420 lines
11 KiB
Go
420 lines
11 KiB
Go
package driver
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import (
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"io"
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"log"
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"math/rand"
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"os"
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"path/filepath"
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"reflect"
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"testing"
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"time"
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"github.com/hashicorp/nomad/client/allocdir"
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"github.com/hashicorp/nomad/client/config"
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"github.com/hashicorp/nomad/client/driver/env"
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"github.com/hashicorp/nomad/helper/testtask"
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"github.com/hashicorp/nomad/nomad/mock"
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"github.com/hashicorp/nomad/nomad/structs"
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)
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var basicResources = &structs.Resources{
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CPU: 250,
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MemoryMB: 256,
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DiskMB: 20,
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Networks: []*structs.NetworkResource{
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&structs.NetworkResource{
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IP: "0.0.0.0",
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ReservedPorts: []structs.Port{{Label: "main", Value: 12345}},
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DynamicPorts: []structs.Port{{Label: "HTTP", Value: 43330}},
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},
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},
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}
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func init() {
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rand.Seed(49875)
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}
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func TestMain(m *testing.M) {
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if !testtask.Run() {
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os.Exit(m.Run())
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}
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}
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// copyFile moves an existing file to the destination
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func copyFile(src, dst string, t *testing.T) {
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in, err := os.Open(src)
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if err != nil {
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t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
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}
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defer in.Close()
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out, err := os.Create(dst)
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if err != nil {
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t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
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}
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defer func() {
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if err := out.Close(); err != nil {
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t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
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}
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}()
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if _, err = io.Copy(out, in); err != nil {
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t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
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}
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if err := out.Sync(); err != nil {
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t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
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}
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}
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func testLogger() *log.Logger {
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return log.New(os.Stderr, "", log.LstdFlags)
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}
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func testConfig() *config.Config {
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conf := config.DefaultConfig()
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conf.StateDir = os.TempDir()
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conf.AllocDir = os.TempDir()
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conf.MaxKillTimeout = 10 * time.Second
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return conf
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}
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type testContext struct {
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AllocDir *allocdir.AllocDir
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DriverCtx *DriverContext
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ExecCtx *ExecContext
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}
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// testDriverContext sets up an alloc dir, task dir, DriverContext, and ExecContext.
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//
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// It is up to the caller to call AllocDir.Destroy to cleanup.
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func testDriverContexts(t *testing.T, task *structs.Task) *testContext {
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cfg := testConfig()
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allocDir := allocdir.NewAllocDir(testLogger(), filepath.Join(cfg.AllocDir, structs.GenerateUUID()))
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if err := allocDir.Build(); err != nil {
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t.Fatalf("AllocDir.Build() failed: %v", err)
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}
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alloc := mock.Alloc()
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// Build a temp driver so we can call FSIsolation and build the task dir
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tmpdrv, err := NewDriver(task.Driver, NewEmptyDriverContext())
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if err != nil {
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allocDir.Destroy()
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t.Fatalf("NewDriver(%q, nil) failed: %v", task.Driver, err)
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return nil
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}
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// Build the task dir
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td := allocDir.NewTaskDir(task.Name)
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if err := td.Build(config.DefaultChrootEnv, tmpdrv.FSIsolation()); err != nil {
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allocDir.Destroy()
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t.Fatalf("TaskDir.Build(%#v, %q) failed: %v", config.DefaultChrootEnv, tmpdrv.FSIsolation(), err)
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return nil
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}
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execCtx := NewExecContext(td, alloc.ID)
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taskEnv, err := GetTaskEnv(td, cfg.Node, task, alloc, cfg, "")
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if err != nil {
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allocDir.Destroy()
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t.Fatalf("GetTaskEnv() failed: %v", err)
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return nil
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}
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logger := testLogger()
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emitter := func(m string, args ...interface{}) {
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logger.Printf("[EVENT] "+m, args...)
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}
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driverCtx := NewDriverContext(task.Name, cfg, cfg.Node, logger, taskEnv, emitter)
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return &testContext{allocDir, driverCtx, execCtx}
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}
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// setupTaskEnv creates a test env for GetTaskEnv testing. Returns task dir,
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// expected env, and actual env.
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func setupTaskEnv(t *testing.T, driver string) (*allocdir.TaskDir, map[string]string, map[string]string) {
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task := &structs.Task{
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Name: "Foo",
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Driver: driver,
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Env: map[string]string{
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"HELLO": "world",
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"lorem": "ipsum",
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},
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Resources: &structs.Resources{
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CPU: 1000,
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MemoryMB: 500,
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Networks: []*structs.NetworkResource{
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&structs.NetworkResource{
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IP: "1.2.3.4",
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ReservedPorts: []structs.Port{{Label: "one", Value: 80}, {Label: "two", Value: 443}},
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DynamicPorts: []structs.Port{{Label: "admin", Value: 8081}, {Label: "web", Value: 8086}},
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},
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},
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},
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Meta: map[string]string{
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"chocolate": "cake",
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"strawberry": "icecream",
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},
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}
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alloc := mock.Alloc()
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alloc.Job.TaskGroups[0].Tasks[0] = task
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alloc.Name = "Bar"
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alloc.TaskResources["web"].Networks[0].DynamicPorts[0].Value = 2000
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conf := testConfig()
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allocDir := allocdir.NewAllocDir(testLogger(), filepath.Join(conf.AllocDir, alloc.ID))
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taskDir := allocDir.NewTaskDir(task.Name)
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env, err := GetTaskEnv(taskDir, nil, task, alloc, conf, "")
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if err != nil {
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t.Fatalf("GetTaskEnv() failed: %v", err)
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}
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exp := map[string]string{
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"NOMAD_CPU_LIMIT": "1000",
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"NOMAD_MEMORY_LIMIT": "500",
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"NOMAD_ADDR_one": "1.2.3.4:80",
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"NOMAD_IP_one": "1.2.3.4",
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"NOMAD_PORT_one": "80",
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"NOMAD_HOST_PORT_one": "80",
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"NOMAD_ADDR_two": "1.2.3.4:443",
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"NOMAD_IP_two": "1.2.3.4",
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"NOMAD_PORT_two": "443",
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"NOMAD_HOST_PORT_two": "443",
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"NOMAD_ADDR_admin": "1.2.3.4:8081",
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"NOMAD_ADDR_web_main": "192.168.0.100:5000",
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"NOMAD_ADDR_web_http": "192.168.0.100:2000",
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"NOMAD_IP_admin": "1.2.3.4",
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"NOMAD_PORT_admin": "8081",
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"NOMAD_HOST_PORT_admin": "8081",
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"NOMAD_ADDR_web": "1.2.3.4:8086",
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"NOMAD_IP_web": "1.2.3.4",
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"NOMAD_PORT_web": "8086",
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"NOMAD_HOST_PORT_web": "8086",
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"NOMAD_META_CHOCOLATE": "cake",
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"NOMAD_META_STRAWBERRY": "icecream",
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"NOMAD_META_ELB_CHECK_INTERVAL": "30s",
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"NOMAD_META_ELB_CHECK_TYPE": "http",
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"NOMAD_META_ELB_CHECK_MIN": "3",
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"NOMAD_META_OWNER": "armon",
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"NOMAD_META_chocolate": "cake",
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"NOMAD_META_strawberry": "icecream",
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"NOMAD_META_elb_check_interval": "30s",
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"NOMAD_META_elb_check_type": "http",
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"NOMAD_META_elb_check_min": "3",
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"NOMAD_META_owner": "armon",
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"HELLO": "world",
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"lorem": "ipsum",
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"NOMAD_ALLOC_ID": alloc.ID,
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"NOMAD_ALLOC_NAME": alloc.Name,
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"NOMAD_TASK_NAME": task.Name,
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"NOMAD_JOB_NAME": alloc.Job.Name,
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}
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act := env.EnvMap()
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return taskDir, exp, act
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}
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func TestDriver_GetTaskEnv_None(t *testing.T) {
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taskDir, exp, act := setupTaskEnv(t, "raw_exec")
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// raw_exec should use host alloc dir path
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exp[env.AllocDir] = taskDir.SharedAllocDir
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exp[env.TaskLocalDir] = taskDir.LocalDir
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exp[env.SecretsDir] = taskDir.SecretsDir
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// Since host env vars are included only ensure expected env vars are present
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for expk, expv := range exp {
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v, ok := act[expk]
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if !ok {
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t.Errorf("%q not found in task env", expk)
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continue
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}
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if v != expv {
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t.Errorf("Expected %s=%q but found %q", expk, expv, v)
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}
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}
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// Make sure common host env vars are included.
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for _, envvar := range [...]string{"PATH", "HOME", "USER"} {
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if exp := os.Getenv(envvar); act[envvar] != exp {
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t.Errorf("Expected envvar %s=%q != %q", envvar, exp, act[envvar])
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}
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}
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}
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func TestDriver_GetTaskEnv_Chroot(t *testing.T) {
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_, exp, act := setupTaskEnv(t, "exec")
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exp[env.AllocDir] = allocdir.SharedAllocContainerPath
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exp[env.TaskLocalDir] = allocdir.TaskLocalContainerPath
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exp[env.SecretsDir] = allocdir.TaskSecretsContainerPath
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// Since host env vars are included only ensure expected env vars are present
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for expk, expv := range exp {
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v, ok := act[expk]
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if !ok {
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t.Errorf("%q not found in task env", expk)
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continue
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}
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if v != expv {
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t.Errorf("Expected %s=%q but found %q", expk, expv, v)
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}
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}
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// Make sure common host env vars are included.
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for _, envvar := range [...]string{"PATH", "HOME", "USER"} {
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if exp := os.Getenv(envvar); act[envvar] != exp {
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t.Errorf("Expected envvar %s=%q != %q", envvar, exp, act[envvar])
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}
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}
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}
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// TestDriver_GetTaskEnv_Image ensures host environment variables are not set
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// for image based drivers. See #2211
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func TestDriver_GetTaskEnv_Image(t *testing.T) {
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_, exp, act := setupTaskEnv(t, "docker")
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exp[env.AllocDir] = allocdir.SharedAllocContainerPath
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exp[env.TaskLocalDir] = allocdir.TaskLocalContainerPath
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exp[env.SecretsDir] = allocdir.TaskSecretsContainerPath
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// Since host env vars are excluded expected and actual maps should be equal
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for expk, expv := range exp {
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v, ok := act[expk]
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delete(act, expk)
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if !ok {
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t.Errorf("Env var %s missing. Expected %s=%q", expk, expk, expv)
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continue
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}
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if v != expv {
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t.Errorf("Env var %s=%q -- Expected %q", expk, v, expk)
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}
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}
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// Any remaining env vars are unexpected
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for actk, actv := range act {
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t.Errorf("Env var %s=%q is unexpected", actk, actv)
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}
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}
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func TestMapMergeStrInt(t *testing.T) {
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a := map[string]int{
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"cakes": 5,
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"cookies": 3,
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}
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b := map[string]int{
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"cakes": 3,
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"pies": 2,
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}
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c := mapMergeStrInt(a, b)
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d := map[string]int{
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"cakes": 3,
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"cookies": 3,
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"pies": 2,
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}
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if !reflect.DeepEqual(c, d) {
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t.Errorf("\nExpected\n%+v\nGot\n%+v\n", d, c)
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}
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}
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func TestMapMergeStrStr(t *testing.T) {
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a := map[string]string{
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"cake": "chocolate",
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"cookie": "caramel",
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}
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b := map[string]string{
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"cake": "strawberry",
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"pie": "apple",
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}
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c := mapMergeStrStr(a, b)
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d := map[string]string{
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"cake": "strawberry",
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"cookie": "caramel",
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"pie": "apple",
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}
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if !reflect.DeepEqual(c, d) {
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t.Errorf("\nExpected\n%+v\nGot\n%+v\n", d, c)
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}
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}
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func TestCreatedResources_AddMerge(t *testing.T) {
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res1 := NewCreatedResources()
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res1.Add("k1", "v1")
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res1.Add("k1", "v2")
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res1.Add("k1", "v1")
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res1.Add("k2", "v1")
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expected := map[string][]string{
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"k1": {"v1", "v2"},
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"k2": {"v1"},
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}
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if !reflect.DeepEqual(expected, res1.Resources) {
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t.Fatalf("1. %#v != expected %#v", res1.Resources, expected)
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}
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// Make sure merging nil works
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var res2 *CreatedResources
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res1.Merge(res2)
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if !reflect.DeepEqual(expected, res1.Resources) {
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t.Fatalf("2. %#v != expected %#v", res1.Resources, expected)
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}
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// Make sure a normal merge works
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res2 = NewCreatedResources()
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res2.Add("k1", "v3")
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res2.Add("k2", "v1")
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res2.Add("k3", "v3")
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res1.Merge(res2)
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expected = map[string][]string{
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"k1": {"v1", "v2", "v3"},
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"k2": {"v1"},
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"k3": {"v3"},
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}
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if !reflect.DeepEqual(expected, res1.Resources) {
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t.Fatalf("3. %#v != expected %#v", res1.Resources, expected)
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}
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}
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func TestCreatedResources_CopyRemove(t *testing.T) {
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res1 := NewCreatedResources()
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res1.Add("k1", "v1")
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res1.Add("k1", "v2")
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res1.Add("k1", "v3")
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res1.Add("k2", "v1")
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// Assert Copy creates a deep copy
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res2 := res1.Copy()
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if !reflect.DeepEqual(res1, res2) {
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t.Fatalf("%#v != %#v", res1, res2)
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}
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// Assert removing v1 from k1 returns true and updates Resources slice
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if removed := res2.Remove("k1", "v1"); !removed {
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t.Fatalf("expected v1 to be removed: %#v", res2)
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}
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if expected := []string{"v2", "v3"}; !reflect.DeepEqual(expected, res2.Resources["k1"]) {
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t.Fatalf("unpexpected list for k1: %#v", res2.Resources["k1"])
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}
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// Assert removing the only value from a key removes the key
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if removed := res2.Remove("k2", "v1"); !removed {
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t.Fatalf("expected v1 to be removed from k2: %#v", res2.Resources)
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}
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if _, found := res2.Resources["k2"]; found {
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t.Fatalf("k2 should have been removed from Resources: %#v", res2.Resources)
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}
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// Make sure res1 wasn't updated
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if reflect.DeepEqual(res1, res2) {
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t.Fatalf("res1 should not equal res2: #%v", res1)
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}
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}
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