Implement Cortex support for Pods

Tiltfile

@@ -7,7 +7,7 @@
 analytics_settings(False)
 
 # Use the ACTIVE_DEPLOYMENTS env var to select which Cortex bundles to deploy.
-ACTIVE_DEPLOYMENTS_ENV = os.getenv('ACTIVE_DEPLOYMENTS', 'nova,manila,cinder,ironcore')
+ACTIVE_DEPLOYMENTS_ENV = os.getenv('ACTIVE_DEPLOYMENTS', 'nova,manila,cinder,ironcore,pods')
 if ACTIVE_DEPLOYMENTS_ENV == "":
     ACTIVE_DEPLOYMENTS = [] # Catch "".split(",") = [""]
 else:
@@ -49,6 +49,7 @@ bundle_charts = [
     ('helm/bundles/cortex-manila', 'cortex-manila'),
     ('helm/bundles/cortex-cinder', 'cortex-cinder'),
     ('helm/bundles/cortex-ironcore', 'cortex-ironcore'),
+    ('helm/bundles/cortex-pods', 'cortex-pods'),
 ]
 dep_charts = {
     'cortex-crds': [
@@ -70,6 +71,10 @@ dep_charts = {
         ('helm/library/cortex-postgres', 'cortex-postgres'),
         ('dist/chart', 'cortex'),
     ],
+    'cortex-pods': [
+        ('helm/library/cortex-postgres', 'cortex-postgres'),
+        ('dist/chart', 'cortex'),
+    ],
 }
 
 for (bundle_chart_path, bundle_chart_name) in bundle_charts:
@@ -106,6 +111,10 @@ k8s_yaml(helm('./helm/bundles/cortex-crds', name='cortex-crds', set=[
     'cortex.rbac.ironcore.enable=true',
     # Tilt is weird and thus we need to set this here even when its provided in the values.
     'cortex.namePrefix=cortex-ironcore',
+
+    'cortex.crd.pods.enable=true',
+    'cortex.rbac.pods.enable=true',
+    'cortex.namePrefix=cortex-pods',
 ]))
 
 if 'nova' in ACTIVE_DEPLOYMENTS:
@@ -171,6 +180,15 @@ if 'ironcore' in ACTIVE_DEPLOYMENTS:
     k8s_yaml('samples/ironcore/machineclass.yaml')
     k8s_yaml('samples/ironcore/machine.yaml')
 
+if 'pods' in ACTIVE_DEPLOYMENTS:
+    print("Activating Cortex Pods bundle")
+    k8s_yaml(helm('./helm/bundles/cortex-pods', name='cortex-pods', values=tilt_values),)
+    k8s_resource('cortex-pods-controller-manager', labels=['Cortex-Pods'])
+    # Deploy example resources
+    k8s_yaml('samples/pods/node.yaml')
+    k8s_yaml('samples/pods/pod.yaml')
+    k8s_resource('test-pod', labels=['Cortex-Pods'])
+
 ########### Dev Dependencies
 local('sh helm/sync.sh helm/dev/cortex-prometheus-operator')
 k8s_yaml(helm('./helm/dev/cortex-prometheus-operator', name='cortex-prometheus-operator')) # Operator

api/delegation/pods/messages.go

@@ -0,0 +1,33 @@
+// Copyright 2025 SAP SE
+// SPDX-License-Identifier: Apache-2.0
+
+package pods
+
+import (
+	"log/slog"
+
+	corev1 "k8s.io/api/core/v1"
+)
+
+type PodPipelineRequest struct {
+	// The available nodes.
+	Nodes []corev1.Node `json:"nodes"`
+}
+
+func (r PodPipelineRequest) GetSubjects() []string {
+	hosts := make([]string, len(r.Nodes))
+	for i, host := range r.Nodes {
+		hosts[i] = host.Name
+	}
+	return hosts
+}
+func (r PodPipelineRequest) GetWeights() map[string]float64 {
+	weights := make(map[string]float64, len(r.Nodes))
+	for _, node := range r.Nodes {
+		weights[node.Name] = 0.0
+	}
+	return weights
+}
+func (r PodPipelineRequest) GetTraceLogArgs() []slog.Attr {
+	return []slog.Attr{}
+}

api/v1alpha1/decision_types.go

@@ -23,6 +23,8 @@ const (
 	DecisionTypeManilaShare DecisionType = "manila-share"
 	// The decision was created by spawning an ironcore machine.
 	DecisionTypeIroncoreMachine DecisionType = "ironcore-machine"
+	// The decision was created for a pod.
+	DecisionTypePod DecisionType = "pod"
 )
 
 type DecisionSpec struct {
@@ -53,6 +55,9 @@ type DecisionSpec struct {
 	// If the type is "machine", this field contains the machine reference.
 	// +kubebuilder:validation:Optional
 	MachineRef *corev1.ObjectReference `json:"machineRef,omitempty"`
+	// If the type is "pod", this field contains the pod reference.
+	// +kubebuilder:validation:Optional
+	PodRef *corev1.ObjectReference `json:"podRef,omitempty"`
 }
 
 type StepResult struct {

cmd/main.go

@@ -45,6 +45,7 @@ import (
 	decisionsmachines "github.com/cobaltcore-dev/cortex/internal/scheduling/decisions/machines"
 	decisionsmanila "github.com/cobaltcore-dev/cortex/internal/scheduling/decisions/manila"
 	decisionsnova "github.com/cobaltcore-dev/cortex/internal/scheduling/decisions/nova"
+	decisionpods "github.com/cobaltcore-dev/cortex/internal/scheduling/decisions/pods"
 	deschedulingnova "github.com/cobaltcore-dev/cortex/internal/scheduling/descheduling/nova"
 	cindere2e "github.com/cobaltcore-dev/cortex/internal/scheduling/e2e/cinder"
 	manilae2e "github.com/cobaltcore-dev/cortex/internal/scheduling/e2e/manila"
@@ -372,6 +373,19 @@ func main() {
 			os.Exit(1)
 		}
 	}
+	if slices.Contains(config.EnabledControllers, "pods-decisions-pipeline-controller") {
+		controller := &decisionpods.DecisionPipelineController{
+			Monitor: pipelineMonitor,
+			Conf:    config,
+		}
+		// Inferred through the base controller.
+		controller.Client = multiclusterClient
+		controller.OperatorName = config.Operator
+		if err := (controller).SetupWithManager(mgr, multiclusterClient); err != nil {
+			setupLog.Error(err, "unable to create controller", "controller", "DecisionReconciler")
+			os.Exit(1)
+		}
+	}
 	if slices.Contains(config.EnabledControllers, "explanation-controller") {
 		// Setup a controller which will reconcile the history and explanation for
 		// decision resources.

config/crd/bases/cortex.cloud_decisions.yaml

@@ -172,6 +172,49 @@ spec:
                     type: string
                 type: object
                 x-kubernetes-map-type: atomic
+              podRef:
+                description: If the type is "pod", this field contains the pod reference.
+                properties:
+                  apiVersion:
+                    description: API version of the referent.
+                    type: string
+                  fieldPath:
+                    description: |-
+                      If referring to a piece of an object instead of an entire object, this string
+                      should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2].
+                      For example, if the object reference is to a container within a pod, this would take on a value like:
+                      "spec.containers{name}" (where "name" refers to the name of the container that triggered
+                      the event) or if no container name is specified "spec.containers[2]" (container with
+                      index 2 in this pod). This syntax is chosen only to have some well-defined way of
+                      referencing a part of an object.
+                    type: string
+                  kind:
+                    description: |-
+                      Kind of the referent.
+                      More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+                    type: string
+                  name:
+                    description: |-
+                      Name of the referent.
+                      More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
+                    type: string
+                  namespace:
+                    description: |-
+                      Namespace of the referent.
+                      More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
+                    type: string
+                  resourceVersion:
+                    description: |-
+                      Specific resourceVersion to which this reference is made, if any.
+                      More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#concurrency-control-and-consistency
+                    type: string
+                  uid:
+                    description: |-
+                      UID of the referent.
+                      More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#uids
+                    type: string
+                type: object
+                x-kubernetes-map-type: atomic
               resourceID:
                 description: |-
                   An identifier for the underlying resource to be scheduled.