lib/docker/messages.rb
# This class represents all the messages either received by chunks from attach
class Docker::Messages
attr_accessor :buffer, :stdout_messages, :stderr_messages, :all_messages
def initialize(stdout_messages=[],
stderr_messages=[],
all_messages=[],
buffer="")
@stdout_messages = stdout_messages
@stderr_messages = stderr_messages
@all_messages = all_messages
@buffer = buffer
end
def add_message(source, message)
case source
when 1
stdout_messages << message
when 2
stderr_messages << message
end
all_messages << message
end
def get_message(raw_text)
header = raw_text.slice!(0,8)
if header.length < 8
@buffer = header
return
end
type, length = header.unpack("CxxxN")
message = raw_text.slice!(0,length)
if message.length < length
@buffer = header + message
else
add_message(type, message)
end
end
def append(messages)
@stdout_messages += messages.stdout_messages
@stderr_messages += messages.stderr_messages
@all_messages += messages.all_messages
messages.clear
@all_messages
end
def clear
stdout_messages.clear
stderr_messages.clear
all_messages.clear
end
# Method to break apart application/vnd.docker.raw-stream headers
def decipher_messages(body)
raw_text = buffer + body.dup
messages = Docker::Messages.new
while !raw_text.empty?
messages.get_message(raw_text)
end
messages
end
end