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https://github.com/kubeshark/kubeshark.git
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e1ad302c29
* Make `logger` a separate module such that don't depend on `shared` module as a whole for logging * Update `Dockerfile`
85 lines
2.8 KiB
Go
85 lines
2.8 KiB
Go
package check
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import (
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"context"
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"fmt"
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"regexp"
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"github.com/up9inc/mizu/cli/apiserver"
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"github.com/up9inc/mizu/cli/config"
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"github.com/up9inc/mizu/cli/uiUtils"
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"github.com/up9inc/mizu/logger"
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"github.com/up9inc/mizu/shared/kubernetes"
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)
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func ServerConnection(kubernetesProvider *kubernetes.Provider) bool {
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logger.Log.Infof("\nAPI-server-connectivity\n--------------------")
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serverUrl := fmt.Sprintf("http://%s", kubernetes.GetMizuApiServerProxiedHostAndPath(config.Config.Tap.GuiPort))
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apiServerProvider := apiserver.NewProvider(serverUrl, 1, apiserver.DefaultTimeout)
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if err := apiServerProvider.TestConnection(); err == nil {
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logger.Log.Infof("%v found Mizu server tunnel available and connected successfully to API server", fmt.Sprintf(uiUtils.Green, "√"))
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return true
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}
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connectedToApiServer := false
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if err := checkProxy(serverUrl, kubernetesProvider); err != nil {
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logger.Log.Errorf("%v couldn't connect to API server using proxy, err: %v", fmt.Sprintf(uiUtils.Red, "✗"), err)
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} else {
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connectedToApiServer = true
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logger.Log.Infof("%v connected successfully to API server using proxy", fmt.Sprintf(uiUtils.Green, "√"))
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}
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if err := checkPortForward(serverUrl, kubernetesProvider); err != nil {
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logger.Log.Errorf("%v couldn't connect to API server using port-forward, err: %v", fmt.Sprintf(uiUtils.Red, "✗"), err)
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} else {
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connectedToApiServer = true
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logger.Log.Infof("%v connected successfully to API server using port-forward", fmt.Sprintf(uiUtils.Green, "√"))
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}
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return connectedToApiServer
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}
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func checkProxy(serverUrl string, kubernetesProvider *kubernetes.Provider) error {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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httpServer, err := kubernetes.StartProxy(kubernetesProvider, config.Config.Tap.ProxyHost, config.Config.Tap.GuiPort, config.Config.MizuResourcesNamespace, kubernetes.ApiServerPodName, cancel)
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if err != nil {
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return err
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}
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apiServerProvider := apiserver.NewProvider(serverUrl, apiserver.DefaultRetries, apiserver.DefaultTimeout)
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if err := apiServerProvider.TestConnection(); err != nil {
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return err
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}
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if err := httpServer.Shutdown(ctx); err != nil {
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logger.Log.Debugf("Error occurred while stopping proxy, err: %v", err)
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}
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return nil
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}
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func checkPortForward(serverUrl string, kubernetesProvider *kubernetes.Provider) error {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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podRegex, _ := regexp.Compile(kubernetes.ApiServerPodName)
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forwarder, err := kubernetes.NewPortForward(kubernetesProvider, config.Config.MizuResourcesNamespace, podRegex, config.Config.Tap.GuiPort, ctx, cancel)
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if err != nil {
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return err
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}
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apiServerProvider := apiserver.NewProvider(serverUrl, apiserver.DefaultRetries, apiserver.DefaultTimeout)
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if err := apiServerProvider.TestConnection(); err != nil {
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return err
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}
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forwarder.Close()
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return nil
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}
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