fix: commitment change API integration test

Makefile

@@ -28,6 +28,17 @@ lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes
 test: ## Run all tests.
 	go test ./...
 
+.PHONY: testsum
+testsum: gotestsum ## Run all tests (clean output for passing, verbose for failing). Options: WATCH=1, RUN=<pattern>, PACKAGE=<pkg>, FORMAT=<fmt> (e.g., standard-verbose for all output)
+	$(GOTESTSUM) \
+		$(if $(WATCH),--watch) \
+		--format $(if $(FORMAT),$(FORMAT),testname) \
+		--hide-summary=all \
+		-- \
+		$(if $(VERBOSE),-v) \
+		$(if $(RUN),-run $(RUN)) \
+		$(if $(PACKAGE),$(PACKAGE),./...)
+
 .PHONY: generate
 generate: deepcopy crds ## Regenerate CRDs and DeepCopy after API type changes.
 
@@ -45,9 +56,11 @@ $(LOCALBIN):
 
 CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
 GOLANGCI_LINT = $(LOCALBIN)/golangci-lint
+GOTESTSUM = $(LOCALBIN)/gotestsum
 
 CONTROLLER_TOOLS_VERSION ?= v0.20.0
 GOLANGCI_LINT_VERSION ?= v2.9.0
+GOTESTSUM_VERSION ?= v1.13.0
 
 .PHONY: controller-gen
 controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary.
@@ -59,6 +72,11 @@ golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
 $(GOLANGCI_LINT): $(LOCALBIN)
 	$(call go-install-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/v2/cmd/golangci-lint,$(GOLANGCI_LINT_VERSION))
 
+.PHONY: gotestsum
+gotestsum: $(GOTESTSUM) ## Download gotestsum locally if necessary.
+$(GOTESTSUM): $(LOCALBIN)
+	$(call go-install-tool,$(GOTESTSUM),gotest.tools/gotestsum,$(GOTESTSUM_VERSION))
+
 # go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
 # $1 - target path with name of binary
 # $2 - package url which can be installed

api/v1alpha1/reservation_types.go

@@ -54,6 +54,10 @@ type CommittedResourceReservationSpec struct {
 	// +kubebuilder:validation:Optional
 	ResourceName string `json:"resourceName,omitempty"`
 
+	// CommitmentUUID is the UUID of the commitment that this reservation corresponds to.
+	// +kubebuilder:validation:Optional
+	CommitmentUUID string `json:"commitmentUUID,omitempty"`
+
 	// ResourceGroup is the group/category of the resource (e.g., flavor group for Nova)
 	// +kubebuilder:validation:Optional
 	ResourceGroup string `json:"resourceGroup,omitempty"`

docs/develop.md

@@ -34,6 +34,21 @@ Cortex is developed using the Go programming language. To get started with the d
 
 Run `make` in your terminal from the cortex root directory to perform linting and testing tasks.
 
+### Working on Tests
+
+```bash
+# Watch mode for continuous testing; print logs for failed tests only
+make testsum WATCH=1
+```
+
+The `testsum` target provides cleaner output by showing only full verbose output for failing tests.
+
+**Available options:**
+- `WATCH=1` - Automatically re-run tests when files change
+- `RUN=<pattern>` - Run specific tests matching the pattern
+- `PACKAGE=<pkg>` - Test specific package(s)
+- `FORMAT=<fmt>` - Change output format (e.g., `standard-verbose` for verbose output on all tests)
+
 ## Helm Charts
 
 Helm charts bundle the application into a package, containing all the [Kubernetes](https://kubernetes.io/docs/tutorials/hello-minikube/) resources needed to run the application. The configuration for the application is specified in the [Helm `values.yaml`](cortex.secrets.example.yaml).

helm/library/cortex/files/crds/cortex.cloud_reservations.yaml

@@ -87,6 +87,10 @@ spec:
                       Key: Workload UUID (VM UUID for Nova, Pod UID for Pods, Machine UID for IronCore, etc.)
                       Value: allocation state and metadata
                     type: object
+                  commitmentUUID:
+                    description: CommitmentUUID is the UUID of the commitment that
+                      this reservation corresponds to.
+                    type: string
                   creator:
                     description: |-
                       Creator identifies the system or component that created this reservation.

internal/scheduling/reservations/commitments/api_change_commitments.go

@@ -9,6 +9,8 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"sort"
+	"strings"
 	"time"
 
 	"github.com/cobaltcore-dev/cortex/api/v1alpha1"
@@ -23,12 +25,24 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
 
+// sortedKeys returns map keys sorted alphabetically for deterministic iteration.
+func sortedKeys[K ~string, V any](m map[K]V) []K {
+	keys := make([]K, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	sort.Slice(keys, func(i, j int) bool {
+		return string(keys[i]) < string(keys[j])
+	})
+	return keys
+}
+
 const (
 	// watchTimeout is how long to wait for all reservations to become ready
-	watchTimeout = 20 * time.Second
+	watchTimeout = 2 * time.Second
 
 	// pollInterval is how frequently to poll reservation status
-	pollInterval = 1 * time.Second
+	pollInterval = 100 * time.Millisecond
 )
 
 // implements POST /v1/change-commitments from Limes LIQUID API:
@@ -99,6 +113,7 @@ func (api *HTTPAPI) processCommitmentChanges(w http.ResponseWriter, log logr.Log
 	ctx := context.Background()
 	manager := NewReservationManager(api.client)
 	requireRollback := false
+	failedCommitments := make(map[string]string) // commitmentUUID to reason for failure, for better response messages in case of rollback
 	log.Info("processing commitment change request", "availabilityZone", req.AZ, "dryRun", req.DryRun, "affectedProjects", len(req.ByProject))
 
 	knowledge := &reservations.FlavorGroupKnowledgeClient{Client: api.client}
@@ -135,8 +150,10 @@ func (api *HTTPAPI) processCommitmentChanges(w http.ResponseWriter, log logr.Log
 	}
 
 ProcessLoop:
-	for projectID, projectChanges := range req.ByProject {
-		for resourceName, resourceChanges := range projectChanges.ByResource {
+	for _, projectID := range sortedKeys(req.ByProject) {
+		projectChanges := req.ByProject[projectID]
+		for _, resourceName := range sortedKeys(projectChanges.ByResource) {
+			resourceChanges := projectChanges.ByResource[resourceName]
 			// Validate resource name pattern (instances_group_*)
 			flavorGroupName, err := getFlavorGroupNameFromResource(string(resourceName))
 			if err != nil {
@@ -157,14 +174,16 @@ ProcessLoop:
 				// Additional per-commitment validation if needed
 				log.Info("processing commitment change", "commitmentUUID", commitment.UUID, "projectID", projectID, "resourceName", resourceName, "oldStatus", commitment.OldStatus.UnwrapOr("none"), "newStatus", commitment.NewStatus.UnwrapOr("none"))
 
+				// TODO add configurable upper limit validation for commitment size (number of instances) to prevent excessive reservation creation
 				// TODO add domain
 
 				// List all committed resource reservations, then filter by name prefix
 				var all_reservations v1alpha1.ReservationList
 				if err := api.client.List(ctx, &all_reservations, client.MatchingLabels{
 					v1alpha1.LabelReservationType: v1alpha1.ReservationTypeLabelCommittedResource,
 				}); err != nil {
-					resp.RejectionReason = fmt.Sprintf("failed to list reservations for commitment %s: %v", commitment.UUID, err)
+					failedCommitments[string(commitment.UUID)] = "failed to list reservations"
+					log.Info(fmt.Sprintf("failed to list reservations for commitment %s: %v", commitment.UUID, err))
 					requireRollback = true
 					break ProcessLoop
 				}
@@ -189,7 +208,8 @@ ProcessLoop:
 				} else {
 					stateBefore, err = FromReservations(existing_reservations.Items)
 					if err != nil {
-						resp.RejectionReason = fmt.Sprintf("failed to get existing state for commitment %s: %v", commitment.UUID, err)
+						failedCommitments[string(commitment.UUID)] = "failed to parse existing commitment reservations"
+						log.Info(fmt.Sprintf("failed to get existing state for commitment %s: %v", commitment.UUID, err))
 						requireRollback = true
 						break ProcessLoop
 					}
@@ -199,7 +219,8 @@ ProcessLoop:
 				// get desired state
 				stateDesired, err := FromChangeCommitmentTargetState(commitment, string(projectID), flavorGroupName, flavorGroup, string(req.AZ))
 				if err != nil {
-					resp.RejectionReason = fmt.Sprintf("failed to get desired state for commitment %s: %v", commitment.UUID, err)
+					failedCommitments[string(commitment.UUID)] = "failed to determine desired commitment state"
+					log.Info(fmt.Sprintf("failed to get desired state for commitment %s: %v", commitment.UUID, err))
 					requireRollback = true
 					break ProcessLoop
 				}
@@ -208,7 +229,8 @@ ProcessLoop:
 
 				touchedReservations, deletedReservations, err := manager.ApplyCommitmentState(ctx, log, stateDesired, flavorGroups, "changeCommitmentsApi")
 				if err != nil {
-					resp.RejectionReason = fmt.Sprintf("failed to apply commitment state for commitment %s: %v", commitment.UUID, err)
+					failedCommitments[string(commitment.UUID)] = "failed to apply commitment state"
+					log.Info(fmt.Sprintf("failed to apply commitment state for commitment %s: %v", commitment.UUID, err))
 					requireRollback = true
 					break ProcessLoop
 				}
@@ -224,17 +246,31 @@ ProcessLoop:
 
 		time_start := time.Now()
 
-		if err := watchReservationsUntilReady(ctx, log, api.client, reservationsToWatch, watchTimeout); err != nil {
+		if failedReservations, errors := watchReservationsUntilReady(ctx, log, api.client, reservationsToWatch, watchTimeout); len(failedReservations) > 0 || len(errors) > 0 {
 			log.Info("reservations failed to become ready, initiating rollback",
-				"reason", err.Error())
-			resp.RejectionReason = fmt.Sprintf("Not all reservations can be fulfilled: %v", err)
+				"failedReservations", len(failedReservations),
+				"errors", errors)
+
+			for _, res := range failedReservations {
+				failedCommitments[res.Spec.CommittedResourceReservation.CommitmentUUID] = "not sufficient capacity"
+			}
 			requireRollback = true
 		}
 
 		log.Info("finished watching reservation", "totalSchedulingTimeSeconds", time.Since(time_start).Seconds())
 	}
 
 	if requireRollback {
+		// Build rejection reason from failed commitments
+		if len(failedCommitments) > 0 {
+			var reasonBuilder strings.Builder
+			reasonBuilder.WriteString(fmt.Sprintf("%d commitment(s) failed to apply: ", len(failedCommitments)))
+			for commitmentUUID, reason := range failedCommitments {
+				reasonBuilder.WriteString(fmt.Sprintf("\n- commitment %s: %s", commitmentUUID, reason))
+			}
+			resp.RejectionReason = reasonBuilder.String()
+		}
+
 		log.Info("rollback of commitment changes")
 		for commitmentUUID, state := range statesBefore {
 			// Rollback to statesBefore for this commitment
@@ -247,16 +283,10 @@ ProcessLoop:
 		}
 
 		log.Info("finished applying rollbacks for commitment changes", "reasonOfRollback", resp.RejectionReason)
-
-		// TODO improve human-readable reasoning based on actual failure, i.e. polish resp.RejectionReason
 		return nil
 	}
 
 	log.Info("commitment changes accepted")
-	if resp.RejectionReason != "" {
-		log.Info("unexpected non-empty rejection reason without rollback", "reason", resp.RejectionReason)
-		resp.RejectionReason = ""
-	}
 	return nil
 }
 
@@ -267,23 +297,27 @@ func watchReservationsUntilReady(
 	k8sClient client.Client,
 	reservations []v1alpha1.Reservation,
 	timeout time.Duration,
-) error {
+) (failedReservations []v1alpha1.Reservation, errors []error) {
 
 	if len(reservations) == 0 {
-		return nil
+		return failedReservations, nil
 	}
 
 	deadline := time.Now().Add(timeout)
 
+	reservationsToWatch := make([]v1alpha1.Reservation, len(reservations))
+	copy(reservationsToWatch, reservations)
+
 	for {
 		if time.Now().After(deadline) {
-			return fmt.Errorf("timeout after %v waiting for reservations to become ready", timeout)
+			errors = append(errors, fmt.Errorf("timeout after %v waiting for reservations to become ready", timeout))
+			return failedReservations, errors
 		}
 
-		allReady := true
-		var notReadyReasons []string
+		allChecked := true
 
-		for _, res := range reservations {
+	check:
+		for i, res := range reservationsToWatch {
 			// Fetch current state
 			var current v1alpha1.Reservation
 			nn := types.NamespacedName{
@@ -292,12 +326,16 @@ func watchReservationsUntilReady(
 			}
 
 			if err := k8sClient.Get(ctx, nn, &current); err != nil {
+				allChecked = false
 				if apierrors.IsNotFound(err) {
-					// Reservation is still in process of being created
-					allReady = false
+					// Reservation is still in process of being created, continue waiting for it
 					continue
 				}
-				return fmt.Errorf("failed to get reservation %s: %w", res.Name, err)
+				// remove reservation from waiting
+				failedReservations = append(failedReservations, res)
+				reservationsToWatch = append(reservationsToWatch[:i], reservationsToWatch[i+1:]...)
+				errors = append(errors, fmt.Errorf("failed to get reservation %s: %w", res.Name, err))
+				break check // break because iterating list was modified
 			}
 
 			// Check Ready condition
@@ -308,37 +346,36 @@ func watchReservationsUntilReady(
 
 			if readyCond == nil {
 				// Condition not set yet, keep waiting
-				allReady = false
-				notReadyReasons = append(notReadyReasons,
-					res.Name+": condition not set")
+				allChecked = false
 				continue
 			}
 
 			switch readyCond.Status {
 			case metav1.ConditionTrue:
 				// This reservation is ready
-				continue
+				// TODO use more than readyCondition
+				allChecked = false
+				reservationsToWatch = append(reservationsToWatch[:i], reservationsToWatch[i+1:]...)
+				break check // break because iterating list was modified
 			case metav1.ConditionFalse:
-				// Explicit failure - stop immediately
-				return fmt.Errorf("reservation %s failed: %s (reason: %s)",
-					res.Name, readyCond.Message, readyCond.Reason)
+				allChecked = false
+				failedReservations = append(failedReservations, res)
+				reservationsToWatch = append(reservationsToWatch[:i], reservationsToWatch[i+1:]...)
+				break check // break because iterating list was modified
 			case metav1.ConditionUnknown:
-				// Still processing
-				allReady = false
-				notReadyReasons = append(notReadyReasons,
-					fmt.Sprintf("%s: %s", res.Name, readyCond.Message))
+				allChecked = false
 			}
 		}
 
-		if allReady {
-			log.Info("all reservations are ready",
-				"count", len(reservations))
-			return nil
+		if allChecked {
+			log.Info("all reservations checked",
+				"failed", len(failedReservations))
+			return failedReservations, errors
 		}
 
 		// Log progress
 		log.Info("waiting for reservations to become ready",
-			"notReady", len(notReadyReasons),
+			"notReady", len(reservationsToWatch),
 			"total", len(reservations),
 			"timeRemaining", time.Until(deadline).Round(time.Second))
 
@@ -347,7 +384,7 @@ func watchReservationsUntilReady(
 		case <-time.After(pollInterval):
 			// Continue polling
 		case <-ctx.Done():
-			return fmt.Errorf("context cancelled while waiting for reservations: %w", ctx.Err())
+			return failedReservations, append(errors, fmt.Errorf("context cancelled while waiting for reservations: %w", ctx.Err()))
 		}
 	}
 }