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default_filter_chain.go
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/
default_filter_chain.go
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// Copyright (c) 2017 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 (
"github.com/vmware/harbor/src/replication/models"
)
// DefaultFilterChain provides a default implement for interface FilterChain
type DefaultFilterChain struct {
filters []Filter
}
// NewDefaultFilterChain returns an instance of DefaultFilterChain
func NewDefaultFilterChain(filters []Filter) *DefaultFilterChain {
return &DefaultFilterChain{
filters: filters,
}
}
// Build nil implement now
func (d *DefaultFilterChain) Build(filters []Filter) error {
return nil
}
// Filters returns the filter list
func (d *DefaultFilterChain) Filters() []Filter {
return d.filters
}
// DoFilter does the filter works for filterItems
func (d *DefaultFilterChain) DoFilter(filterItems []models.FilterItem) []models.FilterItem {
if len(filterItems) == 0 {
return []models.FilterItem{}
}
for _, filter := range d.filters {
convertor := filter.GetConvertor()
if convertor != nil {
filterItems = convertor.Convert(filterItems)
}
filterItems = filter.DoFilter(filterItems)
}
return filterItems
}