266 lines
8.2 KiB
Go
266 lines
8.2 KiB
Go
/*
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Copyright 2022 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package controllers
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import (
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"context"
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"crypto/x509"
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"fmt"
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"time"
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corev1 "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/types"
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kerrors "k8s.io/apimachinery/pkg/util/errors"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/builder"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/controller"
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"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
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"sigs.k8s.io/controller-runtime/pkg/predicate"
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"sigs.k8s.io/controller-runtime/pkg/ratelimiter"
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"sigs.k8s.io/yaml"
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"github.com/fluxcd/pkg/apis/meta"
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"github.com/fluxcd/pkg/runtime/conditions"
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helper "github.com/fluxcd/pkg/runtime/controller"
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"github.com/fluxcd/pkg/runtime/patch"
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"github.com/fluxcd/pkg/runtime/predicates"
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apiv1 "github.com/fluxcd/notification-controller/api/v1beta2"
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"github.com/fluxcd/notification-controller/internal/notifier"
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)
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// ProviderReconciler reconciles a Provider object
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type ProviderReconciler struct {
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client.Client
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helper.Metrics
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ControllerName string
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}
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type ProviderReconcilerOptions struct {
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MaxConcurrentReconciles int
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RateLimiter ratelimiter.RateLimiter
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}
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func (r *ProviderReconciler) SetupWithManager(mgr ctrl.Manager) error {
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return r.SetupWithManagerAndOptions(mgr, ProviderReconcilerOptions{})
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}
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func (r *ProviderReconciler) SetupWithManagerAndOptions(mgr ctrl.Manager, opts ProviderReconcilerOptions) error {
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return ctrl.NewControllerManagedBy(mgr).
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For(&apiv1.Provider{}, builder.WithPredicates(
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predicate.Or(predicate.GenerationChangedPredicate{}, predicates.ReconcileRequestedPredicate{}),
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)).
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WithOptions(controller.Options{
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MaxConcurrentReconciles: opts.MaxConcurrentReconciles,
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RateLimiter: opts.RateLimiter,
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RecoverPanic: true,
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}).
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Complete(r)
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}
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// +kubebuilder:rbac:groups=notification.toolkit.fluxcd.io,resources=providers,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=notification.toolkit.fluxcd.io,resources=providers/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups="",resources=secrets,verbs=get;list;watch
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func (r *ProviderReconciler) Reconcile(ctx context.Context, req ctrl.Request) (result ctrl.Result, retErr error) {
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reconcileStart := time.Now()
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log := ctrl.LoggerFrom(ctx)
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obj := &apiv1.Provider{}
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if err := r.Get(ctx, req.NamespacedName, obj); err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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// Initialize the runtime patcher with the current version of the object.
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patcher := patch.NewSerialPatcher(obj, r.Client)
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defer func() {
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// Record Prometheus metrics.
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r.Metrics.RecordReadiness(ctx, obj)
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r.Metrics.RecordDuration(ctx, obj, reconcileStart)
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r.Metrics.RecordSuspend(ctx, obj, obj.Spec.Suspend)
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// Patch finalizers, status and conditions.
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retErr = r.patch(ctx, obj, patcher)
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}()
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if !controllerutil.ContainsFinalizer(obj, apiv1.NotificationFinalizer) {
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controllerutil.AddFinalizer(obj, apiv1.NotificationFinalizer)
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result = ctrl.Result{Requeue: true}
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return
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}
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if !obj.ObjectMeta.DeletionTimestamp.IsZero() {
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controllerutil.RemoveFinalizer(obj, apiv1.NotificationFinalizer)
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result = ctrl.Result{}
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return
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}
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// Return early if the object is suspended.
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if obj.Spec.Suspend {
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log.Info("Reconciliation is suspended for this object")
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return ctrl.Result{}, nil
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}
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return r.reconcile(ctx, obj)
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}
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func (r *ProviderReconciler) reconcile(ctx context.Context, obj *apiv1.Provider) (ctrl.Result, error) {
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// Mark the resource as under reconciliation
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conditions.MarkReconciling(obj, meta.ProgressingReason, "Reconciliation in progress")
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// validate provider spec and credentials
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if err := r.validate(ctx, obj); err != nil {
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conditions.MarkFalse(obj, meta.ReadyCondition, apiv1.ValidationFailedReason, err.Error())
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return ctrl.Result{Requeue: true}, err
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}
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conditions.MarkTrue(obj, meta.ReadyCondition, meta.SucceededReason, apiv1.InitializedReason)
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ctrl.LoggerFrom(ctx).Info("Provider initialized")
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return ctrl.Result{}, nil
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}
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func (r *ProviderReconciler) validate(ctx context.Context, provider *apiv1.Provider) error {
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address := provider.Spec.Address
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proxy := provider.Spec.Proxy
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username := provider.Spec.Username
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password := ""
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token := ""
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headers := make(map[string]string)
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if provider.Spec.SecretRef != nil {
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var secret corev1.Secret
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secretName := types.NamespacedName{Namespace: provider.Namespace, Name: provider.Spec.SecretRef.Name}
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if err := r.Get(ctx, secretName, &secret); err != nil {
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return fmt.Errorf("failed to read secret, error: %w", err)
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}
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if a, ok := secret.Data["address"]; ok {
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address = string(a)
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}
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if p, ok := secret.Data["password"]; ok {
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password = string(p)
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}
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if p, ok := secret.Data["proxy"]; ok {
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proxy = string(p)
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}
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if t, ok := secret.Data["token"]; ok {
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token = string(t)
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}
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if u, ok := secret.Data["username"]; ok {
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username = string(u)
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}
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if h, ok := secret.Data["headers"]; ok {
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err := yaml.Unmarshal(h, headers)
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if err != nil {
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return fmt.Errorf("failed to read headers from secret, error: %w", err)
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}
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}
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}
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if address == "" {
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return fmt.Errorf("no address found in 'spec.address' nor in `spec.secretRef`")
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}
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var certPool *x509.CertPool
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if provider.Spec.CertSecretRef != nil {
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var secret corev1.Secret
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secretName := types.NamespacedName{Namespace: provider.Namespace, Name: provider.Spec.CertSecretRef.Name}
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if err := r.Get(ctx, secretName, &secret); err != nil {
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return fmt.Errorf("failed to read secret, error: %w", err)
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}
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caFile, ok := secret.Data["caFile"]
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if !ok {
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return fmt.Errorf("no caFile found in secret %s", provider.Spec.CertSecretRef.Name)
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}
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certPool = x509.NewCertPool()
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ok = certPool.AppendCertsFromPEM(caFile)
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if !ok {
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return fmt.Errorf("could not append to cert pool: invalid CA found in %s", provider.Spec.CertSecretRef.Name)
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}
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}
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factory := notifier.NewFactory(address, proxy, username, provider.Spec.Channel, token, headers, certPool, password)
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if _, err := factory.Notifier(provider.Spec.Type); err != nil {
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return fmt.Errorf("failed to initialize provider, error: %w", err)
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}
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return nil
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}
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// patch updates the object status, conditions and finalizers.
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func (r *ProviderReconciler) patch(ctx context.Context, obj *apiv1.Provider, patcher *patch.SerialPatcher) (retErr error) {
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// Configure the runtime patcher.
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patchOpts := []patch.Option{}
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ownedConditions := []string{
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meta.ReadyCondition,
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meta.ReconcilingCondition,
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meta.StalledCondition,
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}
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patchOpts = append(patchOpts,
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patch.WithOwnedConditions{Conditions: ownedConditions},
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patch.WithForceOverwriteConditions{},
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patch.WithFieldOwner(r.ControllerName),
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)
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// Set the value of the reconciliation request in status.
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if v, ok := meta.ReconcileAnnotationValue(obj.GetAnnotations()); ok {
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obj.Status.LastHandledReconcileAt = v
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}
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// Remove the Reconciling condition and update the observed generation
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// if the reconciliation was successful.
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if conditions.IsTrue(obj, meta.ReadyCondition) {
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conditions.Delete(obj, meta.ReconcilingCondition)
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obj.Status.ObservedGeneration = obj.Generation
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}
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// Set the Reconciling reason to ProgressingWithRetry if the
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// reconciliation has failed.
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if conditions.IsFalse(obj, meta.ReadyCondition) &&
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conditions.Has(obj, meta.ReconcilingCondition) {
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rc := conditions.Get(obj, meta.ReconcilingCondition)
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rc.Reason = apiv1.ProgressingWithRetryReason
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conditions.Set(obj, rc)
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}
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// Patch the object status, conditions and finalizers.
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if err := patcher.Patch(ctx, obj, patchOpts...); err != nil {
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if !obj.GetDeletionTimestamp().IsZero() {
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err = kerrors.FilterOut(err, func(e error) bool { return apierrors.IsNotFound(e) })
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}
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retErr = kerrors.NewAggregate([]error{retErr, err})
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if retErr != nil {
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return retErr
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}
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}
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return nil
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}
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