def get_user_agent():
"""Find an existing user agent or insert a new one"""
# The raw user agent string received from the browser
uag = request.user_agent
hash = utils.compute_text_md5(uag.string)
# The entity representing the user agent
user_agent = UserAgentEntity.get_by_hash(hash)
if user_agent is None:
platform = uag.platform if uag.platform is not None else ''
browser = uag.browser if uag.browser is not None else ''
version = uag.version if uag.version is not None else ''
language = uag.language if uag.language is not None else ''
user_agent = UserAgentEntity.create(user_agent=uag.string,
hash=hash,
platform=platform,
browser=browser,
version=version,
language=language)
# app.logger.debug(user_agent)
return user_agent
