Class: Aws::Plugins::RequestCompression::CompressionHandler::GzipIO Private

Inherits:
Object
  • Object
show all
Defined in:
lib/aws-sdk-core/plugins/request_compression.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Constructor Details

#initialize(body) ⇒ GzipIO

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of GzipIO.



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# File 'lib/aws-sdk-core/plugins/request_compression.rb', line 171

def initialize(body)
  @body = body
  @buffer = ChunkBuffer.new
  @gzip_writer = Zlib::GzipWriter.new(@buffer)
end

Instance Method Details

#read(length, buff = nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/aws-sdk-core/plugins/request_compression.rb', line 177

def read(length, buff = nil)
  if @gzip_writer.closed?
    # an empty string to signify an end as
    # there will be nothing remaining to be read
    StringIO.new('').read(length, buff)
    return
  end

  chunk = @body.read(length)
  if !chunk || chunk.empty?
    # closing the writer will write one last chunk
    # with a trailer (to be read from the @buffer)
    @gzip_writer.close
  else
    # flush happens first to ensure that header fields
    # are being sent over since write will override
    @gzip_writer.flush
    @gzip_writer.write(chunk)
  end

  StringIO.new(@buffer.last_chunk).read(length, buff)
end