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external.go
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external.go
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/*
Copyright 2018 Pressinfra SRL.
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 syncer
import (
"context"
"fmt"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
logf "sigs.k8s.io/controller-runtime/pkg/log"
)
type externalSyncer struct {
name string
obj interface{}
owner runtime.Object
syncFn func(context.Context, interface{}) (controllerutil.OperationResult, error)
}
func (s *externalSyncer) Object() interface{} {
return s.obj
}
func (s *externalSyncer) ObjectType() string {
return fmt.Sprintf("%T", s.obj)
}
func (s *externalSyncer) ObjectOwner() runtime.Object {
return s.owner
}
func (s *externalSyncer) Sync(ctx context.Context) (SyncResult, error) {
var err error
log := logf.FromContext(ctx, "syncer", s.name)
result := SyncResult{}
result.Operation, err = s.syncFn(ctx, s.obj)
if err != nil {
result.SetEventData(eventWarning, basicEventReason(s.name, err),
fmt.Sprintf("%s failed syncing: %s", s.ObjectType(), err))
log.Error(err, string(result.Operation), "kind", s.ObjectType())
} else {
result.SetEventData(eventNormal, basicEventReason(s.name, err),
fmt.Sprintf("%s successfully %s", s.ObjectType(), result.Operation))
log.V(1).Info(string(result.Operation), "kind", s.ObjectType())
}
return result, err
}
// NewExternalSyncer creates a new syncer which syncs a generic object
// persisting it's state into and external store The name is used for logging
// and event emitting purposes and should be an valid go identifier in upper
// camel case. (eg. GiteaRepo).
func NewExternalSyncer(name string, owner runtime.Object, obj interface{},
syncFn func(context.Context, interface{}) (controllerutil.OperationResult, error)) Interface {
return &externalSyncer{
name: name,
obj: obj,
owner: owner,
syncFn: syncFn,
}
}