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controller.go
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controller.go
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/*
Copyright 2022.
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.
*/
package controllers
import (
"context"
"github.com/kyma-project/docker-registry/components/operator/api/v1alpha1"
"github.com/kyma-project/docker-registry/components/operator/internal/chart"
"github.com/kyma-project/docker-registry/components/operator/internal/predicate"
"github.com/kyma-project/docker-registry/components/operator/internal/state"
"github.com/kyma-project/docker-registry/components/operator/internal/tracing"
"github.com/pkg/errors"
"go.uber.org/zap"
corev1 "k8s.io/api/core/v1"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/record"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// dockerRegistryReconciler reconciles a DockerRegistry object
type dockerRegistryReconciler struct {
initStateMachine func(*zap.SugaredLogger) state.StateReconciler
client client.Client
log *zap.SugaredLogger
}
func NewDockerRegistryReconciler(client client.Client, config *rest.Config, recorder record.EventRecorder, log *zap.SugaredLogger, chartPath string) *dockerRegistryReconciler {
cache := chart.NewSecretManifestCache(client)
return &dockerRegistryReconciler{
initStateMachine: func(log *zap.SugaredLogger) state.StateReconciler {
return state.NewMachine(client, config, recorder, log, cache, chartPath)
},
client: client,
log: log,
}
}
// SetupWithManager sets up the controller with the Manager.
func (sr *dockerRegistryReconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&v1alpha1.DockerRegistry{}, builder.WithPredicates(predicate.NoStatusChangePredicate{})).
Watches(&corev1.Service{}, tracing.ServiceCollectorWatcher()).
Complete(sr)
}
func (sr *dockerRegistryReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
log := sr.log.With("request", req)
log.Info("reconciliation started")
instance, err := state.GetDockerRegistryOrServed(ctx, req, sr.client)
if err != nil {
log.Warnf("while getting dockerregistry, got error: %s", err.Error())
return ctrl.Result{}, errors.Wrap(err, "while fetching dockerregistry instance")
}
if instance == nil {
log.Info("Couldn't find proper instance of dockerregistry")
return ctrl.Result{}, nil
}
r := sr.initStateMachine(log)
return r.Reconcile(ctx, *instance)
}