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rails--rails/lib/active_storage/service/gcs_service.rb

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require "google/cloud/storage"
require "active_support/core_ext/object/to_query"
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class ActiveStorage::Service::GCSService < ActiveStorage::Service
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attr_reader :client, :bucket
def initialize(project:, keyfile:, bucket:)
@client = Google::Cloud::Storage.new(project: project, keyfile: keyfile)
@bucket = @client.bucket(bucket)
end
def upload(key, io)
bucket.create_file(io, key)
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end
def download(key)
io = file_for(key).download
io.rewind
io.read
end
def delete(key)
file_for(key).try(:delete)
end
def exist?(key)
file_for(key).present?
end
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def url(key, expires_in:, disposition:, filename:)
file_for(key).signed_url(expires: expires_in) + "&" +
{ "response-content-disposition" => "#{disposition}; filename=\"#{filename}\"" }.to_query
end
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def byte_size(key)
file_for(key).size
end
def checksum(key)
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convert_to_hex base64: file_for(key).md5
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end
private
def file_for(key)
bucket.file(key)
end
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def convert_to_hex(base64:)
base64.unpack("m0").first.unpack("H*").first
end
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end