def _get_polly_client()

in tts/src/tts/amazonpolly.py [0:0]

• 22 lines of code
• 2 McCabe index (conditional complexity)

    def _get_polly_client(self, aws_access_key_id=None, aws_secret_access_key=None, aws_session_token=None,
                          region_name=None, with_service_model_patch=False):
        """Note we get a new botocore session each time this function is called.
        This is to avoid potential problems caused by inner state of the session.
        """
        botocore_session = get_session()

        if with_service_model_patch:
            # Older versions of botocore don't have polly. We can possibly fix it by appending
            # extra path with polly service model files to the search path.
            current_dir = os.path.dirname(os.path.abspath(__file__))
            service_model_path = os.path.join(current_dir, 'data', 'models')
            botocore_session.set_config_variable('data_path', service_model_path)
            rospy.loginfo('patching service model data path: {}'.format(service_model_path))

        botocore_session.get_component('credential_provider').insert_after('boto-config', AwsIotCredentialProvider())

        botocore_session.user_agent_extra = self._generate_user_agent_suffix()

        session = Session(aws_access_key_id=aws_access_key_id, aws_secret_access_key=aws_secret_access_key,
                          aws_session_token=aws_session_token, region_name=region_name,
                          botocore_session=botocore_session)

        try:
            return session.client("polly")
        except UnknownServiceError:
            # the first time we reach here, we try to fix the problem
            if not with_service_model_patch:
                return self._get_polly_client(aws_access_key_id, aws_secret_access_key, aws_session_token, region_name,
                                              with_service_model_patch=True)
            else:
                # we have tried our best, time to panic
                rospy.logerr('Amazon Polly is not available. Please install the latest boto3.')
                raise