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workflow_test.go
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workflow_test.go
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// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package daisy
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"regexp"
"strings"
"sync"
"testing"
"time"
"cloud.google.com/go/storage"
computeAlpha "google.golang.org/api/compute/v0.alpha"
computeBeta "google.golang.org/api/compute/v0.beta"
"google.golang.org/api/compute/v1"
"google.golang.org/api/option"
)
func TestAddDependency(t *testing.T) {
w := &Workflow{}
a, _ := w.NewStep("a")
b, _ := w.NewStep("b")
otherW := &Workflow{}
c, _ := otherW.NewStep("c")
tests := []struct {
desc string
in1, in2 *Step
shouldErr bool
}{
{"good case", a, b, false},
{"idempotent good case", a, b, false},
{"bad case 1", a, c, true},
{"bad case 2", c, b, true},
}
for _, tt := range tests {
if err := w.AddDependency(tt.in1, tt.in2); err == nil && tt.shouldErr {
t.Errorf("%s: should have erred but didn't", tt.desc)
} else if err != nil && !tt.shouldErr {
t.Errorf("%s: unexpected error: %v", tt.desc, err)
}
}
wantDeps := map[string][]string{"a": {"b"}}
if diffRes := diff(w.Dependencies, wantDeps, 0); diffRes != "" {
t.Errorf("incorrect dependencies: (-got,+want)\n%s", diffRes)
}
}
func TestDaisyBkt(t *testing.T) {
client, err := newTestGCSClient()
if err != nil {
t.Fatal(err)
}
project := "foo-project"
got, err := daisyBkt(context.Background(), client, project)
if err != nil {
t.Fatal(err)
}
want := project + "-daisy-bkt"
if got != project+"-daisy-bkt" {
t.Errorf("bucket does not match, got: %q, want: %q", got, want)
}
project = "bar-project"
got, err = daisyBkt(context.Background(), client, project)
if err != nil {
t.Fatal(err)
}
want = project + "-daisy-bkt"
if got != project+"-daisy-bkt" {
t.Errorf("bucket does not match, got: %q, want: %q", got, want)
}
}
func TestCleanup(t *testing.T) {
cleanedup1 := false
cleanedup2 := false
cleanup1 := func() DError {
cleanedup1 = true
return nil
}
cleanup2 := func() DError {
cleanedup2 = true
return nil
}
cleanupFail := func() DError {
return Errf("failed cleanup")
}
w := testWorkflow()
w.addCleanupHook(cleanup1)
w.addCleanupHook(cleanupFail)
w.addCleanupHook(cleanup2)
w.cleanup()
if !cleanedup1 {
t.Error("cleanup1 was not run")
}
if !cleanedup2 {
t.Error("cleanup2 was not run")
}
}
func TestGenName(t *testing.T) {
tests := []struct{ name, wfName, wfID, want string }{
{"name", "wfname", "123456789", "name-wfname-123456789"},
{"super-long-name-really-long", "super-long-workflow-name-like-really-really-long", "1", "super-long-name-really-long-super-long-workflow-name-lik-1"},
{"super-long-name-really-long", "super-long-workflow-name-like-really-really-long", "123456789", "super-long-name-really-long-super-long-workflow-name-lik-123456"},
}
w := &Workflow{}
for _, tt := range tests {
w.id = tt.wfID
w.Name = tt.wfName
result := w.genName(tt.name)
if result != tt.want {
t.Errorf("bad result, i: name=%s wfName=%s wfId=%s; got: %s; want: %s", tt.name, tt.wfName, tt.wfID, result, tt.want)
}
if len(result) > 64 {
t.Errorf("result > 64 characters, i: name=%s wfName=%s wfId=%s; got: %s", tt.name, tt.wfName, tt.wfID, result)
}
}
}
func TestGetSourceGCSAPIPath(t *testing.T) {
w := testWorkflow()
w.sourcesPath = "my/sources"
got := w.getSourceGCSAPIPath("foo")
want := "https://storage.cloud.google.com/my/sources/foo"
if got != want {
t.Errorf("unexpected result: got: %q, want %q", got, want)
}
}
func TestCancelWorkflow_IsIdempotent(t *testing.T) {
w := testWorkflow()
if w.isCanceled {
t.Error("Didn't expect workflow to be canceled.")
}
w.CancelWorkflow()
w.CancelWorkflow()
if !w.isCanceled {
t.Error("Expect workflow to be canceled.")
}
}
func TestCancelWithReason_IsCallableMultipleTimes_AndKeepsFirstCancelReason(t *testing.T) {
w := testWorkflow()
reason1 := "reason1"
reason2 := "reason2"
w.CancelWithReason(reason1)
w.CancelWithReason(reason2)
if !w.isCanceled {
t.Error("Expect workflow to be canceled.")
}
if w.getCancelReason() != reason1 {
t.Errorf("Expected reason1 mismatch. got=%q, want=%q", w.getCancelReason(), reason1)
}
}
func TestCancelWorkflow_RecoversFromManuallyClosedChannel(t *testing.T) {
w := testWorkflow()
if w.isCanceled {
t.Error("Didn't expect workflow to be canceled.")
}
close(w.Cancel)
w.CancelWorkflow()
if !w.isCanceled {
t.Error("Expect workflow to be canceled.")
}
}
func TestNewFromFileError(t *testing.T) {
td, err := ioutil.TempDir(os.TempDir(), "")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)
}
defer os.RemoveAll(td)
tf := filepath.Join(td, "test.wf.json")
tests := []struct{ data, error string }{
{
`{"test":["1", "2",]}`,
tf + ": JSON syntax error in line 1: invalid character ']' looking for beginning of value \n{\"test\":[\"1\", \"2\",]}\n ^",
},
{
`{"test":{"key1":"value1" "key2":"value2"}}`,
tf + ": JSON syntax error in line 1: invalid character '\"' after object key:value pair \n{\"test\":{\"key1\":\"value1\" \"key2\":\"value2\"}}\n ^",
},
{
`{"test": value}`,
tf + ": JSON syntax error in line 1: invalid character 'v' looking for beginning of value \n{\"test\": value}\n ^",
},
{
`{"test": "value"`,
tf + ": JSON syntax error in line 1: unexpected end of JSON input \n{\"test\": \"value\"\n ^",
},
{
"{\n\"test\":[\"1\", \"2\",],\n\"test2\":[\"1\", \"2\"]\n}",
tf + ": JSON syntax error in line 2: invalid character ']' looking for beginning of value \n\"test\":[\"1\", \"2\",],\n ^",
},
}
for i, tt := range tests {
if err := ioutil.WriteFile(tf, []byte(tt.data), 0600); err != nil {
t.Fatalf("error creating json file: %v", err)
}
if _, err := NewFromFile(tf); err == nil {
t.Errorf("expected error, got nil for test %d", i+1)
} else if err.Error() != tt.error {
t.Errorf("did not get expected error from NewFromFile():\ngot: %q\nwant: %q", err.Error(), tt.error)
}
}
}
func TestNewFromFile(t *testing.T) {
got, derr := NewFromFile("./test_data/test.wf.json")
if derr != nil {
t.Fatal(derr)
}
wd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
want := New()
// These are difficult to validate and irrelevant, so we cheat.
want.id = got.ID()
want.Cancel = got.Cancel
want.cleanupHooks = got.cleanupHooks
want.disks = newDiskRegistry(want)
want.images = newImageRegistry(want)
want.machineImages = newMachineImageRegistry(want)
want.instances = newInstanceRegistry(want)
want.networks = newNetworkRegistry(want)
want.workflowDir = filepath.Join(wd, "test_data")
want.Name = "some-name"
want.Project = "some-project"
want.Zone = "us-central1-a"
want.GCSPath = "gs://some-bucket/images"
want.OAuthPath = filepath.Join(wd, "test_data", "somefile")
want.Sources = map[string]string{}
want.autovars = map[string]string{}
want.Vars = map[string]Var{
"bootstrap_instance_name": {Value: "bootstrap-${NAME}", Required: true},
"machine_type": {Value: "n1-standard-1"},
"key1": {Value: "var1"},
"key2": {Value: "var2"},
}
want.Steps = map[string]*Step{
"create-disks": {
name: "create-disks",
CreateDisks: &CreateDisks{
{
Disk: compute.Disk{
Name: "bootstrap",
SourceImage: "projects/windows-cloud/global/images/family/windows-server-2016-core",
Type: "pd-ssd",
},
SizeGb: "50",
},
{
Disk: compute.Disk{
Name: "image",
SourceImage: "projects/windows-cloud/global/images/family/windows-server-2016-core",
Type: "pd-standard",
},
SizeGb: "50",
},
},
},
"${bootstrap_instance_name}": {
name: "${bootstrap_instance_name}",
CreateInstances: &CreateInstances{
Instances: []*Instance{
{
Instance: compute.Instance{
Name: "${bootstrap_instance_name}",
Disks: []*compute.AttachedDisk{{Source: "bootstrap"}, {Source: "image"}},
MachineType: "${machine_type}",
},
InstanceBase: InstanceBase{
StartupScript: "shutdown /h",
Scopes: []string{"scope1", "scope2"},
},
Metadata: map[string]string{"test_metadata": "this was a test"},
},
},
InstancesBeta: []*InstanceBeta{
{
Instance: computeBeta.Instance{
Name: "${bootstrap_instance_name}",
Disks: []*computeBeta.AttachedDisk{{Source: "bootstrap"}, {Source: "image"}},
MachineType: "${machine_type}",
},
InstanceBase: InstanceBase{
StartupScript: "shutdown /h",
Scopes: []string{"scope1", "scope2"},
},
Metadata: map[string]string{"test_metadata": "this was a test"},
},
},
},
},
"${bootstrap_instance_name}-stopped": {
name: "${bootstrap_instance_name}-stopped",
Timeout: "1h",
WaitForInstancesSignal: &WaitForInstancesSignal{{Name: "${bootstrap_instance_name}", Stopped: true, Interval: "1s"}},
},
"postinstall": {
name: "postinstall",
CreateInstances: &CreateInstances{
Instances: []*Instance{
{
Instance: compute.Instance{
Name: "postinstall",
Disks: []*compute.AttachedDisk{{Source: "image"}, {Source: "bootstrap"}},
MachineType: "${machine_type}",
},
InstanceBase: InstanceBase{
StartupScript: "shutdown /h",
Scopes: []string{"scope3", "scope4"},
},
},
{
Instance: compute.Instance{
Name: "postinstallBeta",
MachineType: "${machine_type}",
},
},
},
InstancesBeta: []*InstanceBeta{
{
Instance: computeBeta.Instance{
Name: "postinstall",
Disks: []*computeBeta.AttachedDisk{{Source: "image"}, {Source: "bootstrap"}},
MachineType: "${machine_type}",
},
InstanceBase: InstanceBase{
StartupScript: "shutdown /h",
Scopes: []string{"scope3", "scope4"},
},
},
{
Instance: computeBeta.Instance{
Name: "postinstallBeta",
MachineType: "${machine_type}",
SourceMachineImage: "source-machine-image",
},
},
},
},
},
"postinstall-stopped": {
name: "postinstall-stopped",
WaitForInstancesSignal: &WaitForInstancesSignal{{Name: "postinstall", Stopped: true}},
},
"create-image-locality": {
name: "create-image-locality",
CreateImages: &CreateImages{
Images: []*Image{{
Image: compute.Image{Name: "image-from-local-disk", SourceDisk: "local-image", StorageLocations: []string{"europe-west1"}, Description: "Some Ubuntu", Family: "ubuntu-1404"},
ImageBase: ImageBase{OverWrite: false,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: false},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "UBUNTU", "MULTI_IP_SUBNET"},
}},
ImagesAlpha: []*ImageAlpha{{
Image: computeAlpha.Image{Name: "image-from-local-disk", SourceDisk: "local-image", StorageLocations: []string{"europe-west1"}, Description: "Some Ubuntu", Family: "ubuntu-1404"},
ImageBase: ImageBase{OverWrite: false,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: false},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "UBUNTU", "MULTI_IP_SUBNET"},
}},
ImagesBeta: []*ImageBeta{{
Image: computeBeta.Image{Name: "image-from-local-disk", SourceDisk: "local-image", StorageLocations: []string{"europe-west1"}, Description: "Some Ubuntu", Family: "ubuntu-1404"},
ImageBase: ImageBase{OverWrite: false,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: false},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "UBUNTU", "MULTI_IP_SUBNET"},
}},
},
},
"create-image": {
name: "create-image",
CreateImages: &CreateImages{
Images: []*Image{{
Image: compute.Image{Name: "image-from-disk", SourceDisk: "image", Description: "Microsoft, SQL Server 2016 Web, on Windows Server 2019", Family: "sql-web-2016-win-2019"},
ImageBase: ImageBase{OverWrite: true,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: true},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "WINDOWS", "MULTI_IP_SUBNET"},
}},
ImagesAlpha: []*ImageAlpha{{
Image: computeAlpha.Image{Name: "image-from-disk", SourceDisk: "image", Description: "Microsoft, SQL Server 2016 Web, on Windows Server 2019", Family: "sql-web-2016-win-2019"},
ImageBase: ImageBase{OverWrite: true,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: true},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "WINDOWS", "MULTI_IP_SUBNET"},
}},
ImagesBeta: []*ImageBeta{{
Image: computeBeta.Image{Name: "image-from-disk", SourceDisk: "image", Description: "Microsoft, SQL Server 2016 Web, on Windows Server 2019", Family: "sql-web-2016-win-2019"},
ImageBase: ImageBase{OverWrite: true,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: true},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "WINDOWS", "MULTI_IP_SUBNET"},
}},
},
},
"create-image-guest-os-features-compute-api": {
name: "create-image-guest-os-features-compute-api",
CreateImages: &CreateImages{
Images: []*Image{{
Image: compute.Image{Name: "image-from-disk", SourceDisk: "image", Description: "GuestOS Features Compute API", Family: "guest-os"},
ImageBase: ImageBase{OverWrite: true,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: true},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "WINDOWS", "MULTI_IP_SUBNET"},
}},
ImagesAlpha: []*ImageAlpha{{
Image: computeAlpha.Image{Name: "image-from-disk", SourceDisk: "image", Description: "GuestOS Features Compute API", Family: "guest-os"},
ImageBase: ImageBase{OverWrite: true,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: true},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "WINDOWS", "MULTI_IP_SUBNET"},
}},
ImagesBeta: []*ImageBeta{{
Image: computeBeta.Image{Name: "image-from-disk", SourceDisk: "image", Description: "GuestOS Features Compute API", Family: "guest-os"},
ImageBase: ImageBase{OverWrite: true,
Resource: Resource{Project: "a_project", NoCleanup: true, ExactName: true},
},
GuestOsFeatures: []string{"VIRTIO_SCSI_MULTIQUEUE", "WINDOWS", "MULTI_IP_SUBNET"},
}},
},
},
"create-machine-image": {
name: "create-machine-image",
CreateMachineImages: &CreateMachineImages{
{MachineImage: computeBeta.MachineImage{
Name: "machine-image-from-instance",
SourceInstance: "source-instance",
StorageLocations: []string{"eu", "us-west2"},
}},
},
},
"include-workflow": {
name: "include-workflow",
IncludeWorkflow: &IncludeWorkflow{
Vars: map[string]string{
"key": "value",
},
Path: "./test_sub.wf.json",
},
},
"sub-workflow": {
name: "sub-workflow",
SubWorkflow: &SubWorkflow{
Vars: map[string]string{
"key": "value",
},
Path: "./test_sub.wf.json",
},
},
}
want.Dependencies = map[string][]string{
"create-disks": {},
"bootstrap": {"create-disks"},
"bootstrap-stopped": {"bootstrap"},
"postinstall": {"bootstrap-stopped"},
"postinstall-stopped": {"postinstall"},
"create-image-locality": {"postinstall-stopped"},
"create-image": {"create-image-locality"},
"create-machine-image": {"create-image"},
"include-workflow": {"create-image"},
"sub-workflow": {"create-image"},
}
for _, s := range want.Steps {
s.w = want
}
if diffRes := diff(got, want, 0); diffRes != "" {
t.Errorf("parsed workflow does not match expectation: (-got +want)\n%s", diffRes)
}
}
func TestNewStep(t *testing.T) {
w := &Workflow{}
s, err := w.NewStep("s")
wantS := &Step{name: "s", w: w}
if s == nil || s.name != "s" || s.w != w {
t.Errorf("step does not meet expectation: got: %v, want: %v", s, wantS)
}
if err != nil {
t.Error("unexpected error when creating new step")
}
s, err = w.NewStep("s")
if s != nil {
t.Errorf("step should not have been created: %v", s)
}
if err == nil {
t.Error("should have erred, but didn't")
}
}
func TestPopulate(t *testing.T) {
ctx := context.Background()
client, err := newTestGCSClient()
if err != nil {
t.Fatal(err)
}
td, err := ioutil.TempDir(os.TempDir(), "")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)
}
defer os.RemoveAll(td)
tf := filepath.Join(td, "test.cred")
if err := ioutil.WriteFile(tf, []byte(`{ "type": "service_account" }`), 0600); err != nil {
t.Fatalf("error creating temp file: %v", err)
}
called := false
var stepPopErr DError
stepPop := func(ctx context.Context, s *Step) DError {
called = true
return stepPopErr
}
got := New()
got.Name = "${wf_name}"
got.Zone = "wf-zone"
got.Project = "bar-project"
got.OAuthPath = tf
got.Logger = &MockLogger{}
got.Vars = map[string]Var{
"bucket": {Value: "wf-bucket", Required: true},
"step_name": {Value: "step1"},
"timeout": {Value: "60m"},
"path": {Value: "./test_sub.wf.json"},
"wf_name": {Value: "wf-name"},
"test-var": {Value: "${ZONE}-this-should-populate-${NAME}"},
}
got.Steps = map[string]*Step{
"${NAME}-${step_name}": {
w: got,
Timeout: "${timeout}",
testType: &mockStep{
populateImpl: stepPop,
},
},
}
got.StorageClient = client
got.externalLogging = true
if err := got.populate(ctx); err != nil {
t.Fatalf("error populating workflow: %v", err)
}
want := New()
// These are difficult to validate and irrelevant, so we cheat.
want.id = got.id
want.Cancel = got.Cancel
want.cleanupHooks = got.cleanupHooks
want.StorageClient = got.StorageClient
want.cloudLoggingClient = got.cloudLoggingClient
want.Logger = got.Logger
want.disks = newDiskRegistry(want)
want.images = newImageRegistry(want)
want.machineImages = newMachineImageRegistry(want)
want.instances = newInstanceRegistry(want)
want.networks = newNetworkRegistry(want)
want.Name = "wf-name"
want.GCSPath = "gs://bar-project-daisy-bkt"
want.Zone = "wf-zone"
want.Project = "bar-project"
want.OAuthPath = tf
want.externalLogging = true
want.Sources = map[string]string{}
want.DefaultTimeout = defaultTimeout
want.defaultTimeout = 10 * time.Minute
want.Vars = map[string]Var{
"bucket": {Value: "wf-bucket", Required: true},
"step_name": {Value: "step1"},
"timeout": {Value: "60m"},
"path": {Value: "./test_sub.wf.json"},
"wf_name": {Value: "wf-name"},
"test-var": {Value: "wf-zone-this-should-populate-wf-name"},
}
want.autovars = got.autovars
want.bucket = "bar-project-daisy-bkt"
want.scratchPath = got.scratchPath
want.sourcesPath = fmt.Sprintf("%s/sources", got.scratchPath)
want.logsPath = fmt.Sprintf("%s/logs", got.scratchPath)
want.outsPath = fmt.Sprintf("%s/outs", got.scratchPath)
want.username = got.username
want.Steps = map[string]*Step{
"wf-name-step1": {
name: "wf-name-step1",
Timeout: "60m",
timeout: time.Duration(60 * time.Minute),
testType: &mockStep{
populateImpl: stepPop,
},
},
}
want.Dependencies = map[string][]string{}
for _, s := range want.Steps {
s.w = want
}
if diffRes := diff(got, want, 0); diffRes != "" {
t.Errorf("parsed workflow does not match expectation: (-got +want)\n%s", diffRes)
}
if !called {
t.Error("did not call step's populate")
}
stepPopErr = Errf("error")
wantErr := Errf("error populating step \"wf-name-step1\": %v", stepPopErr)
if err := got.populate(ctx); err.Error() != wantErr.Error() {
t.Errorf("did not get proper step populate error: %v != %v", err, wantErr)
}
}
func TestRequiredVars(t *testing.T) {
w := testWorkflow()
tests := []struct {
desc string
vars map[string]Var
shouldErr bool
}{
{"normal case", map[string]Var{"foo": {Value: "foo", Required: true, Description: "foo"}}, false},
{"missing req case", map[string]Var{"foo": {Value: "", Required: true, Description: "foo"}}, true},
}
for _, tt := range tests {
w.Vars = tt.vars
err := w.populate(context.Background())
if tt.shouldErr && err == nil {
t.Errorf("%s: should have erred, but didn't", tt.desc)
} else if !tt.shouldErr && err != nil {
t.Errorf("%s: unexpected error: %v", tt.desc, err)
}
}
}
func testTraverseWorkflow(mockRun func(i int) func(context.Context, *Step) DError) *Workflow {
// s0---->s1---->s3
// \ /
// --->s2---
// s4
w := testWorkflow()
w.Steps = map[string]*Step{
"s0": {name: "s0", testType: &mockStep{runImpl: mockRun(0)}, w: w},
"s1": {name: "s1", testType: &mockStep{runImpl: mockRun(1)}, w: w},
"s2": {name: "s2", testType: &mockStep{runImpl: mockRun(2)}, w: w},
"s3": {name: "s3", testType: &mockStep{runImpl: mockRun(3)}, w: w},
"s4": {name: "s4", testType: &mockStep{runImpl: mockRun(4)}, w: w},
}
w.Dependencies = map[string][]string{
"s1": {"s0"},
"s2": {"s0"},
"s3": {"s1", "s2"},
}
return w
}
func TestTraverseDAG(t *testing.T) {
ctx := context.Background()
var callOrder []int
errs := make([]DError, 5)
var rw sync.Mutex
mockRun := func(i int) func(context.Context, *Step) DError {
return func(_ context.Context, _ *Step) DError {
rw.Lock()
defer rw.Unlock()
callOrder = append(callOrder, i)
return errs[i]
}
}
// Check call order: s1 and s2 must be after s0, s3 must be after s1 and s2.
checkCallOrder := func() error {
rw.Lock()
defer rw.Unlock()
stepOrderNum := []int{-1, -1, -1, -1, -1}
for i, stepNum := range callOrder {
stepOrderNum[stepNum] = i
}
// If s1 was called, check it was called after s0.
if stepOrderNum[1] != -1 && stepOrderNum[1] < stepOrderNum[0] {
return errors.New("s1 was called before s0")
}
// If s2 was called, check it was called after s0.
if stepOrderNum[2] != -1 && stepOrderNum[2] < stepOrderNum[0] {
return errors.New("s2 was called before s0")
}
// If s3 was called, check it was called after s1 and s2.
if stepOrderNum[3] != -1 {
if stepOrderNum[3] < stepOrderNum[1] {
return errors.New("s3 was called before s1")
}
if stepOrderNum[3] < stepOrderNum[2] {
return errors.New("s3 was called before s2")
}
}
return nil
}
// Normal, good run.
w := testTraverseWorkflow(mockRun)
if err := w.Run(ctx); err != nil {
t.Errorf("unexpected error: %s", err)
}
if err := checkCallOrder(); err != nil {
t.Errorf("call order error: %s", err)
}
callOrder = []int{}
errs = make([]DError, 5)
// s2 failure.
w = testTraverseWorkflow(mockRun)
errs[2] = Errf("failure")
want := w.Steps["s2"].wrapRunError(errs[2])
if err := w.Run(ctx); err.Error() != want.Error() {
t.Errorf("unexpected error: %s != %s", err, want)
}
if err := checkCallOrder(); err != nil {
t.Errorf("call order error: %s", err)
}
}
func TestForceCleanupSetOnRunError(t *testing.T) {
doTestForceCleanup(t, true, true, true)
}
func TestForceCleanupNotSetOnRunErrorWhenForceCleanupFalse(t *testing.T) {
doTestForceCleanup(t, true, false, false)
}
func TestForceCleanupNotSetOnNoErrorWhenForceCleanupTrue(t *testing.T) {
doTestForceCleanup(t, false, true, false)
}
func TestForceCleanupNotSetOnNoErrorWhenForceCleanupFalse(t *testing.T) {
doTestForceCleanup(t, false, false, false)
}
func doTestForceCleanup(t *testing.T, runErrorFromStep bool, forceCleanupOnError bool, forceCleanup bool) {
mockRun := func(i int) func(context.Context, *Step) DError {
return func(_ context.Context, _ *Step) DError {
if runErrorFromStep {
return Errf("failure")
}
return nil
}
}
ctx := context.Background()
w := testWorkflow()
w.ForceCleanupOnError = forceCleanupOnError
w.Steps = map[string]*Step{
"s0": {name: "s0", testType: &mockStep{runImpl: mockRun(0)}, w: w},
}
if err := w.Run(ctx); (err != nil) != runErrorFromStep {
if runErrorFromStep {
t.Errorf("expected error from w.Run but nil received")
} else {
t.Errorf("expected no error from w.Run but %v received", err)
}
}
if w.forceCleanup != forceCleanup {
t.Errorf("w.forceCleanup should be set to %v but is %v", forceCleanup, w.forceCleanup)
}
}
func TestPrint(t *testing.T) {
data := []byte(`{
"Name": "some-name",
"Project": "some-project",
"Zone": "some-zone",
"GCSPath": "gs://some-bucket/images",
"Vars": {
"instance_name": "i1",
"machine_type": {"Value": "n1-standard-1", "Required": true}
},
"Steps": {
"${instance_name}Delete": {
"DeleteResources": {
"Instances": ["${instance_name}"]
}
}
}
}`)
want := `{
"Name": "some-name",
"Project": "some-project",
"Zone": "some-zone",
"GCSPath": "gs://some-bucket/images",
"Vars": {
"instance_name": {
"Value": "i1"
},
"machine_type": {
"Value": "n1-standard-1",
"Required": true
}
},
"Steps": {
"i1Delete": {
"Timeout": "10m",
"DeleteResources": {
"Instances": [
"i1"
]
}
}
},
"DefaultTimeout": "10m",
"ForceCleanupOnError": false
}
`
td, err := ioutil.TempDir(os.TempDir(), "")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)
}
defer os.RemoveAll(td)
tf := filepath.Join(td, "test.wf.json")
ioutil.WriteFile(tf, data, 0600)
got, err := NewFromFile(tf)
if err != nil {
t.Fatal(err)
}
got.ComputeClient, _ = newTestGCEClient()
got.StorageClient, _ = newTestGCSClient()
old := os.Stdout
r, w, err := os.Pipe()
if err != nil {
t.Fatal(err)
}
os.Stdout = w
got.Print(context.Background())
w.Close()
os.Stdout = old
var buf bytes.Buffer
if _, err := io.Copy(&buf, r); err != nil {
t.Fatal(err)
}
if diffRes := diff(buf.String(), want, 0); diffRes != "" {
t.Errorf("printed workflow does not match expectation: (-got +want)\n%s", diffRes)
}
}
func testValidateErrors(w *Workflow, want string) error {
if err := w.Validate(context.Background()); err == nil {
return errors.New("expected error, got nil")
} else if err.Error() != want {
return fmt.Errorf("did not get expected error from Validate():\ngot: %q\nwant: %q", err.Error(), want)
}
select {
case <-w.Cancel:
return nil
default:
return errors.New("expected cancel to be closed after error")
}
}
func TestValidateErrors(t *testing.T) {
// Error from validateRequiredFields().
w := testWorkflow()
w.Name = "1"
want := "error validating workflow: workflow field 'Name' must start with a letter and only contain letters, numbers, and hyphens"
if err := testValidateErrors(w, want); err != nil {
t.Error(err)
}
// Error from populate().
w = testWorkflow()
w.Steps = map[string]*Step{"s0": {Timeout: "10", testType: &mockStep{}}}
want = "error populating workflow: error populating step \"s0\": time: missing unit in duration \"10\""
if err := testValidateErrors(w, want); err != nil {
t.Error(err)
}
// Error from validate().
w = testWorkflow()
w.Steps = map[string]*Step{"s0": {testType: &mockStep{}}}
w.Project = "foo"
want = "error validating workflow: bad project lookup: \"foo\", error: APIError: bad project"
if err := testValidateErrors(w, want); err != nil {
t.Error(err)
}
}
func TestWrite(t *testing.T) {
var buf bytes.Buffer
testBucket := "bucket"
testObject := "object"
var gotObj string
var gotBkt string
nameRgx := regexp.MustCompile(`"name":"([^"].*)"`)
uploadRgx := regexp.MustCompile(`/b/([^/]+)/o?.*uploadType=multipart.*`)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
u := r.URL.String()
m := r.Method
if match := uploadRgx.FindStringSubmatch(u); m == "POST" && match != nil {
body, _ := ioutil.ReadAll(r.Body)
buf.Write(body)
gotObj = nameRgx.FindStringSubmatch(string(body))[1]
gotBkt = match[1]
fmt.Fprintf(w, `{"kind":"storage#object","bucket":"%s","name":"%s"}`, gotBkt, gotObj)
}
}))
gcsClient, err := storage.NewClient(context.Background(), option.WithEndpoint(ts.URL), option.WithHTTPClient(http.DefaultClient))
if err != nil {
t.Fatal(err)
}
l := GCSLogger{
client: gcsClient,
bucket: testBucket,
object: testObject,
ctx: context.Background(),
}
tests := []struct {
test, want string
}{
{"test log 1\n", "test log 1\n"},
{"test log 2\n", "test log 1\ntest log 2\n"},
}
for _, tt := range tests {
l.Write([]byte(tt.test))
if gotObj != testObject {
t.Errorf("object does not match, want: %q, got: %q", testObject, gotObj)
}
if gotBkt != testBucket {
t.Errorf("bucket does not match, want: %q, got: %q", testBucket, gotBkt)
}
if !strings.Contains(buf.String(), tt.want) {
t.Errorf("expected text did not get sent to GCS, want: %q, got: %q", tt.want, buf.String())
}
if l.buf.String() != tt.want {
t.Errorf("buffer does mot match expectation, want: %q, got: %q", tt.want, l.buf.String())
}
}
}
func TestRunStepTimeout(t *testing.T) {
w := testWorkflow()
s, _ := w.NewStep("test")
s.timeout = 1 * time.Nanosecond
s.testType = &mockStep{runImpl: func(ctx context.Context, s *Step) DError {
time.Sleep(1 * time.Second)
return nil
}}
want := `step "test" did not complete within the specified timeout of 1ns`