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controller.go
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controller.go
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// Code generated by injection-gen. DO NOT EDIT.
package transformation
import (
context "context"
fmt "fmt"
reflect "reflect"
strings "strings"
internalclientsetscheme "github.com/zeiss/typhoon/pkg/client/generated/clientset/internalclientset/scheme"
client "github.com/zeiss/typhoon/pkg/client/generated/injection/client"
transformation "github.com/zeiss/typhoon/pkg/client/generated/injection/informers/flow/v1alpha1/transformation"
zap "go.uber.org/zap"
corev1 "k8s.io/api/core/v1"
labels "k8s.io/apimachinery/pkg/labels"
types "k8s.io/apimachinery/pkg/types"
watch "k8s.io/apimachinery/pkg/watch"
scheme "k8s.io/client-go/kubernetes/scheme"
v1 "k8s.io/client-go/kubernetes/typed/core/v1"
record "k8s.io/client-go/tools/record"
kubeclient "knative.dev/pkg/client/injection/kube/client"
controller "knative.dev/pkg/controller"
logging "knative.dev/pkg/logging"
logkey "knative.dev/pkg/logging/logkey"
reconciler "knative.dev/pkg/reconciler"
)
const (
defaultControllerAgentName = "transformation-controller"
defaultFinalizerName = "transformations.flow.typhoon.zeiss.com"
)
// NewImpl returns a controller.Impl that handles queuing and feeding work from
// the queue through an implementation of controller.Reconciler, delegating to
// the provided Interface and optional Finalizer methods. OptionsFn is used to return
// controller.ControllerOptions to be used by the internal reconciler.
func NewImpl(ctx context.Context, r Interface, optionsFns ...controller.OptionsFn) *controller.Impl {
logger := logging.FromContext(ctx)
// Check the options function input. It should be 0 or 1.
if len(optionsFns) > 1 {
logger.Fatal("Up to one options function is supported, found: ", len(optionsFns))
}
transformationInformer := transformation.Get(ctx)
lister := transformationInformer.Lister()
var promoteFilterFunc func(obj interface{}) bool
var promoteFunc = func(bkt reconciler.Bucket) {}
rec := &reconcilerImpl{
LeaderAwareFuncs: reconciler.LeaderAwareFuncs{
PromoteFunc: func(bkt reconciler.Bucket, enq func(reconciler.Bucket, types.NamespacedName)) error {
// Signal promotion event
promoteFunc(bkt)
all, err := lister.List(labels.Everything())
if err != nil {
return err
}
for _, elt := range all {
if promoteFilterFunc != nil {
if ok := promoteFilterFunc(elt); !ok {
continue
}
}
enq(bkt, types.NamespacedName{
Namespace: elt.GetNamespace(),
Name: elt.GetName(),
})
}
return nil
},
},
Client: client.Get(ctx),
Lister: lister,
reconciler: r,
finalizerName: defaultFinalizerName,
}
ctrType := reflect.TypeOf(r).Elem()
ctrTypeName := fmt.Sprintf("%s.%s", ctrType.PkgPath(), ctrType.Name())
ctrTypeName = strings.ReplaceAll(ctrTypeName, "/", ".")
logger = logger.With(
zap.String(logkey.ControllerType, ctrTypeName),
zap.String(logkey.Kind, "flow.typhoon.zeiss.com.Transformation"),
)
impl := controller.NewContext(ctx, rec, controller.ControllerOptions{WorkQueueName: ctrTypeName, Logger: logger})
agentName := defaultControllerAgentName
// Pass impl to the options. Save any optional results.
for _, fn := range optionsFns {
opts := fn(impl)
if opts.ConfigStore != nil {
rec.configStore = opts.ConfigStore
}
if opts.FinalizerName != "" {
rec.finalizerName = opts.FinalizerName
}
if opts.AgentName != "" {
agentName = opts.AgentName
}
if opts.SkipStatusUpdates {
rec.skipStatusUpdates = true
}
if opts.DemoteFunc != nil {
rec.DemoteFunc = opts.DemoteFunc
}
if opts.PromoteFilterFunc != nil {
promoteFilterFunc = opts.PromoteFilterFunc
}
if opts.PromoteFunc != nil {
promoteFunc = opts.PromoteFunc
}
}
rec.Recorder = createRecorder(ctx, agentName)
return impl
}
func createRecorder(ctx context.Context, agentName string) record.EventRecorder {
logger := logging.FromContext(ctx)
recorder := controller.GetEventRecorder(ctx)
if recorder == nil {
// Create event broadcaster
logger.Debug("Creating event broadcaster")
eventBroadcaster := record.NewBroadcaster()
watches := []watch.Interface{
eventBroadcaster.StartLogging(logger.Named("event-broadcaster").Infof),
eventBroadcaster.StartRecordingToSink(
&v1.EventSinkImpl{Interface: kubeclient.Get(ctx).CoreV1().Events("")}),
}
recorder = eventBroadcaster.NewRecorder(scheme.Scheme, corev1.EventSource{Component: agentName})
go func() {
<-ctx.Done()
for _, w := range watches {
w.Stop()
}
}()
}
return recorder
}
func init() {
internalclientsetscheme.AddToScheme(scheme.Scheme)
}