Struct Message 

pub struct Message {
    pub topic: String,
    pub payload: Vec<u8>,
    pub key: Option<String>,
    pub timestamp: i64,
    pub headers: HashMap<String, String>,
    pub id: String,
    pub retry_count: u32,
}

消息体

包含 topic、payload、key、timestamp、headers、id 以及重试次数 retry_count。

Fields

topic: String

payload: Vec<u8>

key: Option<String>

timestamp: i64

headers: HashMap<String, String>

id: String

retry_count: u32

重试次数（nack 时递增，达到 max_retries 后转入死信队列）

Implementations

impl Message

pub fn new(topic: impl Into<String>, payload: Vec<u8>) -> Self

pub fn with_key(self, key: impl Into<String>) -> Self

pub fn text(&self) -> Option<&str>

pub fn json<T: DeserializeOwned>(&self) -> Option<T>

pub fn text_message(topic: impl Into<String>, text: impl Into<String>) -> Self

pub fn json_message<T: Serialize>( topic: impl Into<String>, data: &T, ) -> Result<Self, MqError>

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Message

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Message

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Message

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.