simple_logger.yaml

# A sample file for logger/listener/listen.py
##
# To run, type:
#
#    logger/listener/listen.py --config_file test/configs/simple_logger.yaml
#
# Dictionary key/value pairs are used as keyword arguments for creating a
# Listener. The keys "reader", "transform" and "writer" are special-cased to
# indicate that the respective entities should be instantiated (recursively,
# if necessary).

# One reader. If we had multiple readers, we'd list them sequentially
# in a list, and they would be executed in parallel.

readers:
  class: TextFileReader
  kwargs:  # initialization kwargs
    file_spec: LICENSE

# Timestamp and label. We have two transforms; they are encapsulated
# in a list and will be executed sequentially.
transforms:
- class: TimestampTransform # TimestampTransform has no kwargs
- class: PrefixTransform
  kwargs:
    prefix: "license:"  # enclose in quotes because the ":" can confuse YAML
    
# Only a single writer. If there were multiple writers, they would be
# called in parallel.
writers:
  class: TextFileWriter
  # No initialization kwargs; no filename, so TextFileWriter
  # will write to stdout

interval: 0.2
check_format: false