feat: added a monitoring stack that works with openshift/okd (#134)

* Okd needs to use the cluster observability operator in order to deploy namespaced prometheuses and alertmanagers
* allow namespaced deployments of alertmanager and prometheuses as well as its associated rules, etc.

Co-authored-by: Ian Letourneau <ian@noma.to>
Reviewed-on: NationTech/harmony#134
Co-authored-by: Willem <wrolleman@nationtech.io>
Co-committed-by: Willem <wrolleman@nationtech.io>

examples/rhob_application_monitoring/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "rhob-application-monitoring"
+edition = "2024"
+version.workspace = true
+readme.workspace = true
+license.workspace = true
+
+[dependencies]
+harmony = { path = "../../harmony" }
+harmony_cli = { path = "../../harmony_cli" }
+harmony_types = { path = "../../harmony_types" }
+harmony_macros = { path = "../../harmony_macros" }
+tokio = { workspace = true }
+log = { workspace = true }
+env_logger = { workspace = true }
+url = { workspace = true }
+base64.workspace = true

examples/rhob_application_monitoring/src/main.rs

@@ -0,0 +1,50 @@
+use std::{path::PathBuf, sync::Arc};
+
+use harmony::{
+    inventory::Inventory,
+    modules::{
+        application::{
+            ApplicationScore, RustWebFramework, RustWebapp,
+            features::rhob_monitoring::RHOBMonitoring,
+        },
+        monitoring::alert_channel::discord_alert_channel::DiscordWebhook,
+    },
+    topology::K8sAnywhereTopology,
+};
+use harmony_types::net::Url;
+
+#[tokio::main]
+async fn main() {
+    let application = Arc::new(RustWebapp {
+        name: "test-rhob-monitoring".to_string(),
+        domain: Url::Url(url::Url::parse("htps://some-fake-url").unwrap()),
+        project_root: PathBuf::from("./webapp"), // Relative from 'harmony-path' param
+        framework: Some(RustWebFramework::Leptos),
+        service_port: 3000,
+    });
+
+    let discord_receiver = DiscordWebhook {
+        name: "test-discord".to_string(),
+        url: Url::Url(url::Url::parse("https://discord.doesnt.exist.com").unwrap()),
+    };
+
+    let app = ApplicationScore {
+        features: vec![
+            Box::new(RHOBMonitoring {
+                application: application.clone(),
+                alert_receiver: vec![Box::new(discord_receiver)],
+            }),
+            // TODO add backups, multisite ha, etc
+        ],
+        application,
+    };
+
+    harmony_cli::run(
+        Inventory::autoload(),
+        K8sAnywhereTopology::from_env(),
+        vec![Box::new(app)],
+        None,
+    )
+    .await
+    .unwrap();
+}