github.com/hernad/nomad@v1.6.112/drivers/docker/driver_linux_test.go (about)

     1  // Copyright (c) HashiCorp, Inc.
     2  // SPDX-License-Identifier: MPL-2.0
     3  
     4  //go:build linux
     5  
     6  package docker
     7  
     8  import (
     9  	"fmt"
    10  	"os"
    11  	"path/filepath"
    12  	"strings"
    13  	"testing"
    14  
    15  	"github.com/hernad/nomad/ci"
    16  	"github.com/hernad/nomad/client/testutil"
    17  	"github.com/hernad/nomad/helper/pointer"
    18  	tu "github.com/hernad/nomad/testutil"
    19  	"github.com/stretchr/testify/require"
    20  )
    21  
    22  func TestDockerDriver_authFromHelper(t *testing.T) {
    23  	testutil.DockerCompatible(t)
    24  
    25  	dir := t.TempDir()
    26  	helperPayload := "{\"Username\":\"hashi\",\"Secret\":\"nomad\"}"
    27  	helperContent := []byte(fmt.Sprintf("#!/bin/sh\ncat > %s/helper-$1.out;echo '%s'", dir, helperPayload))
    28  
    29  	helperFile := filepath.Join(dir, "docker-credential-testnomad")
    30  	err := os.WriteFile(helperFile, helperContent, 0777)
    31  	require.NoError(t, err)
    32  
    33  	path := os.Getenv("PATH")
    34  	t.Setenv("PATH", fmt.Sprintf("%s:%s", path, dir))
    35  
    36  	authHelper := authFromHelper("testnomad")
    37  	creds, err := authHelper("registry.local:5000/repo/image")
    38  	require.NoError(t, err)
    39  	require.NotNil(t, creds)
    40  	require.Equal(t, "hashi", creds.Username)
    41  	require.Equal(t, "nomad", creds.Password)
    42  
    43  	if _, err := os.Stat(filepath.Join(dir, "helper-get.out")); os.IsNotExist(err) {
    44  		t.Fatalf("Expected helper-get.out to exist")
    45  	}
    46  	content, err := os.ReadFile(filepath.Join(dir, "helper-get.out"))
    47  	require.NoError(t, err)
    48  	require.Equal(t, "registry.local:5000", string(content))
    49  }
    50  
    51  func TestDockerDriver_PluginConfig_PidsLimit(t *testing.T) {
    52  	ci.Parallel(t)
    53  	testutil.DockerCompatible(t)
    54  
    55  	dh := dockerDriverHarness(t, nil)
    56  	driver := dh.Impl().(*Driver)
    57  	driver.config.PidsLimit = 5
    58  
    59  	task, cfg, _ := dockerTask(t)
    60  	require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
    61  
    62  	cfg.PidsLimit = 7
    63  	_, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
    64  	require.Error(t, err)
    65  	require.Contains(t, err.Error(), `pids_limit cannot be greater than nomad plugin config pids_limit`)
    66  
    67  	// Task PidsLimit should override plugin PidsLimit.
    68  	cfg.PidsLimit = 3
    69  	opts, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
    70  	require.NoError(t, err)
    71  	require.Equal(t, pointer.Of(int64(3)), opts.HostConfig.PidsLimit)
    72  }
    73  
    74  func TestDockerDriver_PidsLimit(t *testing.T) {
    75  	ci.Parallel(t)
    76  	testutil.DockerCompatible(t)
    77  
    78  	task, cfg, _ := dockerTask(t)
    79  
    80  	cfg.PidsLimit = 1
    81  	cfg.Command = "/bin/sh"
    82  	cfg.Args = []string{"-c", "sleep 5 & sleep 5 & sleep 5"}
    83  	require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
    84  
    85  	_, _, _, cleanup := dockerSetup(t, task, nil)
    86  	defer cleanup()
    87  
    88  	// Check that data was written to the directory.
    89  	outputFile := filepath.Join(task.TaskDir().LogDir, "redis-demo.stderr.0")
    90  	exp := "can't fork"
    91  	tu.WaitForResult(func() (bool, error) {
    92  		act, err := os.ReadFile(outputFile)
    93  		if err != nil {
    94  			return false, err
    95  		}
    96  		if !strings.Contains(string(act), exp) {
    97  			return false, fmt.Errorf("Expected %q in output %q", exp, string(act))
    98  		}
    99  		return true, nil
   100  	}, func(err error) {
   101  		require.NoError(t, err)
   102  	})
   103  }