MessageEnvelope constructor

MessageEnvelope(String? correlationId, String? messageType, dynamic message)

Creates a new MessageEnvelope, which adds a correlation id, message id, and a type to the data being sent/received.

• correlationId (optional) transaction id to trace execution through call chain.
• messageType a string value that defines the message's type.
• message the data being sent/received.

Implementation

MessageEnvelope(String? correlationId, String? messageType, message)
    : correlation_id = correlationId,
      message_type = messageType,
      message_id = IdGenerator.nextLong() {
  if (message is Map || message is List) {
    setMessageAsJson(message);
  } else {
    this.message = message;
  }
}