128 lines
4.2 KiB
Go
128 lines
4.2 KiB
Go
/*
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Copyright 2015 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 container
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import (
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"errors"
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"fmt"
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utilerrors "k8s.io/apimachinery/pkg/util/errors"
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)
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// TODO(random-liu): We need to better organize runtime errors for introspection.
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// Container Terminated and Kubelet is backing off the restart
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var ErrCrashLoopBackOff = errors.New("CrashLoopBackOff")
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var (
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// ErrContainerNotFound returned when a container in the given pod with the
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// given container name was not found, amongst those managed by the kubelet.
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ErrContainerNotFound = errors.New("no matching container")
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)
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var (
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ErrRunContainer = errors.New("RunContainerError")
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ErrKillContainer = errors.New("KillContainerError")
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ErrVerifyNonRoot = errors.New("VerifyNonRootError")
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ErrRunInitContainer = errors.New("RunInitContainerError")
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ErrCreatePodSandbox = errors.New("CreatePodSandboxError")
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ErrConfigPodSandbox = errors.New("ConfigPodSandboxError")
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ErrKillPodSandbox = errors.New("KillPodSandboxError")
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)
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var (
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ErrSetupNetwork = errors.New("SetupNetworkError")
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ErrTeardownNetwork = errors.New("TeardownNetworkError")
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)
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// SyncAction indicates different kind of actions in SyncPod() and KillPod(). Now there are only actions
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// about start/kill container and setup/teardown network.
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type SyncAction string
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const (
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StartContainer SyncAction = "StartContainer"
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KillContainer SyncAction = "KillContainer"
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SetupNetwork SyncAction = "SetupNetwork"
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TeardownNetwork SyncAction = "TeardownNetwork"
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InitContainer SyncAction = "InitContainer"
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CreatePodSandbox SyncAction = "CreatePodSandbox"
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ConfigPodSandbox SyncAction = "ConfigPodSandbox"
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KillPodSandbox SyncAction = "KillPodSandbox"
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)
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// SyncResult is the result of sync action.
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type SyncResult struct {
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// The associated action of the result
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Action SyncAction
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// The target of the action, now the target can only be:
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// * Container: Target should be container name
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// * Network: Target is useless now, we just set it as pod full name now
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Target interface{}
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// Brief error reason
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Error error
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// Human readable error reason
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Message string
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}
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// NewSyncResult generates new SyncResult with specific Action and Target
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func NewSyncResult(action SyncAction, target interface{}) *SyncResult {
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return &SyncResult{Action: action, Target: target}
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}
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// Fail fails the SyncResult with specific error and message
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func (r *SyncResult) Fail(err error, msg string) {
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r.Error, r.Message = err, msg
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}
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// PodSyncResult is the summary result of SyncPod() and KillPod()
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type PodSyncResult struct {
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// Result of different sync actions
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SyncResults []*SyncResult
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// Error encountered in SyncPod() and KillPod() that is not already included in SyncResults
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SyncError error
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}
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// AddSyncResult adds multiple SyncResult to current PodSyncResult
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func (p *PodSyncResult) AddSyncResult(result ...*SyncResult) {
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p.SyncResults = append(p.SyncResults, result...)
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}
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// AddPodSyncResult merges a PodSyncResult to current one
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func (p *PodSyncResult) AddPodSyncResult(result PodSyncResult) {
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p.AddSyncResult(result.SyncResults...)
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p.SyncError = result.SyncError
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}
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// Fail fails the PodSyncResult with an error occurred in SyncPod() and KillPod() itself
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func (p *PodSyncResult) Fail(err error) {
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p.SyncError = err
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}
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// Error returns an error summarizing all the errors in PodSyncResult
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func (p *PodSyncResult) Error() error {
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errlist := []error{}
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if p.SyncError != nil {
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errlist = append(errlist, fmt.Errorf("failed to SyncPod: %v\n", p.SyncError))
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}
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for _, result := range p.SyncResults {
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if result.Error != nil {
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errlist = append(errlist, fmt.Errorf("failed to %q for %q with %v: %q\n", result.Action, result.Target,
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result.Error, result.Message))
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}
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}
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return utilerrors.NewAggregate(errlist)
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}
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