mod client;
mod conn;
mod handler;
mod manager;
mod router;
use anyhow::{Result, anyhow};
use bytes::Bytes;
pub use client::{Client, MqttClient};
use conn::*;
pub use handler::IHandler;
use manager::*;
pub use router::*;
pub use rumqttc::v5::mqttbytes::QoS;
pub use rumqttc::v5::mqttbytes::v5::{ConnectProperties, Publish as Message};
pub use rumqttc::v5::{AsyncClient, MqttOptions as Config};
use serde::Serializer;
use serde::de::Deserializer;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::fmt::Display;
use std::sync::Arc;
use std::time::Duration;
use tokio::{sync::watch, time};
pub type MqttResult<T = ()> = std::result::Result<T, anyhow::Error>;
#[derive(Debug, Eq, PartialEq, Clone)]
pub enum State {
Pending,
Connected,
Disconnected,
Closed,
Error(String),
}
impl Display for State {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
State::Pending => write!(f, "pending"),
State::Connected => write!(f, "connected"),
State::Disconnected => write!(f, "disconnected"),
State::Closed => write!(f, "closed"),
State::Error(s) => write!(f, "Error: {}", s),
}
}
}
#[derive(Debug, Eq, PartialEq, Clone)]
pub enum MqttEvent {
Connected,
Disconnected,
Error(String),
Closed,
}
impl MqttEvent {
pub fn to_string(&self) -> String {
match self {
MqttEvent::Connected => format!("connected"),
MqttEvent::Disconnected => format!("disconnected"),
MqttEvent::Closed => format!("Closed"),
MqttEvent::Error(s) => format!("Error: {}", s),
}
}
}
pub async fn start_with_cfg(
cfg: Config,
timeout: Duration,
handler: Box<dyn IHandler>,
) -> MqttResult<MqttClient> {
let (conn, c) = Conn::new(cfg);
let (state_tx, state_rx) = watch::channel(State::Pending);
let (close_send, close_recv) = watch::channel(false);
let client = Arc::new(Client::new(state_rx, c, close_send));
Manager::new(state_tx, conn, handler).run(close_recv.clone());
let mut timeout = timeout.as_secs();
if timeout <= 0 {
timeout = 10;
}
let mut re_count = 0;
while !client.connected() {
if re_count > timeout {
log::error!("connect timeout {} s", timeout);
client.close().await?;
time::sleep(Duration::from_millis(100)).await;
return Err(anyhow!("连接超时，请检查网络是否正常.."));
}
if let Some(s) = client.state_is_error() {
return Err(anyhow!("连接失败: {}", s));
}
log::debug!("wait connect..");
time::sleep(Duration::from_secs(1)).await;
re_count += 1;
}
Client::run(client.clone(), close_recv.clone());
Ok(client)
}
#[derive(Debug, Serialize, Deserialize)]
pub struct PublishMessage {
pub topic: String,
#[serde(serialize_with = "serialize_qos", deserialize_with = "deserialize_qos")]
pub qos: QoS,
pub retain: bool,
pub last_will: Option<bool>,
pub data: Value,
}
impl Default for PublishMessage {
fn default() -> Self {
PublishMessage {
topic: "".to_string(),
qos: QoS::AtMostOnce,
retain: false,
last_will: None,
data: Value::Null,
}
}
}
fn serialize_qos<S>(qos: &QoS, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let num = qos_to_u8(qos);
serializer.serialize_u8(num)
}
fn deserialize_qos<'de, D>(deserializer: D) -> Result<QoS, D::Error>
where
D: Deserializer<'de>,
{
let v = u8::deserialize(deserializer)?;
let q = rumqttc::v5::mqttbytes::qos(v).unwrap_or(QoS::AtMostOnce);
Ok(q)
}
fn qos_to_u8(qos: &QoS) -> u8 {
match qos {
QoS::AtMostOnce => 0,
QoS::AtLeastOnce => 1,
QoS::ExactlyOnce => 2,
}
}
pub fn json_value_into_bytes(v: Value) -> Bytes {
let d = v.to_string().into_bytes();
Bytes::from(d)
}
pub fn to_topic(topic: &str, skuid: &str, uuid: &str) -> String {
topic.replace("{skuid}", skuid).replace("{uuid}", uuid)
}
pub fn topic_match_one(topic: &str, topic_filter: &str) -> bool {
if topic.to_lowercase() == topic_filter.to_lowercase() {
return true;
}
let topic_parts: Vec<&str> = topic.split('/').collect();
let pattern_parts: Vec<&str> = topic_filter.split('/').collect();
if topic_parts.len() != pattern_parts.len() {
return false;
}
for (i, pattern_part) in pattern_parts.iter().enumerate() {
if *pattern_part != "+" && *pattern_part != topic_parts[i] {
return false;
}
}
true
}
pub fn topic_get_match_one(topic: &str, topic_filter: &str) -> Option<Vec<String>> {
let topic_parts: Vec<&str> = topic.split('/').collect();
let pattern_parts: Vec<&str> = topic_filter.split('/').collect();
if topic_parts.len() != pattern_parts.len() {
return None;
}
let mut values = Vec::new();
for (i, pattern_part) in pattern_parts.iter().enumerate() {
if *pattern_part == "+" {
values.push(topic_parts[i].to_string());
} else if *pattern_part != topic_parts[i] {
return None; }
}
Some(values)
}
pub fn topic_match_all(topic: &str, filter: &str) -> bool {
if topic.to_lowercase() == filter.to_lowercase() {
return true;
}
let topic_parts: Vec<&str> = topic.split('/').collect();
let filter_parts: Vec<&str> = filter.split('/').collect();
if let Some(pos) = filter_parts.iter().position(|&x| x == "#") {
if topic_parts.len() < pos {
return false;
}
for i in 0..pos {
if filter_parts[i] != "+" && filter_parts[i] != topic_parts[i] {
return false;
}
}
true
} else {
if topic_parts.len() != filter_parts.len() {
return false;
}
for (i, &filter_part) in filter_parts.iter().enumerate() {
if filter_part != "+" && filter_part != topic_parts[i] {
return false;
}
}
true
}
}
pub fn bytes_to_string(b: &Bytes) -> Option<String> {
std::str::from_utf8(b).ok().map(|s| s.to_string())
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_topic_is_match() {
let topic = "test/topic/1/21";
let topic_filter = "test/topic/+/+";
let res = topic_match_one(topic, topic_filter);
println!("res:===> {}", res);
}
#[test]
fn test_topic_get_match() {
let topic = "test/topic/1/21";
let topic_filter = "test/topic/+/+";
let res = topic_get_match_one(topic, topic_filter);
println!("res:===> {:?}", res);
}
#[test]
fn test_topic_match_all() {
let topic = "test/topic/1/21/2232";
let topic_filter = "test/topic/11/#";
let res = topic_match_all(topic, topic_filter);
println!("res:===> {}", res);
}
}