forked from vmware/vic
/
filter.go
77 lines (65 loc) · 2.06 KB
/
filter.go
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// Copyright 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 filter
import (
"github.com/docker/docker/api/types/filters"
)
// FilterAction represents possible results during filtering
type FilterAction int
const (
IncludeAction FilterAction = iota
ExcludeAction
StopAction
)
// FilterContext will hold the common filter requirements
type FilterContext struct {
// ID of object to filter
ID string
// Name of object to filter
Name string
// BeforeID is the filter to ignore objects that appear before the one given
BeforeID *string
// SinceID is the filter to stop iterating
SinceID *string
// Labels of object to filter
Labels map[string]string
}
// filterCommon will filter the common criteria across objects
func filterCommon(filterContext *FilterContext, cmdFilters filters.Args) FilterAction {
// have we made it to the beforeID
if filterContext.BeforeID != nil {
if filterContext.ID == *filterContext.BeforeID {
filterContext.BeforeID = nil
}
return ExcludeAction
}
// Stop iteration when the object arrives to the filter object
if filterContext.SinceID != nil {
if filterContext.ID == *filterContext.SinceID {
return StopAction
}
}
// Do not include object if any of the labels don't match
if !cmdFilters.MatchKVList("label", filterContext.Labels) {
return ExcludeAction
}
// Do not include if the id doesn't match
if !cmdFilters.Match("id", filterContext.ID) {
return ExcludeAction
}
if !cmdFilters.Match("name", filterContext.Name) {
return ExcludeAction
}
return IncludeAction
}