136 lines
4.5 KiB
Go
136 lines
4.5 KiB
Go
/*
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Copyright 2019 The Jetstack cert-manager contributors.
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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 ca
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import (
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"context"
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"fmt"
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corev1 "k8s.io/api/core/v1"
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k8sErrors "k8s.io/apimachinery/pkg/api/errors"
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corelisters "k8s.io/client-go/listers/core/v1"
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"k8s.io/client-go/tools/record"
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apiutil "github.com/jetstack/cert-manager/pkg/api/util"
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"github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha1"
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controllerpkg "github.com/jetstack/cert-manager/pkg/controller"
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"github.com/jetstack/cert-manager/pkg/controller/certificaterequests"
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"github.com/jetstack/cert-manager/pkg/issuer"
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logf "github.com/jetstack/cert-manager/pkg/logs"
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"github.com/jetstack/cert-manager/pkg/util"
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"github.com/jetstack/cert-manager/pkg/util/kube"
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"github.com/jetstack/cert-manager/pkg/util/pki"
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)
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const (
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CRControllerName = "certificaterequests-issuer-ca"
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)
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type CA struct {
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// used to record Events about resources to the API
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recorder record.EventRecorder
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issuerOptions controllerpkg.IssuerOptions
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secretsLister corelisters.SecretLister
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helper issuer.Helper
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}
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func init() {
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// create certificate request controller for ca issuer
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controllerpkg.Register(CRControllerName, func(ctx *controllerpkg.Context) (controllerpkg.Interface, error) {
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ca := NewCA(ctx)
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controller := certificaterequests.New(apiutil.IssuerCA, ca)
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c, err := controllerpkg.New(ctx, CRControllerName, controller)
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if err != nil {
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return nil, err
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}
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return c.Run, nil
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})
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}
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func NewCA(ctx *controllerpkg.Context) *CA {
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return &CA{
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recorder: ctx.Recorder,
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issuerOptions: ctx.IssuerOptions,
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secretsLister: ctx.KubeSharedInformerFactory.Core().V1().Secrets().Lister(),
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helper: issuer.NewHelper(
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ctx.SharedInformerFactory.Certmanager().V1alpha1().Issuers().Lister(),
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ctx.SharedInformerFactory.Certmanager().V1alpha1().ClusterIssuers().Lister(),
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),
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}
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}
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func (c *CA) Sign(ctx context.Context, cr *v1alpha1.CertificateRequest) (*issuer.IssueResponse, error) {
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log := logf.FromContext(ctx, "sign")
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issuer, err := c.helper.GetGenericIssuer(cr.Spec.IssuerRef, cr.Namespace)
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if k8sErrors.IsNotFound(err) {
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apiutil.SetCertificateRequestCondition(cr, v1alpha1.CertificateRequestConditionReady,
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v1alpha1.ConditionFalse, v1alpha1.CertificateRequestReasonPending,
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fmt.Sprintf("Referenced %s not found", util.IssuerKind(cr.Spec.IssuerRef)))
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c.recorder.Event(cr, corev1.EventTypeWarning, v1alpha1.CertificateRequestReasonPending, err.Error())
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log.WithValues(
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logf.RelatedResourceNameKey, cr.Spec.IssuerRef.Name,
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logf.RelatedResourceKindKey, cr.Spec.IssuerRef.Kind,
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).Error(err, "failed to find referenced issuer")
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}
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if err != nil {
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return nil, err
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}
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resourceNamespace := c.issuerOptions.ResourceNamespace(issuer)
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// get a copy of the CA certificate named on the Issuer
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caCerts, caKey, err := kube.SecretTLSKeyPair(ctx, c.secretsLister, resourceNamespace, issuer.GetSpec().CA.SecretName)
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if k8sErrors.IsNotFound(err) {
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log := logf.WithRelatedResourceName(log, issuer.GetSpec().CA.SecretName, resourceNamespace, "Secret")
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log.Info("error getting signing CA for Issuer")
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c.recorder.Event(cr, corev1.EventTypeWarning, v1alpha1.CertificateRequestReasonPending, err.Error())
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}
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if err != nil {
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return nil, err
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}
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template, err := pki.GenerateTemplateFromCertificateRequest(cr)
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if err != nil {
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apiutil.SetCertificateRequestCondition(cr, v1alpha1.CertificateRequestConditionReady,
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v1alpha1.ConditionFalse, v1alpha1.CertificateRequestReasonPending,
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fmt.Sprintf("Referenced %s not found", util.IssuerKind(cr.Spec.IssuerRef)))
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log.Error(err, "error generating certificate template")
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c.recorder.Eventf(cr, corev1.EventTypeWarning, "ErrorSigning", "Error generating certificate template: %v", err)
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return nil, err
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}
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resp, err := pki.SignCSRTemplate(caCerts, caKey, template)
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if err != nil {
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log.Error(err, "error signing certificate")
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c.recorder.Eventf(cr, corev1.EventTypeWarning, "ErrorSigning", "Error signing certificate: %v", err)
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return nil, err
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}
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log.Info("certificate issued")
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return resp, nil
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}
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