github.com/zhyoulun/cilium@v1.6.12/pkg/revert/finalize.go (about) 1 // Copyright 2018 Authors of Cilium 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package revert 16 17 // FinalizeFunc is a function returned by a successful function call, which 18 // finalizes the initial function call. A call that returns an error should 19 // return a nil FinalizeFunc. 20 // When a call returns both a RevertFunc and a FinalizeFunc, at most one may be 21 // called. The side effects of the FinalizeFunc are not reverted by the 22 // RevertFunc. 23 type FinalizeFunc func() 24 25 // FinalizeList is a list of FinalizeFuncs to be executed in the same order 26 // they were appended. 27 type FinalizeList struct { 28 // finalizeFuncs is the list of finalize functions in the order they were 29 // appended. 30 finalizeFuncs []FinalizeFunc 31 } 32 33 // Append appends the given FinalizeFunc at the end of this list. If the 34 // function is nil, it is ignored. 35 func (f *FinalizeList) Append(finalizeFunc FinalizeFunc) { 36 if finalizeFunc != nil { 37 f.finalizeFuncs = append(f.finalizeFuncs, finalizeFunc) 38 } 39 } 40 41 // Finalize executes all the FinalizeFuncs in the given list in the same order 42 // they were pushed. 43 func (f *FinalizeList) Finalize() { 44 for _, f := range f.finalizeFuncs { 45 f() 46 } 47 }