/
resource-labels.go
94 lines (76 loc) · 2.24 KB
/
resource-labels.go
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/*
Copyright 2018 BlackRock, Inc.
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 policy
import (
"context"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/dynamic"
"github.com/argoproj/argo-events/common"
"github.com/argoproj/argo-events/pkg/apis/sensor/v1alpha1"
)
// ResourceLabels implements trigger policy based on the resource labels
type ResourceLabels struct {
Trigger *v1alpha1.Trigger
Client dynamic.NamespaceableResourceInterface
Obj *unstructured.Unstructured
}
func (rl *ResourceLabels) ApplyPolicy(ctx context.Context) error {
if rl.Trigger.Policy.K8s == nil || rl.Trigger.Policy.K8s.Labels == nil {
return nil
}
// check if success labels match with labels on object
completed := false
b := rl.Trigger.Policy.K8s.Backoff
if b == nil {
b = &common.DefaultBackoff
}
backoff, err := common.Convert2WaitBackoff(b)
if err != nil {
return err
}
err = wait.ExponentialBackoff(*backoff, func() (bool, error) {
obj, err := rl.Client.Namespace(rl.Obj.GetNamespace()).Get(ctx, rl.Obj.GetName(), metav1.GetOptions{})
if err != nil {
return false, err
}
labels := obj.GetLabels()
if labels == nil {
return false, nil
}
completed = true
for key, value := range rl.Trigger.Policy.K8s.Labels {
if v, ok := labels[key]; ok {
if value != v {
completed = false
break
}
continue
}
completed = false
}
if completed {
return true, nil
}
return false, nil
})
return err
}
func NewResourceLabels(trigger *v1alpha1.Trigger, client dynamic.NamespaceableResourceInterface, obj *unstructured.Unstructured) *ResourceLabels {
return &ResourceLabels{
Trigger: trigger,
Client: client,
Obj: obj,
}
}