lazy_static does not help for MQTT, qwen2.5-coder did not help this time :-(

client/bin/src/main.rs

@@ -47,6 +47,37 @@ const IMAGE_HEIGHT_BYTE: u32 = 40;
 const IMAGE_LENGTH: usize = (IMAGE_WIDTH_BYTE * IMAGE_HEIGHT_BYTE) as usize;
 const PACKAGE_LENGTH: usize = (IMAGE_LENGTH + 1) as usize;
 
+/// @struct MqttClient
+/// @brief A struct to hold application configuration settings.
+///
+/// The `MqttClient` struct contains various configuration parameters that control the behavior of the application.
+pub struct MqttClient {
+    /// MQTT client option
+    pub mqtt_client: Option<paho_mqtt::AsyncClient>,
+}
+
+impl MqttClient {
+    /// Creates a new instance of MqttClient with mqtt_client initialized to None.
+    pub fn new() -> Self {
+        MqttClient { 
+            mqtt_client: None,
+        }
+    }
+
+    /// Setter for mqtt_client
+    pub fn set_mqtt_client(&mut self, client: Option<paho_mqtt::AsyncClient>) {
+        self.mqtt_client = client;
+    }
+
+    /// Getter for mqtt_client
+    pub fn get_mqtt_client(&self) -> &Option<paho_mqtt::AsyncClient> {
+        &self.mqtt_client
+    }
+}
+
+lazy_static! {
+    static ref MQTTCLIENT: Mutex<MqttClient> = Mutex::new(MqttClient::new());
+}
 
 struct UdpDisplay {
     image: [u8; IMAGE_SIZE_BYTE],
@@ -423,17 +454,17 @@ lazy_static! {
 /// @author Gwen2.5
 /// 
 /// # Arguments
-/// * `mac` - Paho async client
 /// * `topic` - The MQTT topic to which the message will be published.
 /// * `message` - The message to be published.
 /// 
 /// # Returns
 /// True if the message was successfully published, false otherwise.
-async fn publish_message(ref mac: AsyncClient, topic: &str, message: &str) -> bool {
+async fn publish_message(topic: &str, message: &str) -> bool {
     let msg = MqttMessage::new(topic, message, 0);
 
+    let mqtt_client =  <std::option::Option<AsyncClient> as Clone>::clone(&(MQTTCLIENT.lock().unwrap().get_mqtt_client())).unwrap();
     // Publish the message and ensure it completes without error
-    let token = match mac.publish(msg).await {
+    let token = match mqtt_client.publish(msg).await {
         Ok(_token) => {
             return true;
         },
@@ -442,7 +473,6 @@ async fn publish_message(ref mac: AsyncClient, topic: &str, message: &str) -> bo
             return false;
         }
     };
-    
 }
 
 fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
@@ -486,7 +516,7 @@ fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
         }
     }
 
-    let mut mqtt_client: Option<paho_mqtt::AsyncClient> = None;
+    let mut gmc = MQTTCLIENT.lock().unwrap();
     let mut mqtt_message: Arc<Mutex<Message>> = Arc::new(Mutex::new(Message{ string: None }));
 
     if GlobalConfiguration.lock().is_ok() && (GlobalConfiguration.lock().unwrap().mqttIPAddress.len() > 0)
@@ -551,7 +581,7 @@ fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
         local_mqtt.connect_with_callbacks(conn_opts, mqtt_on_connect_success, mqtt_on_connect_failure);
 
         // move local instance to global scope
-        mqtt_client = Some(local_mqtt);
+        gmc.set_mqtt_client(Some(local_mqtt));
     }
 
     let receiver = openweathermap::init_forecast("Mannheim",
@@ -599,14 +629,8 @@ fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
 
             if GlobalConfiguration.lock().is_ok() && GlobalConfiguration.lock().unwrap().mqttPrefix.len() > 0
             {
-                if mqtt_client.is_some()
-                {
-                    fun_publishinfoviamqtt(mqtt_client.clone().unwrap(), &straba_res);
-                }
-                else
-                {
-                    println!("Update MQTT not possible");
-                }
+                //FIXME if mqtt_client.is_some()
+                fun_publishinfoviamqtt(&straba_res);
             }
             
             // request once a minute new data
@@ -632,15 +656,12 @@ fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
     }
 }
 
-fn fun_publishinfoviamqtt(mqtt_client: AsyncClient, straba_res: &NextDeparture) {
+fn fun_publishinfoviamqtt(straba_res: &NextDeparture) {
     let topic_in_station: String = format!("{}{}", GlobalConfiguration.lock().unwrap().mqttPrefix, "/inbound/station");
     let station_name: String = format!("{}", straba_res.inbound_station);
-    if mqtt_client.is_connected() {
-        publish_message(mqtt_client, topic_in_station.as_str(), station_name.as_str());
-        println!("MQTT published {:?} = {:?}s", topic_in_station, straba_res.outbound_station);
-    } else {
-        println!("MQTT not ready... {:?} = {:?}s", topic_in_station, straba_res.outbound_station);
-    }
+    //FIXME if mqtt_client.is_connected() {
+    publish_message(topic_in_station.as_str(), station_name.as_str());
+    println!("MQTT published {:?} = {:?}s", topic_in_station, straba_res.outbound_station);
 }
 
 fn main() -> ExitCode {