Same as previous

Description

Compare JSON key value to the value passed in parameter and returns true if match.

Parameters

Parameter	Description	Type	Default
keys	JSON keys where values are located, separate nested dictionary with /	list[str]	N/A (Mandatory)
exclude	JSON keys to exclude in comparison	list[str]	N/A (Mandatory)

Configuration

Skip republishing Diagnostics when nothing has changed since the last collection — /diagnostics is typically high-volume and mostly unchanging:

measurement_server:
  ros__parameters:
    condition_plugins: ["diagnostics_unchanged"]
    diagnostics_unchanged:
      plugin: "dc_conditions/SameAsPrevious"
      keys: []
      exclude: []
    diagnostics:
      plugin: "dc_measurements/Diagnostics"
      if_none_conditions: ["diagnostics_unchanged"]
      topic_output: "/dc/measurement/diagnostics"
      level_threshold: "WARN"
      names: ["motor_driver", "battery"]