TOPIC_CONTEXT    = 'context'
TOPIC_TOPOLOGY   = 'topology'
TOPIC_DEVICE     = 'device'
TOPIC_LINK       = 'link'
TOPIC_SERVICE    = 'service'
TOPIC_CONNECTION = 'connection'

TOPICS = {TOPIC_CONTEXT, TOPIC_TOPOLOGY, TOPIC_DEVICE, TOPIC_LINK, TOPIC_SERVICE, TOPIC_CONNECTION}

CONSUME_TIMEOUT = 0.5 # seconds
