From 1f0cf7a0dfd0616a7055a68a76f0339f2659fd06 Mon Sep 17 00:00:00 2001 From: Khaled Emara Date: Wed, 15 Jan 2025 18:11:44 +0200 Subject: [PATCH 1/2] feat(certmanager): use controller-runtime style controller Signed-off-by: Khaled Emara --- certmanager/controller.go | 212 ++++++++++++++++---------------------- certmanager/go.mod | 65 +++++++----- certmanager/go.sum | 163 +++++++++++++++++++---------- certmanager/run.go | 99 ------------------ certmanager/utils.go | 134 ------------------------ 5 files changed, 234 insertions(+), 439 deletions(-) delete mode 100644 certmanager/run.go delete mode 100644 certmanager/utils.go diff --git a/certmanager/controller.go b/certmanager/controller.go index 559e314..68a3a85 100644 --- a/certmanager/controller.go +++ b/certmanager/controller.go @@ -2,165 +2,125 @@ package certmanager import ( "context" - "crypto/tls" - "errors" + "fmt" "time" "github.com/go-logr/logr" - tlsMgr "github.com/kyverno/pkg/tls" + "github.com/kyverno/pkg/tls" corev1 "k8s.io/api/core/v1" - metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" - "k8s.io/apimachinery/pkg/labels" - corev1informers "k8s.io/client-go/informers/core/v1" - corev1listers "k8s.io/client-go/listers/core/v1" - "k8s.io/client-go/util/workqueue" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/client-go/tools/record" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/log" + "sigs.k8s.io/controller-runtime/pkg/predicate" ) const ( - // Workers is the number of workers for this controller - Workers = 1 ControllerName = "certmanager-controller" maxRetries = 10 ) -type CertManagerController interface { - // Run starts the controller - Run(context.Context, int) - - // GetCertificate can be used to fetch secrets in tls.Config - GetCertificate(*tls.ClientHelloInfo) (*tls.Certificate, error) +type CertController struct { + client.Client + Scheme *runtime.Scheme + record.EventRecorder + Renewer tls.CertRenewer + caSecretName string + tlsSecretName string + namespace string } -type controller struct { - logger logr.Logger +func NewController( + client client.Client, + scheme *runtime.Scheme, + recorder record.EventRecorder, + certRenewer tls.CertRenewer, + caSecretName string, + tlsSecretName string, + namespace string, +) *CertController { + return &CertController{ + Client: client, + Scheme: scheme, + EventRecorder: recorder, + Renewer: certRenewer, + caSecretName: caSecretName, + tlsSecretName: tlsSecretName, + namespace: namespace, + } +} - renewer tlsMgr.CertRenewer +//+kubebuilder:rbac:groups=core,resources=secrets,verbs=get;list;watch +//+kubebuilder:rbac:groups=core,resources=secrets,verbs=create;update +//+kubebuilder:rbac:groups=core,resources=events,verbs=create;patch - // listers - caLister corev1listers.SecretLister - tlsLister corev1listers.SecretLister +func (r *CertController) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { + logger := log.FromContext(ctx) - // queue - queue workqueue.RateLimitingInterface - caEnqueue EnqueueFunc - tlsEnqueue EnqueueFunc + if req.Namespace != r.namespace { + return ctrl.Result{}, nil + } - tlsConfig *tlsMgr.Config -} + if req.Name != r.caSecretName && req.Name != r.tlsSecretName { + return ctrl.Result{}, nil + } -func NewController( - logger logr.Logger, - caInformer corev1informers.SecretInformer, - tlsInformer corev1informers.SecretInformer, - certRenewer tlsMgr.CertRenewer, - config *tlsMgr.Config, -) CertManagerController { - queue := workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), ControllerName) - c := controller{ - logger: logger, - renewer: certRenewer, - caLister: caInformer.Lister(), - tlsLister: tlsInformer.Lister(), - queue: queue, - caEnqueue: AddDefaultEventHandlers(logger, caInformer.Informer(), queue), - tlsEnqueue: AddDefaultEventHandlers(logger, tlsInformer.Informer(), queue), - tlsConfig: config, + logger.V(4).Info("reconciling certificate") + if err := r.renewCertificates(ctx); err != nil { + logger.Error(err, "failed to renew certificates") + return ctrl.Result{}, err } - return &c + + return ctrl.Result{ + RequeueAfter: tls.CertRenewalInterval, + }, nil } -func (c *controller) Run(ctx context.Context, workers int) { - // we need to enqueue our secrets in case they don't exist yet in the cluster - // this way we ensure the reconcile happens (hence renewal/creation) - if err := c.tlsEnqueue(&corev1.Secret{ - ObjectMeta: metav1.ObjectMeta{ - Namespace: c.tlsConfig.Namespace, - Name: tlsMgr.GenerateTLSPairSecretName(c.tlsConfig), - }, - }); err != nil { - c.logger.V(2).Error(err, "failed to enqueue secret", "name", tlsMgr.GenerateTLSPairSecretName(c.tlsConfig)) +func (r *CertController) renewCertificates(ctx context.Context) error { + logger := log.FromContext(ctx) + if err := RetryFunc(ctx, time.Second, 5*time.Second, logger, "failed to renew CA", r.Renewer.RenewCA)(); err != nil { + return err } - if err := c.caEnqueue(&corev1.Secret{ - ObjectMeta: metav1.ObjectMeta{ - Namespace: c.tlsConfig.Namespace, - Name: tlsMgr.GenerateRootCASecretName(c.tlsConfig), - }, - }); err != nil { - c.logger.V(2).Error(err, "failed to enqueue CA secret", "name", tlsMgr.GenerateRootCASecretName(c.tlsConfig)) + if err := RetryFunc(ctx, time.Second, 5*time.Second, logger, "failed to renew TLS", r.Renewer.RenewTLS)(); err != nil { + return err } - run(ctx, c.logger, ControllerName, time.Second, c.queue, workers, maxRetries, c.reconcile, c.ticker) + return nil } -func (c *controller) GetCertificate(*tls.ClientHelloInfo) (*tls.Certificate, error) { - secret, err := c.tlsLister.Secrets(c.tlsConfig.Namespace).Get(tlsMgr.GenerateTLSPairSecretName(c.tlsConfig)) - if err != nil { - return nil, err - } else if secret == nil { - return nil, errors.New("tls secret not found") - } else if secret.Type != corev1.SecretTypeTLS { - return nil, errors.New("secret is not a TLS secret") - } +func (r *CertController) SetupWithManager(mgr ctrl.Manager) error { + secretPredicate := predicate.NewPredicateFuncs(func(obj client.Object) bool { + return obj.GetNamespace() == r.namespace && (obj.GetName() == r.caSecretName || obj.GetName() == r.tlsSecretName) + }) - cert, err := tls.X509KeyPair(secret.Data[corev1.TLSCertKey], secret.Data[corev1.TLSPrivateKeyKey]) - if err != nil { - return nil, err + if err := ctrl.NewControllerManagedBy(mgr). + For(&corev1.Secret{}). + WithEventFilter(secretPredicate). + Complete(r); err != nil { + return fmt.Errorf("failed to build controller: %w", err) } - return &cert, nil -} - -func (c *controller) reconcile(ctx context.Context, logger logr.Logger, key, namespace, name string) error { - if namespace != c.tlsConfig.Namespace { - return nil - } - if name != tlsMgr.GenerateTLSPairSecretName(c.tlsConfig) && name != tlsMgr.GenerateRootCASecretName(c.tlsConfig) { - return nil - } - return c.renewCertificates(ctx) + return nil } -func (c *controller) ticker(ctx context.Context, logger logr.Logger) { - certsRenewalTicker := time.NewTicker(tlsMgr.CertRenewalInterval) - defer certsRenewalTicker.Stop() - for { - select { - case <-certsRenewalTicker.C: - { - list, err := c.caLister.List(labels.Everything()) - if err == nil { - for _, secret := range list { - if err := c.caEnqueue(secret); err != nil { - logger.V(2).Error(err, "failed to enqueue secret", "name", secret.Name) - } - } - } else { - logger.V(2).Error(err, "falied to list secrets") - } - } - { - list, err := c.tlsLister.List(labels.Everything()) - if err == nil { - for _, secret := range list { - if err := c.tlsEnqueue(secret); err != nil { - logger.V(2).Error(err, "failed to enqueue secret", "name", secret.Name) - } - } +func RetryFunc(ctx context.Context, retryInterval, timeout time.Duration, logger logr.Logger, msg string, run func(context.Context) error) func() error { + return func() error { + ctx, cancel := context.WithTimeout(ctx, timeout) + defer cancel() + registerTicker := time.NewTicker(retryInterval) + defer registerTicker.Stop() + var err error + for { + select { + case <-registerTicker.C: + if err = run(ctx); err != nil { + logger.V(3).Info(msg, "reason", err.Error()) } else { - logger.V(2).Error(err, "falied to list secrets") + return nil } + case <-ctx.Done(): + return fmt.Errorf("retry times out: %w", err) } - case <-ctx.Done(): - return } } } - -func (c *controller) renewCertificates(ctx context.Context) error { - if err := retryFunc(ctx, time.Second, 5*time.Second, c.logger, "failed to renew CA", c.renewer.RenewCA)(); err != nil { - return err - } - if err := retryFunc(ctx, time.Second, 5*time.Second, c.logger, "failed to renew TLS", c.renewer.RenewTLS)(); err != nil { - return err - } - return nil -} diff --git a/certmanager/go.mod b/certmanager/go.mod index 2dd0b8f..639e1de 100644 --- a/certmanager/go.mod +++ b/certmanager/go.mod @@ -1,50 +1,69 @@ module github.com/kyverno/pkg/certmanager -go 1.20 +go 1.22.0 + +toolchain go1.23.2 replace github.com/kyverno/pkg/tls => ../tls require ( - github.com/go-logr/logr v1.2.4 + github.com/go-logr/logr v1.4.2 github.com/kyverno/pkg/tls v0.0.9 - k8s.io/api v0.28.0 - k8s.io/apimachinery v0.28.0 - k8s.io/client-go v0.28.0 + k8s.io/api v0.31.0 + k8s.io/apimachinery v0.31.0 + k8s.io/client-go v0.31.0 + sigs.k8s.io/controller-runtime v0.19.4 ) require ( - github.com/davecgh/go-spew v1.1.1 // indirect - github.com/emicklei/go-restful/v3 v3.10.2 // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/emicklei/go-restful/v3 v3.11.0 // indirect + github.com/evanphx/json-patch/v5 v5.9.0 // indirect + github.com/fsnotify/fsnotify v1.7.0 // indirect + github.com/fxamacker/cbor/v2 v2.7.0 // indirect github.com/go-openapi/jsonpointer v0.19.6 // indirect github.com/go-openapi/jsonreference v0.20.2 // indirect - github.com/go-openapi/swag v0.22.3 // indirect + github.com/go-openapi/swag v0.22.4 // indirect github.com/gogo/protobuf v1.3.2 // indirect - github.com/golang/protobuf v1.5.3 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.4 // indirect github.com/google/gnostic-models v0.6.8 // indirect - github.com/google/go-cmp v0.5.9 // indirect + github.com/google/go-cmp v0.6.0 // indirect github.com/google/gofuzz v1.2.0 // indirect - github.com/google/uuid v1.3.0 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/imdario/mergo v0.3.6 // indirect github.com/josharian/intern v1.0.0 // indirect github.com/json-iterator/go v1.1.12 // indirect github.com/mailru/easyjson v0.7.7 // indirect github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect github.com/modern-go/reflect2 v1.0.2 // indirect github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect - golang.org/x/net v0.13.0 // indirect - golang.org/x/oauth2 v0.8.0 // indirect - golang.org/x/sys v0.10.0 // indirect - golang.org/x/term v0.10.0 // indirect - golang.org/x/text v0.11.0 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/client_golang v1.19.1 // indirect + github.com/prometheus/client_model v0.6.1 // indirect + github.com/prometheus/common v0.55.0 // indirect + github.com/prometheus/procfs v0.15.1 // indirect + github.com/spf13/pflag v1.0.5 // indirect + github.com/x448/float16 v0.8.4 // indirect + golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc // indirect + golang.org/x/net v0.26.0 // indirect + golang.org/x/oauth2 v0.21.0 // indirect + golang.org/x/sys v0.21.0 // indirect + golang.org/x/term v0.21.0 // indirect + golang.org/x/text v0.16.0 // indirect golang.org/x/time v0.3.0 // indirect - google.golang.org/appengine v1.6.7 // indirect - google.golang.org/protobuf v1.30.0 // indirect + gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect + google.golang.org/protobuf v1.34.2 // indirect gopkg.in/inf.v0 v0.9.1 // indirect gopkg.in/yaml.v2 v2.4.0 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect - k8s.io/klog/v2 v2.100.1 // indirect - k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 // indirect - k8s.io/utils v0.0.0-20230406110748-d93618cff8a2 // indirect + k8s.io/apiextensions-apiserver v0.31.0 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340 // indirect + k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect - sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect - sigs.k8s.io/yaml v1.3.0 // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect + sigs.k8s.io/yaml v1.4.0 // indirect ) diff --git a/certmanager/go.sum b/certmanager/go.sum index 4cf9cc6..012da1b 100644 --- a/certmanager/go.sum +++ b/certmanager/go.sum @@ -1,36 +1,55 @@ +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= +github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs= +github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/emicklei/go-restful/v3 v3.10.2 h1:hIovbnmBTLjHXkqEBUz3HGpXZdM7ZrE9fJIZIqlJLqE= -github.com/emicklei/go-restful/v3 v3.10.2/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc= -github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= -github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ= -github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= +github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM= +github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g= +github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc= +github.com/evanphx/json-patch v0.5.2 h1:xVCHIVMUu1wtM/VkR9jVZ45N3FhZfYMMYGorLCR8P3k= +github.com/evanphx/json-patch v0.5.2/go.mod h1:ZWS5hhDbVDyob71nXKNL0+PWn6ToqBHMikGIFbs31qQ= +github.com/evanphx/json-patch/v5 v5.9.0 h1:kcBlZQbplgElYIlo/n1hJbls2z/1awpXxpRi0/FOJfg= +github.com/evanphx/json-patch/v5 v5.9.0/go.mod h1:VNkHZ/282BpEyt/tObQO8s5CMPmYYq14uClGH4abBuQ= +github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA= +github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM= +github.com/fxamacker/cbor/v2 v2.7.0 h1:iM5WgngdRBanHcxugY4JySA0nk1wZorNOpTgCMedv5E= +github.com/fxamacker/cbor/v2 v2.7.0/go.mod h1:pxXPTn3joSm21Gbwsv0w9OSA2y1HFR9qXEeXQVeNoDQ= +github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY= +github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-logr/zapr v1.3.0 h1:XGdV8XW8zdwFiwOA2Dryh1gj2KRQyOOoNmBy4EplIcQ= +github.com/go-logr/zapr v1.3.0/go.mod h1:YKepepNBd1u/oyhd/yQmtjVXmm9uML4IXUgMOwR8/Gg= github.com/go-openapi/jsonpointer v0.19.6 h1:eCs3fxoIi3Wh6vtgmLTOjdhSpiqphQ+DaPn38N2ZdrE= github.com/go-openapi/jsonpointer v0.19.6/go.mod h1:osyAmYz/mB/C3I+WsTTSgw1ONzaLJoLCyoi6/zppojs= github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE= github.com/go-openapi/jsonreference v0.20.2/go.mod h1:Bl1zwGIM8/wsvqjsOQLJ/SH+En5Ap4rVB5KVcIDZG2k= -github.com/go-openapi/swag v0.22.3 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v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E= +sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY= diff --git a/certmanager/run.go b/certmanager/run.go deleted file mode 100644 index 02f47b6..0000000 --- a/certmanager/run.go +++ /dev/null @@ -1,99 +0,0 @@ -package certmanager - -import ( - "context" - "sync" - "time" - - "github.com/go-logr/logr" - "k8s.io/apimachinery/pkg/api/errors" - "k8s.io/apimachinery/pkg/util/runtime" - "k8s.io/apimachinery/pkg/util/wait" - "k8s.io/client-go/tools/cache" - "k8s.io/client-go/util/workqueue" -) - -type reconcileFunc func(ctx context.Context, logger logr.Logger, key string, namespace string, name string) error - -func run(ctx context.Context, logger logr.Logger, controllerName string, period time.Duration, queue workqueue.RateLimitingInterface, n, maxRetries int, r reconcileFunc, routines ...func(context.Context, logr.Logger)) { - logger.V(2).Info("starting ...") - defer logger.V(2).Info("stopped") - var wg sync.WaitGroup - defer wg.Wait() - defer runtime.HandleCrash() - func() { - ctx, cancel := context.WithCancel(ctx) - defer cancel() - defer queue.ShutDown() - for i := 0; i < n; i++ { - wg.Add(1) - go func(logger logr.Logger) { - logger.V(2).Info("starting worker") - defer logger.V(2).Info("worker stopped") - defer wg.Done() - wait.UntilWithContext(ctx, func(ctx context.Context) { worker(ctx, logger, queue, maxRetries, r) }, period) - }(logger.V(2).WithName("worker").WithValues("id", i)) - } - for i, routine := range routines { - wg.Add(1) - go func(logger logr.Logger, routine func(context.Context, logr.Logger)) { - logger.V(2).Info("starting routine") - defer logger.V(2).Info("routine stopped") - defer wg.Done() - routine(ctx, logger) - }(logger.V(2).WithName("routine").WithValues("id", i), routine) - } - <-ctx.Done() - }() - logger.V(2).Info("waiting for workers to terminate ...") -} - -func worker(ctx context.Context, logger logr.Logger, queue workqueue.RateLimitingInterface, maxRetries int, r reconcileFunc) { - for processNextWorkItem(ctx, logger, queue, maxRetries, r) { - } -} - -func processNextWorkItem(ctx context.Context, logger logr.Logger, queue workqueue.RateLimitingInterface, maxRetries int, r reconcileFunc) bool { - if obj, quit := queue.Get(); !quit { - defer queue.Done(obj) - handleErr(ctx, logger, queue, maxRetries, reconcile(ctx, logger, obj, r), obj) - return true - } - return false -} - -func handleErr(ctx context.Context, logger logr.Logger, queue workqueue.RateLimitingInterface, maxRetries int, err error, obj interface{}) { - if err == nil { - queue.Forget(obj) - } else if errors.IsNotFound(err) { - logger.V(2).Info("Dropping request from the queue", "obj", obj, "error", err.Error()) - queue.Forget(obj) - } else if queue.NumRequeues(obj) < maxRetries { - logger.V(2).Info("Retrying request", "obj", obj, "error", err.Error()) - queue.AddRateLimited(obj) - } else { - logger.V(2).Error(err, "Failed to process request", "obj", obj) - queue.Forget(obj) - } -} - -func reconcile(ctx context.Context, logger logr.Logger, obj interface{}, r reconcileFunc) error { - start := time.Now() - var k, ns, n string - if key, ok := obj.(cache.ExplicitKey); ok { - k = string(key) - } else { - k = obj.(string) - if namespace, name, err := cache.SplitMetaNamespaceKey(k); err != nil { - return err - } else { - ns, n = namespace, name - } - } - logger = logger.V(2).WithValues("key", k, "namespace", ns, "name", n) - logger.V(2).Info("reconciling ...") - defer func(start time.Time) { - logger.V(2).Info("done", "duration", time.Since(start).String()) - }(start) - return r(ctx, logger, k, ns, n) -} diff --git a/certmanager/utils.go b/certmanager/utils.go deleted file mode 100644 index b9c135f..0000000 --- a/certmanager/utils.go +++ /dev/null @@ -1,134 +0,0 @@ -package certmanager - -import ( - "context" - "fmt" - "time" - - "github.com/go-logr/logr" - metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" - "k8s.io/client-go/tools/cache" - "k8s.io/client-go/util/workqueue" -) - -type ( - addFunc = addFuncT[interface{}] - updateFunc = updateFuncT[interface{}] - deleteFunc = deleteFuncT[interface{}] - addFuncT[T any] func(T) - updateFuncT[T any] func(T, T) - deleteFuncT[T any] func(T) - keyFunc = keyFuncT[interface{}, interface{}] - keyFuncT[T, U any] func(T) (U, error) - EnqueueFunc = EnqueueFuncT[interface{}] - EnqueueFuncT[T any] func(T) error -) - -func retryFunc(ctx context.Context, retryInterval, timeout time.Duration, logger logr.Logger, msg string, run func(context.Context) error) func() error { - return func() error { - ctx, cancel := context.WithTimeout(ctx, timeout) - defer cancel() - registerTicker := time.NewTicker(retryInterval) - defer registerTicker.Stop() - var err error - for { - select { - case <-registerTicker.C: - if err = run(ctx); err != nil { - logger.V(2).Info(msg, "reason", err.Error()) - } else { - return nil - } - case <-ctx.Done(): - return fmt.Errorf("retry times out: %w", err) - } - } - } -} - -func AddEventHandlers(informer cache.SharedInformer, a addFunc, u updateFunc, d deleteFunc) { - _, _ = informer.AddEventHandler(cache.ResourceEventHandlerFuncs{ - AddFunc: a, - UpdateFunc: u, - DeleteFunc: func(obj interface{}) { - d(GetObjectWithTombstone(obj)) - }, - }) -} - -func AddDefaultEventHandlers(logger logr.Logger, informer cache.SharedInformer, queue workqueue.RateLimitingInterface) EnqueueFunc { - return AddKeyedEventHandlers(logger, informer, queue, MetaNamespaceKey) -} - -func AddKeyedEventHandlers(logger logr.Logger, informer cache.SharedInformer, queue workqueue.RateLimitingInterface, parseKey keyFunc) EnqueueFunc { - enqueueFunc := LogError(logger, Parse(parseKey, Queue(queue))) - AddEventHandlers(informer, AddFunc(logger, enqueueFunc), UpdateFunc(logger, enqueueFunc), DeleteFunc(logger, enqueueFunc)) - return enqueueFunc -} - -func LogError[K any](logger logr.Logger, inner EnqueueFuncT[K]) EnqueueFuncT[K] { - return func(obj K) error { - err := inner(obj) - if err != nil { - logger.V(2).Error(err, "failed to compute key name", "obj", obj) - } - return err - } -} - -func Queue(queue workqueue.RateLimitingInterface) EnqueueFunc { - return func(obj interface{}) error { - queue.Add(obj) - return nil - } -} - -func MetaNamespaceKey(obj interface{}) (interface{}, error) { - return cache.MetaNamespaceKeyFunc(obj) -} - -func AddFunc(logger logr.Logger, enqueue EnqueueFunc) addFunc { - return func(obj interface{}) { - if err := enqueue(obj); err != nil { - logger.V(2).Error(err, "failed to enqueue object", "obj", obj) - } - } -} - -func UpdateFunc(logger logr.Logger, enqueue EnqueueFunc) updateFunc { - return func(old, obj interface{}) { - oldMeta := old.(metav1.Object) - objMeta := obj.(metav1.Object) - if oldMeta.GetResourceVersion() != objMeta.GetResourceVersion() { - if err := enqueue(obj); err != nil { - logger.V(2).Error(err, "failed to enqueue object", "obj", obj) - } - } - } -} - -func DeleteFunc(logger logr.Logger, enqueue EnqueueFunc) deleteFunc { - return func(obj interface{}) { - if err := enqueue(obj); err != nil { - logger.V(2).Error(err, "failed to enqueue object", "obj", obj) - } - } -} - -func GetObjectWithTombstone(obj interface{}) interface{} { - tombstone, ok := obj.(cache.DeletedFinalStateUnknown) - if ok { - return tombstone.Obj - } - return obj -} - -func Parse[K, L any](parseKey keyFuncT[K, L], inner EnqueueFuncT[L]) EnqueueFuncT[K] { - return func(obj K) error { - if key, err := parseKey(obj); err != nil { - return err - } else { - return inner(key) - } - } -} From 46c93e5c6c4dceb6678d6b42e31b1cbbb3e2dff7 Mon Sep 17 00:00:00 2001 From: Khaled Emara Date: Fri, 17 Jan 2025 17:15:36 +0200 Subject: [PATCH 2/2] feat(certmanager): add metrics for the reconciler Signed-off-by: Khaled Emara --- certmanager/controller.go | 29 +++++++++++++++++++++++++---- 1 file changed, 25 insertions(+), 4 deletions(-) diff --git a/certmanager/controller.go b/certmanager/controller.go index 68a3a85..a13139a 100644 --- a/certmanager/controller.go +++ b/certmanager/controller.go @@ -7,12 +7,14 @@ import ( "github.com/go-logr/logr" "github.com/kyverno/pkg/tls" + "github.com/prometheus/client_golang/prometheus" corev1 "k8s.io/api/core/v1" "k8s.io/apimachinery/pkg/runtime" "k8s.io/client-go/tools/record" ctrl "sigs.k8s.io/controller-runtime" "sigs.k8s.io/controller-runtime/pkg/client" "sigs.k8s.io/controller-runtime/pkg/log" + "sigs.k8s.io/controller-runtime/pkg/metrics" "sigs.k8s.io/controller-runtime/pkg/predicate" ) @@ -21,6 +23,21 @@ const ( maxRetries = 10 ) +var ( + reconcileCount = prometheus.NewCounter(prometheus.CounterOpts{ + Name: "certmanager_controller_reconcile_total", + Help: "Total number of reconciliations.", + }) + requeueCount = prometheus.NewCounter(prometheus.CounterOpts{ + Name: "certmanager_controller_requeue_total", + Help: "Total number of requeues.", + }) + droppedCount = prometheus.NewCounter(prometheus.CounterOpts{ + Name: "certmanager_controller_dropped_total", + Help: "Total number of objects dropped from the queue.", + }) +) + type CertController struct { client.Client Scheme *runtime.Scheme @@ -51,18 +68,17 @@ func NewController( } } -//+kubebuilder:rbac:groups=core,resources=secrets,verbs=get;list;watch -//+kubebuilder:rbac:groups=core,resources=secrets,verbs=create;update -//+kubebuilder:rbac:groups=core,resources=events,verbs=create;patch - func (r *CertController) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { logger := log.FromContext(ctx) + reconcileCount.Inc() if req.Namespace != r.namespace { + droppedCount.Inc() return ctrl.Result{}, nil } if req.Name != r.caSecretName && req.Name != r.tlsSecretName { + droppedCount.Inc() return ctrl.Result{}, nil } @@ -72,6 +88,7 @@ func (r *CertController) Reconcile(ctx context.Context, req ctrl.Request) (ctrl. return ctrl.Result{}, err } + requeueCount.Inc() return ctrl.Result{ RequeueAfter: tls.CertRenewalInterval, }, nil @@ -124,3 +141,7 @@ func RetryFunc(ctx context.Context, retryInterval, timeout time.Duration, logger } } } + +func init() { + metrics.Registry.MustRegister(reconcileCount, requeueCount, droppedCount) +}