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# Copyright (C) 2015 Custodia Project Contributors - see LICENSE file
import json
from six import string_types
from custodia.message.common import InvalidMessage
from custodia.message.common import MessageHandler
class SimpleKey(MessageHandler):
"""Handles 'simple' messages"""
def parse(self, msg, name):
"""Parses a simple message
:param req: ignored
:param msg: the json-decoded value
:raises UnknownMessageType: if the type is not 'simple'
:raises InvalidMessage: if the message cannot be parsed or validated
"""
# On requests we imply 'simple' if there is no input message
if msg is None:
return
if not isinstance(msg, string_types):
raise InvalidMessage("The 'value' attribute is not a string")
self.name = name
self.payload = msg
def reply(self, output):
if self.name.endswith('/'):
# directory listings are pass-through with simple messages
return output
return json.dumps({'type': 'simple', 'value': output},
separators=(',', ':'))
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