toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
final buffer = StringBuffer();
buffer.write('[${timestamp.toIso8601String()}] ');
buffer.write('[${level.name.toUpperCase()}] ');
if (category != null) buffer.write('[$category] ');
buffer.write(message);
if (operationId != null) buffer.write(' (op:$operationId)');
if (duration != null) buffer.write(' (${duration!.inMilliseconds}ms)');
if (metadata != null && metadata!.isNotEmpty) {
buffer.write(' ${metadata.toString()}');
}
return buffer.toString();
}