github.com/zhyoulun/cilium@v1.6.12/pkg/kvstore/backwards_compat.go (about) 1 // Copyright 2016-2018 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 kvstore 16 17 import ( 18 "github.com/cilium/cilium/common" 19 ) 20 21 // deleteLegacyPrefixes removes old kvstore prefixes of non-persistent keys 22 // which have been used in the past but have been obsoleted since. We remove 23 // them on agent start to ensure that as users upgrade, we do not leave behind 24 // stale keys 25 // 26 // Rules: 27 // - For non-persistent state, obsoletd prefixes can be deleted as soon as the 28 // prefix has been declared obsolete 29 // 30 // - For persistent configuration stored in the kvstore, a forward upgrade 31 // path must be created which automatically removes the old keys on successful 32 // translation. 33 // 34 func deleteLegacyPrefixes() { 35 // Delete all keys in old services prefix 36 Client().DeletePrefix(common.ServicePathV1) 37 }