amberjs 1.17.0

// Reconciler implementation for Operator Controller
// Handles the actual reconciliation logic for cluster and workload resources

use std::sync::Arc;

use super::super::crd::{
    AmberCluster, AmberWorkload, ClusterPhase, Condition, ConditionStatus, ConditionType,
    WorkloadPhase,
};
use k8s_openapi::api::apps::v1::{Deployment, StatefulSet};
use kube::{Api, Client, ResourceExt};
use tracing::{debug, error, info, warn};
/// Reconciler for managing resource reconciliation
pub struct Reconciler {
    /// Kubernetes client
    client: Client,
}
impl Reconciler {
    /// Create a new reconciler
    pub fn new(client: Client) -> Self {
        Self { client }
    }
    /// Reconcile AmberCluster
    pub async fn reconcile_cluster(
        &self,
        cluster: Arc<AmberCluster>,
    ) -> Result<ReconcileResult, super::controller::Error> {
        let start_time: _ = Instant::now();
        let name: _ = cluster.name_any();
        let namespace: _ = cluster.namespace().unwrap_or_default();
        info!(
            "Starting reconciliation for AmberCluster: {} in {}",
            name, namespace
        );
        // Get current state
        let current_state: _ = self.get_current_state(&cluster).await?;
        // Calculate desired state
        let desired_state: _ = self.calculate_desired_state(&cluster)?;
        // Calculate diff
        let diff: _ = self.calculate_diff(&current_state, &desired_state)?;
        debug!("Reconciliation diff for {}: {:?}", name, diff);
        // Apply changes if needed
        if !diff.is_empty() {
            self.apply_changes(&cluster, &diff).await?;
        }
        // Update status
        self.update_status(&cluster, &current_state).await?;
        let elapsed: _ = start_time.elapsed();
        debug!("Completed reconciliation for {} in {:?}", name, elapsed);
        Ok(ReconcileResult {
            requeue_after: Some(Duration::from_secs(30)),
            message: "Reconciliation completed successfully".to_string(),
        })
    }
    /// Reconcile AmberWorkload
    pub async fn reconcile_workload(
        &self,
        workload: Arc<AmberWorkload>,
    ) -> Result<ReconcileResult, super::controller::Error> {
        let start_time: _ = Instant::now();
        let name: _ = workload.name_any();
        let namespace: _ = workload.namespace().unwrap_or_default();
        info!(
            "Starting reconciliation for AmberWorkload: {} in {}",
            name, namespace
        );
        // Get current state
        let current_state: _ = self.get_workload_current_state(&workload).await?;
        // Calculate desired state
        let desired_state: _ = self.calculate_workload_desired_state(&workload)?;
        // Calculate diff
        let diff: _ = self.calculate_workload_diff(&current_state, &desired_state)?;
        debug!("Reconciliation diff for {}: {:?}", name, diff);
        // Apply changes if needed
        if !diff.is_empty() {
            self.apply_workload_changes(&workload, &diff).await?;
        }
        // Update status
        self.update_workload_status(&workload, &current_state)
            .await?;
        let elapsed: _ = start_time.elapsed();
        debug!("Completed reconciliation for {} in {:?}", name, elapsed);
        Ok(ReconcileResult {
            requeue_after: Some(Duration::from_secs(30)),
            message: "Reconciliation completed successfully".to_string(),
        })
    }
    /// Get current state of cluster
    async fn get_current_state(
        &self,
        cluster: &AmberCluster,
    ) -> Result<ClusterState, super::controller::Error> {
        let namespace: _ = cluster.namespace().unwrap_or_default();
        // Create API instances
        let statefulsets: _ = Api::<StatefulSet>::namespaced(self.client.clone(), &namespace);
        // Check StatefulSet status
        let statefulset: _ = statefulsets.get(&cluster.name_any()).await?;
        let ready_replicas: _ = statefulset
            .status
            .as_ref()
            .and_then(|s| s.ready_replicas)
            .unwrap_or(0) as u32;
        let replicas: _ = statefulset
            .spec
            .as_ref()
            .and_then(|s| s.replicas)
            .unwrap_or(0) as u32;
        // Check Service status
        let services: _ =
            Api::<k8s_openapi::api::core::v1::Service>::namespaced(self.client.clone(), &namespace);
        let _service: _ = services.get(&cluster.name_any()).await?;
        // Determine phase based on ready replicas
        let phase: _ = if ready_replicas == 0 {
            ClusterPhase::Pending
        } else if ready_replicas < replicas {
            ClusterPhase::Creating
        } else {
            ClusterPhase::Running
        };
        Ok(ClusterState {
            phase,
            ready_replicas,
            total_replicas: replicas,
            conditions: vec![Condition {
                condition_type: ConditionType::Ready,
                status: if ready_replicas == replicas {
                    ConditionStatus::True
                } else {
                    ConditionStatus::False
                },
                last_probe_time: Some(chrono::Utc::now().to_rfc3339()),
                last_transition_time: Some(chrono::Utc::now().to_rfc3339()),
                reason: Some("Reconciling".to_string()),
                message: Some(format!("{}/{} replicas ready", ready_replicas, replicas)),
            }],
        })
    }
    /// Calculate desired state for cluster
    fn calculate_desired_state(
        &self,
        cluster: &AmberCluster,
    ) -> Result<ClusterState, super::controller::Error> {
        Ok(ClusterState {
            phase: ClusterPhase::Running,
            ready_replicas: cluster.spec.nodes,
            total_replicas: cluster.spec.nodes,
            conditions: vec![Condition {
                condition_type: ConditionType::Ready,
                status: ConditionStatus::True,
                last_probe_time: Some(chrono::Utc::now().to_rfc3339()),
                last_transition_time: Some(chrono::Utc::now().to_rfc3339()),
                reason: Some("AllReplicasReady".to_string()),
                message: Some(format!("All {} replicas are ready", cluster.spec.nodes)),
            }],
        })
    }
    /// Calculate diff between current and desired state
    fn calculate_diff(
        &self,
        current: &ClusterState,
        desired: &ClusterState,
    ) -> Result<ClusterDiff, super::controller::Error> {
        Ok(ClusterDiff {
            needs_update: current.phase != desired.phase
                || current.ready_replicas != desired.ready_replicas,
            needs_scale: current.total_replicas != desired.total_replicas,
        })
    }
    /// Apply changes to cluster
    async fn apply_changes(
        &self,
        cluster: &AmberCluster,
        diff: &ClusterDiff,
    ) -> Result<(), super::controller::Error> {
        if diff.needs_scale {
            info!(
                "Scaling cluster {} from {} to {} replicas",
                cluster.name_any(),
                cluster.spec.nodes,
                cluster.spec.nodes
            );
            // TODO: Implement scaling logic
        }
        Ok(())
    }
    /// Update cluster status
    async fn update_status(
        &self,
        cluster: &AmberCluster,
        state: &ClusterState,
    ) -> Result<(), super::controller::Error> {
        // TODO: Implement status update
        Ok(())
    }
    /// Get current state of workload
    async fn get_workload_current_state(
        &self,
        workload: &AmberWorkload,
    ) -> Result<WorkloadState, super::controller::Error> {
        let namespace: _ = workload.namespace().unwrap_or_default();
        // Create API instance
        let deployments: _ = Api::<Deployment>::namespaced(self.client.clone(), &namespace);
        // Check Deployment status
        let deployment: _ = deployments.get(&workload.name_any()).await?;
        let ready_replicas: _ = deployment
            .status
            .as_ref()
            .and_then(|s| s.ready_replicas)
            .unwrap_or(0) as u32;
        let replicas: _ = deployment
            .spec
            .as_ref()
            .and_then(|s| s.replicas)
            .unwrap_or(0) as u32;
        let phase: _ = if ready_replicas == 0 {
            WorkloadPhase::Pending
        } else if ready_replicas < replicas {
            WorkloadPhase::Creating
        } else {
            WorkloadPhase::Running
        };
        Ok(WorkloadState {
            phase,
            ready_replicas,
            total_replicas: replicas,
            conditions: vec![],
        })
    }
    /// Calculate desired state for workload
    fn calculate_workload_desired_state(
        &self,
        workload: &AmberWorkload,
    ) -> Result<WorkloadState, super::controller::Error> {
        Ok(WorkloadState {
            phase: WorkloadPhase::Running,
            ready_replicas: workload.spec.replicas,
            total_replicas: workload.spec.replicas,
            conditions: vec![],
        })
    }
    /// Calculate diff between current and desired workload state
    fn calculate_workload_diff(
        &self,
        current: &WorkloadState,
        desired: &WorkloadState,
    ) -> Result<WorkloadDiff, super::controller::Error> {
        Ok(WorkloadDiff {
            needs_update: current.phase != desired.phase
                || current.ready_replicas != desired.ready_replicas,
            needs_scale: current.total_replicas != desired.total_replicas,
        })
    }
    /// Apply changes to workload
    async fn apply_workload_changes(
        &self,
        workload: &AmberWorkload,
        diff: &WorkloadDiff,
    ) -> Result<(), super::controller::Error> {
        if diff.needs_scale {
            info!(
                "Scaling workload {} from {} to {} replicas",
                workload.name_any(),
                workload.spec.replicas,
                workload.spec.replicas
            );
            // TODO: Implement scaling logic
        }
        Ok(())
    }
    /// Update workload status
    async fn update_workload_status(
        &self,
        workload: &AmberWorkload,
        state: &WorkloadState,
    ) -> Result<(), super::controller::Error> {
        // TODO: Implement status update
        Ok(())
    }
}
/// Cluster state representation
#[derive(Debug, Clone)]
pub struct ClusterState {
    pub phase: ClusterPhase,
    pub ready_replicas: u32,
    pub total_replicas: u32,
    pub conditions: Vec<Condition>,
}
/// Cluster diff representation
#[derive(Debug, Clone)]
pub struct ClusterDiff {
    pub needs_update: bool,
    pub needs_scale: bool,
}
impl ClusterDiff {
    pub fn is_empty(&self) -> bool {
        !self.needs_update && !self.needs_scale
    }
}
/// Workload state representation
#[derive(Debug, Clone)]
pub struct WorkloadState {
    pub phase: WorkloadPhase,
    pub ready_replicas: u32,
    pub total_replicas: u32,
    pub conditions: Vec<Condition>,
}
/// Workload diff representation
#[derive(Debug, Clone)]
pub struct WorkloadDiff {
    pub needs_update: bool,
    pub needs_scale: bool,
}
impl WorkloadDiff {
    pub fn is_empty(&self) -> bool {
        !self.needs_update && !self.needs_scale
    }
}
/// Reconciliation result
pub struct ReconcileResult {
    pub requeue_after: Option<Duration>,
    pub message: String,
}
#[cfg(test)]
mod tests {
    use super::*;
    use std::collections::{BTreeMap, HashMap};
    use std::time::{Duration, Instant};
    #[test]
    fn test_cluster_diff_empty() {
        let diff: _ = ClusterDiff {
            needs_update: false,
            needs_scale: false,
        };
        assert!(diff.is_empty());
    }
    #[test]
    fn test_cluster_diff_not_empty() {
        let diff: _ = ClusterDiff {
            needs_update: true,
            needs_scale: false,
        };
        assert!(!diff.is_empty());
    }
    #[test]
    fn test_workload_diff_empty() {
        let diff: _ = WorkloadDiff {
            needs_update: false,
            needs_scale: false,
        };
        assert!(diff.is_empty());
    }
}