Specification for ln Backends

gistfile1.txt

Backend.get_data_source_list()
  Returns: list of data source names

Backend.create_data_source(name, type, reduction, interpolation, unit, description)
  Returns: None

Backend.add_data(source_name, time, value)
  Returns: (index, url) tuple, where index is index of data point and url is an image URL or None
  Raises:
    - TimeOrderError: The timestamp for the data point is before the last recorded data point
    - BadTypeError: The value does not match the data type of the source or has the wrong dimensions for array types

Backend.get_data(source_name, offset=None, limit=None)
  Returns: (times, values, resume) where times and values are arrays, resume is last returned index for pagination or None

Backend.update_config(source_name, unit='', description='')
  Returns: None

Backend.get_config(source_name)
  Returns: dict-like data source configuration

Backend.query(selectors, first, last, npoints)
  Returns: (times, values) tuple, times and values are arrays

Backend.query_continuous(selectors, first, npoints)
  Returns: Generator of (time, value) tuples