path)
Tempfile.open("ugoira-dim-") do |tempfile|
folder.first.extract(tempfile.path) { true }
image_size = ImageSpec.new(tempfile.path)
return [image_size.width, image_size.height]
end
end
def self.calculate_dimensions(upload, file)
if upload.is_video?
video = FFMPEG::Movie.new(file.path)
yield(video.width, video.height)
elsif upload.is_ugoira?
w, h = calculate_ugoira_dimensions(file.path)
yield(w, h)
else
image_size = ImageSpec.new(file.path)
yield(image_size.width, image_size.height)
end
end
def self.distribute_files(file, record, type)
# need to do this for hybrid storage manager
post = Post.new
post.md5 = record.md5
post.file_ext = record.file_ext
[Danbooru.config.storage_manager, Danbooru.config.backup_storage_manager].each do |sm|
sm.store_file(file, post, type)
end
end
def self.is_downloadable?(source)
source =~ /^https?:\/\//
end
def self.generate_resizes(file, upload)
if upload.is_video?
video = FFMPEG::Movie.new(file.path)
crop_file = generate_video_crop_for(video, Danbooru.config.small_image_width)
preview_file = generate_video_preview_for(video, Danbooru.config.small_image_width, Danbooru.config.small_image_width)
elsif upload.is_ugoira?
preview_file = PixivUgoiraConverter.generate_preview(file)
crop_file = PixivUgoiraConverter.generate_crop(file)
sample_file = PixivUgoiraConverter.generate_webm(file, upload.context["ugoira"]["frame_data"])
elsif upload.is_image?
preview_file = DanbooruImageResizer.resize(file, Danbooru.config.small_image_width, Danbooru.config.small_image_width, 85)
crop_file = DanbooruImageResizer.crop(file, Danbooru.config.small_image_width, Danbooru.config.small_image_width, 85)
if upload.image_width > Danbooru.config.large_image_width
sample_file = DanbooruImageResizer.resize(file, Danbooru.config.large_image_width, upload.image_height, 90)
end
end
[preview_file, crop_file, sample_file]
end
def self.generate_video_crop_for(video, width)
vp = Tempfile.new(["video-preview", ".jpg"], binmode: true)
video.screenshot(vp.path, {:seek_time => 0, :resolution => "#{video.width}x#{video.height}"})
crop = DanbooruImageResizer.crop(vp, width, width, 85)
vp.close
return crop
end
def self.generate_video_preview_for(video, width, height)
dimension_ratio = video.width.to_f / video.height
if dimension_ratio > 1
height = (width / dimension_ratio).to_i
else
width = (height * dimension_ratio).to_i
end
output_file = Tempfile.new(["video-preview", ".jpg"], binmode: true)
video.screenshot(output_file.path, {:seek_time => 0, :resolution => "#{width}x#{height}"})
output_file
end
def self.process_file(upload, file)
upload.file = file
upload.file_ext = Utils.file_header_to_file_ext(file)
upload.file_size = file.size
upload.md5 = Digest::MD5.file(file.path).hexdigest
Utils.calculate_dimensions(upload, file) do |width, height|
upload.image_width = width
upload.image_height = height
end
upload.tag_string = "#{upload.tag_string} #{Utils.automatic_tags(upload, file)}"
preview_file, crop_file, sample_file = Utils.generate_resizes(file, upload)
begin
Utils.distribute_files(file, upload, :original)
Utils.distribute_files(sample_file, upload, :large) if sample_file.present?
Utils.distribute_files(preview_file, upload, :preview) if preview_file.present?
Utils.distribute_files(crop_file, upload, :crop) if crop_file.present?
ensure
preview_file.try(:close!)
crop_file.try(:close!)
sample_file.try(:close!)
end
# in case this upload never finishes processing, we need to delete the
# distributed files in the future
Danbooru.config.other_server_hosts.each do |host|
UploadService::Utils.delay(priority: -1, queue: host, run_at: 30.minutes.from_now).delete_file(upload.md5, upload.file_ext, upload.id)
end
end
# these methods are only really used during upload processing even
# though logically they belong on upload. post can rely on the
# automatic tag that's added.
def self.is_animated_gif?(upload, file)
return false if upload.file_ext != "gif"
# Check whether the gif has multiple frames by trying to load the second frame.
result = Vips::Image.gifload(file.path, page: 1) rescue $ERROR_INFO
if result.is_a?(Vips::Image)
true
elsif result.is_a?(Vips::Error) && result.message =~ /too few frames in GIF file/
false
else
raise result
end
end
def self.is_animated_png?(upload, file)
upload.file_ext == "png" && APNGInspector.new(file.path).inspect!.animated?
end
def self.is_video_with_audio?(upload, file)
video = FFMPEG::Movie.new(file.path)
upload.is_video? && video.audio_channels.present?
end
def self.automatic_tags(upload, file)
return "" unless Danbooru.config.enable_dimension_autotagging
tags = []
tags << "video_with_sound" if is_video_with_audio?(upload, file)
tags << "animated_gif" if is_animated_gif?(upload, file)
tags << "animated_png" if is_animated_png?(upload, file)
tags.join(" ")
end
def self.download_from_source(source, referer_url: nil)
download = Downloads::File.new(source, referer_url: referer_url)
file = download.download!
context = {
downloaded_source: download.downloaded_source,
source: download.source
}
if download.data[:is_ugoira]
context[:ugoira] = {
frame_data: download.data[:ugoira_frame_data],
content_type: download.data[:ugoira_content_type]
}
end
yield(context)
return file
end
def self.download_for_upload(source, upload)
file = download_from_source(source, referer_url: upload.referer_url) do |context|
upload.downloaded_source = context[:downloaded_source]
upload.source = context[:source]
if context[:ugoira]
upload.context = { ugoira: context[:ugoira] }
end
end
return file
end
end
end