discourse/lib/file_store/local_store.rb

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class LocalStore
def store_upload(file, upload)
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path = get_path_for_upload(file, upload)
store_file(file, path)
end
def store_optimized_image(file, optimized_image)
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path = get_path_for_optimized_image(file, optimized_image)
store_file(file, path)
end
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def store_avatar(file, upload, size)
path = get_path_for_avatar(file, upload, size)
store_file(file, path)
end
def remove_upload(upload)
remove_file(upload.url)
end
def remove_optimized_image(optimized_image)
remove_file(optimized_image.url)
end
def remove_avatars(upload)
return unless upload.url =~ /avatars/
remove_directory(File.dirname(upload.url))
end
def has_been_uploaded?(url)
is_relative?(url) || is_local?(url)
end
def absolute_base_url
url = asset_host.present? ? asset_host : Discourse.base_url_no_prefix
"#{url}#{relative_base_url}"
end
def relative_base_url
"/uploads/#{RailsMultisite::ConnectionManagement.current_db}"
end
def external?
!internal?
end
def internal?
true
end
def path_for(upload)
"#{public_dir}#{upload.url}"
end
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def absolute_avatar_template(upload)
avatar_template(upload, absolute_base_url)
end
private
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def get_path_for_upload(file, upload)
unique_sha1 = Digest::SHA1.hexdigest("#{Time.now.to_s}#{file.original_filename}")[0..15]
extension = File.extname(file.original_filename)
clean_name = "#{unique_sha1}#{extension}"
# path
"#{relative_base_url}/#{upload.id}/#{clean_name}"
end
def get_path_for_optimized_image(file, optimized_image)
# 1234567890ABCDEF_100x200.jpg
filename = [
optimized_image.sha1[6..15],
"_#{optimized_image.width}x#{optimized_image.height}",
optimized_image.extension,
].join
# /uploads/<site>/_optimized/<1A3>/<B5C>/<filename>
File.join(
relative_base_url,
"_optimized",
optimized_image.sha1[0..2],
optimized_image.sha1[3..5],
filename
)
end
def get_path_for_avatar(file, upload, size)
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relative_avatar_template(upload).gsub("{size}", size.to_s)
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end
def relative_avatar_template(upload)
avatar_template(upload, relative_base_url)
end
def avatar_template(upload, base_url)
File.join(
base_url,
"avatars",
upload.sha1[0..2],
upload.sha1[3..5],
upload.sha1[6..15],
"{size}#{upload.extension}"
)
end
def store_file(file, path)
# copy the file to the right location
copy_file(file, "#{public_dir}#{path}")
# url
Discourse.base_uri + path
end
def copy_file(file, path)
FileUtils.mkdir_p Pathname.new(path).dirname
# move the file to the right location
# not using cause mv, cause permissions are no good on move
File.open(path, "wb") do |f|
f.write(file.read)
end
end
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def remove_file(url)
File.delete("#{public_dir}#{url}") if has_been_uploaded?(url)
rescue Errno::ENOENT
# don't care if the file isn't there
end
def remove_directory(path)
directory = "#{public_dir}/#{path}"
FileUtils.rm_rf(directory)
end
def is_relative?(url)
url.start_with?(relative_base_url)
end
def is_local?(url)
url.start_with?(absolute_base_url)
end
def public_dir
"#{Rails.root}/public"
end
def asset_host
Rails.configuration.action_controller.asset_host
end
end