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label_filter.go
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label_filter.go
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// Copyright (c) 2018 VMware, Inc. All Rights Reserved.
//
// 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 source
import (
"fmt"
"github.com/vmware/harbor/src/common"
"github.com/vmware/harbor/src/common/dao"
"github.com/vmware/harbor/src/common/utils/log"
"github.com/vmware/harbor/src/replication"
"github.com/vmware/harbor/src/replication/models"
)
// LabelFilter filter resources according to label
type LabelFilter struct {
labelID int64
}
// Init ...
func (l *LabelFilter) Init() error {
return nil
}
// GetConvertor ...
func (l *LabelFilter) GetConvertor() Convertor {
return nil
}
// NewLabelFilter returns an instance of LabelFilter
func NewLabelFilter(labelID int64) *LabelFilter {
return &LabelFilter{
labelID: labelID,
}
}
// DoFilter filter the resources according to the label
func (l *LabelFilter) DoFilter(items []models.FilterItem) []models.FilterItem {
candidates := []string{}
for _, item := range items {
candidates = append(candidates, item.Value)
}
log.Debugf("label filter candidates: %v", candidates)
result := []models.FilterItem{}
for _, item := range items {
hasLabel, err := hasLabel(item, l.labelID)
if err != nil {
log.Errorf("failed to check the label of resouce %v: %v, skip it", item, err)
continue
}
if hasLabel {
log.Debugf("has label %d, add %s to the label filter result list", l.labelID, item.Value)
result = append(result, item)
}
}
return result
}
func hasLabel(resource models.FilterItem, labelID int64) (bool, error) {
rType := ""
switch resource.Kind {
case replication.FilterItemKindProject:
rType = common.ResourceTypeProject
case replication.FilterItemKindRepository:
rType = common.ResourceTypeRepository
case replication.FilterItemKindTag:
rType = common.ResourceTypeImage
default:
return false, fmt.Errorf("invalid resource type: %s", resource.Kind)
}
rl, err := dao.GetResourceLabel(rType, resource.Value, labelID)
if err != nil {
return false, err
}
return rl != nil, nil
}