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proxy.go
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proxy.go
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package proxy
import (
"fmt"
"strings"
"github.com/brevdev/brev-cli/pkg/cmd/cmderrors"
"github.com/brevdev/brev-cli/pkg/entity"
breverrors "github.com/brevdev/brev-cli/pkg/errors"
"github.com/brevdev/brev-cli/pkg/featureflag"
"github.com/brevdev/brev-cli/pkg/huproxyclient"
"github.com/brevdev/brev-cli/pkg/k8s"
"github.com/brevdev/brev-cli/pkg/terminal"
"github.com/hashicorp/go-version"
"github.com/spf13/cobra"
)
const (
allowedWorkspaceImage = "brevdev/ubuntu-proxy"
allowedWorkspaceImageTag = ">= 0.3"
allowedWorkspaceInfraVersion = ">= 1.7"
)
type ProxyStore interface {
huproxyclient.HubProxyStore
GetWorkspace(workspaceID string) (*entity.Workspace, error)
WritePrivateKey(pem string) error
GetCurrentUserKeys() (*entity.UserKeys, error)
}
func NewCmdProxy(t *terminal.Terminal, store ProxyStore) *cobra.Command {
cmd := &cobra.Command{
Annotations: map[string]string{"hidden": ""},
Use: "proxy",
DisableFlagsInUseLine: true,
Short: "http upgrade proxy",
Long: "http upgrade proxy for ssh ProxyCommand directive to use",
Args: cmderrors.TransformToValidationError(cobra.ExactArgs(1)),
RunE: func(cmd *cobra.Command, args []string) error {
err := Proxy(t, store, args[0])
if err != nil {
return breverrors.WrapAndTrace(err)
}
return nil
},
}
return cmd
}
func Proxy(_ *terminal.Terminal, store ProxyStore, workspaceID string) error {
workspace, err := store.GetWorkspace(workspaceID)
if err != nil {
return breverrors.WrapAndTrace(err)
}
err = CheckWorkspaceCanSSH(workspace)
if err != nil {
return breverrors.WrapAndTrace(err)
}
err = WriteUserPrivateKey(store)
if err != nil {
return breverrors.WrapAndTrace(err)
}
url := makeProxyURL(workspace)
err = huproxyclient.Run(url, store)
if err != nil {
return breverrors.WrapAndTrace(err)
}
return nil
}
func makeProxyURL(w *entity.Workspace) string {
return fmt.Sprintf("wss://%s/proxy", w.GetSSHURL())
}
func CheckWorkspaceCanSSH(workspace *entity.Workspace) error {
if !featureflag.DisableSSHProxyVersionCheck() {
fmt.Println("checking workspace version")
err := checkWorkspaceInfraVersionOrErr(workspace)
if err != nil {
return breverrors.WrapAndTrace(err)
}
fmt.Println("checking workspace image version")
err = checkWorkspaceImageVersionOrErr(workspace)
if err != nil {
return breverrors.WrapAndTrace(err)
}
}
err := checkWorkspaceStatusOrErr(workspace)
if err != nil {
return breverrors.WrapAndTrace(err)
}
return nil
}
func checkWorkspaceStatusOrErr(workspace *entity.Workspace) error {
if workspace.Status != entity.Running {
return breverrors.NewValidationError(fmt.Sprintf("workspace is not in RUNNING state, status: %s", workspace.Status))
}
return nil
}
func checkWorkspaceImageVersionOrErr(workspace *entity.Workspace) error {
imageSplit := strings.Split(workspace.WorkspaceTemplate.Image, ":")
if len(imageSplit) != 2 {
return breverrors.NewValidationError("problem parsing workspace image tag")
}
wiv, err := version.NewVersion(imageSplit[1])
if err != nil {
if !strings.Contains(err.Error(), "Malformed") {
return breverrors.WrapAndTrace(err)
} else {
_ = 0
// skip checking constraints since probably a test image
}
} else {
imageContraints, err := version.NewConstraint(allowedWorkspaceImageTag)
if err != nil {
return breverrors.WrapAndTrace(err)
}
if !imageContraints.Check(wiv) && !strings.HasSuffix(imageSplit[0], allowedWorkspaceImage) {
return breverrors.NewValidationError(fmt.Sprintf("workspace image version %s is not supported with this cli version\n upgrade your workspace or downgrade your cli", workspace.WorkspaceTemplate.Image))
}
}
return nil
}
func checkWorkspaceInfraVersionOrErr(workspace *entity.Workspace) error {
fmt.Printf("workspace version: %s\n", workspace.Version)
if workspace.Version != "" {
wv, err := version.NewVersion(workspace.Version)
if err != nil {
return breverrors.WrapAndTrace(err)
}
workspaceInfraConstraints, err := version.NewConstraint(allowedWorkspaceInfraVersion)
if err != nil {
return breverrors.WrapAndTrace(err)
}
if !workspaceInfraConstraints.Check(wv) {
return breverrors.NewValidationError(fmt.Sprintf("workspace of version %s is not supported with this cli version\n upgrade your workspace or downgrade your cli. Supported %s", workspace.Version, allowedWorkspaceInfraVersion))
}
} else {
fmt.Println("workspace version blank assuming dev, not checking constraint")
}
return nil
}
func WriteUserPrivateKey(store ProxyStore) error {
workspaceGroupClientMapper, err := k8s.NewDefaultWorkspaceGroupClientMapper(
store,
)
if err != nil {
return breverrors.WrapAndTrace(err)
}
privateKey := workspaceGroupClientMapper.GetPrivateKey()
err = store.WritePrivateKey(privateKey)
if err != nil {
return breverrors.WrapAndTrace(err)
}
return nil
}