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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package periodic | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
|
|
||
| insightsInformers "github.com/openshift/client-go/insights/informers/externalversions" | ||
| "github.com/openshift/library-go/pkg/controller/factory" | ||
| "github.com/openshift/library-go/pkg/operator/events" | ||
| "k8s.io/apimachinery/pkg/api/meta" | ||
| "k8s.io/client-go/tools/cache" | ||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
||
| const ( | ||
| periodicGatheringPrefix = "periodic-gathering-" | ||
| ) | ||
|
|
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| // DataGatherInformer is an interface providing information | ||
| // about newly create DataGather resources | ||
| type DataGatherInformer interface { | ||
| factory.Controller | ||
| DataGatherCreated() <-chan string | ||
| } | ||
|
|
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| // dataGatherController is type implementing DataGatherInformer | ||
| type dataGatherController struct { | ||
| factory.Controller | ||
| ch chan string | ||
| } | ||
|
|
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| // NewDataGatherInformer creates a new instance of the DataGatherInformer interface | ||
| func NewDataGatherInformer(eventRecorder events.Recorder, insightsInf insightsInformers.SharedInformerFactory) (DataGatherInformer, error) { | ||
| inf := insightsInf.Insights().V1alpha1().DataGathers().Informer() | ||
|
|
||
| dgCtrl := &dataGatherController{ | ||
| ch: make(chan string), | ||
| } | ||
| _, err := inf.AddEventHandler(dgCtrl.eventHandler()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| ctrl := factory.New().WithInformers(inf). | ||
| WithSync(dgCtrl.sync). | ||
| ToController("DataGatherInformer", eventRecorder) | ||
|
|
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| dgCtrl.Controller = ctrl | ||
| return dgCtrl, nil | ||
| } | ||
|
|
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| func (d *dataGatherController) sync(_ context.Context, _ factory.SyncContext) error { | ||
| return nil | ||
| } | ||
|
|
||
| // eventHandler returns a new ResourceEventHandler that handles the DataGather resources | ||
| // addition events. Resources with the prefix "periodic-gathering-" are filtered out to avoid conflicts | ||
| // with periodic data gathering. | ||
| func (d *dataGatherController) eventHandler() cache.ResourceEventHandler { | ||
| return cache.ResourceEventHandlerFuncs{ | ||
| AddFunc: func(obj interface{}) { | ||
| dgMetadata, err := meta.Accessor(obj) | ||
| if err != nil { | ||
| klog.Errorf("Can't read metadata of newly added DataGather resource: %v", err) | ||
| return | ||
| } | ||
| // filter out dataGathers created for periodic gathering | ||
| if strings.HasPrefix(dgMetadata.GetName(), periodicGatheringPrefix) { | ||
| return | ||
| } | ||
| d.ch <- dgMetadata.GetName() | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // DataGatherCreated returns a channel providing the name of | ||
| // newly created DataGather resource | ||
| func (d *dataGatherController) DataGatherCreated() <-chan string { | ||
| return d.ch | ||
| } |
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