add basics

This commit is contained in:
Ali Orouji 2021-01-03 22:52:13 +03:30
parent 46d50dbbf9
commit f4f6ff4598
5 changed files with 32 additions and 31 deletions

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@ -1,5 +1,5 @@
apiVersion: v1 apiVersion: v1
appVersion: "1.0" appVersion: "0.1.0"
description: A Helm chart for Kubernetes description: Sotoon Cloud DNS Cert-Manager Webhook
name: example-webhook name: cert-manager-webhook-sotoon
version: 0.1.0 version: 0.1.0

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@ -6,14 +6,14 @@
# solve the DNS01 challenge. # solve the DNS01 challenge.
# This group name should be **unique**, hence using your own company's domain # This group name should be **unique**, hence using your own company's domain
# here is recommended. # here is recommended.
groupName: acme.mycompany.com groupName: acme.sotoon.ir
certManager: certManager:
namespace: cert-manager namespace: cert-manager
serviceAccountName: cert-manager serviceAccountName: cert-manager
image: image:
repository: mycompany/webhook-image repository: aliorouji/cert-manager-webhook-sotoon
tag: latest tag: latest
pullPolicy: IfNotPresent pullPolicy: IfNotPresent

1
go.mod
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@ -4,6 +4,7 @@ go 1.13
require ( require (
github.com/jetstack/cert-manager v0.13.1 github.com/jetstack/cert-manager v0.13.1
k8s.io/api v0.17.0
k8s.io/apiextensions-apiserver v0.17.0 k8s.io/apiextensions-apiserver v0.17.0
k8s.io/client-go v0.17.0 k8s.io/client-go v0.17.0
) )

50
main.go
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@ -6,11 +6,13 @@ import (
"os" "os"
extapi "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1" extapi "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
//"k8s.io/client-go/kubernetes" "k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest" "k8s.io/client-go/rest"
"github.com/jetstack/cert-manager/pkg/acme/webhook/apis/acme/v1alpha1" "github.com/jetstack/cert-manager/pkg/acme/webhook/apis/acme/v1alpha1"
"github.com/jetstack/cert-manager/pkg/acme/webhook/cmd" "github.com/jetstack/cert-manager/pkg/acme/webhook/cmd"
corev1 "k8s.io/api/core/v1"
) )
var GroupName = os.Getenv("GROUP_NAME") var GroupName = os.Getenv("GROUP_NAME")
@ -26,25 +28,25 @@ func main() {
// webhook, where the Name() method will be used to disambiguate between // webhook, where the Name() method will be used to disambiguate between
// the different implementations. // the different implementations.
cmd.RunWebhookServer(GroupName, cmd.RunWebhookServer(GroupName,
&customDNSProviderSolver{}, &sotoonDNSProviderSolver{},
) )
} }
// customDNSProviderSolver implements the provider-specific logic needed to // sotoonDNSProviderSolver implements the provider-specific logic needed to
// 'present' an ACME challenge TXT record for your own DNS provider. // 'present' an ACME challenge TXT record for your own DNS provider.
// To do so, it must implement the `github.com/jetstack/cert-manager/pkg/acme/webhook.Solver` // To do so, it must implement the `github.com/jetstack/cert-manager/pkg/acme/webhook.Solver`
// interface. // interface.
type customDNSProviderSolver struct { type sotoonDNSProviderSolver struct {
// If a Kubernetes 'clientset' is needed, you must: // If a Kubernetes 'clientset' is needed, you must:
// 1. uncomment the additional `client` field in this structure below // 1. uncomment the additional `client` field in this structure below
// 2. uncomment the "k8s.io/client-go/kubernetes" import at the top of the file // 2. uncomment the "k8s.io/client-go/kubernetes" import at the top of the file
// 3. uncomment the relevant code in the Initialize method below // 3. uncomment the relevant code in the Initialize method below
// 4. ensure your webhook's service account has the required RBAC role // 4. ensure your webhook's service account has the required RBAC role
// assigned to it for interacting with the Kubernetes APIs you need. // assigned to it for interacting with the Kubernetes APIs you need.
//client kubernetes.Clientset client *kubernetes.Clientset
} }
// customDNSProviderConfig is a structure that is used to decode into when // sotoonDNSProviderConfig is a structure that is used to decode into when
// solving a DNS01 challenge. // solving a DNS01 challenge.
// This information is provided by cert-manager, and may be a reference to // This information is provided by cert-manager, and may be a reference to
// additional configuration that's needed to solve the challenge for this // additional configuration that's needed to solve the challenge for this
@ -58,14 +60,16 @@ type customDNSProviderSolver struct {
// You should not include sensitive information here. If credentials need to // You should not include sensitive information here. If credentials need to
// be used by your provider here, you should reference a Kubernetes Secret // be used by your provider here, you should reference a Kubernetes Secret
// resource and fetch these credentials using a Kubernetes clientset. // resource and fetch these credentials using a Kubernetes clientset.
type customDNSProviderConfig struct { type sotoonDNSProviderConfig struct {
// Change the two fields below according to the format of the configuration // Change the two fields below according to the format of the configuration
// to be decoded. // to be decoded.
// These fields will be set by users in the // These fields will be set by users in the
// `issuer.spec.acme.dns01.providers.webhook.config` field. // `issuer.spec.acme.dns01.providers.webhook.config` field.
//Email string `json:"email"` Email string `json:"email"`
//APIKeySecretRef v1alpha1.SecretKeySelector `json:"apiKeySecretRef"` Endpoint string `json:"endpoint"`
Namespace string `json:"namespace"`
APITokenSecretRef corev1.SecretKeySelector `json:"apiTokenSecretRef"`
} }
// Name is used as the name for this DNS solver when referencing it on the ACME // Name is used as the name for this DNS solver when referencing it on the ACME
@ -74,8 +78,8 @@ type customDNSProviderConfig struct {
// solvers configured with the same Name() **so long as they do not co-exist // solvers configured with the same Name() **so long as they do not co-exist
// within a single webhook deployment**. // within a single webhook deployment**.
// For example, `cloudflare` may be used as the name of a solver. // For example, `cloudflare` may be used as the name of a solver.
func (c *customDNSProviderSolver) Name() string { func (c *sotoonDNSProviderSolver) Name() string {
return "my-custom-solver" return "sotoon"
} }
// Present is responsible for actually presenting the DNS record with the // Present is responsible for actually presenting the DNS record with the
@ -83,7 +87,7 @@ func (c *customDNSProviderSolver) Name() string {
// This method should tolerate being called multiple times with the same value. // This method should tolerate being called multiple times with the same value.
// cert-manager itself will later perform a self check to ensure that the // cert-manager itself will later perform a self check to ensure that the
// solver has correctly configured the DNS provider. // solver has correctly configured the DNS provider.
func (c *customDNSProviderSolver) Present(ch *v1alpha1.ChallengeRequest) error { func (c *sotoonDNSProviderSolver) Present(ch *v1alpha1.ChallengeRequest) error {
cfg, err := loadConfig(ch.Config) cfg, err := loadConfig(ch.Config)
if err != nil { if err != nil {
return err return err
@ -102,7 +106,7 @@ func (c *customDNSProviderSolver) Present(ch *v1alpha1.ChallengeRequest) error {
// value provided on the ChallengeRequest should be cleaned up. // value provided on the ChallengeRequest should be cleaned up.
// This is in order to facilitate multiple DNS validations for the same domain // This is in order to facilitate multiple DNS validations for the same domain
// concurrently. // concurrently.
func (c *customDNSProviderSolver) CleanUp(ch *v1alpha1.ChallengeRequest) error { func (c *sotoonDNSProviderSolver) CleanUp(ch *v1alpha1.ChallengeRequest) error {
// TODO: add code that deletes a record from the DNS provider's console // TODO: add code that deletes a record from the DNS provider's console
return nil return nil
} }
@ -116,25 +120,21 @@ func (c *customDNSProviderSolver) CleanUp(ch *v1alpha1.ChallengeRequest) error {
// provider accounts. // provider accounts.
// The stopCh can be used to handle early termination of the webhook, in cases // The stopCh can be used to handle early termination of the webhook, in cases
// where a SIGTERM or similar signal is sent to the webhook process. // where a SIGTERM or similar signal is sent to the webhook process.
func (c *customDNSProviderSolver) Initialize(kubeClientConfig *rest.Config, stopCh <-chan struct{}) error { func (c *sotoonDNSProviderSolver) Initialize(kubeClientConfig *rest.Config, stopCh <-chan struct{}) error {
///// UNCOMMENT THE BELOW CODE TO MAKE A KUBERNETES CLIENTSET AVAILABLE TO cl, err := kubernetes.NewForConfig(kubeClientConfig)
///// YOUR CUSTOM DNS PROVIDER if err != nil {
return err
}
//cl, err := kubernetes.NewForConfig(kubeClientConfig) c.client = cl
//if err != nil {
// return err
//}
//
//c.client = cl
///// END OF CODE TO MAKE KUBERNETES CLIENTSET AVAILABLE
return nil return nil
} }
// loadConfig is a small helper function that decodes JSON configuration into // loadConfig is a small helper function that decodes JSON configuration into
// the typed config struct. // the typed config struct.
func loadConfig(cfgJSON *extapi.JSON) (customDNSProviderConfig, error) { func loadConfig(cfgJSON *extapi.JSON) (sotoonDNSProviderConfig, error) {
cfg := customDNSProviderConfig{} cfg := sotoonDNSProviderConfig{}
// handle the 'base case' where no configuration has been provided // handle the 'base case' where no configuration has been provided
if cfgJSON == nil { if cfgJSON == nil {
return cfg, nil return cfg, nil

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@ -16,7 +16,7 @@ func TestRunsSuite(t *testing.T) {
// snippet of valid configuration that should be included on the // snippet of valid configuration that should be included on the
// ChallengeRequest passed as part of the test cases. // ChallengeRequest passed as part of the test cases.
fixture := dns.NewFixture(&customDNSProviderSolver{}, fixture := dns.NewFixture(&sotoonDNSProviderSolver{},
dns.SetResolvedZone(zone), dns.SetResolvedZone(zone),
dns.SetAllowAmbientCredentials(false), dns.SetAllowAmbientCredentials(false),
dns.SetManifestPath("testdata/my-custom-solver"), dns.SetManifestPath("testdata/my-custom-solver"),