🐛 Revert alpha2 crd (#735)

Removed v1alpha2.
Adds 0.5 fields to v1alpha1 as optional.
Update the hub to use v1alpah1.
Updates CR status to support conditions.
The addon controller will perform migration to ensure the
addon.Container is populated.
The task manager will wait until resources have been reconciled.

---

Moved api/reflect/field.go Fields() to new _reflect_ package at the
root.
Added new functions: 
- HasField()
- Select()
- Omit

My main concern was the the task manager is using Select() to restrict
Save() specific fields. The "Error" fields as incorrect (should be
"Errors") and silently didn't update the field.

---

This won't pass CI without operator changes.

---------

Signed-off-by: Jeff Ortel <jortel@redhat.com>

api/addon.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	crd "github.com/konveyor/tackle2-hub/k8s/api/tackle/v1alpha2"
+	crd "github.com/konveyor/tackle2-hub/k8s/api/tackle/v1alpha1"
 	core "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	k8s "sigs.k8s.io/controller-runtime/pkg/client"

api/base.go

@@ -14,10 +14,10 @@ import (
 	"github.com/gin-gonic/gin/binding"
 	liberr "github.com/jortel/go-utils/error"
 	"github.com/jortel/go-utils/logr"
-	"github.com/konveyor/tackle2-hub/api/reflect"
 	"github.com/konveyor/tackle2-hub/api/sort"
 	"github.com/konveyor/tackle2-hub/auth"
 	"github.com/konveyor/tackle2-hub/model"
+	"github.com/konveyor/tackle2-hub/reflect"
 	"gopkg.in/yaml.v2"
 	"gorm.io/gorm"
 	"sigs.k8s.io/controller-runtime/pkg/client"

api/sort/sort.go

@@ -4,7 +4,7 @@ import (
 	"strings"
 
 	"github.com/gin-gonic/gin"
-	"github.com/konveyor/tackle2-hub/api/reflect"
+	"github.com/konveyor/tackle2-hub/reflect"
 	"gorm.io/gorm"
 )
 

api/taskgroup.go

@@ -5,7 +5,7 @@ import (
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	crd "github.com/konveyor/tackle2-hub/k8s/api/tackle/v1alpha2"
+	crd "github.com/konveyor/tackle2-hub/k8s/api/tackle/v1alpha1"
 	"github.com/konveyor/tackle2-hub/model"
 	tasking "github.com/konveyor/tackle2-hub/task"
 	"gorm.io/gorm/clause"

controller/addon.go

@@ -2,13 +2,15 @@ package controller
 
 import (
 	"context"
+	"strings"
 
 	"github.com/go-logr/logr"
 	logr2 "github.com/jortel/go-utils/logr"
-	api "github.com/konveyor/tackle2-hub/k8s/api/tackle/v1alpha2"
+	api "github.com/konveyor/tackle2-hub/k8s/api/tackle/v1alpha1"
 	"github.com/konveyor/tackle2-hub/settings"
 	"gorm.io/gorm"
 	k8serr "k8s.io/apimachinery/pkg/api/errors"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apiserver/pkg/storage/names"
 	"k8s.io/client-go/tools/record"
 	k8s "sigs.k8s.io/controller-runtime/pkg/client"
@@ -32,9 +34,10 @@ var Settings = &settings.Settings
 // Add the controller.
 func Add(mgr manager.Manager, db *gorm.DB) error {
 	reconciler := &Reconciler{
-		Client: mgr.GetClient(),
-		Log:    log,
-		DB:     db,
+		history: make(map[string]byte),
+		Client:  mgr.GetClient(),
+		Log:     log,
+		DB:      db,
 	}
 	cnt, err := controller.New(
 		Name,
@@ -59,15 +62,18 @@ func Add(mgr manager.Manager, db *gorm.DB) error {
 }
 
 // Reconciler reconciles addon CRs.
+// The history is used to ensure resources are reconciled
+// at least once at startup.
 type Reconciler struct {
 	record.EventRecorder
 	k8s.Client
-	DB  *gorm.DB
-	Log logr.Logger
+	DB      *gorm.DB
+	Log     logr.Logger
+	history map[string]byte
 }
 
 // Reconcile a Addon CR.
-// Note: Must not a pointer receiver to ensure that the
+// Note: Must not be a pointer receiver to ensure that the
 // logger and other state is not shared.
 func (r Reconciler) Reconcile(ctx context.Context, request reconcile.Request) (result reconcile.Result, err error) {
 	r.Log = logr2.WithName(
@@ -86,18 +92,23 @@ func (r Reconciler) Reconcile(ctx context.Context, request reconcile.Request) (r
 		}
 		return
 	}
-	// migrate
-	migrated, err := r.alpha2Migration(addon)
-	if migrated || err != nil {
+	_, found := r.history[addon.Name]
+	if found && addon.Reconciled() {
 		return
 	}
-	// changed.
-	err = r.addonChanged(addon)
-	if err != nil {
+	r.history[addon.Name] = 1
+	addon.Status.Conditions = nil
+	addon.Status.ObservedGeneration = addon.Generation
+	// Changed
+	migrated, err := r.addonChanged(addon)
+	if migrated || err != nil {
 		return
 	}
+	// Ready condition.
+	addon.Status.Conditions = append(
+		addon.Status.Conditions,
+		r.ready(addon))
 	// Apply changes.
-	addon.Status.ObservedGeneration = addon.Generation
 	err = r.Status().Update(context.TODO(), addon)
 	if err != nil {
 		return
@@ -106,47 +117,50 @@ func (r Reconciler) Reconcile(ctx context.Context, request reconcile.Request) (r
 	return
 }
 
-// addonChanged an addon has been created/updated.
-func (r *Reconciler) addonChanged(addon *api.Addon) (err error) {
-	return
-}
-
-// addonDeleted an addon has been deleted.
-func (r *Reconciler) addonDeleted(name string) (err error) {
-	return
-}
-
-// alpha2Migration migrates to alpha2.
-func (r *Reconciler) alpha2Migration(addon *api.Addon) (migrated bool, err error) {
-	if addon.Spec.Image != nil {
-		if addon.Spec.Container.Image == "" {
-			addon.Spec.Container.Image = *addon.Spec.Image
+// ready returns the ready condition.
+func (r *Reconciler) ready(addon *api.Addon) (ready v1.Condition) {
+	ready = api.Ready
+	ready.LastTransitionTime = v1.Now()
+	ready.ObservedGeneration = addon.Status.ObservedGeneration
+	err := make([]string, 0)
+	for i := range addon.Status.Conditions {
+		cnd := &addon.Status.Conditions[i]
+		if cnd.Type == api.ValidationError {
+			err = append(err, cnd.Message)
 		}
-		addon.Spec.Image = nil
-		migrated = true
 	}
-	if addon.Spec.Resources != nil {
-		if len(addon.Spec.Container.Resources.Limits) == 0 {
-			addon.Spec.Container.Resources.Limits = (*addon.Spec.Resources).Limits
-		}
-		if len(addon.Spec.Container.Resources.Requests) == 0 {
-			addon.Spec.Container.Resources.Requests = (*addon.Spec.Resources).Requests
-		}
-		addon.Spec.Resources = nil
-		migrated = true
-	}
-	if addon.Spec.ImagePullPolicy != nil {
-		if addon.Spec.Container.ImagePullPolicy == "" {
-			addon.Spec.Container.ImagePullPolicy = *addon.Spec.ImagePullPolicy
-		}
-		addon.Spec.ImagePullPolicy = nil
-		migrated = true
+	if len(err) == 0 {
+		ready.Status = v1.ConditionTrue
+		ready.Reason = api.Validated
+		ready.Message = strings.Join(err, ";")
+	} else {
+		ready.Status = v1.ConditionFalse
+		ready.Reason = api.ValidationError
 	}
+	return
+}
+
+// addonChanged an addon has been created/updated.
+func (r *Reconciler) addonChanged(addon *api.Addon) (migrated bool, err error) {
+	migrated = addon.Migrate()
 	if migrated {
 		err = r.Update(context.TODO(), addon)
 		if err != nil {
 			return
 		}
 	}
+	if addon.Spec.Container.Image == "" {
+		cnd := api.ImageNotDefined
+		cnd.LastTransitionTime = v1.Now()
+		cnd.ObservedGeneration = addon.Status.ObservedGeneration
+		addon.Status.Conditions = append(
+			addon.Status.Conditions,
+			cnd)
+	}
+	return
+}
+
+// addonDeleted an addon has been deleted.
+func (r *Reconciler) addonDeleted(name string) (err error) {
 	return
 }