mirrored from https://chromium.googlesource.com/infra/luci/luci-go
/
purges.go
65 lines (54 loc) · 2.05 KB
/
purges.go
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// Copyright 2021 The LUCI Authors.
//
// 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 prjpb
import (
"go.chromium.org/luci/cv/internal/prjmanager/copyonwrite"
)
// COWPurgingCLs copy-on-write modifies PurgingCLs.
func (p *PState) COWPurgingCLs(m func(*PurgingCL) *PurgingCL, toAdd []*PurgingCL) ([]*PurgingCL, bool) {
in := cowPurgingCLs(p.GetPurgingCls())
out, updated := copyonwrite.Update(in, purgingCLModifier(m), cowPurgingCLs(toAdd))
return []*PurgingCL(out.(cowPurgingCLs)), updated
}
func purgingCLModifier(f func(*PurgingCL) *PurgingCL) copyonwrite.Modifier {
if f == nil {
return nil
}
return func(v interface{}) interface{} {
if v := f(v.(*PurgingCL)); v != nil {
return v
}
return copyonwrite.Deletion
}
}
type cowPurgingCLs []*PurgingCL
// It's important that PurgingCLs are always sorted.
var _ copyonwrite.SortedSlice = cowPurgingCLs(nil)
func (c cowPurgingCLs) At(index int) interface{} {
return c[index]
}
func (c cowPurgingCLs) Append(v interface{}) copyonwrite.Slice {
return append(c, v.(*PurgingCL))
}
func (c cowPurgingCLs) CloneShallow(length int, capacity int) copyonwrite.Slice {
r := make(cowPurgingCLs, length, capacity)
copy(r, c[:length])
return r
}
func (c cowPurgingCLs) LessElements(a interface{}, b interface{}) bool {
return a.(*PurgingCL).GetClid() < b.(*PurgingCL).GetClid()
}
func (c cowPurgingCLs) Len() int { return len(c) }
func (c cowPurgingCLs) Less(i int, j int) bool { return c[i].GetClid() < c[j].GetClid() }
func (c cowPurgingCLs) Swap(i int, j int) { c[i], c[j] = c[j], c[i] }