From 7b8cc85245d42a4a8d6a75a71992cb026052fde5 Mon Sep 17 00:00:00 2001
From: baschno <bastian.schnorbus@gmail.com>
Date: Wed, 5 Feb 2025 20:48:41 +0100
Subject: [PATCH] implementing reconciler

---
 config/rbac/role.yaml                   | 12 +++++
 internal/controller/tdset_controller.go | 60 +++++++++++++++++++++++--
 2 files changed, 69 insertions(+), 3 deletions(-)

diff --git a/config/rbac/role.yaml b/config/rbac/role.yaml
index cb303fd..0b8641a 100644
--- a/config/rbac/role.yaml
+++ b/config/rbac/role.yaml
@@ -4,6 +4,18 @@ kind: ClusterRole
 metadata:
   name: manager-role
 rules:
+- apiGroups:
+  - apps
+  resources:
+  - deployments
+  verbs:
+  - create
+  - delete
+  - get
+  - list
+  - patch
+  - update
+  - watch
 - apiGroups:
   - schedule.rs
   resources:
diff --git a/internal/controller/tdset_controller.go b/internal/controller/tdset_controller.go
index 6f65881..ee0e488 100644
--- a/internal/controller/tdset_controller.go
+++ b/internal/controller/tdset_controller.go
@@ -18,7 +18,9 @@ package controller
 
 import (
 	"context"
+	"time"
 
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/runtime"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -27,6 +29,10 @@ import (
 	schedulev1 "github.com/baschno/tdset-operator/api/v1"
 )
 
+const (
+	DefaultReconciliationInterval = 5
+)
+
 // TDSetReconciler reconciles a TDSet object
 type TDSetReconciler struct {
 	client.Client
@@ -36,6 +42,7 @@ type TDSetReconciler struct {
 // +kubebuilder:rbac:groups=schedule.rs,resources=tdsets,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=schedule.rs,resources=tdsets/status,verbs=get;update;patch
 // +kubebuilder:rbac:groups=schedule.rs,resources=tdsets/finalizers,verbs=update
+// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
 
 // Reconcile is part of the main kubernetes reconciliation loop which aims to
 // move the current state of the cluster closer to the desired state.
@@ -47,12 +54,59 @@ type TDSetReconciler struct {
 // For more details, check Reconcile and its Result here:
 // - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.19.0/pkg/reconcile
 func (r *TDSetReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
-	_ = log.FromContext(ctx)
+	log := log.FromContext(ctx)
 
 	log.Info("Starting reconciliation")
-	// TODO(user): your logic here
 
-	return ctrl.Result{}, nil
+	tdSet := &schedulev1.TDSet{}
+
+	// Get TDSet
+	err := r.GetTDSet(ctx, req, tdSet)
+	if err != nil {
+		if apierrors.IsNotFound(err) {
+			log.Info("TDSet not found - ignoring since object must be deleted")
+
+			return ctrl.Result{}, nil
+		}
+		log.Error(err, "Failed to get TDSet")
+		return ctrl.Result{}, err
+	}
+
+	// Try to set initial status
+	err = r.SetInitialCondition(ctx, req, tdSet)
+	if err != nil {
+		log.Error(err, "Failed to set initial condition")
+		return ctrl.Result{}, err
+	}
+
+	// TODO Delete finalizer
+
+	// Deployment if not exist
+	ok, err := r.DeploymentIfNotExist(ctx, req, tdSet)
+	if err != nil {
+		log.Error(err, "Failed to check deployment for TDSet")
+		return ctrl.Result{}, err
+	}
+	if ok {
+		return ctrl.Result{RequeueAfter: time.Minute}, nil
+	}
+
+	// Update deployment replica if mismatched
+	err = r.UpdateDeploymentReplica(ctx, req, tdSet)
+	if err != nil {
+		log.Log.Error(err, "Failed to update deployment replica for TDSet")
+		return ctrl.Result{}, err
+	}
+
+	interval := DefaultReconciliationInterval
+	if tdSet.Spec.IntervalMint != 0 {
+		interval = int(tdSet.Spec.IntervalMint)
+	}
+
+	log.Info("Reconciliation done", "RequeueAfter", interval)
+
+	return ctrl.Result{RequeueAfter: time.Duration(time.Minute * time.Duration(interval))}, nil
+
 }
 
 // SetupWithManager sets up the controller with the Manager.