feat: harmony now defaults to using local k3d cluster. Also created OCICompliant: Application trait to make building images cleaner

examples/rust/src/main.rs

@@ -1,20 +1,27 @@
+use std::sync::Arc;
+
 use harmony::{
     inventory::Inventory,
     maestro::Maestro,
-    modules::application::{RustWebappScore, features::ContinuousDelivery},
+    modules::application::{RustWebapp, RustWebappScore, features::ContinuousDelivery},
     topology::{K8sAnywhereTopology, Url},
 };
 
 #[tokio::main]
 async fn main() {
+    env_logger::init();
+    let application = RustWebapp {
+        name: "Example Harmony Rust Webapp".to_string(),
+    };
     let app = RustWebappScore {
         name: "Example Rust Webapp".to_string(),
         domain: Url::Url(url::Url::parse("https://rustapp.harmony.example.com").unwrap()),
-        features: vec![Box::new(ContinuousDelivery {})],
+        features: vec![Box::new(ContinuousDelivery { application: Arc::new(application.clone()) })],
+        application,
     };
 
     let topology = K8sAnywhereTopology::from_env();
-    let mut maestro = Maestro::new(Inventory::autoload(), topology);
+    let mut maestro = Maestro::initialize(Inventory::autoload(), topology).await.unwrap();
     maestro.register_all(vec![Box::new(app)]);
     harmony_cli::init(maestro, None).await.unwrap();
 }

harmony/src/domain/maestro/mod.rs

@@ -19,7 +19,7 @@ pub struct Maestro<T: Topology> {
 }
 
 impl<T: Topology> Maestro<T> {
-    pub fn new(inventory: Inventory, topology: T) -> Self {
+    fn new(inventory: Inventory, topology: T) -> Self {
         Self {
             inventory,
             topology,

harmony/src/domain/topology/k8s_anywhere.rs

@@ -123,39 +123,47 @@ impl K8sAnywhereTopology {
     async fn try_get_or_install_k8s_client(&self) -> Result<Option<K8sState>, InterpretError> {
         let k8s_anywhere_config = &self.config;
 
-        if let Some(kubeconfig) = &k8s_anywhere_config.kubeconfig {
-            debug!("Loading kubeconfig {kubeconfig}");
-            match self.try_load_kubeconfig(&kubeconfig).await {
-                Some(client) => {
-                    return Ok(Some(K8sState {
-                        client: Arc::new(client),
-                        _source: K8sSource::Kubeconfig,
-                        message: format!("Loaded k8s client from kubeconfig {kubeconfig}"),
-                    }));
-                }
-                None => {
-                    return Err(InterpretError::new(format!(
-                        "Failed to load kubeconfig from {kubeconfig}"
-                    )));
+        // TODO this deserves some refactoring, it is becoming a bit hard to figure out
+        // be careful when making modifications here
+        if k8s_anywhere_config.use_local_k3d {
+            info!("Using local k3d cluster because of use_local_k3d set to true");
+        } else {
+            if let Some(kubeconfig) = &k8s_anywhere_config.kubeconfig {
+                debug!("Loading kubeconfig {kubeconfig}");
+                match self.try_load_kubeconfig(&kubeconfig).await {
+                    Some(client) => {
+                        return Ok(Some(K8sState {
+                            client: Arc::new(client),
+                            _source: K8sSource::Kubeconfig,
+                            message: format!("Loaded k8s client from kubeconfig {kubeconfig}"),
+                        }));
+                    }
+                    None => {
+                        return Err(InterpretError::new(format!(
+                            "Failed to load kubeconfig from {kubeconfig}"
+                        )));
+                    }
                 }
             }
-        }
 
-        if k8s_anywhere_config.use_system_kubeconfig {
-            debug!("Loading system kubeconfig");
-            match self.try_load_system_kubeconfig().await {
-                Some(_client) => todo!(),
-                None => todo!(),
+            if k8s_anywhere_config.use_system_kubeconfig {
+                debug!("Loading system kubeconfig");
+                match self.try_load_system_kubeconfig().await {
+                    Some(_client) => todo!(),
+                    None => todo!(),
+                }
             }
-        }
 
-        info!("No kubernetes configuration found");
+            info!("No kubernetes configuration found");
+        }
 
         if !k8s_anywhere_config.autoinstall {
+            debug!("Autoinstall confirmation prompt");
             let confirmation = Confirm::new( "Harmony autoinstallation is not activated, do you wish to launch autoinstallation? : ")
                 .with_default(false)
                 .prompt()
                 .expect("Unexpected prompt error");
+            debug!("Autoinstall confirmation {confirmation}");
 
             if !confirmation {
                 warn!(
@@ -229,8 +237,15 @@ pub struct K8sAnywhereConfig {
     ///
     /// When enabled, autoinstall will setup a K3D cluster on the localhost. https://k3d.io/stable/
     ///
-    /// Default: true
+    /// Default: false
     pub autoinstall: bool,
+
+    /// Whether to use local k3d cluster.
+    ///
+    /// Takes precedence over other options, useful to avoid messing up a remote cluster by mistake
+    ///
+    /// default: true
+    pub use_local_k3d: bool,
 }
 
 impl K8sAnywhereConfig {
@@ -241,6 +256,8 @@ impl K8sAnywhereConfig {
                 .map_or_else(|_| false, |v| v.parse().ok().unwrap_or(false)),
             autoinstall: std::env::var("HARMONY_AUTOINSTALL")
                 .map_or_else(|_| false, |v| v.parse().ok().unwrap_or(false)),
+            use_local_k3d: std::env::var("HARMONY_USE_LOCAL_K3D")
+                .map_or_else(|_| true, |v| v.parse().ok().unwrap_or(true)),
         }
     }
 }

harmony/src/modules/application/feature.rs

@@ -2,6 +2,8 @@ use async_trait::async_trait;
 use serde::Serialize;
 
 use crate::topology::Topology;
+
+use super::Application;
 /// An ApplicationFeature provided by harmony, such as Backups, Monitoring, MultisiteAvailability,
 /// ContinuousIntegration, ContinuousDelivery
 #[async_trait]

harmony/src/modules/application/features/continuous_delivery.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use log::info;
 use serde_json::Value;
@@ -5,7 +7,10 @@ use serde_json::Value;
 use crate::{
     data::Version,
     inventory::Inventory,
-    modules::{application::ApplicationFeature, helm::chart::HelmChartScore},
+    modules::{
+        application::{Application, ApplicationFeature, OCICompliant},
+        helm::chart::HelmChartScore,
+    },
     score::Score,
     topology::{HelmCommand, Topology, Url},
 };
@@ -38,11 +43,17 @@ use crate::{
 /// - ArgoCD to install/upgrade/rollback/inspect k8s resources
 /// - Kubernetes for runtime orchestration
 #[derive(Debug, Default, Clone)]
-pub struct ContinuousDelivery {}
+pub struct ContinuousDelivery<A: OCICompliant> {
+    pub application: Arc<A>,
+}
 
 #[async_trait]
-impl<T: Topology + HelmCommand + 'static> ApplicationFeature<T> for ContinuousDelivery {
+impl<A: OCICompliant + Clone + 'static, T: Topology + HelmCommand + 'static> ApplicationFeature<T>
+    for ContinuousDelivery<A>
+{
     async fn ensure_installed(&self, topology: &T) -> Result<(), String> {
+        let image = self.application.build_push_oci_image().await?;
+
         info!("Installing ContinuousDelivery feature");
         let cd_server = HelmChartScore {
             namespace: todo!(

harmony/src/modules/application/features/endpoint.rs

@@ -2,7 +2,7 @@ use async_trait::async_trait;
 use log::info;
 
 use crate::{
-    modules::application::ApplicationFeature,
+    modules::application::{Application, ApplicationFeature},
     topology::{K8sclient, Topology},
 };
 

harmony/src/modules/application/features/monitoring.rs

@@ -2,7 +2,7 @@ use async_trait::async_trait;
 use log::info;
 
 use crate::{
-    modules::application::ApplicationFeature,
+    modules::application::{Application, ApplicationFeature},
     topology::{HelmCommand, Topology},
 };
 

harmony/src/modules/application/mod.rs

@@ -1,6 +1,10 @@
 mod feature;
 pub mod features;
 mod rust;
+pub mod oci;
+use std::sync::Arc;
+
+pub use oci::*;
 pub use feature::*;
 use log::info;
 pub use rust::*;
@@ -21,7 +25,7 @@ pub trait Application: std::fmt::Debug + Send + Sync {
 #[derive(Debug)]
 pub struct ApplicationInterpret<T: Topology + std::fmt::Debug> {
     features: Vec<Box<dyn ApplicationFeature<T>>>,
-    application: Box<dyn Application>,
+    application: Arc<Box<dyn Application>>,
 }
 
 #[async_trait]

harmony/src/modules/application/oci.rs

@@ -0,0 +1,8 @@
+use async_trait::async_trait;
+
+use super::Application;
+
+#[async_trait]
+pub trait OCICompliant: Application {
+    async fn build_push_oci_image(&self) -> Result<String, String>; // TODO consider using oci-spec and friends crates here
+}

harmony/src/modules/application/rust.rs

@@ -1,3 +1,6 @@
+use std::sync::Arc;
+
+use async_trait::async_trait;
 use serde::Serialize;
 
 use crate::{
@@ -5,22 +8,21 @@ use crate::{
     topology::{Topology, Url},
 };
 
-use super::{Application, ApplicationFeature, ApplicationInterpret};
+use super::{Application, ApplicationFeature, ApplicationInterpret, OCICompliant};
 
 #[derive(Debug, Serialize, Clone)]
 pub struct RustWebappScore<T: Topology + Clone + Serialize> {
     pub name: String,
     pub domain: Url,
     pub features: Vec<Box<dyn ApplicationFeature<T>>>,
+    pub application: RustWebapp,
 }
 
 impl<T: Topology + std::fmt::Debug + Clone + Serialize + 'static> Score<T> for RustWebappScore<T> {
     fn create_interpret(&self) -> Box<dyn crate::interpret::Interpret<T>> {
         Box::new(ApplicationInterpret {
             features: self.features.clone(),
-            application: Box::new(RustWebapp {
-                name: self.name.clone(),
-            }),
+            application: Arc::new(Box::new(self.application.clone())),
         })
     }
 
@@ -29,9 +31,9 @@ impl<T: Topology + std::fmt::Debug + Clone + Serialize + 'static> Score<T> for R
     }
 }
 
-#[derive(Debug)]
-struct RustWebapp {
-    name: String,
+#[derive(Debug, Clone, Serialize)]
+pub struct RustWebapp {
+    pub name: String,
 }
 
 impl Application for RustWebapp {
@@ -39,3 +41,10 @@ impl Application for RustWebapp {
         self.name.clone()
     }
 }
+
+#[async_trait]
+impl OCICompliant for RustWebapp {
+    async fn build_push_oci_image(&self) -> Result<String, String> {
+        todo!()
+    }
+}