Membrane Guide
Membrane Guide v0.9.0

Logging

Apart from usual Logger configuration, logging in Membrane can be additionally configured, also via Elixir's Config. It allows to enable verbose mode and customize metadata, for example:

config :membrane_core, :logger, verbose: true

See Membrane.Logger for details.

Moreover, pipelines support Membrane.Pipeline.Action.log_metadata_t/0, that enables setting logger metadata to all descendants of a pipeline, for example:

@impl true
def handle_init(opts) do
  # ...
  {{:ok, log_metadata: [pipeline_id: opts.id]}, state}
end

To have the metadata displayed, remember to enable that in the logger backend, for example:

config :logger, :console, metadata: [:pipeline_id]

The log_metadata action is also available in bins: Membrane.Bin.Action.log_metadata_t/0.