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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| package collect | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| troubleshootv1beta1 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/tools/remotecommand" | ||
| "sigs.k8s.io/controller-runtime/pkg/client/config" | ||
| ) | ||
|
|
||
| type ExecOutput struct { | ||
| Results map[string][]byte `json:"exec/,omitempty"` | ||
| } | ||
|
|
||
| type execResult struct { | ||
| Stdout string `json:"stdout,omitempty"` | ||
| Stderr string `json:"stderr,omitempty"` | ||
| Error error `json:"error,omitempty"` | ||
| } | ||
|
|
||
| func Exec(execCollector *troubleshootv1beta1.Exec, redact bool) error { | ||
| if execCollector.Timeout == "" { | ||
| return execWithoutTimeout(execCollector, redact) | ||
| } | ||
|
|
||
| timeout, err := time.ParseDuration(execCollector.Timeout) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| execChan := make(chan error, 1) | ||
| go func() { | ||
| execChan <- execWithoutTimeout(execCollector, redact) | ||
| }() | ||
|
|
||
| select { | ||
| case <-time.After(timeout): | ||
| return errors.New("timeout") | ||
| case err := <-execChan: | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| func execWithoutTimeout(execCollector *troubleshootv1beta1.Exec, redact bool) error { | ||
| cfg, err := config.GetConfig() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| client, err := kubernetes.NewForConfig(cfg) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| pods, err := listPodsInSelectors(client, execCollector.Namespace, execCollector.Selector) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| execOutput := &ExecOutput{ | ||
| Results: make(map[string][]byte), | ||
| } | ||
|
|
||
| for _, pod := range pods { | ||
| output, err := getExecOutputs(client, pod, execCollector, redact) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| b, err := json.MarshalIndent(output, "", " ") | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| execOutput.Results[fmt.Sprintf("%s/%s/%s", pod.Namespace, pod.Name, execCollector.Name)] = b | ||
| } | ||
|
|
||
| if redact { | ||
| execOutput, err = execOutput.Redact() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| b, err := json.MarshalIndent(execOutput, "", " ") | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| fmt.Printf("%s\n", b) | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func getExecOutputs(client *kubernetes.Clientset, pod corev1.Pod, execCollector *troubleshootv1beta1.Exec, doRedact bool) (*execResult, error) { | ||
| cfg, err := config.GetConfig() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| container := pod.Spec.Containers[0].Name | ||
| if execCollector.ContainerName != "" { | ||
| container = execCollector.ContainerName | ||
| } | ||
|
|
||
| req := client.CoreV1().RESTClient().Post().Resource("pods").Name(pod.Name).Namespace(pod.Namespace).SubResource("exec") | ||
| scheme := runtime.NewScheme() | ||
| if err := corev1.AddToScheme(scheme); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| parameterCodec := runtime.NewParameterCodec(scheme) | ||
| req.VersionedParams(&corev1.PodExecOptions{ | ||
| Command: append(execCollector.Command, execCollector.Args...), | ||
| Container: container, | ||
| Stdin: true, | ||
| Stdout: false, | ||
| Stderr: true, | ||
| TTY: false, | ||
| }, parameterCodec) | ||
|
|
||
| exec, err := remotecommand.NewSPDYExecutor(cfg, "POST", req.URL()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| stdout := new(bytes.Buffer) | ||
| stderr := new(bytes.Buffer) | ||
|
|
||
| err = exec.Stream(remotecommand.StreamOptions{ | ||
| Stdin: nil, | ||
| Stdout: stdout, | ||
| Stderr: stderr, | ||
| Tty: false, | ||
| }) | ||
|
|
||
| return &execResult{ | ||
| Stdout: stdout.String(), | ||
| Stderr: stderr.String(), | ||
| Error: err, | ||
| }, nil | ||
| } | ||
|
|
||
| func (r *ExecOutput) Redact() (*ExecOutput, error) { | ||
| results, err := redactMap(r.Results) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &ExecOutput{ | ||
| Results: results, | ||
| }, nil | ||
| } |
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