prepareBatchBody method

@override Future<({List<int> body, Map<String, String> extraHeaders})> prepareBatchBody(List<Map<String, dynamic>> batch)

Prepares the batch body bytes for sending.

Override this for custom serialization (e.g., gzip compression). The default implementation JSON-encodes the batch.

Returns a record with body bytes and optional extra headers.

Implementation

@override
Future<({List<int> body, Map<String, String> extraHeaders})> prepareBatchBody(
  List<Map<String, dynamic>> batch,
) async {
  if (useIsolate) {
    try {
      final prepared = await isolateManager.prepareBatch(
        batch: batch,
        compress: false, // New Relic doesn't use compression
      );
      final body = utf8.encode(
        utf8.decode((prepared['body'] as List).cast<int>()),
      );
      return (body: body, extraHeaders: <String, String>{});
    } catch (_) {
      // Fallback to direct processing
    }
  }

  return (
    body: utf8.encode(jsonEncode(batch)),
    extraHeaders: <String, String>{},
  );
}