401 lines
9.4 KiB
Go
401 lines
9.4 KiB
Go
package driver
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"path/filepath"
|
|
"reflect"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/hashicorp/nomad/client/config"
|
|
"github.com/hashicorp/nomad/client/driver/env"
|
|
cstructs "github.com/hashicorp/nomad/client/structs"
|
|
"github.com/hashicorp/nomad/nomad/structs"
|
|
"github.com/hashicorp/nomad/testutil"
|
|
|
|
ctestutils "github.com/hashicorp/nomad/client/testutil"
|
|
)
|
|
|
|
func TestExecDriver_Fingerprint(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
task := &structs.Task{
|
|
Name: "foo",
|
|
Driver: "exec",
|
|
Resources: structs.DefaultResources(),
|
|
}
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
node := &structs.Node{
|
|
Attributes: map[string]string{
|
|
"unique.cgroup.mountpoint": "/sys/fs/cgroup",
|
|
},
|
|
}
|
|
|
|
request := &cstructs.FingerprintRequest{Config: &config.Config{}, Node: node}
|
|
var response cstructs.FingerprintResponse
|
|
err := d.Fingerprint(request, &response)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
if !response.Detected {
|
|
t.Fatalf("expected response to be applicable")
|
|
}
|
|
|
|
if response.Attributes == nil || response.Attributes["driver.exec"] == "" {
|
|
t.Fatalf("missing driver")
|
|
}
|
|
}
|
|
|
|
func TestExecDriver_StartOpen_Wait(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
task := &structs.Task{
|
|
Name: "sleep",
|
|
Driver: "exec",
|
|
Config: map[string]interface{}{
|
|
"command": "/bin/sleep",
|
|
"args": []string{"5"},
|
|
},
|
|
LogConfig: &structs.LogConfig{
|
|
MaxFiles: 10,
|
|
MaxFileSizeMB: 10,
|
|
},
|
|
Resources: basicResources,
|
|
}
|
|
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
|
|
if _, err := d.Prestart(ctx.ExecCtx, task); err != nil {
|
|
t.Fatalf("prestart err: %v", err)
|
|
}
|
|
resp, err := d.Start(ctx.ExecCtx, task)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
// Attempt to open
|
|
handle2, err := d.Open(ctx.ExecCtx, resp.Handle.ID())
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
if handle2 == nil {
|
|
t.Fatalf("missing handle")
|
|
}
|
|
|
|
resp.Handle.Kill()
|
|
handle2.Kill()
|
|
}
|
|
|
|
func TestExecDriver_Start_Wait(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
task := &structs.Task{
|
|
Name: "sleep",
|
|
Driver: "exec",
|
|
Config: map[string]interface{}{
|
|
"command": "/bin/sleep",
|
|
"args": []string{"2"},
|
|
},
|
|
LogConfig: &structs.LogConfig{
|
|
MaxFiles: 10,
|
|
MaxFileSizeMB: 10,
|
|
},
|
|
Resources: basicResources,
|
|
}
|
|
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
|
|
if _, err := d.Prestart(ctx.ExecCtx, task); err != nil {
|
|
t.Fatalf("prestart err: %v", err)
|
|
}
|
|
resp, err := d.Start(ctx.ExecCtx, task)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
// Update should be a no-op
|
|
err = resp.Handle.Update(task)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
// Task should terminate quickly
|
|
select {
|
|
case res := <-resp.Handle.WaitCh():
|
|
if !res.Successful() {
|
|
t.Fatalf("err: %v", res)
|
|
}
|
|
case <-time.After(time.Duration(testutil.TestMultiplier()*5) * time.Second):
|
|
t.Fatalf("timeout")
|
|
}
|
|
}
|
|
|
|
func TestExecDriver_Start_Wait_AllocDir(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
|
|
exp := []byte{'w', 'i', 'n'}
|
|
file := "output.txt"
|
|
task := &structs.Task{
|
|
Name: "sleep",
|
|
Driver: "exec",
|
|
Config: map[string]interface{}{
|
|
"command": "/bin/bash",
|
|
"args": []string{
|
|
"-c",
|
|
fmt.Sprintf(`sleep 1; echo -n %s > ${%s}/%s`, string(exp), env.AllocDir, file),
|
|
},
|
|
},
|
|
LogConfig: &structs.LogConfig{
|
|
MaxFiles: 10,
|
|
MaxFileSizeMB: 10,
|
|
},
|
|
Resources: basicResources,
|
|
}
|
|
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
|
|
if _, err := d.Prestart(ctx.ExecCtx, task); err != nil {
|
|
t.Fatalf("prestart err: %v", err)
|
|
}
|
|
resp, err := d.Start(ctx.ExecCtx, task)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
// Task should terminate quickly
|
|
select {
|
|
case res := <-resp.Handle.WaitCh():
|
|
if !res.Successful() {
|
|
t.Fatalf("err: %v", res)
|
|
}
|
|
case <-time.After(time.Duration(testutil.TestMultiplier()*5) * time.Second):
|
|
t.Fatalf("timeout")
|
|
}
|
|
|
|
// Check that data was written to the shared alloc directory.
|
|
outputFile := filepath.Join(ctx.AllocDir.SharedDir, file)
|
|
act, err := ioutil.ReadFile(outputFile)
|
|
if err != nil {
|
|
t.Fatalf("Couldn't read expected output: %v", err)
|
|
}
|
|
|
|
if !reflect.DeepEqual(act, exp) {
|
|
t.Fatalf("Command outputted %v; want %v", act, exp)
|
|
}
|
|
}
|
|
|
|
func TestExecDriver_Start_Kill_Wait(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
task := &structs.Task{
|
|
Name: "sleep",
|
|
Driver: "exec",
|
|
Config: map[string]interface{}{
|
|
"command": "/bin/sleep",
|
|
"args": []string{"100"},
|
|
},
|
|
LogConfig: &structs.LogConfig{
|
|
MaxFiles: 10,
|
|
MaxFileSizeMB: 10,
|
|
},
|
|
Resources: basicResources,
|
|
KillTimeout: 10 * time.Second,
|
|
}
|
|
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
|
|
if _, err := d.Prestart(ctx.ExecCtx, task); err != nil {
|
|
t.Fatalf("prestart err: %v", err)
|
|
}
|
|
resp, err := d.Start(ctx.ExecCtx, task)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
go func() {
|
|
time.Sleep(100 * time.Millisecond)
|
|
err := resp.Handle.Kill()
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
}()
|
|
|
|
// Task should terminate quickly
|
|
select {
|
|
case res := <-resp.Handle.WaitCh():
|
|
if res.Successful() {
|
|
t.Fatal("should err")
|
|
}
|
|
case <-time.After(time.Duration(testutil.TestMultiplier()*10) * time.Second):
|
|
t.Fatalf("timeout")
|
|
}
|
|
}
|
|
|
|
func TestExecDriverUser(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
task := &structs.Task{
|
|
Name: "sleep",
|
|
Driver: "exec",
|
|
User: "alice",
|
|
Config: map[string]interface{}{
|
|
"command": "/bin/sleep",
|
|
"args": []string{"100"},
|
|
},
|
|
LogConfig: &structs.LogConfig{
|
|
MaxFiles: 10,
|
|
MaxFileSizeMB: 10,
|
|
},
|
|
Resources: basicResources,
|
|
KillTimeout: 10 * time.Second,
|
|
}
|
|
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
|
|
if _, err := d.Prestart(ctx.ExecCtx, task); err != nil {
|
|
t.Fatalf("prestart err: %v", err)
|
|
}
|
|
resp, err := d.Start(ctx.ExecCtx, task)
|
|
if err == nil {
|
|
resp.Handle.Kill()
|
|
t.Fatalf("Should've failed")
|
|
}
|
|
msg := "user alice"
|
|
if !strings.Contains(err.Error(), msg) {
|
|
t.Fatalf("Expecting '%v' in '%v'", msg, err)
|
|
}
|
|
}
|
|
|
|
// TestExecDriver_HandlerExec ensures the exec driver's handle properly
|
|
// executes commands inside the container.
|
|
func TestExecDriver_HandlerExec(t *testing.T) {
|
|
if !testutil.IsTravis() {
|
|
t.Parallel()
|
|
}
|
|
ctestutils.ExecCompatible(t)
|
|
task := &structs.Task{
|
|
Name: "sleep",
|
|
Driver: "exec",
|
|
Config: map[string]interface{}{
|
|
"command": "/bin/sleep",
|
|
"args": []string{"9000"},
|
|
},
|
|
LogConfig: &structs.LogConfig{
|
|
MaxFiles: 10,
|
|
MaxFileSizeMB: 10,
|
|
},
|
|
Resources: basicResources,
|
|
}
|
|
|
|
ctx := testDriverContexts(t, task)
|
|
defer ctx.AllocDir.Destroy()
|
|
d := NewExecDriver(ctx.DriverCtx)
|
|
|
|
if _, err := d.Prestart(ctx.ExecCtx, task); err != nil {
|
|
t.Fatalf("prestart err: %v", err)
|
|
}
|
|
resp, err := d.Start(ctx.ExecCtx, task)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
handle := resp.Handle
|
|
|
|
// Exec a command that should work and dump the environment
|
|
out, code, err := handle.Exec(context.Background(), "/bin/sh", []string{"-c", "env | grep ^NOMAD"})
|
|
if err != nil {
|
|
t.Fatalf("error exec'ing stat: %v", err)
|
|
}
|
|
if code != 0 {
|
|
t.Fatalf("expected `stat /alloc` to succeed but exit code was: %d", code)
|
|
}
|
|
|
|
// Assert exec'd commands are run in a task-like environment
|
|
scriptEnv := make(map[string]string)
|
|
for _, line := range strings.Split(string(out), "\n") {
|
|
if line == "" {
|
|
continue
|
|
}
|
|
parts := strings.SplitN(string(line), "=", 2)
|
|
if len(parts) != 2 {
|
|
t.Fatalf("Invalid env var: %q", line)
|
|
}
|
|
scriptEnv[parts[0]] = parts[1]
|
|
}
|
|
if v, ok := scriptEnv["NOMAD_SECRETS_DIR"]; !ok || v != "/secrets" {
|
|
t.Errorf("Expected NOMAD_SECRETS_DIR=/secrets but found=%t value=%q", ok, v)
|
|
}
|
|
if v, ok := scriptEnv["NOMAD_ALLOC_ID"]; !ok || v != ctx.DriverCtx.allocID {
|
|
t.Errorf("Expected NOMAD_SECRETS_DIR=%q but found=%t value=%q", ctx.DriverCtx.allocID, ok, v)
|
|
}
|
|
|
|
// Assert cgroup membership
|
|
out, code, err = handle.Exec(context.Background(), "/bin/cat", []string{"/proc/self/cgroup"})
|
|
if err != nil {
|
|
t.Fatalf("error exec'ing cat /proc/self/cgroup: %v", err)
|
|
}
|
|
if code != 0 {
|
|
t.Fatalf("expected `cat /proc/self/cgroup` to succeed but exit code was: %d", code)
|
|
}
|
|
found := false
|
|
for _, line := range strings.Split(string(out), "\n") {
|
|
// Every cgroup entry should be /nomad/$ALLOC_ID
|
|
if line == "" {
|
|
continue
|
|
}
|
|
if !strings.Contains(line, ":/nomad/") {
|
|
t.Errorf("Not a member of the alloc's cgroup: expected=...:/nomad/... -- found=%q", line)
|
|
continue
|
|
}
|
|
found = true
|
|
}
|
|
if !found {
|
|
t.Errorf("exec'd command isn't in the task's cgroup")
|
|
}
|
|
|
|
// Exec a command that should fail
|
|
out, code, err = handle.Exec(context.Background(), "/usr/bin/stat", []string{"lkjhdsaflkjshowaisxmcvnlia"})
|
|
if err != nil {
|
|
t.Fatalf("error exec'ing stat: %v", err)
|
|
}
|
|
if code == 0 {
|
|
t.Fatalf("expected `stat` to fail but exit code was: %d", code)
|
|
}
|
|
if expected := "No such file or directory"; !bytes.Contains(out, []byte(expected)) {
|
|
t.Fatalf("expected output to contain %q but found: %q", expected, out)
|
|
}
|
|
|
|
if err := handle.Kill(); err != nil {
|
|
t.Fatalf("error killing exec handle: %v", err)
|
|
}
|
|
}
|