mirror of https://github.com/k3s-io/k3s
72 lines
2.5 KiB
Go
72 lines
2.5 KiB
Go
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package etcd3
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import (
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"k8s.io/apimachinery/pkg/api/errors"
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etcdrpc "github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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)
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func interpretWatchError(err error) error {
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switch {
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case err == etcdrpc.ErrCompacted:
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return errors.NewResourceExpired("The resourceVersion for the provided watch is too old.")
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}
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return err
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}
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const (
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expired string = "The resourceVersion for the provided list is too old."
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continueExpired string = "The provided continue parameter is too old " +
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"to display a consistent list result. You can start a new list without " +
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"the continue parameter."
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inconsistentContinue string = "The provided continue parameter is too old " +
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"to display a consistent list result. You can start a new list without " +
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"the continue parameter, or use the continue token in this response to " +
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"retrieve the remainder of the results. Continuing with the provided " +
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"token results in an inconsistent list - objects that were created, " +
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"modified, or deleted between the time the first chunk was returned " +
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"and now may show up in the list."
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)
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func interpretListError(err error, paging bool, continueKey, keyPrefix string) error {
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switch {
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case err == etcdrpc.ErrCompacted:
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if paging {
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return handleCompactedErrorForPaging(continueKey, keyPrefix)
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}
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return errors.NewResourceExpired(expired)
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}
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return err
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}
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func handleCompactedErrorForPaging(continueKey, keyPrefix string) error {
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// continueToken.ResoureVersion=-1 means that the apiserver can
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// continue the list at the latest resource version. We don't use rv=0
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// for this purpose to distinguish from a bad token that has empty rv.
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newToken, err := encodeContinue(continueKey, keyPrefix, -1)
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if err != nil {
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utilruntime.HandleError(err)
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return errors.NewResourceExpired(continueExpired)
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}
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statusError := errors.NewResourceExpired(inconsistentContinue)
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statusError.ErrStatus.ListMeta.Continue = newToken
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return statusError
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}
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