Struct Message 

pub struct Message {
    pub topic: String,
    pub tag: String,
    pub keys: Vec<String>,
    pub attributes: HashMap<String, String>,
    pub body: Bytes,
    /* private fields */
}

Fields

topic: String

In the publisher-subscriber model, a topic is an addresses where messages are delivered to and subscribed from.

tag: String

keys: Vec<String>

attributes: HashMap<String, String>

User defined attributes in form of key-value paris. Attributes are indexed by backend broker servers, thus, may be utilized to query.

body: Bytes