added file

harmony/src/domain/topology/monitoring_alerting.rs

@@ -0,0 +1,59 @@
+use serde::Serialize;
+use tokio::sync::OnceCell;
+
+use async_trait::async_trait;
+
+use crate::interpret::{InterpretError, Outcome};
+
+use super::{HelmCommand, Topology};
+
+#[derive(Clone, Debug)]
+struct MonitoringState {
+    message: String,
+}
+
+#[derive(Clone, Debug)]
+pub struct MonitoringAlertingTopology {
+    monitoring_state: OnceCell<Option<MonitoringState>>,
+}
+
+
+impl MonitoringAlertingTopology {
+    pub fn new() -> Self {
+        Self {
+            monitoring_state: OnceCell::new(),
+        }
+    }
+    fn get_monitoring_state(&self) -> Result<Option<MonitoringState>, InterpretError> {
+        let state = MonitoringState {
+            message: "monitoring stack not installed".to_string(),
+        };
+        Ok(Some(state))
+    }
+}
+
+#[async_trait]
+impl Topology for MonitoringAlertingTopology {
+    fn name(&self) -> &str {
+        "MonitoringAlertingTopology"
+    }
+
+    async fn ensure_ready(&self) -> Result<Outcome, InterpretError> {
+        let monitoring_state = self
+            .monitoring_state
+            .get_or_try_init(|| async { self.get_monitoring_state() })
+            .await?;
+
+        if monitoring_state.is_some() {
+            Ok(Outcome::success(
+                "Monitoring stack already installed".to_string(),
+            ))
+        } else {
+            Ok(Outcome::success(
+                "Monitoring stack not installed".to_string(),
+            ))
+        }
+    }
+}
+
+impl HelmCommand for MonitoringAlertingTopology {}