with builtins; {

  imports = [
    ./provider.nix
    #./nginx.nix
    ./journald.nix
  ];

  resource.graylog_output.stdout = {
    title = "test stdout";
    type = "org.graylog2.outputs.LoggingOutput";
    configuration = toJSON ({ prefix = "Writing message: "; });
  };

  # create default index
  resource.graylog_index_set.default = let
    maxIndexSize = 200;
    maxIndexCount = 20;
    isDefault = false;
  in {
    title = "default";
    description = ''
      This is the default index set, where everything ends up which is
      not specifically send to another index.

      Be aware this index can only hold ${
        toString (maxIndexCount * maxIndexSize)
      }MB of logs!
    '';
    default = isDefault;
    index_prefix = "test-graylog";
    rotation_strategy_class =
      "org.graylog2.indexer.rotation.strategies.SizeBasedRotationStrategy";
    retention_strategy_class =
      "org.graylog2.indexer.retention.strategies.DeletionRetentionStrategy";
    index_analyzer = "standard";
    index_optimization_disabled = true;
    writable = true;
    shards = 1;
    replicas = 0;
    index_optimization_max_num_segments = 1;
    field_type_refresh_interval = 5000;

    retention_strategy = toJSON ({
      max_number_of_indices = maxIndexCount;
      type =
        "org.graylog2.indexer.retention.strategies.DeletionRetentionStrategyConfig";
    });

    rotation_strategy = toJSON ({
      #max_docs_per_index = 30000000;
      max_size = maxIndexSize * 1024 * 1024;
      type =
        "org.graylog2.indexer.rotation.strategies.SizeBasedRotationStrategyConfig";
    });
  };
}