diff options
Diffstat (limited to 'activestorage/app/models')
6 files changed, 150 insertions, 118 deletions
diff --git a/activestorage/app/models/active_storage/attachment.rb b/activestorage/app/models/active_storage/attachment.rb index c59877a9a5..4bdd1c0224 100644 --- a/activestorage/app/models/active_storage/attachment.rb +++ b/activestorage/app/models/active_storage/attachment.rb @@ -15,17 +15,18 @@ class ActiveStorage::Attachment < ActiveRecord::Base delegate_missing_to :blob after_create_commit :analyze_blob_later, :identify_blob + after_destroy_commit :purge_dependent_blob_later - # Synchronously purges the blob (deletes it from the configured service) and destroys the attachment. + # Synchronously deletes the attachment and {purges the blob}[rdoc-ref:ActiveStorage::Blob#purge]. def purge - blob.purge - destroy + delete + blob&.purge end - # Destroys the attachment and asynchronously purges the blob (deletes it from the configured service). + # Deletes the attachment and {enqueues a background job}[rdoc-ref:ActiveStorage::Blob#purge_later] to purge the blob. def purge_later - blob.purge_later - destroy + delete + blob&.purge_later end private @@ -36,4 +37,13 @@ class ActiveStorage::Attachment < ActiveRecord::Base def analyze_blob_later blob.analyze_later unless blob.analyzed? end + + def purge_dependent_blob_later + blob&.purge_later if dependent == :purge_later + end + + + def dependent + record.attachment_reflections[name]&.options[:dependent] + end end diff --git a/activestorage/app/models/active_storage/blob.rb b/activestorage/app/models/active_storage/blob.rb index 0cd4ad8128..e7f2615b0f 100644 --- a/activestorage/app/models/active_storage/blob.rb +++ b/activestorage/app/models/active_storage/blob.rb @@ -1,5 +1,7 @@ # frozen_string_literal: true +require "active_storage/downloader" + # A blob is a record that contains the metadata about a file and a key for where that file resides on the service. # Blobs can be created in two ways: # @@ -44,21 +46,25 @@ class ActiveStorage::Blob < ActiveRecord::Base end # Returns a new, unsaved blob instance after the +io+ has been uploaded to the service. - def build_after_upload(io:, filename:, content_type: nil, metadata: nil) - new.tap do |blob| - blob.filename = filename - blob.content_type = content_type - blob.metadata = metadata + # When providing a content type, pass <tt>identify: false</tt> to bypass automatic content type inference. + def build_after_upload(io:, filename:, content_type: nil, metadata: nil, identify: true) + new(filename: filename, content_type: content_type, metadata: metadata).tap do |blob| + blob.upload(io, identify: identify) + end + end - blob.upload io + def build_after_unfurling(io:, filename:, content_type: nil, metadata: nil, identify: true) #:nodoc: + new(filename: filename, content_type: content_type, metadata: metadata).tap do |blob| + blob.unfurl(io, identify: identify) end end # Returns a saved blob instance after the +io+ has been uploaded to the service. Note, the blob is first built, # then the +io+ is uploaded, then the blob is saved. This is done this way to avoid uploading (which may take # time), while having an open database transaction. - def create_after_upload!(io:, filename:, content_type: nil, metadata: nil) - build_after_upload(io: io, filename: filename, content_type: content_type, metadata: metadata).tap(&:save!) + # When providing a content type, pass <tt>identify: false</tt> to bypass automatic content type inference. + def create_after_upload!(io:, filename:, content_type: nil, metadata: nil, identify: true) + build_after_upload(io: io, filename: filename, content_type: content_type, metadata: metadata, identify: identify).tap(&:save!) end # Returns a saved blob _without_ uploading a file to the service. This blob will point to a key where there is @@ -117,7 +123,7 @@ class ActiveStorage::Blob < ActiveRecord::Base # with users. Instead, the +service_url+ should only be exposed as a redirect from a stable, possibly authenticated URL. # Hiding the +service_url+ behind a redirect also gives you the power to change services without updating all URLs. And # it allows permanent URLs that redirect to the +service_url+ to be cached in the view. - def service_url(expires_in: service.url_expires_in, disposition: :inline, filename: nil, **options) + def service_url(expires_in: ActiveStorage.service_urls_expire_in, disposition: :inline, filename: nil, **options) filename = ActiveStorage::Filename.wrap(filename || self.filename) service.url key, expires_in: expires_in, filename: filename, content_type: content_type, @@ -126,7 +132,7 @@ class ActiveStorage::Blob < ActiveRecord::Base # Returns a URL that can be used to directly upload a file for this blob on the service. This URL is intended to be # short-lived for security and only generated on-demand by the client-side JavaScript responsible for doing the uploading. - def service_url_for_direct_upload(expires_in: service.url_expires_in) + def service_url_for_direct_upload(expires_in: ActiveStorage.service_urls_expire_in) service.url_for_direct_upload key, expires_in: expires_in, content_type: content_type, content_length: byte_size, checksum: checksum end @@ -142,17 +148,25 @@ class ActiveStorage::Blob < ActiveRecord::Base # # Prior to uploading, we compute the checksum, which is sent to the service for transit integrity validation. If the # checksum does not match what the service receives, an exception will be raised. We also measure the size of the +io+ - # and store that in +byte_size+ on the blob record. + # and store that in +byte_size+ on the blob record. The content type is automatically extracted from the +io+ unless + # you specify a +content_type+ and pass +identify+ as false. # # Normally, you do not have to call this method directly at all. Use the factory class methods of +build_after_upload+ # and +create_after_upload!+. - def upload(io) + def upload(io, identify: true) + unfurl io, identify: identify + upload_without_unfurling io + end + + def unfurl(io, identify: true) #:nodoc: self.checksum = compute_checksum_in_chunks(io) - self.content_type = extract_content_type(io) + self.content_type = extract_content_type(io) if content_type.nil? || identify self.byte_size = io.size self.identified = true + end - service.upload(key, io, checksum: checksum) + def upload_without_unfurling(io) #:nodoc: + service.upload key, io, checksum: checksum end # Downloads the file associated with this blob. If no block is given, the entire file is read into memory and returned. @@ -161,9 +175,26 @@ class ActiveStorage::Blob < ActiveRecord::Base service.download key, &block end + # Downloads the blob to a tempfile on disk. Yields the tempfile. + # + # The tempfile's name is prefixed with +ActiveStorage-+ and the blob's ID. Its extension matches that of the blob. + # + # By default, the tempfile is created in <tt>Dir.tmpdir</tt>. Pass +tempdir:+ to create it in a different directory: + # + # blob.open(tempdir: "/path/to/tmp") do |file| + # # ... + # end + # + # The tempfile is automatically closed and unlinked after the given block is executed. + # + # Raises ActiveStorage::IntegrityError if the downloaded data does not match the blob's checksum. + def open(tempdir: nil, &block) + ActiveStorage::Downloader.new(self, tempdir: tempdir).download_blob_to_tempfile(&block) + end - # Deletes the file on the service that's associated with this blob. This should only be done if the blob is going to be - # deleted as well or you will essentially have a dead reference. It's recommended to use the +#purge+ and +#purge_later+ + + # Deletes the files on the service associated with the blob. This should only be done if the blob is going to be + # deleted as well or you will essentially have a dead reference. It's recommended to use #purge and #purge_later # methods in most circumstances. def delete service.delete(key) @@ -172,14 +203,15 @@ class ActiveStorage::Blob < ActiveRecord::Base # Deletes the file on the service and then destroys the blob record. This is the recommended way to dispose of unwanted # blobs. Note, though, that deleting the file off the service will initiate a HTTP connection to the service, which may - # be slow or prevented, so you should not use this method inside a transaction or in callbacks. Use +#purge_later+ instead. + # be slow or prevented, so you should not use this method inside a transaction or in callbacks. Use #purge_later instead. def purge - delete destroy + delete + rescue ActiveRecord::InvalidForeignKey end - # Enqueues an ActiveStorage::PurgeJob job that'll call +purge+. This is the recommended way to purge blobs when the call - # needs to be made from a transaction, a callback, or any other real-time scenario. + # Enqueues an ActiveStorage::PurgeJob to call #purge. This is the recommended way to purge blobs from a transaction, + # an Active Record callback, or in any other real-time scenario. def purge_later ActiveStorage::PurgeJob.perform_later(self) end diff --git a/activestorage/app/models/active_storage/blob/representable.rb b/activestorage/app/models/active_storage/blob/representable.rb index fea62e62de..03d5511481 100644 --- a/activestorage/app/models/active_storage/blob/representable.rb +++ b/activestorage/app/models/active_storage/blob/representable.rb @@ -10,7 +10,7 @@ module ActiveStorage::Blob::Representable # Returns an ActiveStorage::Variant instance with the set of +transformations+ provided. This is only relevant for image # files, and it allows any image to be transformed for size, colors, and the like. Example: # - # avatar.variant(resize: "100x100").processed.service_url + # avatar.variant(resize_to_fit: [100, 100]).processed.service_url # # This will create and process a variant of the avatar blob that's constrained to a height and width of 100px. # Then it'll upload said variant to the service according to a derivative key of the blob and the transformations. @@ -18,7 +18,7 @@ module ActiveStorage::Blob::Representable # Frequently, though, you don't actually want to transform the variant right away. But rather simply refer to a # specific variant that can be created by a controller on-demand. Like so: # - # <%= image_tag Current.user.avatar.variant(resize: "100x100") %> + # <%= image_tag Current.user.avatar.variant(resize_to_fit: [100, 100]) %> # # This will create a URL for that specific blob with that specific variant, which the ActiveStorage::RepresentationsController # can then produce on-demand. @@ -43,13 +43,13 @@ module ActiveStorage::Blob::Representable # from a non-image blob. Active Storage comes with built-in previewers for videos and PDF documents. The video previewer # extracts the first frame from a video and the PDF previewer extracts the first page from a PDF document. # - # blob.preview(resize: "100x100").processed.service_url + # blob.preview(resize_to_fit: [100, 100]).processed.service_url # # Avoid processing previews synchronously in views. Instead, link to a controller action that processes them on demand. # Active Storage provides one, but you may want to create your own (for example, if you need authentication). Here’s # how to use the built-in version: # - # <%= image_tag video.preview(resize: "100x100") %> + # <%= image_tag video.preview(resize_to_fit: [100, 100]) %> # # This method raises ActiveStorage::UnpreviewableError if no previewer accepts the receiving blob. To determine # whether a blob is accepted by any previewer, call ActiveStorage::Blob#previewable?. @@ -69,7 +69,7 @@ module ActiveStorage::Blob::Representable # Returns an ActiveStorage::Preview for a previewable blob or an ActiveStorage::Variant for a variable image blob. # - # blob.representation(resize: "100x100").processed.service_url + # blob.representation(resize_to_fit: [100, 100]).processed.service_url # # Raises ActiveStorage::UnrepresentableError if the receiving blob is neither variable nor previewable. Call # ActiveStorage::Blob#representable? to determine whether a blob is representable. diff --git a/activestorage/app/models/active_storage/preview.rb b/activestorage/app/models/active_storage/preview.rb index 2b87897183..dd50494799 100644 --- a/activestorage/app/models/active_storage/preview.rb +++ b/activestorage/app/models/active_storage/preview.rb @@ -22,8 +22,8 @@ # Outside of a Rails application, modify +ActiveStorage.previewers+ instead. # # The built-in previewers rely on third-party system libraries. Specifically, the built-in video previewer requires -# {ffmpeg}[https://www.ffmpeg.org]. Two PDF previewers are provided: one requires {Poppler}[https://poppler.freedesktop.org], -# and the other requires {mupdf}[https://mupdf.com] (version 1.8 or newer). To preview PDFs, install either Poppler or mupdf. +# {FFmpeg}[https://www.ffmpeg.org]. Two PDF previewers are provided: one requires {Poppler}[https://poppler.freedesktop.org], +# and the other requires {muPDF}[https://mupdf.com] (version 1.8 or newer). To preview PDFs, install either Poppler or muPDF. # # These libraries are not provided by Rails. You must install them yourself to use the built-in previewers. Before you # install and use third-party software, make sure you understand the licensing implications of doing so. @@ -38,7 +38,7 @@ class ActiveStorage::Preview # Processes the preview if it has not been processed yet. Returns the receiving Preview instance for convenience: # - # blob.preview(resize: "100x100").processed.service_url + # blob.preview(resize_to_fit: [100, 100]).processed.service_url # # Processing a preview generates an image from its blob and attaches the preview image to the blob. Because the preview # image is stored with the blob, it is only generated once. diff --git a/activestorage/app/models/active_storage/variant.rb b/activestorage/app/models/active_storage/variant.rb index d84208419c..ea57fa5f78 100644 --- a/activestorage/app/models/active_storage/variant.rb +++ b/activestorage/app/models/active_storage/variant.rb @@ -1,24 +1,33 @@ # frozen_string_literal: true -require "active_storage/downloading" +require "ostruct" # Image blobs can have variants that are the result of a set of transformations applied to the original. # These variants are used to create thumbnails, fixed-size avatars, or any other derivative image from the # original. # -# Variants rely on {MiniMagick}[https://github.com/minimagick/minimagick] for the actual transformations -# of the file, so you must add <tt>gem "mini_magick"</tt> to your Gemfile if you wish to use variants. +# Variants rely on {ImageProcessing}[https://github.com/janko-m/image_processing] gem for the actual transformations +# of the file, so you must add <tt>gem "image_processing"</tt> to your Gemfile if you wish to use variants. By +# default, images will be processed with {ImageMagick}[http://imagemagick.org] using the +# {MiniMagick}[https://github.com/minimagick/minimagick] gem, but you can also switch to the +# {libvips}[http://jcupitt.github.io/libvips/] processor operated by the {ruby-vips}[https://github.com/jcupitt/ruby-vips] +# gem). # -# Note that to create a variant it's necessary to download the entire blob file from the service and load it -# into memory. The larger the image, the more memory is used. Because of this process, you also want to be -# considerate about when the variant is actually processed. You shouldn't be processing variants inline in a -# template, for example. Delay the processing to an on-demand controller, like the one provided in +# Rails.application.config.active_storage.variant_processor +# # => :mini_magick +# +# Rails.application.config.active_storage.variant_processor = :vips +# # => :vips +# +# Note that to create a variant it's necessary to download the entire blob file from the service. Because of this process, +# you also want to be considerate about when the variant is actually processed. You shouldn't be processing variants inline +# in a template, for example. Delay the processing to an on-demand controller, like the one provided in # ActiveStorage::RepresentationsController. # # To refer to such a delayed on-demand variant, simply link to the variant through the resolved route provided # by Active Storage like so: # -# <%= image_tag Current.user.avatar.variant(resize: "100x100") %> +# <%= image_tag Current.user.avatar.variant(resize_to_fit: [100, 100]) %> # # This will create a URL for that specific blob with that specific variant, which the ActiveStorage::RepresentationsController # can then produce on-demand. @@ -27,19 +36,24 @@ require "active_storage/downloading" # has already been processed and uploaded to the service, and, if so, just return that. Otherwise it will perform # the transformations, upload the variant to the service, and return itself again. Example: # -# avatar.variant(resize: "100x100").processed.service_url +# avatar.variant(resize_to_fit: [100, 100]).processed.service_url # # This will create and process a variant of the avatar blob that's constrained to a height and width of 100. # Then it'll upload said variant to the service according to a derivative key of the blob and the transformations. # -# A list of all possible transformations is available at https://www.imagemagick.org/script/mogrify.php. You can -# combine as many as you like freely: +# You can combine any number of ImageMagick/libvips operations into a variant, as well as any macros provided by the +# ImageProcessing gem (such as +resize_to_fit+): +# +# avatar.variant(resize_to_fit: [800, 800], monochrome: true, rotate: "-90") +# +# Visit the following links for a list of available ImageProcessing commands and ImageMagick/libvips operations: # -# avatar.variant(resize: "100x100", monochrome: true, flip: "-90") +# * {ImageProcessing::MiniMagick}[https://github.com/janko-m/image_processing/blob/master/doc/minimagick.md#methods] +# * {ImageMagick reference}[https://www.imagemagick.org/script/mogrify.php] +# * {ImageProcessing::Vips}[https://github.com/janko-m/image_processing/blob/master/doc/vips.md#methods] +# * {ruby-vips reference}[http://www.rubydoc.info/gems/ruby-vips/Vips/Image] class ActiveStorage::Variant - include ActiveStorage::Downloading - - WEB_IMAGE_CONTENT_TYPES = %w( image/png image/jpeg image/jpg image/gif ) + WEB_IMAGE_CONTENT_TYPES = %w[ image/png image/jpeg image/jpg image/gif ] attr_reader :blob, :variation delegate :service, to: :blob @@ -67,7 +81,7 @@ class ActiveStorage::Variant # Use <tt>url_for(variant)</tt> (or the implied form, like +link_to variant+ or +redirect_to variant+) to get the stable URL # for a variant that points to the ActiveStorage::RepresentationsController, which in turn will use this +service_call+ method # for its redirection. - def service_url(expires_in: service.url_expires_in, disposition: :inline) + def service_url(expires_in: ActiveStorage.service_urls_expire_in, disposition: :inline) service.url key, expires_in: expires_in, disposition: disposition, filename: filename, content_type: content_type end @@ -82,51 +96,36 @@ class ActiveStorage::Variant end def process - open_image do |image| - transform image - format image - upload image + blob.open do |image| + transform(image) { |output| upload(output) } end end - - def filename - if WEB_IMAGE_CONTENT_TYPES.include?(blob.content_type) - blob.filename - else - ActiveStorage::Filename.new("#{blob.filename.base}.png") - end + def transform(image, &block) + variation.transform(image, format: format, &block) end - def content_type - blob.content_type.presence_in(WEB_IMAGE_CONTENT_TYPES) || "image/png" + def upload(file) + service.upload(key, file) end - def open_image(&block) - image = download_image - - begin - yield image - ensure - image.destroy! - end - end - - def download_image - require "mini_magick" - MiniMagick::Image.create(blob.filename.extension_with_delimiter) { |file| download_blob_to(file) } + def specification + @specification ||= + if WEB_IMAGE_CONTENT_TYPES.include?(blob.content_type) + Specification.new \ + filename: blob.filename, + content_type: blob.content_type, + format: nil + else + Specification.new \ + filename: ActiveStorage::Filename.new("#{blob.filename.base}.png"), + content_type: "image/png", + format: "png" + end end - def transform(image) - variation.transform(image) - end + delegate :filename, :content_type, :format, to: :specification - def format(image) - image.format("PNG") unless WEB_IMAGE_CONTENT_TYPES.include?(blob.content_type) - end - - def upload(image) - File.open(image.path, "r") { |file| service.upload(key, file) } - end + class Specification < OpenStruct; end end diff --git a/activestorage/app/models/active_storage/variation.rb b/activestorage/app/models/active_storage/variation.rb index 12e7f9f0b5..3adc2407e5 100644 --- a/activestorage/app/models/active_storage/variation.rb +++ b/activestorage/app/models/active_storage/variation.rb @@ -6,17 +6,9 @@ # In case you do need to use this directly, it's instantiated using a hash of transformations where # the key is the command and the value is the arguments. Example: # -# ActiveStorage::Variation.new(resize: "100x100", monochrome: true, trim: true, rotate: "-90") +# ActiveStorage::Variation.new(resize_to_fit: [100, 100], monochrome: true, trim: true, rotate: "-90") # -# You can also combine multiple transformations in one step, e.g. for center-weighted cropping: -# -# ActiveStorage::Variation.new(combine_options: { -# resize: "100x100^", -# gravity: "center", -# crop: "100x100+0+0", -# }) -# -# A list of all possible transformations is available at https://www.imagemagick.org/script/mogrify.php. +# The options map directly to {ImageProcessing}[https://github.com/janko-m/image_processing] commands. class ActiveStorage::Variation attr_reader :transformations @@ -51,21 +43,13 @@ class ActiveStorage::Variation @transformations = transformations end - # Accepts an open MiniMagick image instance, like what's returned by <tt>MiniMagick::Image.read(io)</tt>, - # and performs the +transformations+ against it. The transformed image instance is then returned. - def transform(image) + # Accepts a File object, performs the +transformations+ against it, and + # saves the transformed image into a temporary file. If +format+ is specified + # it will be the format of the result image, otherwise the result image + # retains the source format. + def transform(file, format: nil, &block) ActiveSupport::Notifications.instrument("transform.active_storage") do - transformations.each do |name, argument_or_subtransformations| - image.mogrify do |command| - if name.to_s == "combine_options" - argument_or_subtransformations.each do |subtransformation_name, subtransformation_argument| - pass_transform_argument(command, subtransformation_name, subtransformation_argument) - end - else - pass_transform_argument(command, name, argument_or_subtransformations) - end - end - end + transformer.transform(file, format: format, &block) end end @@ -75,15 +59,22 @@ class ActiveStorage::Variation end private - def pass_transform_argument(command, method, argument) - if eligible_argument?(argument) - command.public_send(method, argument) + def transformer + if ActiveStorage.variant_processor + begin + require "image_processing" + rescue LoadError + ActiveSupport::Deprecation.warn <<~WARNING + Generating image variants will require the image_processing gem in Rails 6.1. + Please add `gem 'image_processing', '~> 1.2'` to your Gemfile. + WARNING + + ActiveStorage::Transformers::MiniMagickTransformer.new(transformations) + else + ActiveStorage::Transformers::ImageProcessingTransformer.new(transformations) + end else - command.public_send(method) + ActiveStorage::Transformers::MiniMagickTransformer.new(transformations) end end - - def eligible_argument?(argument) - argument.present? && argument != true - end end |