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package e2e
import (
"encoding/json"
"fmt"
"math/rand"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
"github.com/containers/podman/v4/pkg/machine"
"github.com/containers/podman/v4/pkg/machine/qemu"
"github.com/containers/podman/v4/pkg/util"
. "github.com/onsi/ginkgo" //nolint:golint,stylecheck
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gexec"
. "github.com/onsi/gomega/gexec" //nolint:golint,stylecheck
)
var originalHomeDir = os.Getenv("HOME")
const (
defaultTimeout time.Duration = 90 * time.Second
)
type machineCommand interface {
buildCmd(m *machineTestBuilder) []string
}
type MachineTestBuilder interface {
setName(string) *MachineTestBuilder
setCmd(mc machineCommand) *MachineTestBuilder
setTimeout(duration time.Duration) *MachineTestBuilder
run() (*machineSession, error)
}
type machineSession struct {
*gexec.Session
}
type machineTestBuilder struct {
cmd []string
imagePath string
name string
names []string
podmanBinary string
timeout time.Duration
}
type qemuMachineInspectInfo struct {
State machine.Status
VM qemu.MachineVM
}
// waitWithTimeout waits for a command to complete for a given
// number of seconds
func (ms *machineSession) waitWithTimeout(timeout time.Duration) {
Eventually(ms, timeout).Should(Exit())
os.Stdout.Sync()
os.Stderr.Sync()
}
func (ms *machineSession) Bytes() []byte {
return []byte(ms.outputToString())
}
func (ms *machineSession) outputToStringSlice() []string {
var results []string
output := string(ms.Out.Contents())
for _, line := range strings.Split(output, "\n") {
if line != "" {
results = append(results, line)
}
}
return results
}
// outputToString returns the output from a session in string form
func (ms *machineSession) outputToString() string {
if ms == nil || ms.Out == nil || ms.Out.Contents() == nil {
return ""
}
fields := strings.Fields(string(ms.Out.Contents()))
return strings.Join(fields, " ")
}
// errorToString returns the error output from a session in string form
func (ms *machineSession) errorToString() string {
if ms == nil || ms.Err == nil || ms.Err.Contents() == nil {
return ""
}
return string(ms.Err.Contents())
}
// newMB constructor for machine test builders
func newMB() (*machineTestBuilder, error) {
mb := machineTestBuilder{
timeout: defaultTimeout,
}
cwd, err := os.Getwd()
if err != nil {
return nil, err
}
mb.podmanBinary = filepath.Join(cwd, "../../../bin/podman-remote")
if os.Getenv("PODMAN_BINARY") != "" {
mb.podmanBinary = os.Getenv("PODMAN_BINARY")
}
return &mb, nil
}
// setName sets the name of the virtuaql machine for the command
func (m *machineTestBuilder) setName(name string) *machineTestBuilder {
m.name = name
return m
}
// setCmd takes a machineCommand struct and assembles a cmd line
// representation of the podman machine command
func (m *machineTestBuilder) setCmd(mc machineCommand) *machineTestBuilder {
// If no name for the machine exists, we set a random name.
if !util.StringInSlice(m.name, m.names) {
if len(m.name) < 1 {
m.name = randomString(12)
}
m.names = append(m.names, m.name)
}
m.cmd = mc.buildCmd(m)
return m
}
func (m *machineTestBuilder) setTimeout(timeout time.Duration) *machineTestBuilder {
m.timeout = timeout
return m
}
// toQemuInspectInfo is only for inspecting qemu machines. Other providers will need
// to make their own.
func (mb *machineTestBuilder) toQemuInspectInfo() ([]qemuMachineInspectInfo, int, error) {
args := []string{"machine", "inspect"}
args = append(args, mb.names...)
session, err := runWrapper(mb.podmanBinary, args, defaultTimeout, true)
if err != nil {
return nil, -1, err
}
mii := []qemuMachineInspectInfo{}
err = json.Unmarshal(session.Bytes(), &mii)
return mii, session.ExitCode(), err
}
func (m *machineTestBuilder) runWithoutWait() (*machineSession, error) {
return runWrapper(m.podmanBinary, m.cmd, m.timeout, false)
}
func (m *machineTestBuilder) run() (*machineSession, error) {
return runWrapper(m.podmanBinary, m.cmd, m.timeout, true)
}
func runWrapper(podmanBinary string, cmdArgs []string, timeout time.Duration, wait bool) (*machineSession, error) {
if len(os.Getenv("DEBUG")) > 0 {
cmdArgs = append([]string{"--log-level=debug"}, cmdArgs...)
}
fmt.Println(podmanBinary + " " + strings.Join(cmdArgs, " "))
c := exec.Command(podmanBinary, cmdArgs...)
session, err := Start(c, GinkgoWriter, GinkgoWriter)
if err != nil {
Fail(fmt.Sprintf("Unable to start session: %q", err))
return nil, err
}
ms := machineSession{session}
if wait {
ms.waitWithTimeout(timeout)
fmt.Println("output:", ms.outputToString())
}
return &ms, nil
}
func (m *machineTestBuilder) init() {}
// randomString returns a string of given length composed of random characters
func randomString(n int) string {
var randomLetters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
b := make([]rune, n)
for i := range b {
b[i] = randomLetters[rand.Intn(len(randomLetters))]
}
return string(b)
}
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