Wraps the Microsoft Azure Storage Blob Service as an Active Storage service. See ActiveStorage::Service for the generic API documentation that applies to all services.

Methods

Attributes

[R] blobs
[R] client
[R] container
[R] signer

Class Public methods

new(storage_account_name:, storage_access_key:, container:)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 13
def initialize(storage_account_name:, storage_access_key:, container:)
  @client = Azure::Storage::Client.create(storage_account_name: storage_account_name, storage_access_key: storage_access_key)
  @signer = Azure::Storage::Core::Auth::SharedAccessSignature.new(storage_account_name, storage_access_key)
  @blobs = client.blob_client
  @container = container
end

Instance Public methods

delete(key)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 50
def delete(key)
  instrument :delete, key: key do
    begin
      blobs.delete_blob(container, key)
    rescue Azure::Core::Http::HTTPError
      # Ignore files already deleted
    end
  end
end

delete_prefixed(prefix)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 60
def delete_prefixed(prefix)
  instrument :delete_prefixed, prefix: prefix do
    marker = nil

    loop do
      results = blobs.list_blobs(container, prefix: prefix, marker: marker)

      results.each do |blob|
        blobs.delete_blob(container, blob.name)
      end

      break unless marker = results.continuation_token.presence
    end
  end
end

download(key, &block)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 30
def download(key, &block)
  if block_given?
    instrument :streaming_download, key: key do
      stream(key, &block)
    end
  else
    instrument :download, key: key do
      _, io = blobs.get_blob(container, key)
      io.force_encoding(Encoding::BINARY)
    end
  end
end

download_chunk(key, range)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 43
def download_chunk(key, range)
  instrument :download_chunk, key: key, range: range do
    _, io = blobs.get_blob(container, key, start_range: range.begin, end_range: range.exclude_end? ? range.end - 1 : range.end)
    io.force_encoding(Encoding::BINARY)
  end
end

exist?(key)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 76
def exist?(key)
  instrument :exist, key: key do |payload|
    answer = blob_for(key).present?
    payload[:exist] = answer
    answer
  end
end

headers_for_direct_upload(key, content_type:, checksum:, **)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 116
def headers_for_direct_upload(key, content_type:, checksum:, **)
  { "Content-Type" => content_type, "Content-MD5" => checksum, "x-ms-blob-type" => "BlockBlob" }
end

upload(key, io, checksum: nil, **)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 20
def upload(key, io, checksum: nil, **)
  instrument :upload, key: key, checksum: checksum do
    begin
      blobs.create_block_blob(container, key, IO.try_convert(io) || io, content_md5: checksum)
    rescue Azure::Core::Http::HTTPError
      raise ActiveStorage::IntegrityError
    end
  end
end

url(key, expires_in:, filename:, disposition:, content_type:)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 84
def url(key, expires_in:, filename:, disposition:, content_type:)
  instrument :url, key: key do |payload|
    generated_url = signer.signed_uri(
      uri_for(key), false,
      service: "b",
      permissions: "r",
      expiry: format_expiry(expires_in),
      content_disposition: content_disposition_with(type: disposition, filename: filename),
      content_type: content_type
    ).to_s

    payload[:url] = generated_url

    generated_url
  end
end

url_for_direct_upload(key, expires_in:, content_type:, content_length:, checksum:)

# File activestorage/lib/active_storage/service/azure_storage_service.rb, line 101
def url_for_direct_upload(key, expires_in:, content_type:, content_length:, checksum:)
  instrument :url, key: key do |payload|
    generated_url = signer.signed_uri(
      uri_for(key), false,
      service: "b",
      permissions: "rw",
      expiry: format_expiry(expires_in)
    ).to_s

    payload[:url] = generated_url

    generated_url
  end
end