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impl.go
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impl.go
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// Copyright 2021 Chaos Mesh 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 timechaos
import (
"context"
"fmt"
"time"
"github.com/go-logr/logr"
"github.com/pkg/errors"
"go.uber.org/fx"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
impltypes "github.com/chaos-mesh/chaos-mesh/controllers/chaosimpl/types"
"github.com/chaos-mesh/chaos-mesh/controllers/chaosimpl/utils"
"github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon/pb"
timeUtils "github.com/chaos-mesh/chaos-mesh/pkg/time/utils"
)
var _ impltypes.ChaosImpl = (*Impl)(nil)
type Impl struct {
client.Client
Log logr.Logger
decoder *utils.ContainerRecordDecoder
}
func (impl *Impl) Apply(ctx context.Context, index int, records []*v1alpha1.Record, obj v1alpha1.InnerObject) (v1alpha1.Phase, error) {
decodedContainer, err := impl.decoder.DecodeContainerRecord(ctx, records[index], obj)
pbClient := decodedContainer.PbClient
containerId := decodedContainer.ContainerId
if pbClient != nil {
defer pbClient.Close()
}
if err != nil {
return v1alpha1.NotInjected, err
}
timechaos := obj.(*v1alpha1.TimeChaos)
mask, err := timeUtils.EncodeClkIds(timechaos.Spec.ClockIds)
if err != nil {
return v1alpha1.NotInjected, err
}
duration, err := time.ParseDuration(timechaos.Spec.TimeOffset)
if err != nil {
return v1alpha1.NotInjected, err
}
sec, nsec := secAndNSecFromDuration(duration)
impl.Log.Info("setting time shift", "mask", mask, "sec", sec, "nsec", nsec, "containerId", containerId)
_, err = pbClient.SetTimeOffset(ctx, &pb.TimeRequest{
ContainerId: containerId,
Sec: sec,
Nsec: nsec,
ClkIdsMask: mask,
Uid: string(obj.GetUID()) + string(decodedContainer.Pod.GetUID()),
PodContainerName: fmt.Sprintf("%s:%s", decodedContainer.Pod.GetUID(), decodedContainer.ContainerName),
})
if err != nil {
return v1alpha1.NotInjected, err
}
return v1alpha1.Injected, nil
}
func (impl *Impl) Recover(ctx context.Context, index int, records []*v1alpha1.Record, obj v1alpha1.InnerObject) (v1alpha1.Phase, error) {
decodedContainer, err := impl.decoder.DecodeContainerRecord(ctx, records[index], obj)
pbClient := decodedContainer.PbClient
containerId := decodedContainer.ContainerId
if pbClient != nil {
defer pbClient.Close()
}
if err != nil {
if errors.Is(err, utils.ErrContainerNotFound) {
// pretend the disappeared container has been recovered
return v1alpha1.NotInjected, nil
}
return v1alpha1.Injected, err
}
impl.Log.Info("recover for container", "containerId", containerId)
_, err = pbClient.RecoverTimeOffset(ctx, &pb.TimeRequest{
ContainerId: containerId,
Uid: string(obj.GetUID()) + string(decodedContainer.Pod.GetUID()),
PodContainerName: fmt.Sprintf("%s:%s", decodedContainer.Pod.GetUID(), decodedContainer.ContainerName),
})
if err != nil {
return v1alpha1.Injected, err
}
return v1alpha1.NotInjected, nil
}
func secAndNSecFromDuration(duration time.Duration) (sec int64, nsec int64) {
sec = duration.Nanoseconds() / 1e9
nsec = duration.Nanoseconds() - (sec * 1e9)
return
}
func NewImpl(c client.Client, log logr.Logger, decoder *utils.ContainerRecordDecoder) *impltypes.ChaosImplPair {
return &impltypes.ChaosImplPair{
Name: "timechaos",
Object: &v1alpha1.TimeChaos{},
Impl: &Impl{
Client: c,
Log: log.WithName("timechaos"),
decoder: decoder,
},
}
}
var Module = fx.Provide(
fx.Annotated{
Group: "impl",
Target: NewImpl,
},
)