def METHOD_NAME(config_filepath):
    """List projects and publish the data for each project to pubsub topic.
    Args:
        config_filepath: str, path for config file.
    """
    logging.info('Projects: Listing and publishing projects')
    config = config_utils.config(config_filepath)
    batch_id = common_utils.get_unique_id()
    timestamp = common_utils.zulu_timestamp()
    published_projects = set()
    resources = config.value('export.resources', default=tuple())
    for resource in resources:
        projects = _get_resource_projects(resource)
        for project in projects:
            project.timestamp = timestamp
            _publish_project_details(project, config, batch_id,
                                     published_projects)