feat: add service monitors support to prom (#66)

Co-authored-by: tahahawa <tahahawa@gmail.com>
Reviewed-on: NationTech/harmony#66
Co-authored-by: taha <taha@noreply.git.nationtech.io>
Co-committed-by: taha <taha@noreply.git.nationtech.io>

examples/monitoring/Cargo.toml

@@ -8,5 +8,6 @@ license.workspace = true
 [dependencies]
 harmony = { version = "0.1.0", path = "../../harmony" }
 harmony_cli = { version = "0.1.0", path = "../../harmony_cli" }
+harmony_macros = { version = "0.1.0", path = "../../harmony_macros" }
 tokio.workspace = true
 url.workspace = true

examples/monitoring/src/main.rs

@@ -1,3 +1,5 @@
+use std::collections::HashMap;
+
 use harmony::{
     inventory::Inventory,
     maestro::Maestro,
@@ -41,9 +43,30 @@ async fn main() {
         ],
     );
 
+    let service_monitor_endpoint = ServiceMonitorEndpoint {
+        port: Some("80".to_string()),
+        path: "/metrics".to_string(),
+        scheme: HTTPScheme::HTTP,
+        ..Default::default()
+    };
+
+    let service_monitor = ServiceMonitor {
+        name: "test-service-monitor".to_string(),
+        selector: Selector {
+            match_labels: HashMap::new(),
+            match_expressions: vec![MatchExpression {
+                key: "test".to_string(),
+                operator: Operator::In,
+                values: vec!["test-service".to_string()],
+            }],
+        },
+        endpoints: vec![service_monitor_endpoint],
+        ..Default::default()
+    };
     let alerting_score = HelmPrometheusAlertingScore {
         receivers: vec![Box::new(discord_receiver)],
         rules: vec![Box::new(additional_rules), Box::new(additional_rules2)],
+        service_monitors: vec![service_monitor],
     };
     let mut maestro = Maestro::<K8sAnywhereTopology>::initialize(
         Inventory::autoload(),