SIGSEGV (Address boundary error) bug fixed!

src/endpoints.rs

@@ -4,24 +4,29 @@ use axum::{
     http
 };
 use crate::structs::v3::PrometheusMetrics;
-use prometheus::{ core::Collector, Encoder, Gauge, Registry, TextEncoder};
+use prometheus::{ core::Collector, Encoder, Registry, TextEncoder};
-use std::{cell::RefCell, rc::Rc, sync::{ Arc, MutexGuard }};
+use std::sync::{ Arc, MutexGuard };
 use crate::AppState;
 use tracing::{ debug, error, info, warn, trace };
 use crate::metrics::{MetricsProcesser, MetricsValueType};
 
-struct BoxCollectorProducer {
+#[derive(Clone)]
-    inner : *mut dyn Collector,
+struct CloneableCollector(Arc<dyn Collector>);
+impl CloneableCollector {
+    fn from_boxed(collector: Box<dyn Collector>) -> Self {
+        CloneableCollector(Arc::from(collector))
+    }
+    fn get_collector(&self) -> Box<dyn Collector> {
+        Box::new(self.clone())
+    }
 }
+impl Collector for CloneableCollector {
+    fn desc(&self) -> Vec<&prometheus::core::Desc> {
+        self.0.desc()
+    }
     
-impl BoxCollectorProducer {
+    fn collect(&self) -> Vec<prometheus::proto::MetricFamily> {
-    pub fn new(target: Box<dyn Collector>) -> Self {
+        self.0.collect()
-        Self {
-            inner : Box::into_raw(target)
-        }
-    }
-    pub fn new_box(&self) -> Box<dyn Collector> {
-        unsafe { Box::from_raw(self.inner) }
     }
 }
 
@@ -33,7 +38,7 @@ impl BoxCollectorProducer {
 /// # Usage
 /// 
 /// ``` bash
-/// curl -X POST -d '...' 'http::/localhost:9100/update'
+/// curl -X POST -d '...' 'http://127.0.0.1:9100/update' -d ...
 /// ```
 /// 
 pub async fn update_metrics(
@@ -98,7 +103,7 @@ pub async fn update_metrics(
 /// # Usage
 /// 
 /// ``` bash
-/// curl -X GET 'http::/localhost:9100/metrics'
+/// curl -X GET 'http://127.0.0.1:9100/metrics'
 /// ```
 /// 
 pub async fn metrics_handler(State(state): State<Arc<AppState>>) -> String {
@@ -135,11 +140,9 @@ pub fn update_or_insert_metric<'a>(
 ) -> anyhow::Result<()> {
     trace!("fn update_or_insert_metric is running");
     use prometheus::Error;
-    // let mut counter = 0;
+    let prod = CloneableCollector::from_boxed(metric);
-    // let ptr = Box::into_raw(metric);
-    let prod = BoxCollectorProducer::new(metric);
 
-    match registry.register(prod.new_box()) {
+    match registry.register(prod.get_collector()) {
         Ok(_) => {
             info!("Metric `{}` was registered!", metric_name);
         },
@@ -148,9 +151,9 @@ pub fn update_or_insert_metric<'a>(
             match er {
                 Error::AlreadyReg => {
                     trace!("processing already regged metric");
-                    match registry.unregister(prod.new_box()) {
+                    match registry.unregister(prod.get_collector()) {
                         Ok(_) => {
-                            if let Err(er) = registry.register(prod.new_box()) {
+                            if let Err(er) = registry.register(prod.get_collector()) {
                                 warn!("Cannot update metric `{}`", metric_name);
                                 return Err(anyhow::Error::msg(
                                     format!("Cannot update metric `{}` due to {}", metric_name, er)
@@ -166,29 +169,6 @@ pub fn update_or_insert_metric<'a>(
                             ))
                         },
                     }
-                    // use prometheus::opts;
-                    // use prometheus::GaugeVec;
-
-                    // let vec = GaugeVec::new(opts!("test", "test_help"), &["label"]).unwrap();
-                    // // vec.with_label_values(&["default"]).set(42.0);
-                    // if registry.unregister(Box::new(vec)).is_err() {
-                    //     debug!("unregister failed");
-                    // };
-                    
-                    // let vec = GaugeVec::new(opts!("test1", "test_help1"), &["label"]).unwrap();
-                    // vec.with_label_values(&["goood!"]).set(412.0);
-                    // let _ = registry.register(Box::new(vec));
-                    // registry
-                    //     .gather()
-                    //     .iter_mut()
-                    //     .filter(|target| target.get_name() == metric_name.trim())
-                    //     .for_each(|family| {
-                    //         // let prev: &mut GaugeVec = family.mut_metric()[0].mut_gauge();
-
-                    //         // GaugeVec::
-
-                    //         // info!("Metric `{}` was updated, new value - {}", metric_name, new);
-                    //     });
                 },
                 _ => {
                     error!("Cannot register new metric `{}` due to {}", metric_name, er);
@@ -200,8 +180,4 @@ pub fn update_or_insert_metric<'a>(
         },
     }
     Ok(())
-    // registry.gather()
-    //     .iter()
-    //     .filter(|fam| fam.get_name().)
-         
 }