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/*
* ============LICENSE_START=======================================================
* oom-certservice-k8s-external-provider
* ================================================================================
* Copyright 2019 The cert-manager authors.
* Modifications copyright (C) 2020 Nokia. All rights reserved.
* ================================================================================
* This source code was copied from the following git repository:
* https://github.com/smallstep/step-issuer
* The source code was modified for usage in the ONAP project.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package certservice_controller
import (
"context"
"fmt"
"onap.org/oom-certservice/k8s-external-provider/src/api"
provisioners "onap.org/oom-certservice/k8s-external-provider/src/certservice-provisioner"
"github.com/go-logr/logr"
apiutil "github.com/jetstack/cert-manager/pkg/api/util"
cmapi "github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha2"
cmmeta "github.com/jetstack/cert-manager/pkg/apis/meta/v1"
core "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/record"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// CertificateRequestReconciler reconciles a CertServiceIssuer object.
type CertificateRequestReconciler struct {
client.Client
Log logr.Logger
Recorder record.EventRecorder
}
// Reconcile will read and validate a CertServiceIssuer resource associated to the
// CertificateRequest resource, and it will sign the CertificateRequest with the
// provisioner in the CertServiceIssuer.
func (r *CertificateRequestReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
ctx := context.Background()
log := r.Log.WithValues("certificaterequest", req.NamespacedName)
// Fetch the CertificateRequest resource being reconciled.
// Just ignore the request if the certificate request has been deleted.
cr := new(cmapi.CertificateRequest)
if err := r.Client.Get(ctx, req.NamespacedName, cr); err != nil {
if apierrors.IsNotFound(err) {
return ctrl.Result{}, nil
}
log.Error(err, "failed to retrieve CertificateRequest resource")
return ctrl.Result{}, err
}
// Check the CertificateRequest's issuerRef and if it does not match the api
// group name, log a message at a debug level and stop processing.
if cr.Spec.IssuerRef.Group != "" && cr.Spec.IssuerRef.Group != api.GroupVersion.Group {
log.V(4).Info("resource does not specify an issuerRef group name that we are responsible for", "group", cr.Spec.IssuerRef.Group)
return ctrl.Result{}, nil
}
// If the certificate data is already set then we skip this request as it
// has already been completed in the past.
if len(cr.Status.Certificate) > 0 {
log.V(4).Info("existing certificate data found in status, skipping already completed CertificateRequest")
return ctrl.Result{}, nil
}
// Fetch the CertServiceIssuer resource
iss := api.CertServiceIssuer{}
issNamespaceName := types.NamespacedName{
Namespace: req.Namespace,
Name: cr.Spec.IssuerRef.Name,
}
if err := r.Client.Get(ctx, issNamespaceName, &iss); err != nil {
log.Error(err, "failed to retrieve CertServiceIssuer resource", "namespace", req.Namespace, "name", cr.Spec.IssuerRef.Name)
_ = r.setStatus(ctx, cr, cmmeta.ConditionFalse, cmapi.CertificateRequestReasonPending, "Failed to retrieve CertServiceIssuer resource %s: %v", issNamespaceName, err)
return ctrl.Result{}, err
}
// Check if the CertServiceIssuer resource has been marked Ready
if !certServiceIssuerHasCondition(iss, api.CertServiceIssuerCondition{Type: api.ConditionReady, Status: api.ConditionTrue}) {
err := fmt.Errorf("resource %s is not ready", issNamespaceName)
log.Error(err, "failed to retrieve CertServiceIssuer resource", "namespace", req.Namespace, "name", cr.Spec.IssuerRef.Name)
_ = r.setStatus(ctx, cr, cmmeta.ConditionFalse, cmapi.CertificateRequestReasonPending, "CertServiceIssuer resource %s is not Ready", issNamespaceName)
return ctrl.Result{}, err
}
// Load the provisioner that will sign the CertificateRequest
provisioner, ok := provisioners.Load(issNamespaceName)
if !ok {
err := fmt.Errorf("provisioner %s not found", issNamespaceName)
log.Error(err, "failed to provisioner for CertServiceIssuer resource")
_ = r.setStatus(ctx, cr, cmmeta.ConditionFalse, cmapi.CertificateRequestReasonPending, "Failed to load provisioner for CertServiceIssuer resource %s", issNamespaceName)
return ctrl.Result{}, err
}
// Sign CertificateRequest
signedPEM, trustedCAs, err := provisioner.Sign(ctx, cr)
if err != nil {
log.Error(err, "failed to sign certificate request")
return ctrl.Result{}, r.setStatus(ctx, cr, cmmeta.ConditionFalse, cmapi.CertificateRequestReasonFailed, "Failed to sign certificate request: %v", err)
}
cr.Status.Certificate = signedPEM
cr.Status.CA = trustedCAs
return ctrl.Result{}, r.setStatus(ctx, cr, cmmeta.ConditionTrue, cmapi.CertificateRequestReasonIssued, "Certificate issued")
}
// SetupWithManager initializes the CertificateRequest controller into the
// controller runtime.
func (r *CertificateRequestReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&cmapi.CertificateRequest{}).
Complete(r)
}
// certServiceIssuerHasCondition will return true if the given CertServiceIssuer resource has
// a condition matching the provided CertServiceIssuerCondition. Only the Type and
// Status field will be used in the comparison, meaning that this function will
// return 'true' even if the Reason, Message and LastTransitionTime fields do
// not match.
func certServiceIssuerHasCondition(iss api.CertServiceIssuer, c api.CertServiceIssuerCondition) bool {
existingConditions := iss.Status.Conditions
for _, cond := range existingConditions {
if c.Type == cond.Type && c.Status == cond.Status {
return true
}
}
return false
}
func (r *CertificateRequestReconciler) setStatus(ctx context.Context, cr *cmapi.CertificateRequest, status cmmeta.ConditionStatus, reason, message string, args ...interface{}) error {
completeMessage := fmt.Sprintf(message, args...)
apiutil.SetCertificateRequestCondition(cr, cmapi.CertificateRequestConditionReady, status, reason, completeMessage)
// Fire an Event to additionally inform users of the change
eventType := core.EventTypeNormal
if status == cmmeta.ConditionFalse {
eventType = core.EventTypeWarning
}
r.Recorder.Event(cr, eventType, reason, completeMessage)
return r.Client.Status().Update(ctx, cr)
}
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