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Signed-off-by: Paweł Szulik <pawel.szulik@intel.com>
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Paweł Szulik
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Jan 31, 2022
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| // Copyright 2021 Google Inc. All Rights Reserved. | ||
| // | ||
| // 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 pages | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
| "net/url" | ||
| "path" | ||
| "time" | ||
|
|
||
| "github.com/google/cadvisor/container/podman" | ||
| info "github.com/google/cadvisor/info/v1" | ||
| "github.com/google/cadvisor/manager" | ||
|
|
||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
||
| const PodmanPage = "/podman/" | ||
|
|
||
| func servePodmanPage(m manager.Manager, w http.ResponseWriter, u *url.URL) { | ||
| start := time.Now() | ||
|
|
||
| containerName := u.Path[len(PodmanPage)-1:] | ||
| rootDir := getRootDir(containerName) | ||
|
|
||
| var data *pageData | ||
|
|
||
| if containerName == "/" { | ||
| // Scenario for all containers. | ||
| reqParams := info.ContainerInfoRequest{ | ||
| NumStats: 0, | ||
| } | ||
| conts, err := m.AllPodmanContainers(&reqParams) | ||
| if err != nil { | ||
| http.Error(w, fmt.Sprintf("failed to get container %q with error: %v", containerName, err), http.StatusNotFound) | ||
| return | ||
| } | ||
| subcontainers := make([]link, 0, len(conts)) | ||
| for _, cont := range conts { | ||
| subcontainers = append(subcontainers, link{ | ||
| Text: getContainerDisplayName(cont.ContainerReference), | ||
| Link: path.Join(rootDir, PodmanPage, podman.ContainerNameToPodmanID(cont.ContainerReference.Name)), | ||
| }) | ||
| } | ||
|
|
||
| // Get Podman status | ||
| status, err := podman.Status() | ||
| if err != nil { | ||
| http.Error(w, fmt.Sprintf("failed to get docker info: %v", err), http.StatusInternalServerError) | ||
| return | ||
| } | ||
|
|
||
| podmanStatus, driverStatus := toStatusKV(status) | ||
| // Get Podman Images | ||
| images, err := podman.Images() | ||
| if err != nil { | ||
| http.Error(w, fmt.Sprintf("failed to get podman images: %v", err), http.StatusInternalServerError) | ||
| return | ||
| } | ||
|
|
||
| podmanContainerText := "Podman Containers" | ||
| data = &pageData{ | ||
| DisplayName: podmanContainerText, | ||
| ParentContainers: []link{ | ||
| { | ||
| Text: podmanContainerText, | ||
| Link: path.Join(rootDir, PodmanPage), | ||
| }}, | ||
| Subcontainers: subcontainers, | ||
| Root: rootDir, | ||
| DockerStatus: podmanStatus, | ||
| DockerDriverStatus: driverStatus, | ||
| DockerImages: images, | ||
| } | ||
| } else { | ||
| // Scenario for specific container. | ||
| reqParams := info.ContainerInfoRequest{ | ||
| NumStats: 60, | ||
| } | ||
| cont, err := m.PodmanContainer(containerName[1:], &reqParams) | ||
| if err != nil { | ||
| http.Error(w, fmt.Sprintf("failed to get container %v with error: %v", containerName, err), http.StatusNotFound) | ||
| return | ||
| } | ||
| displayName := getContainerDisplayName(cont.ContainerReference) | ||
|
|
||
| var parentContainers []link | ||
| parentContainers = append(parentContainers, link{ | ||
| Text: "Podman Containers", | ||
| Link: path.Join(rootDir, PodmanPage), | ||
| }) | ||
| parentContainers = append(parentContainers, link{ | ||
| Text: displayName, | ||
| Link: path.Join(rootDir, PodmanPage, podman.ContainerNameToPodmanID(cont.Name)), | ||
| }) | ||
|
|
||
| machineInfo, err := m.GetMachineInfo() | ||
| if err != nil { | ||
| http.Error(w, fmt.Sprintf("failed to get machine info: %v", err), http.StatusInternalServerError) | ||
| return | ||
| } | ||
| data = &pageData{ | ||
| DisplayName: displayName, | ||
| ContainerName: escapeContainerName(cont.Name), | ||
| ParentContainers: parentContainers, | ||
| Spec: cont.Spec, | ||
| Stats: cont.Stats, | ||
| MachineInfo: machineInfo, | ||
| ResourcesAvailable: cont.Spec.HasCpu || cont.Spec.HasMemory || cont.Spec.HasNetwork, | ||
| CpuAvailable: cont.Spec.HasCpu, | ||
| MemoryAvailable: cont.Spec.HasMemory, | ||
| NetworkAvailable: cont.Spec.HasNetwork, | ||
| FsAvailable: cont.Spec.HasFilesystem, | ||
| CustomMetricsAvailable: cont.Spec.HasCustomMetrics, | ||
| Root: rootDir, | ||
| } | ||
| } | ||
|
|
||
| err := pageTemplate.Execute(w, data) | ||
| if err != nil { | ||
| klog.Errorf("Failed to apply template: %s", err) | ||
| } | ||
|
|
||
| klog.V(5).Infof("Request took %s", time.Since(start)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // Copyright 2021 Google Inc. All Rights Reserved. | ||
| // | ||
| // 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 podman | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "github.com/containers/podman/v3/pkg/bindings" | ||
| ) | ||
|
|
||
| func Client() (context.Context, error) { | ||
| return bindings.NewConnection(context.Background(), *endpointFlag) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| // Copyright 2021 Google Inc. All Rights Reserved. | ||
| // | ||
| // 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 podman | ||
|
|
||
| import ( | ||
| "flag" | ||
| "path" | ||
| "regexp" | ||
| "strings" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/google/cadvisor/container" | ||
| "github.com/google/cadvisor/container/docker" | ||
| "github.com/google/cadvisor/devicemapper" | ||
| "github.com/google/cadvisor/fs" | ||
| info "github.com/google/cadvisor/info/v1" | ||
| "github.com/google/cadvisor/zfs" | ||
| ) | ||
|
|
||
| const ( | ||
| rootDirRetries = 5 | ||
| rootDirRetryPeriod = time.Second | ||
| ) | ||
|
|
||
| var ( | ||
| rootDirFlag = flag.String("podman_root", "/var/lib/containers", "podman diretory") | ||
| endpointFlag = flag.String("podman", "unix:///var/run/podman/podman.sock", "podman endpoint") | ||
| ) | ||
|
|
||
| var ( | ||
| cgroupRegexp = regexp.MustCompile(`([a-z0-9]{64})`) | ||
| podmanRootDir string | ||
| podmanRootDirOnce sync.Once | ||
| ) | ||
|
|
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| func RootDir() string { | ||
| podmanRootDirOnce.Do(func() { | ||
| for i := 0; i < rootDirRetries; i++ { | ||
| status, err := Status() | ||
| if err != nil && status.RootDir != "" { | ||
| podmanRootDir = status.RootDir | ||
| break | ||
| } else { | ||
| time.Sleep(rootDirRetryPeriod) | ||
| } | ||
| } | ||
| if podmanRootDir == "" { | ||
| podmanRootDir = *rootDirFlag | ||
| } | ||
| }) | ||
| return podmanRootDir | ||
| } | ||
|
|
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| type podmanFactory struct { | ||
| // Information about the mounted cgroup subsystems. | ||
| machineInfoFactory info.MachineInfoFactory | ||
|
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| storageDriver docker.StorageDriver | ||
| storageDir string | ||
|
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| cgroupSubsystem map[string]string | ||
|
|
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| fsInfo fs.FsInfo | ||
|
|
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| version []int | ||
|
|
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| metrics container.MetricSet | ||
|
|
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| thinPoolName string | ||
| thinPoolWatcher *devicemapper.ThinPoolWatcher | ||
|
|
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| zfsWatcher *zfs.ZfsWatcher | ||
| } | ||
|
|
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| func isContainerName(name string) bool { | ||
| if strings.HasSuffix(name, ".mount") { | ||
| return false | ||
| } | ||
|
|
||
| return cgroupRegexp.MatchString(path.Base(name)) | ||
| } | ||
|
|
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| func (f *podmanFactory) CanHandleAndAccept(name string) (handle bool, accept bool, err error) { | ||
| if !isContainerName(name) { | ||
| return false, false, nil | ||
| } | ||
|
|
||
| return true, true, nil | ||
| } | ||
|
|
||
| func (f *podmanFactory) DebugInfo() map[string][]string { | ||
| return map[string][]string{} | ||
| } | ||
|
|
||
| func (f *podmanFactory) String() string { | ||
| return "podman" | ||
| } | ||
|
|
||
| func (f *podmanFactory) NewContainerHandler(name string, metadataEnvAllowList []string, inHostNamespace bool) (handler container.ContainerHandler, err error) { | ||
| client, err := Client() | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| // TODO(Creatone): Check metadata env list. | ||
|
|
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| return newPodmanContainerHandler(client, name, f.machineInfoFactory, f.fsInfo, | ||
| f.storageDriver, f.storageDir, f.cgroupSubsystem, inHostNamespace, | ||
| metadataEnvAllowList, f.version, f.metrics, f.thinPoolName, f.thinPoolWatcher, f.zfsWatcher) | ||
| } | ||
|
|
||
| func ContainerNameToPodmanID(name string) string { | ||
| id := path.Base(name) | ||
|
|
||
| if matches := cgroupRegexp.FindStringSubmatch(id); matches != nil { | ||
| return matches[1] | ||
| } | ||
|
|
||
| return id | ||
| } |
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