#![allow(non_upper_case_globals)]
use bytes::Bytes;
pub use rumqttc::v5::mqttbytes::QoS;
pub use rumqttc::v5::mqttbytes::v5::Publish as Message;
use serde::Serializer;
use serde::de::Deserializer;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::fmt::Display;
use std::io::Read;
use toolkit_rs::AppResult;
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 MqttMessage {
Msg(Message),
EvtConnected,
EvtDisconnected,
EvtError(String),
EvtClosed,
}
pub const EvtTopic: &'static str = "/r_rmqttc/evt/msg";
pub const EvtErrorTopic: &'static str = "/r_rmqttc/evt/error";
pub const UnkonwTopic: &'static str = "/r_rmqttc/evt/unkonw";
impl MqttMessage {
pub fn to_string(&self) -> String {
match self {
MqttMessage::EvtConnected => format!("connected"),
MqttMessage::EvtDisconnected => format!("disconnected"),
MqttMessage::EvtClosed => format!("Closed"),
MqttMessage::EvtError(s) => format!("Error: {}", s),
MqttMessage::Msg(msg) => {
let topic = String::from_utf8_lossy(&msg.topic);
let payload = String::from_utf8_lossy(&msg.payload);
format!("topic: {}, payload: {}", topic, payload)
}
}
}
pub fn callback_router_topic(&self) -> String {
match self {
MqttMessage::EvtError(_) => EvtErrorTopic.into(),
MqttMessage::Msg(msg) => match bytes_to_string(&msg.topic) {
Some(s) => return s,
None => UnkonwTopic.into(),
},
MqttMessage::EvtConnected | MqttMessage::EvtDisconnected | MqttMessage::EvtClosed => {
EvtTopic.into()
}
}
}
}
pub fn read_file_into_bytes(path: &str) -> AppResult<Vec<u8>> {
let mut file = std::fs::File::open(path)?;
let mut contents = Vec::new();
file.read_to_end(&mut contents)?;
Ok(contents)
}
#[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)
}
pub 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)
}
pub 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);
}
}