feat: Alerting module architecture to make it easy to use and extensible by external crates

Co-authored-by: Jean-Gabriel Gill-Couture <jg@nationtech.io>
Reviewed-on: NationTech/harmony#61
Reviewed-by: johnride <jg@nationtech.io>
Co-authored-by: Willem <wrolleman@nationtech.io>
Co-committed-by: Willem <wrolleman@nationtech.io>

examples/lamp/src/main.rs

@@ -4,7 +4,7 @@ use harmony::{
     maestro::Maestro,
     modules::{
         lamp::{LAMPConfig, LAMPScore},
-        monitoring::monitoring_alerting::MonitoringAlertingStackScore,
+        monitoring::alert_channel::discord_alert_channel::DiscordWebhook,
     },
     topology::{K8sAnywhereTopology, Url},
 };
@@ -32,6 +32,16 @@ async fn main() {
         },
     };
 
+    //let monitoring = MonitoringAlertingScore {
+    //    alert_receivers: vec![Box::new(DiscordWebhook {
+    //        url: Url::Url(url::Url::parse("https://discord.idonotexist.com").unwrap()),
+    //        // TODO write url macro
+    //        // url: url!("https://discord.idonotexist.com"),
+    //    })],
+    //    alert_rules: vec![],
+    //    scrape_targets: vec![],
+    //};
+
     // You can choose the type of Topology you want, we suggest starting with the
     // K8sAnywhereTopology as it is the most automatic one that enables you to easily deploy
     // locally, to development environment from a CI, to staging, and to production with settings
@@ -43,10 +53,7 @@ async fn main() {
     .await
     .unwrap();
 
-    let mut monitoring_stack_score = MonitoringAlertingStackScore::new();
-    monitoring_stack_score.namespace = Some(lamp_stack.config.namespace.clone());
-
-    maestro.register_all(vec![Box::new(lamp_stack), Box::new(monitoring_stack_score)]);
+    // maestro.register_all(vec![Box::new(lamp_stack)]);
     // Here we bootstrap the CLI, this gives some nice features if you need them
     harmony_cli::init(maestro, None).await.unwrap();
 }