generated from crossplane/provider-template
/
temporalnamespace.go
260 lines (216 loc) · 9.06 KB
/
temporalnamespace.go
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package temporalnamespace
import (
"context"
"strconv"
"github.com/crossplane/crossplane-runtime/pkg/logging"
"github.com/crossplane/crossplane-runtime/pkg/meta"
"github.com/google/go-cmp/cmp"
"github.com/pkg/errors"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
xpv1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
"github.com/crossplane/crossplane-runtime/pkg/connection"
"github.com/crossplane/crossplane-runtime/pkg/controller"
"github.com/crossplane/crossplane-runtime/pkg/event"
"github.com/crossplane/crossplane-runtime/pkg/ratelimiter"
"github.com/crossplane/crossplane-runtime/pkg/reconciler/managed"
"github.com/crossplane/crossplane-runtime/pkg/resource"
"github.com/denniskniep/provider-temporal/apis/core/v1alpha1"
apisv1alpha1 "github.com/denniskniep/provider-temporal/apis/v1alpha1"
temporal "github.com/denniskniep/provider-temporal/internal/clients"
"github.com/denniskniep/provider-temporal/internal/features"
)
const (
errNotTemporalNamespace = "managed resource is not a TemporalNamespace custom resource"
errTrackPCUsage = "cannot track ProviderConfig usage"
errGetPC = "cannot get ProviderConfig"
errGetCreds = "cannot get credentials"
errNewClient = "cannot create new Service"
errDescribe = "failed to describe Namespace resource"
errCreate = "failed to create Namespace resource"
errUpdate = "failed to update Namespace resource"
errDelete = "failed to delete Namespace resource"
errMapping = "failed to map Namespace resource"
)
// Setup adds a controller that reconciles TemporalNamespace managed resources.
func Setup(mgr ctrl.Manager, o controller.Options) error {
o.Logger.Info("Setup Controller: TemporalNamespace")
name := managed.ControllerName(v1alpha1.TemporalNamespaceGroupKind)
cps := []managed.ConnectionPublisher{managed.NewAPISecretPublisher(mgr.GetClient(), mgr.GetScheme())}
if o.Features.Enabled(features.EnableAlphaExternalSecretStores) {
cps = append(cps, connection.NewDetailsManager(mgr.GetClient(), apisv1alpha1.StoreConfigGroupVersionKind))
}
r := managed.NewReconciler(mgr,
resource.ManagedKind(v1alpha1.TemporalNamespaceGroupVersionKind),
managed.WithExternalConnecter(&connector{
kube: mgr.GetClient(),
usage: resource.NewProviderConfigUsageTracker(mgr.GetClient(), &apisv1alpha1.ProviderConfigUsage{}),
newServiceFn: temporal.NewNamespaceService,
logger: o.Logger.WithValues("controller", name)}),
managed.WithLogger(o.Logger.WithValues("controller", name)),
managed.WithPollInterval(o.PollInterval),
managed.WithRecorder(event.NewAPIRecorder(mgr.GetEventRecorderFor(name))),
managed.WithInitializers(),
managed.WithConnectionPublishers(cps...))
return ctrl.NewControllerManagedBy(mgr).
Named(name).
WithOptions(o.ForControllerRuntime()).
WithEventFilter(resource.DesiredStateChanged()).
For(&v1alpha1.TemporalNamespace{}).
Complete(ratelimiter.NewReconciler(name, r, o.GlobalRateLimiter))
}
// A connector is expected to produce an ExternalClient when its Connect method
// is called.
type connector struct {
kube client.Client
usage resource.Tracker
logger logging.Logger
newServiceFn func(creds []byte) (temporal.NamespaceService, error)
}
// Connect typically produces an ExternalClient by:
// 1. Tracking that the managed resource is using a ProviderConfig.
// 2. Getting the managed resource's ProviderConfig.
// 3. Getting the credentials specified by the ProviderConfig.
// 4. Using the credentials to form a client.
func (c *connector) Connect(ctx context.Context, mg resource.Managed) (managed.ExternalClient, error) {
logger := c.logger.WithValues("method", "connect")
logger.Debug("Start Connect")
cr, ok := mg.(*v1alpha1.TemporalNamespace)
if !ok {
return nil, errors.New(errNotTemporalNamespace)
}
if err := c.usage.Track(ctx, mg); err != nil {
return nil, errors.Wrap(err, errTrackPCUsage)
}
pc := &apisv1alpha1.ProviderConfig{}
if err := c.kube.Get(ctx, types.NamespacedName{Name: cr.GetProviderConfigReference().Name}, pc); err != nil {
return nil, errors.Wrap(err, errGetPC)
}
cd := pc.Spec.Credentials
data, err := resource.CommonCredentialExtractor(ctx, cd.Source, c.kube, cd.CommonCredentialSelectors)
if err != nil {
return nil, errors.Wrap(err, errGetCreds)
}
svc, err := c.newServiceFn(data)
if err != nil {
return nil, errors.Wrap(err, errNewClient)
}
logger.Debug("Connected")
return &external{service: svc, logger: c.logger}, nil
}
// An ExternalClient observes, then either creates, updates, or deletes an
// external resource to ensure it reflects the managed resource's desired state.
type external struct {
// A 'client' used to connect to the external resource API. In practice this
// would be something like an AWS SDK client.
service temporal.NamespaceService
logger logging.Logger
}
func (c *external) Observe(ctx context.Context, mg resource.Managed) (managed.ExternalObservation, error) {
logger := c.logger.WithValues("method", "observe")
logger.Debug("Start observe")
cr, ok := mg.(*v1alpha1.TemporalNamespace)
if !ok {
return managed.ExternalObservation{}, errors.New(errNotTemporalNamespace)
}
externalName := meta.GetExternalName(cr)
c.logger.Debug("ExternalName: '" + externalName + "'")
observed, err := c.service.DescribeNamespaceByName(ctx, cr.Spec.ForProvider.Name)
if err != nil {
return managed.ExternalObservation{}, errors.Wrap(err, errDescribe)
}
if observed == nil {
c.logger.Debug("Managed resource '" + cr.Name + "' does not exist")
return managed.ExternalObservation{
ResourceExists: false,
ResourceUpToDate: false,
ConnectionDetails: managed.ConnectionDetails{},
}, nil
}
c.logger.Debug("Found '" + observed.Name + "' with id '" + observed.Id + "'")
// Update Status
cr.Status.AtProvider = *observed
if observed.State == "Registered" {
cr.SetConditions(xpv1.Available().WithMessage("Namespace.State = " + observed.State))
}
if observed.State == "Unspecified" {
cr.SetConditions(xpv1.Unavailable().WithMessage("Namespace.State = " + observed.State))
}
if observed.State == "Deleted" {
cr.SetConditions(xpv1.Deleting().WithMessage("Namespace.State = " + observed.State))
}
observedCompareable, err := c.service.MapToNamespaceCompare(observed)
if err != nil {
return managed.ExternalObservation{}, errors.Wrap(err, errMapping)
}
specCompareable, err := c.service.MapToNamespaceCompare(&cr.Spec.ForProvider)
if err != nil {
return managed.ExternalObservation{}, errors.Wrap(err, errMapping)
}
diff := ""
resourceUpToDate := cmp.Equal(specCompareable, observedCompareable)
// Compare Spec with observed
if !resourceUpToDate {
diff = cmp.Diff(specCompareable, observedCompareable)
}
c.logger.Debug("Managed resource '" + cr.Name + "' upToDate: " + strconv.FormatBool(resourceUpToDate) + "")
return managed.ExternalObservation{
ResourceExists: true,
ResourceUpToDate: resourceUpToDate,
Diff: diff,
ResourceLateInitialized: false,
ConnectionDetails: managed.ConnectionDetails{},
}, nil
}
func (c *external) Create(ctx context.Context, mg resource.Managed) (managed.ExternalCreation, error) {
logger := c.logger.WithValues("method", "create")
logger.Debug("Start create")
cr, ok := mg.(*v1alpha1.TemporalNamespace)
if !ok {
return managed.ExternalCreation{}, errors.New(errNotTemporalNamespace)
}
err := c.service.CreateNamespace(ctx, &cr.Spec.ForProvider)
if err != nil {
return managed.ExternalCreation{}, errors.Wrap(err, errCreate)
}
meta.SetExternalName(cr, cr.Spec.ForProvider.Name)
c.logger.Debug("Managed resource '" + cr.Name + "' created")
return managed.ExternalCreation{
// Optionally return any details that may be required to connect to the
// external resource. These will be stored as the connection secret.
ConnectionDetails: managed.ConnectionDetails{},
}, nil
}
func (c *external) Update(ctx context.Context, mg resource.Managed) (managed.ExternalUpdate, error) {
logger := c.logger.WithValues("method", "update")
logger.Debug("Start update")
cr, ok := mg.(*v1alpha1.TemporalNamespace)
if !ok {
return managed.ExternalUpdate{}, errors.New(errNotTemporalNamespace)
}
err := c.service.UpdateNamespaceByName(ctx, &cr.Spec.ForProvider)
if err != nil {
return managed.ExternalUpdate{}, errors.Wrap(err, errUpdate)
}
c.logger.Debug("Managed resource '" + cr.Name + "' updated")
return managed.ExternalUpdate{
// Optionally return any details that may be required to connect to the
// external resource. These will be stored as the connection secret.
ConnectionDetails: managed.ConnectionDetails{},
}, nil
}
func (c *external) Delete(ctx context.Context, mg resource.Managed) error {
logger := c.logger.WithValues("method", "delete")
logger.Debug("Start delete")
cr, ok := mg.(*v1alpha1.TemporalNamespace)
if !ok {
return errors.New(errNotTemporalNamespace)
}
_, err := c.service.DeleteNamespaceByName(ctx, cr.Spec.ForProvider.Name)
if err != nil {
return errors.Wrap(err, errDelete)
}
c.logger.Debug("Managed resource '" + cr.Name + "' deleted")
return nil
}