kubeshark/cli/cmd/common.go
RamiBerm 18be46809e
TRA-3903 minor daemon mode refactor (#479)
* Update common.go and tapRunner.go

* Update common.go
2021-11-17 11:18:08 +02:00

112 lines
3.8 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

package cmd
import (
"context"
"errors"
"fmt"
"github.com/up9inc/mizu/cli/apiserver"
"github.com/up9inc/mizu/cli/mizu"
"github.com/up9inc/mizu/cli/mizu/fsUtils"
"github.com/up9inc/mizu/cli/telemetry"
"os"
"os/signal"
"path"
"syscall"
"time"
"github.com/up9inc/mizu/cli/config"
"github.com/up9inc/mizu/cli/config/configStructs"
"github.com/up9inc/mizu/cli/errormessage"
"github.com/up9inc/mizu/cli/uiUtils"
"github.com/up9inc/mizu/shared/kubernetes"
"github.com/up9inc/mizu/shared/logger"
)
func GetApiServerUrl() string {
return fmt.Sprintf("http://%s", kubernetes.GetMizuApiServerProxiedHostAndPath(config.Config.Tap.GuiPort))
}
func startProxyReportErrorIfAny(kubernetesProvider *kubernetes.Provider, cancel context.CancelFunc) {
err := kubernetes.StartProxy(kubernetesProvider, config.Config.Tap.ProxyHost, config.Config.Tap.GuiPort, config.Config.MizuResourcesNamespace, kubernetes.ApiServerPodName)
if err != nil {
logger.Log.Errorf(uiUtils.Error, fmt.Sprintf("Error occured while running k8s proxy %v\n"+
"Try setting different port by using --%s", errormessage.FormatError(err), configStructs.GuiPortTapName))
cancel()
}
logger.Log.Debugf("proxy ended")
}
func waitForFinish(ctx context.Context, cancel context.CancelFunc) {
logger.Log.Debugf("waiting for finish...")
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
// block until ctx cancel is called or termination signal is received
select {
case <-ctx.Done():
logger.Log.Debugf("ctx done")
break
case <-sigChan:
logger.Log.Debugf("Got termination signal, canceling execution...")
cancel()
}
}
func getKubernetesProviderForCli() (*kubernetes.Provider, error) {
kubernetesProvider, err := kubernetes.NewProvider(config.Config.KubeConfigPath())
if err != nil {
handleKubernetesProviderError(err)
return nil, err
}
return kubernetesProvider, nil
}
func handleKubernetesProviderError(err error) {
var clusterBehindProxyErr *kubernetes.ClusterBehindProxyError
if ok := errors.As(err, &clusterBehindProxyErr); ok {
logger.Log.Errorf("cannot establish http-proxy connection to the Kubernetes cluster. If youre using Lens or similar tool, please run mizu with regular kubectl config using --%v %v=$HOME/.kube/config flag", config.SetCommandName, config.KubeConfigPathConfigName)
} else {
logger.Log.Error(err)
}
}
func finishMizuExecution(kubernetesProvider *kubernetes.Provider, apiProvider *apiserver.Provider) {
telemetry.ReportAPICalls(apiProvider)
removalCtx, cancel := context.WithTimeout(context.Background(), cleanupTimeout)
defer cancel()
dumpLogsIfNeeded(removalCtx, kubernetesProvider)
cleanUpMizuResources(removalCtx, cancel, kubernetesProvider)
}
func dumpLogsIfNeeded(ctx context.Context, kubernetesProvider *kubernetes.Provider) {
if !config.Config.DumpLogs {
return
}
mizuDir := mizu.GetMizuFolderPath()
filePath := path.Join(mizuDir, fmt.Sprintf("mizu_logs_%s.zip", time.Now().Format("2006_01_02__15_04_05")))
if err := fsUtils.DumpLogs(ctx, kubernetesProvider, filePath); err != nil {
logger.Log.Errorf("Failed dump logs %v", err)
}
}
func cleanUpMizuResources(ctx context.Context, cancel context.CancelFunc, kubernetesProvider *kubernetes.Provider) {
logger.Log.Infof("\nRemoving mizu resources")
var leftoverResources []string
if config.Config.IsNsRestrictedMode() {
leftoverResources = cleanUpRestrictedMode(ctx, kubernetesProvider)
} else {
leftoverResources = cleanUpNonRestrictedMode(ctx, cancel, kubernetesProvider)
}
if len(leftoverResources) > 0 {
errMsg := fmt.Sprintf("Failed to remove the following resources, for more info check logs at %s:", fsUtils.GetLogFilePath())
for _, resource := range leftoverResources {
errMsg += "\n- " + resource
}
logger.Log.Errorf(uiUtils.Error, errMsg)
}
}