/
filters.go
57 lines (48 loc) · 1.65 KB
/
filters.go
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// Copyright © 2016 Asteris, LLC
//
// 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 human
import (
"strings"
"github.com/asteris-llc/converge/graph"
)
// FilterFunc is used to filter out nodes which shouldn't be printed. The func
// should return `true` if the node is to be printed.
type FilterFunc func(id string, value Printable) bool
// ShowOnlyChanged filters nodes to show only changed nodes
func ShowOnlyChanged(id string, value Printable) bool {
return value.HasChanges()
}
// ShowEverything shows all nodes
func ShowEverything(string, Printable) bool {
return true
}
// HideByKind hides certain ID types in the graph. So for example if you want
// to hide all params, specify `param` as a type to this func. This uses the ID
// functions in the graph module.
func HideByKind(types ...string) FilterFunc {
return func(id string, value Printable) bool {
for _, t := range types {
if strings.HasPrefix(graph.BaseID(id), t) {
return false
}
}
return true
}
}
// AndFilter chains FilterFuncs together
func AndFilter(a, b FilterFunc) FilterFunc {
return func(id string, value Printable) bool {
return a(id, value) && b(id, value)
}
}