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feat: split job steps into its own files/structs (#1004) 

* refactor: split step_context into separate files

This commit moves functions from the step_context.go file into different
files, but does otherwise not change anything.
This is done to make it easier to review the changes made to these
functions in the next commit, where we introduce a step factory to
facilitate better unit testing of steps.

Co-authored-by: Marcus Noll <marcus.noll@new-work.se>
Co-authored-by: Björn Brauer <bjoern.brauer@new-work.se>
Co-authored-by: Robert Kowalski <robert.kowalski@new-work.se>
Co-authored-by: Philipp Hinrichsen <philipp.hinrichsen@new-work.se>
Co-authored-by: Jonas Holland <jonas.holland@new-work.se>

* refactor: introduce step factory and make steps testable

With this commit we're introducing the `stepFactory` and interfaces
and implementations for each different kind of step (run, docker,
local and remote actions).
Separating each step kind into its own interface and implementation
makes it easier to reason about and to change behaviour of the step.

By introducing interfaces we enable better unit testability as now
each step implementation, the step factory and the job executor can
be tested on their own by mocking out parts that are irrelevant.

This commits prepares us for implementing pre/post actions in a
later PR.

Co-authored-by: Marcus Noll <marcus.noll@new-work.se>
Co-authored-by: Björn Brauer <bjoern.brauer@new-work.se>
Co-authored-by: Robert Kowalski <robert.kowalski@new-work.se>
Co-authored-by: Philipp Hinrichsen <philipp.hinrichsen@new-work.se>
Co-authored-by: Jonas Holland <jonas.holland@new-work.se>

* fix: run post steps in reverse order

* test: add missing asserts for mocks

* refactor: use local reference instead of function

This may make code more easy to follow.

* refactor: correct typo in function name

* test: use named structs

* test: only expected valid calls

There are mocks which are only called on certain conditions.

* refactor: use step-model to get step name

Using the step-logger we have to get the logger name from the
step model.

* test: only mock stopContainer if required

Co-authored-by: Björn Brauer <bjoern.brauer@new-work.se>
Co-authored-by: Marcus Noll <marcus.noll@new-work.se>
Co-authored-by: Robert Kowalski <robert.kowalski@new-work.se>
Co-authored-by: Philipp Hinrichsen <philipp.hinrichsen@new-work.se>
Co-authored-by: Jonas Holland <jonas.holland@new-work.se>
Co-authored-by: Casey Lee <cplee@nektos.com>
Co-authored-by: Christopher Homberger <christopher.homberger@web.de>
This commit is contained in:
Markus Wolf 2022-03-22 22:13:00 +01:00 committed by GitHub
parent 5d7027dc3f
commit 2bb3e74616
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
22 changed files with 2245 additions and 1007 deletions
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386
pkg/runner/action.go
View File

@ -1,27 +1,42 @@
package runner
import (
"context"
"embed"
"fmt"
"io"
"io/fs"
"os"
"path"
"path/filepath"
"regexp"
"runtime"
"strings"
"github.com/kballard/go-shellquote"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/model"
log "github.com/sirupsen/logrus"
)
type ActionReader interface {
readAction(step *model.Step, actionDir string, actionPath string, readFile actionyamlReader) (*model.Action, error)
type actionStep interface {
step
getActionModel() *model.Action
}
type actionyamlReader func(filename string) (io.Reader, io.Closer, error)
type readAction func(step *model.Step, actionDir string, actionPath string, readFile actionYamlReader, writeFile fileWriter) (*model.Action, error)
type actionYamlReader func(filename string) (io.Reader, io.Closer, error)
type fileWriter func(filename string, data []byte, perm fs.FileMode) error
type runAction func(step actionStep, actionDir string, actionPath string, actionRepository string, actionRef string, localAction bool) common.Executor
//go:embed res/trampoline.js
var trampoline embed.FS
func (sc *StepContext) readAction(step *model.Step, actionDir string, actionPath string, readFile actionyamlReader, writeFile fileWriter) (*model.Action, error) {
func readActionImpl(step *model.Step, actionDir string, actionPath string, readFile actionYamlReader, writeFile fileWriter) (*model.Action, error) {
reader, closer, err := readFile("action.yml")
if os.IsNotExist(err) {
reader, closer, err = readFile("action.yaml")
@ -82,3 +97,366 @@ func (sc *StepContext) readAction(step *model.Step, actionDir string, actionPath
log.Debugf("Read action %v from '%s'", action, "Unknown")
return action, err
}
func runActionImpl(step actionStep, actionDir string, actionPath string, actionRepository string, actionRef string, localAction bool) common.Executor {
rc := step.getRunContext()
stepModel := step.getStepModel()
return func(ctx context.Context) error {
// Backup the parent composite action path and restore it on continue
parentActionPath := rc.ActionPath
parentActionRepository := rc.ActionRepository
parentActionRef := rc.ActionRef
defer func() {
rc.ActionPath = parentActionPath
rc.ActionRef = parentActionRef
rc.ActionRepository = parentActionRepository
}()
rc.ActionRef = actionRef
rc.ActionRepository = actionRepository
action := step.getActionModel()
log.Debugf("About to run action %v", action)
populateEnvsFromInput(step.getEnv(), action, rc)
actionLocation := ""
if actionPath != "" {
actionLocation = path.Join(actionDir, actionPath)
} else {
actionLocation = actionDir
}
actionName, containerActionDir := getContainerActionPaths(stepModel, actionLocation, rc)
log.Debugf("type=%v actionDir=%s actionPath=%s workdir=%s actionCacheDir=%s actionName=%s containerActionDir=%s", stepModel.Type(), actionDir, actionPath, rc.Config.Workdir, rc.ActionCacheDir(), actionName, containerActionDir)
maybeCopyToActionDir := func() error {
rc.ActionPath = containerActionDir
if stepModel.Type() != model.StepTypeUsesActionRemote {
return nil
}
if err := removeGitIgnore(actionDir); err != nil {
return err
}
var containerActionDirCopy string
containerActionDirCopy = strings.TrimSuffix(containerActionDir, actionPath)
log.Debug(containerActionDirCopy)
if !strings.HasSuffix(containerActionDirCopy, `/`) {
containerActionDirCopy += `/`
}
return rc.JobContainer.CopyDir(containerActionDirCopy, actionDir+"/", rc.Config.UseGitIgnore)(ctx)
}
switch action.Runs.Using {
case model.ActionRunsUsingNode12, model.ActionRunsUsingNode16:
if err := maybeCopyToActionDir(); err != nil {
return err
}
containerArgs := []string{"node", path.Join(containerActionDir, action.Runs.Main)}
log.Debugf("executing remote job container: %s", containerArgs)
return rc.execJobContainer(containerArgs, *step.getEnv(), "", "")(ctx)
case model.ActionRunsUsingDocker:
return execAsDocker(ctx, action, actionName, containerActionDir, actionLocation, rc, step, localAction)
case model.ActionRunsUsingComposite:
return execAsComposite(ctx, step, actionDir, rc, containerActionDir, actionName, actionPath, action, maybeCopyToActionDir)
default:
return fmt.Errorf(fmt.Sprintf("The runs.using key must be one of: %v, got %s", []string{
model.ActionRunsUsingDocker,
model.ActionRunsUsingNode12,
model.ActionRunsUsingNode16,
model.ActionRunsUsingComposite,
}, action.Runs.Using))
}
}
}
// https://github.com/nektos/act/issues/228#issuecomment-629709055
// files in .gitignore are not copied in a Docker container
// this causes issues with actions that ignore other important resources
// such as `node_modules` for example
func removeGitIgnore(directory string) error {
gitIgnorePath := path.Join(directory, ".gitignore")
if _, err := os.Stat(gitIgnorePath); err == nil {
// .gitignore exists
log.Debugf("Removing %s before docker cp", gitIgnorePath)
err := os.Remove(gitIgnorePath)
if err != nil {
return err
}
}
return nil
}
// TODO: break out parts of function to reduce complexicity
// nolint:gocyclo
func execAsDocker(ctx context.Context, action *model.Action, actionName string, containerLocation string, actionLocation string, rc *RunContext, step step, localAction bool) error {
var prepImage common.Executor
var image string
if strings.HasPrefix(action.Runs.Image, "docker://") {
image = strings.TrimPrefix(action.Runs.Image, "docker://")
} else {
// "-dockeraction" enshures that "./", "./test " won't get converted to "act-:latest", "act-test-:latest" which are invalid docker image names
image = fmt.Sprintf("%s-dockeraction:%s", regexp.MustCompile("[^a-zA-Z0-9]").ReplaceAllString(actionName, "-"), "latest")
image = fmt.Sprintf("act-%s", strings.TrimLeft(image, "-"))
image = strings.ToLower(image)
basedir := actionLocation
if localAction {
basedir = containerLocation
}
contextDir := filepath.Join(basedir, action.Runs.Main)
anyArchExists, err := container.ImageExistsLocally(ctx, image, "any")
if err != nil {
return err
}
correctArchExists, err := container.ImageExistsLocally(ctx, image, rc.Config.ContainerArchitecture)
if err != nil {
return err
}
if anyArchExists && !correctArchExists {
wasRemoved, err := container.RemoveImage(ctx, image, true, true)
if err != nil {
return err
}
if !wasRemoved {
return fmt.Errorf("failed to remove image '%s'", image)
}
}
if !correctArchExists || rc.Config.ForceRebuild {
log.Debugf("image '%s' for architecture '%s' will be built from context '%s", image, rc.Config.ContainerArchitecture, contextDir)
var actionContainer container.Container
if localAction {
actionContainer = step.getRunContext().JobContainer
}
prepImage = container.NewDockerBuildExecutor(container.NewDockerBuildExecutorInput{
ContextDir: contextDir,
ImageTag: image,
Container: actionContainer,
Platform: rc.Config.ContainerArchitecture,
})
} else {
log.Debugf("image '%s' for architecture '%s' already exists", image, rc.Config.ContainerArchitecture)
}
}
eval := step.getRunContext().NewStepExpressionEvaluator(step)
cmd, err := shellquote.Split(eval.Interpolate(step.getStepModel().With["args"]))
if err != nil {
return err
}
if len(cmd) == 0 {
cmd = action.Runs.Args
evalDockerArgs(step, action, &cmd)
}
entrypoint := strings.Fields(eval.Interpolate(step.getStepModel().With["entrypoint"]))
if len(entrypoint) == 0 {
if action.Runs.Entrypoint != "" {
entrypoint, err = shellquote.Split(action.Runs.Entrypoint)
if err != nil {
return err
}
} else {
entrypoint = nil
}
}
stepContainer := newStepContainer(ctx, step, image, cmd, entrypoint)
return common.NewPipelineExecutor(
prepImage,
stepContainer.Pull(rc.Config.ForcePull),
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
stepContainer.Create(rc.Config.ContainerCapAdd, rc.Config.ContainerCapDrop),
stepContainer.Start(true),
).Finally(
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
).Finally(stepContainer.Close())(ctx)
}
func evalDockerArgs(step step, action *model.Action, cmd *[]string) {
rc := step.getRunContext()
stepModel := step.getStepModel()
oldInputs := rc.Inputs
defer func() {
rc.Inputs = oldInputs
}()
inputs := make(map[string]interface{})
eval := rc.NewExpressionEvaluator()
// Set Defaults
for k, input := range action.Inputs {
inputs[k] = eval.Interpolate(input.Default)
}
if stepModel.With != nil {
for k, v := range stepModel.With {
inputs[k] = eval.Interpolate(v)
}
}
rc.Inputs = inputs
stepEE := rc.NewStepExpressionEvaluator(step)
for i, v := range *cmd {
(*cmd)[i] = stepEE.Interpolate(v)
}
mergeIntoMap(step.getEnv(), action.Runs.Env)
ee := rc.NewStepExpressionEvaluator(step)
for k, v := range *step.getEnv() {
(*step.getEnv())[k] = ee.Interpolate(v)
}
}
func newStepContainer(ctx context.Context, step step, image string, cmd []string, entrypoint []string) container.Container {
rc := step.getRunContext()
stepModel := step.getStepModel()
rawLogger := common.Logger(ctx).WithField("raw_output", true)
logWriter := common.NewLineWriter(rc.commandHandler(ctx), func(s string) bool {
if rc.Config.LogOutput {
rawLogger.Infof("%s", s)
} else {
rawLogger.Debugf("%s", s)
}
return true
})
envList := make([]string, 0)
for k, v := range *step.getEnv() {
envList = append(envList, fmt.Sprintf("%s=%s", k, v))
}
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TOOL_CACHE", "/opt/hostedtoolcache"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_OS", "Linux"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TEMP", "/tmp"))
binds, mounts := rc.GetBindsAndMounts()
stepContainer := container.NewContainer(&container.NewContainerInput{
Cmd: cmd,
Entrypoint: entrypoint,
WorkingDir: rc.Config.ContainerWorkdir(),
Image: image,
Username: rc.Config.Secrets["DOCKER_USERNAME"],
Password: rc.Config.Secrets["DOCKER_PASSWORD"],
Name: createContainerName(rc.jobContainerName(), stepModel.ID),
Env: envList,
Mounts: mounts,
NetworkMode: fmt.Sprintf("container:%s", rc.jobContainerName()),
Binds: binds,
Stdout: logWriter,
Stderr: logWriter,
Privileged: rc.Config.Privileged,
UsernsMode: rc.Config.UsernsMode,
Platform: rc.Config.ContainerArchitecture,
})
return stepContainer
}
func execAsComposite(ctx context.Context, step step, _ string, rc *RunContext, containerActionDir string, actionName string, _ string, action *model.Action, maybeCopyToActionDir func() error) error {
err := maybeCopyToActionDir()
if err != nil {
return err
}
// Disable some features of composite actions, only for feature parity with github
for _, compositeStep := range action.Runs.Steps {
if err := compositeStep.Validate(rc.Config.CompositeRestrictions); err != nil {
return err
}
}
inputs := make(map[string]interface{})
eval := step.getRunContext().NewExpressionEvaluator()
// Set Defaults
for k, input := range action.Inputs {
inputs[k] = eval.Interpolate(input.Default)
}
if step.getStepModel().With != nil {
for k, v := range step.getStepModel().With {
inputs[k] = eval.Interpolate(v)
}
}
// Doesn't work with the command processor has a pointer to the original rc
// compositerc := rc.Clone()
// Workaround start
backup := *rc
defer func() { *rc = backup }()
*rc = *rc.Clone()
scriptName := backup.CurrentStep
for rcs := &backup; rcs.Parent != nil; rcs = rcs.Parent {
scriptName = fmt.Sprintf("%s-composite-%s", rcs.Parent.CurrentStep, scriptName)
}
compositerc := rc
compositerc.Parent = &RunContext{
CurrentStep: scriptName,
}
// Workaround end
compositerc.Composite = action
envToEvaluate := mergeMaps(compositerc.Env, step.getStepModel().Environment())
compositerc.Env = make(map[string]string)
// origEnvMap: is used to pass env changes back to parent runcontext
origEnvMap := make(map[string]string)
for k, v := range envToEvaluate {
ev := eval.Interpolate(v)
origEnvMap[k] = ev
compositerc.Env[k] = ev
}
compositerc.Inputs = inputs
compositerc.ExprEval = compositerc.NewExpressionEvaluator()
err = compositerc.CompositeExecutor()(ctx)
// Map outputs to parent rc
eval = compositerc.NewStepExpressionEvaluator(step)
for outputName, output := range action.Outputs {
backup.setOutput(ctx, map[string]string{
"name": outputName,
}, eval.Interpolate(output.Value))
}
backup.Masks = append(backup.Masks, compositerc.Masks...)
// Test if evaluated parent env was altered by this composite step
// Known Issues:
// - you try to set an env variable to the same value as a scoped step env, will be discared
for k, v := range compositerc.Env {
if ov, ok := origEnvMap[k]; !ok || ov != v {
backup.Env[k] = v
}
}
return err
}
func populateEnvsFromInput(env *map[string]string, action *model.Action, rc *RunContext) {
for inputID, input := range action.Inputs {
envKey := regexp.MustCompile("[^A-Z0-9-]").ReplaceAllString(strings.ToUpper(inputID), "_")
envKey = fmt.Sprintf("INPUT_%s", envKey)
if _, ok := (*env)[envKey]; !ok {
(*env)[envKey] = rc.ExprEval.Interpolate(input.Default)
}
}
}
func getContainerActionPaths(step *model.Step, actionDir string, rc *RunContext) (string, string) {
actionName := ""
containerActionDir := "."
if step.Type() != model.StepTypeUsesActionRemote {
actionName = getOsSafeRelativePath(actionDir, rc.Config.Workdir)
containerActionDir = rc.Config.ContainerWorkdir() + "/" + actionName
actionName = "./" + actionName
} else if step.Type() == model.StepTypeUsesActionRemote {
actionName = getOsSafeRelativePath(actionDir, rc.ActionCacheDir())
containerActionDir = ActPath + "/actions/" + actionName
}
if actionName == "" {
actionName = filepath.Base(actionDir)
if runtime.GOOS == "windows" {
actionName = strings.ReplaceAll(actionName, "\\", "/")
}
}
return actionName, containerActionDir
}
func getOsSafeRelativePath(s, prefix string) string {
actionName := strings.TrimPrefix(s, prefix)
if runtime.GOOS == "windows" {
actionName = strings.ReplaceAll(actionName, "\\", "/")
}
actionName = strings.TrimPrefix(actionName, "/")
return actionName
}

84
pkg/runner/action_test.go
View File

@ -1,6 +1,7 @@
package runner
import (
"context"
"io"
"io/fs"
"strings"
@ -121,13 +122,92 @@ runs:
return nil
}
if tt.filename != "" {
closerMock.On("Close")
}
sc := &StepContext{}
action, err := sc.readAction(tt.step, "actionDir", "actionPath", readFile, writeFile)
action, err := readActionImpl(tt.step, "actionDir", "actionPath", readFile, writeFile)
assert.Nil(t, err)
assert.Equal(t, tt.expected, action)
closerMock.AssertExpectations(t)
})
}
}
type exprEvalMock struct {
ExpressionEvaluator
mock.Mock
}
func (e *exprEvalMock) Interpolate(expr string) string {
args := e.Called(expr)
return args.String(0)
}
func TestActionRunner(t *testing.T) {
table := []struct {
name string
step actionStep
}{
{
name: "Test",
step: &stepActionRemote{
Step: &model.Step{
Uses: "repo@ref",
},
RunContext: &RunContext{
ActionRepository: "repo",
ActionPath: "path",
ActionRef: "ref",
Config: &Config{},
Run: &model.Run{
JobID: "job",
Workflow: &model.Workflow{
Jobs: map[string]*model.Job{
"job": {
Name: "job",
},
},
},
},
},
action: &model.Action{
Inputs: map[string]model.Input{
"key": {
Default: "default value",
},
},
Runs: model.ActionRuns{
Using: "node16",
},
},
env: map[string]string{},
},
},
}
for _, tt := range table {
t.Run(tt.name, func(t *testing.T) {
ctx := context.Background()
cm := &containerMock{}
cm.On("CopyDir", "/var/run/act/actions/dir/", "dir/", false).Return(func(ctx context.Context) error { return nil })
cm.On("Exec", []string{"node", "/var/run/act/actions/dir/path"}, map[string]string{"INPUT_KEY": "default value"}, "", "").Return(func(ctx context.Context) error { return nil })
tt.step.getRunContext().JobContainer = cm
ee := &exprEvalMock{}
ee.On("Interpolate", "default value").Return("default value")
tt.step.getRunContext().ExprEval = ee
_, localAction := tt.step.(*stepActionRemote)
err := runActionImpl(tt.step, "dir", "path", "repo", "ref", localAction)(ctx)
assert.Nil(t, err)
ee.AssertExpectations(t)
cm.AssertExpectations(t)
})
}
}

68
pkg/runner/container_mock_test.go Normal file
View File

@ -0,0 +1,68 @@
package runner
import (
"context"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/container"
"github.com/stretchr/testify/mock"
)
type containerMock struct {
mock.Mock
container.Container
}
func (cm *containerMock) Create(capAdd []string, capDrop []string) common.Executor {
args := cm.Called(capAdd, capDrop)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) Pull(forcePull bool) common.Executor {
args := cm.Called(forcePull)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) Start(attach bool) common.Executor {
args := cm.Called(attach)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) Remove() common.Executor {
args := cm.Called()
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) Close() common.Executor {
args := cm.Called()
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) UpdateFromEnv(srcPath string, env *map[string]string) common.Executor {
args := cm.Called(srcPath, env)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) UpdateFromImageEnv(env *map[string]string) common.Executor {
args := cm.Called(env)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) UpdateFromPath(env *map[string]string) common.Executor {
args := cm.Called(env)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) Copy(destPath string, files ...*container.FileEntry) common.Executor {
args := cm.Called(destPath, files)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) CopyDir(destPath string, srcPath string, useGitIgnore bool) common.Executor {
args := cm.Called(destPath, srcPath, useGitIgnore)
return args.Get(0).(func(context.Context) error)
}
func (cm *containerMock) Exec(command []string, env map[string]string, user, workdir string) common.Executor {
args := cm.Called(command, env, user, workdir)
return args.Get(0).(func(context.Context) error)
}

5
pkg/runner/expression.go
View File

@ -70,8 +70,7 @@ func (rc *RunContext) NewExpressionEvaluator() ExpressionEvaluator {
}
// NewExpressionEvaluator creates a new evaluator
func (sc *StepContext) NewExpressionEvaluator() ExpressionEvaluator {
rc := sc.RunContext
func (rc *RunContext) NewStepExpressionEvaluator(step step) ExpressionEvaluator {
// todo: cleanup EvaluationEnvironment creation
job := rc.Run.Job()
strategy := make(map[string]interface{})
@ -97,7 +96,7 @@ func (sc *StepContext) NewExpressionEvaluator() ExpressionEvaluator {
ee := &exprparser.EvaluationEnvironment{
Github: rc.getGithubContext(),
Env: rc.GetEnv(),
Env: *step.getEnv(),
Job: rc.getJobContext(),
Steps: rc.getStepsContext(),
Runner: map[string]interface{}{

8
pkg/runner/expression_test.go
View File

@ -147,13 +147,13 @@ func TestEvaluateRunContext(t *testing.T) {
}
}
func TestEvaluateStepContext(t *testing.T) {
func TestEvaluateStep(t *testing.T) {
rc := createRunContext(t)
sc := &StepContext{
step := &stepRun{
RunContext: rc,
}
ee := sc.NewExpressionEvaluator()
ee := rc.NewStepExpressionEvaluator(step)
tables := []struct {
in string

43
pkg/runner/job_executor.go
View File

@ -14,13 +14,14 @@ type jobInfo interface {
startContainer() common.Executor
stopContainer() common.Executor
closeContainer() common.Executor
newStepExecutor(step *model.Step) common.Executor
interpolateOutputs() common.Executor
result(result string)
}
func newJobExecutor(info jobInfo) common.Executor {
func newJobExecutor(info jobInfo, sf stepFactory, rc *RunContext) common.Executor {
steps := make([]common.Executor, 0)
preSteps := make([]common.Executor, 0)
postSteps := make([]common.Executor, 0)
steps = append(steps, func(ctx context.Context) error {
if len(info.matrix()) > 0 {
@ -29,15 +30,30 @@ func newJobExecutor(info jobInfo) common.Executor {
return nil
})
steps = append(steps, info.startContainer())
infoSteps := info.steps()
for i, step := range info.steps() {
if step.ID == "" {
step.ID = fmt.Sprintf("%d", i)
if len(infoSteps) == 0 {
return common.NewDebugExecutor("No steps found")
}
stepExec := info.newStepExecutor(step)
preSteps = append(preSteps, info.startContainer())
for i, stepModel := range infoSteps {
if stepModel.ID == "" {
stepModel.ID = fmt.Sprintf("%d", i)
}
step, err := sf.newStep(stepModel, rc)
if err != nil {
return common.NewErrorExecutor(err)
}
preSteps = append(preSteps, step.pre())
stepExec := step.main()
steps = append(steps, func(ctx context.Context) error {
stepName := step.String()
stepName := stepModel.String()
return (func(ctx context.Context) error {
err := stepExec(ctx)
if err != nil {
@ -50,9 +66,11 @@ func newJobExecutor(info jobInfo) common.Executor {
return nil
})(withStepLogger(ctx, stepName))
})
postSteps = append([]common.Executor{step.post()}, postSteps...)
}
steps = append(steps, func(ctx context.Context) error {
postSteps = append(postSteps, func(ctx context.Context) error {
jobError := common.JobError(ctx)
if jobError != nil {
info.result("failure")
@ -67,5 +85,10 @@ func newJobExecutor(info jobInfo) common.Executor {
return nil
})
return common.NewPipelineExecutor(steps...).Finally(info.interpolateOutputs()).Finally(info.closeContainer())
pipeline := make([]common.Executor, 0)
pipeline = append(pipeline, preSteps...)
pipeline = append(pipeline, steps...)
pipeline = append(pipeline, postSteps...)
return common.NewPipelineExecutor(pipeline...).Finally(info.interpolateOutputs()).Finally(info.closeContainer())
}

212
pkg/runner/job_executor_test.go
View File

@ -11,59 +11,85 @@ import (
"github.com/stretchr/testify/mock"
)
func TestJobExecutor(t *testing.T) {
platforms := map[string]string{
"ubuntu-latest": baseImage,
}
tables := []TestJobFileInfo{
{"testdata", "uses-and-run-in-one-step", "push", "Invalid run/uses syntax for job:test step:Test", platforms, ""},
{"testdata", "uses-github-empty", "push", "Expected format {org}/{repo}[/path]@ref", platforms, ""},
{"testdata", "uses-github-noref", "push", "Expected format {org}/{repo}[/path]@ref", platforms, ""},
{"testdata", "uses-github-root", "push", "", platforms, ""},
{"testdata", "uses-github-path", "push", "", platforms, ""},
{"testdata", "uses-docker-url", "push", "", platforms, ""},
{"testdata", "uses-github-full-sha", "push", "", platforms, ""},
{"testdata", "uses-github-short-sha", "push", "Unable to resolve action `actions/hello-world-docker-action@b136eb8`, the provided ref `b136eb8` is the shortened version of a commit SHA, which is not supported. Please use the full commit SHA `b136eb8894c5cb1dd5807da824be97ccdf9b5423` instead", platforms, ""},
}
// These tests are sufficient to only check syntax.
ctx := common.WithDryrun(context.Background(), true)
for _, table := range tables {
runTestJobFile(ctx, t, table)
}
}
type jobInfoMock struct {
mock.Mock
}
func (jpm *jobInfoMock) matrix() map[string]interface{} {
args := jpm.Called()
func (jim *jobInfoMock) matrix() map[string]interface{} {
args := jim.Called()
return args.Get(0).(map[string]interface{})
}
func (jpm *jobInfoMock) steps() []*model.Step {
args := jpm.Called()
func (jim *jobInfoMock) steps() []*model.Step {
args := jim.Called()
return args.Get(0).([]*model.Step)
}
func (jpm *jobInfoMock) startContainer() common.Executor {
args := jpm.Called()
func (jim *jobInfoMock) startContainer() common.Executor {
args := jim.Called()
return args.Get(0).(func(context.Context) error)
}
func (jpm *jobInfoMock) stopContainer() common.Executor {
args := jpm.Called()
func (jim *jobInfoMock) stopContainer() common.Executor {
args := jim.Called()
return args.Get(0).(func(context.Context) error)
}
func (jpm *jobInfoMock) closeContainer() common.Executor {
args := jpm.Called()
func (jim *jobInfoMock) closeContainer() common.Executor {
args := jim.Called()
return args.Get(0).(func(context.Context) error)
}
func (jpm *jobInfoMock) newStepExecutor(step *model.Step) common.Executor {
args := jpm.Called(step)
func (jim *jobInfoMock) interpolateOutputs() common.Executor {
args := jim.Called()
return args.Get(0).(func(context.Context) error)
}
func (jpm *jobInfoMock) interpolateOutputs() common.Executor {
args := jpm.Called()
return args.Get(0).(func(context.Context) error)
func (jim *jobInfoMock) result(result string) {
jim.Called(result)
}
func (jpm *jobInfoMock) result(result string) {
jpm.Called(result)
type stepFactoryMock struct {
mock.Mock
}
func (sfm *stepFactoryMock) newStep(model *model.Step, rc *RunContext) (step, error) {
args := sfm.Called(model, rc)
return args.Get(0).(step), args.Error(1)
}
func TestNewJobExecutor(t *testing.T) {
table := []struct {
name string
steps []*model.Step
preSteps []bool
postSteps []bool
executedSteps []string
result string
hasError bool
@ -71,12 +97,9 @@ func TestNewJobExecutor(t *testing.T) {
{
name: "zeroSteps",
steps: []*model.Step{},
executedSteps: []string{
"startContainer",
"stopContainer",
"interpolateOutputs",
"closeContainer",
},
preSteps: []bool{},
postSteps: []bool{},
executedSteps: []string{},
result: "success",
hasError: false,
},
@ -85,6 +108,8 @@ func TestNewJobExecutor(t *testing.T) {
steps: []*model.Step{{
ID: "1",
}},
preSteps: []bool{false},
postSteps: []bool{false},
executedSteps: []string{
"startContainer",
"step1",
@ -100,6 +125,8 @@ func TestNewJobExecutor(t *testing.T) {
steps: []*model.Step{{
ID: "1",
}},
preSteps: []bool{false},
postSteps: []bool{false},
executedSteps: []string{
"startContainer",
"step1",
@ -110,16 +137,80 @@ func TestNewJobExecutor(t *testing.T) {
hasError: true,
},
{
name: "multipleSteps",
name: "stepWithPre",
steps: []*model.Step{{
ID: "1",
}},
preSteps: []bool{true},
postSteps: []bool{false},
executedSteps: []string{
"startContainer",
"pre1",
"step1",
"stopContainer",
"interpolateOutputs",
"closeContainer",
},
result: "success",
hasError: false,
},
{
name: "stepWithPost",
steps: []*model.Step{{
ID: "1",
}},
preSteps: []bool{false},
postSteps: []bool{true},
executedSteps: []string{
"startContainer",
"step1",
"post1",
"stopContainer",
"interpolateOutputs",
"closeContainer",
},
result: "success",
hasError: false,
},
{
name: "stepWithPreAndPost",
steps: []*model.Step{{
ID: "1",
}},
preSteps: []bool{true},
postSteps: []bool{true},
executedSteps: []string{
"startContainer",
"pre1",
"step1",
"post1",
"stopContainer",
"interpolateOutputs",
"closeContainer",
},
result: "success",
hasError: false,
},
{
name: "stepsWithPreAndPost",
steps: []*model.Step{{
ID: "1",
}, {
ID: "2",
}, {
ID: "3",
}},
preSteps: []bool{true, false, true},
postSteps: []bool{false, true, true},
executedSteps: []string{
"startContainer",
"pre1",
"pre3",
"step1",
"step2",
"step3",
"post3",
"post2",
"stopContainer",
"interpolateOutputs",
"closeContainer",
@ -129,54 +220,95 @@ func TestNewJobExecutor(t *testing.T) {
},
}
contains := func(needle string, haystack []string) bool {
for _, item := range haystack {
if item == needle {
return true
}
}
return false
}
for _, tt := range table {
t.Run(tt.name, func(t *testing.T) {
ctx := common.WithJobErrorContainer(context.Background())
jpm := &jobInfoMock{}
jim := &jobInfoMock{}
sfm := &stepFactoryMock{}
rc := &RunContext{}
executorOrder := make([]string, 0)
jpm.On("startContainer").Return(func(ctx context.Context) error {
jim.On("steps").Return(tt.steps)
if len(tt.steps) > 0 {
jim.On("startContainer").Return(func(ctx context.Context) error {
executorOrder = append(executorOrder, "startContainer")
return nil
})
}
jpm.On("steps").Return(tt.steps)
for i, stepModel := range tt.steps {
i := i
stepModel := stepModel
for _, stepMock := range tt.steps {
func(stepMock *model.Step) {
jpm.On("newStepExecutor", stepMock).Return(func(ctx context.Context) error {
executorOrder = append(executorOrder, "step"+stepMock.ID)
sm := &stepMock{}
sfm.On("newStep", stepModel, rc).Return(sm, nil)
sm.On("pre").Return(func(ctx context.Context) error {
if tt.preSteps[i] {
executorOrder = append(executorOrder, "pre"+stepModel.ID)
}
return nil
})
sm.On("main").Return(func(ctx context.Context) error {
executorOrder = append(executorOrder, "step"+stepModel.ID)
if tt.hasError {
return fmt.Errorf("error")
}
return nil
})
}(stepMock)
sm.On("post").Return(func(ctx context.Context) error {
if tt.postSteps[i] {
executorOrder = append(executorOrder, "post"+stepModel.ID)
}
return nil
})
defer sm.AssertExpectations(t)
}
jpm.On("interpolateOutputs").Return(func(ctx context.Context) error {
if len(tt.steps) > 0 {
jim.On("matrix").Return(map[string]interface{}{})
jim.On("interpolateOutputs").Return(func(ctx context.Context) error {
executorOrder = append(executorOrder, "interpolateOutputs")
return nil
})
jpm.On("matrix").Return(map[string]interface{}{})
jpm.On("stopContainer").Return(func(ctx context.Context) error {
if contains("stopContainer", tt.executedSteps) {
jim.On("stopContainer").Return(func(ctx context.Context) error {
executorOrder = append(executorOrder, "stopContainer")
return nil
})
}
jpm.On("result", tt.result)
jim.On("result", tt.result)
jpm.On("closeContainer").Return(func(ctx context.Context) error {
jim.On("closeContainer").Return(func(ctx context.Context) error {
executorOrder = append(executorOrder, "closeContainer")
return nil
})
}
executor := newJobExecutor(jpm)
executor := newJobExecutor(jim, sfm, rc)
err := executor(ctx)
assert.Nil(t, err)
assert.Equal(t, tt.executedSteps, executorOrder)
jim.AssertExpectations(t)
sfm.AssertExpectations(t)
})
}
}

68
pkg/runner/run_context.go
View File

@ -287,7 +287,7 @@ func (rc *RunContext) Executor() common.Executor {
}
if isEnabled {
return newJobExecutor(rc)(ctx)
return newJobExecutor(rc, &stepFactoryImpl{}, rc)(ctx)
}
return nil
@ -298,12 +298,23 @@ func (rc *RunContext) Executor() common.Executor {
func (rc *RunContext) CompositeExecutor() common.Executor {
steps := make([]common.Executor, 0)
sf := &stepFactoryImpl{}
for i, step := range rc.Composite.Runs.Steps {
if step.ID == "" {
step.ID = fmt.Sprintf("%d", i)
}
// create a copy of the step, since this composite action could
// run multiple times and we might modify the instance
stepcopy := step
stepExec := rc.newStepExecutor(&stepcopy)
step, err := sf.newStep(&stepcopy, rc)
if err != nil {
return common.NewErrorExecutor(err)
}
stepExec := common.NewPipelineExecutor(step.pre(), step.main(), step.post())
steps = append(steps, func(ctx context.Context) error {
err := stepExec(ctx)
if err != nil {
@ -323,59 +334,6 @@ func (rc *RunContext) CompositeExecutor() common.Executor {
}
}
func (rc *RunContext) newStepExecutor(step *model.Step) common.Executor {
sc := &StepContext{
RunContext: rc,
Step: step,
}
return func(ctx context.Context) error {
rc.CurrentStep = sc.Step.ID
rc.StepResults[rc.CurrentStep] = &model.StepResult{
Outcome: model.StepStatusSuccess,
Conclusion: model.StepStatusSuccess,
Outputs: make(map[string]string),
}
runStep, err := sc.isEnabled(ctx)
if err != nil {
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusFailure
rc.StepResults[rc.CurrentStep].Outcome = model.StepStatusFailure
return err
}
if !runStep {
log.Debugf("Skipping step '%s' due to '%s'", sc.Step.String(), sc.Step.If.Value)
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusSkipped
rc.StepResults[rc.CurrentStep].Outcome = model.StepStatusSkipped
return nil
}
exprEval, err := sc.setupEnv(ctx)
if err != nil {
return err
}
rc.ExprEval = exprEval
common.Logger(ctx).Infof("\u2B50 Run %s", sc.Step)
err = sc.Executor(ctx)(ctx)
if err == nil {
common.Logger(ctx).Infof(" \u2705 Success - %s", sc.Step)
} else {
common.Logger(ctx).Errorf(" \u274C Failure - %s", sc.Step)
rc.StepResults[rc.CurrentStep].Outcome = model.StepStatusFailure
if sc.Step.ContinueOnError {
common.Logger(ctx).Infof("Failed but continue next step")
err = nil
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusSuccess
} else {
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusFailure
}
}
return err
}
}
func (rc *RunContext) platformImage() string {
job := rc.Run.Job()

145
pkg/runner/step.go Normal file
View File

@ -0,0 +1,145 @@
package runner
import (
"context"
"fmt"
"strings"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
log "github.com/sirupsen/logrus"
)
type step interface {
pre() common.Executor
main() common.Executor
post() common.Executor
getRunContext() *RunContext
getStepModel() *model.Step
getEnv() *map[string]string
}
func runStepExecutor(step step, executor common.Executor) common.Executor {
return func(ctx context.Context) error {
rc := step.getRunContext()
stepModel := step.getStepModel()
rc.CurrentStep = stepModel.ID
rc.StepResults[rc.CurrentStep] = &model.StepResult{
Outcome: model.StepStatusSuccess,
Conclusion: model.StepStatusSuccess,
Outputs: make(map[string]string),
}
err := setupEnv(ctx, step)
if err != nil {
return err
}
runStep, err := isStepEnabled(ctx, step)
if err != nil {
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusFailure
rc.StepResults[rc.CurrentStep].Outcome = model.StepStatusFailure
return err
}
if !runStep {
log.Debugf("Skipping step '%s' due to '%s'", stepModel.String(), stepModel.If.Value)
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusSkipped
rc.StepResults[rc.CurrentStep].Outcome = model.StepStatusSkipped
return nil
}
common.Logger(ctx).Infof("\u2B50 Run %s", stepModel)
err = executor(ctx)
if err == nil {
common.Logger(ctx).Infof(" \u2705 Success - %s", stepModel)
} else {
common.Logger(ctx).Errorf(" \u274C Failure - %s", stepModel)
rc.StepResults[rc.CurrentStep].Outcome = model.StepStatusFailure
if stepModel.ContinueOnError {
common.Logger(ctx).Infof("Failed but continue next step")
err = nil
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusSuccess
} else {
rc.StepResults[rc.CurrentStep].Conclusion = model.StepStatusFailure
}
}
return err
}
}
func setupEnv(ctx context.Context, step step) error {
rc := step.getRunContext()
mergeEnv(step)
err := rc.JobContainer.UpdateFromImageEnv(step.getEnv())(ctx)
if err != nil {
return err
}
err = rc.JobContainer.UpdateFromEnv((*step.getEnv())["GITHUB_ENV"], step.getEnv())(ctx)
if err != nil {
return err
}
err = rc.JobContainer.UpdateFromPath(step.getEnv())(ctx)
if err != nil {
return err
}
mergeIntoMap(step.getEnv(), step.getStepModel().GetEnv()) // step env should not be overwritten
exprEval := rc.NewStepExpressionEvaluator(step)
for k, v := range *step.getEnv() {
(*step.getEnv())[k] = exprEval.Interpolate(v)
}
common.Logger(ctx).Debugf("setupEnv => %v", *step.getEnv())
return nil
}
func mergeEnv(step step) {
env := step.getEnv()
rc := step.getRunContext()
job := rc.Run.Job()
c := job.Container()
if c != nil {
mergeIntoMap(env, rc.GetEnv(), c.Env)
} else {
mergeIntoMap(env, rc.GetEnv())
}
if (*env)["PATH"] == "" {
(*env)["PATH"] = `/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin`
}
if rc.ExtraPath != nil && len(rc.ExtraPath) > 0 {
p := (*env)["PATH"]
(*env)["PATH"] = strings.Join(rc.ExtraPath, `:`)
(*env)["PATH"] += `:` + p
}
mergeIntoMap(env, rc.withGithubEnv(*env))
}
func isStepEnabled(ctx context.Context, step step) (bool, error) {
rc := step.getRunContext()
runStep, err := EvalBool(rc.NewStepExpressionEvaluator(step), step.getStepModel().If.Value)
if err != nil {
return false, fmt.Errorf(" \u274C Error in if-expression: \"if: %s\" (%s)", step.getStepModel().If.Value, err)
}
return runStep, nil
}
func mergeIntoMap(target *map[string]string, maps ...map[string]string) {
for _, m := range maps {
for k, v := range m {
(*target)[k] = v
}
}
}

85
pkg/runner/step_action_local.go Normal file
View File

@ -0,0 +1,85 @@
package runner
import (
"archive/tar"
"context"
"io"
"io/ioutil"
"os"
"path"
"path/filepath"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
log "github.com/sirupsen/logrus"
)
type stepActionLocal struct {
Step *model.Step
RunContext *RunContext
runAction runAction
readAction readAction
env map[string]string
action *model.Action
}
func (sal *stepActionLocal) pre() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sal *stepActionLocal) main() common.Executor {
sal.env = map[string]string{}
return runStepExecutor(sal, func(ctx context.Context) error {
actionDir := filepath.Join(sal.getRunContext().Config.Workdir, sal.Step.Uses)
localReader := func(ctx context.Context) actionYamlReader {
_, cpath := getContainerActionPaths(sal.Step, path.Join(actionDir, ""), sal.RunContext)
return func(filename string) (io.Reader, io.Closer, error) {
tars, err := sal.RunContext.JobContainer.GetContainerArchive(ctx, path.Join(cpath, filename))
if err != nil {
return nil, nil, os.ErrNotExist
}
treader := tar.NewReader(tars)
if _, err := treader.Next(); err != nil {
return nil, nil, os.ErrNotExist
}
return treader, tars, nil
}
}
actionModel, err := sal.readAction(sal.Step, actionDir, "", localReader(ctx), ioutil.WriteFile)
if err != nil {
return err
}
sal.action = actionModel
log.Debugf("Read action %v from '%s'", sal.action, "Unknown")
return sal.runAction(sal, actionDir, "", "", "", true)(ctx)
})
}
func (sal *stepActionLocal) post() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sal *stepActionLocal) getRunContext() *RunContext {
return sal.RunContext
}
func (sal *stepActionLocal) getStepModel() *model.Step {
return sal.Step
}
func (sal *stepActionLocal) getEnv() *map[string]string {
return &sal.env
}
func (sal *stepActionLocal) getActionModel() *model.Action {
return sal.action
}

101
pkg/runner/step_action_local_test.go Normal file
View File

@ -0,0 +1,101 @@
package runner
import (
"context"
"testing"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
type stepActionLocalMocks struct {
mock.Mock
}
func (salm *stepActionLocalMocks) runAction(step actionStep, actionDir string, actionPath string, actionRepository string, actionRef string, localAction bool) common.Executor {
args := salm.Called(step, actionDir, actionPath, actionRepository, actionRef, localAction)
return args.Get(0).(func(context.Context) error)
}
func (salm *stepActionLocalMocks) readAction(step *model.Step, actionDir string, actionPath string, readFile actionYamlReader, writeFile fileWriter) (*model.Action, error) {
args := salm.Called(step, actionDir, actionPath, readFile, writeFile)
return args.Get(0).(*model.Action), args.Error(1)
}
func TestStepActionLocalTest(t *testing.T) {
ctx := context.Background()
cm := &containerMock{}
salm := &stepActionLocalMocks{}
sal := &stepActionLocal{
readAction: salm.readAction,
runAction: salm.runAction,
RunContext: &RunContext{
StepResults: map[string]*model.StepResult{},
ExprEval: &expressionEvaluator{},
Config: &Config{
Workdir: "/tmp",
},
Run: &model.Run{
JobID: "1",
Workflow: &model.Workflow{
Jobs: map[string]*model.Job{
"1": {
Defaults: model.Defaults{
Run: model.RunDefaults{
Shell: "bash",
},
},
},
},
},
},
JobContainer: cm,
},
Step: &model.Step{
ID: "1",
Uses: "./path/to/action",
},
}
salm.On("readAction", sal.Step, "/tmp/path/to/action", "", mock.Anything, mock.Anything).
Return(&model.Action{}, nil)
cm.On("UpdateFromImageEnv", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromEnv", "/var/run/act/workflow/envs.txt", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromPath", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
salm.On("runAction", sal, "/tmp/path/to/action", "", "", "", true).Return(func(ctx context.Context) error {
return nil
})
err := sal.main()(ctx)
assert.Nil(t, err)
cm.AssertExpectations(t)
salm.AssertExpectations(t)
}
func TestStepActionLocalPrePost(t *testing.T) {
ctx := context.Background()
sal := &stepActionLocal{}
err := sal.pre()(ctx)
assert.Nil(t, err)
err = sal.post()(ctx)
assert.Nil(t, err)
}

153
pkg/runner/step_action_remote.go Normal file
View File

@ -0,0 +1,153 @@
package runner
import (
"context"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"strings"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
)
type stepActionRemote struct {
Step *model.Step
RunContext *RunContext
readAction readAction
runAction runAction
action *model.Action
env map[string]string
}
func (sar *stepActionRemote) pre() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
var (
stepActionRemoteNewCloneExecutor = common.NewGitCloneExecutor
)
func (sar *stepActionRemote) main() common.Executor {
sar.env = map[string]string{}
return runStepExecutor(sar, func(ctx context.Context) error {
remoteAction := newRemoteAction(sar.Step.Uses)
if remoteAction == nil {
return fmt.Errorf("Expected format {org}/{repo}[/path]@ref. Actual '%s' Input string was not in a correct format", sar.Step.Uses)
}
remoteAction.URL = sar.RunContext.Config.GitHubInstance
github := sar.RunContext.getGithubContext()
if remoteAction.IsCheckout() && isLocalCheckout(github, sar.Step) && !sar.RunContext.Config.NoSkipCheckout {
common.Logger(ctx).Debugf("Skipping local actions/checkout because workdir was already copied")
return nil
}
actionDir := fmt.Sprintf("%s/%s", sar.RunContext.ActionCacheDir(), strings.ReplaceAll(sar.Step.Uses, "/", "-"))
gitClone := stepActionRemoteNewCloneExecutor(common.NewGitCloneExecutorInput{
URL: remoteAction.CloneURL(),
Ref: remoteAction.Ref,
Dir: actionDir,
Token: github.Token,
})
var ntErr common.Executor
if err := gitClone(ctx); err != nil {
if err.Error() == "short SHA references are not supported" {
err = errors.Cause(err)
return fmt.Errorf("Unable to resolve action `%s`, the provided ref `%s` is the shortened version of a commit SHA, which is not supported. Please use the full commit SHA `%s` instead", sar.Step.Uses, remoteAction.Ref, err.Error())
} else if err.Error() != "some refs were not updated" {
return err
} else {
ntErr = common.NewInfoExecutor("Non-terminating error while running 'git clone': %v", err)
}
}
remoteReader := func(ctx context.Context) actionYamlReader {
return func(filename string) (io.Reader, io.Closer, error) {
f, err := os.Open(filepath.Join(actionDir, remoteAction.Path, filename))
return f, f, err
}
}
return common.NewPipelineExecutor(
ntErr,
func(ctx context.Context) error {
actionModel, err := sar.readAction(sar.Step, actionDir, remoteAction.Path, remoteReader(ctx), ioutil.WriteFile)
sar.action = actionModel
log.Debugf("Read action %v from '%s'", sar.action, "Unknown")
return err
},
sar.runAction(sar, actionDir, remoteAction.Path, remoteAction.Repo, remoteAction.Ref, false),
)(ctx)
})
}
func (sar *stepActionRemote) post() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sar *stepActionRemote) getRunContext() *RunContext {
return sar.RunContext
}
func (sar *stepActionRemote) getStepModel() *model.Step {
return sar.Step
}
func (sar *stepActionRemote) getEnv() *map[string]string {
return &sar.env
}
func (sar *stepActionRemote) getActionModel() *model.Action {
return sar.action
}
type remoteAction struct {
URL string
Org string
Repo string
Path string
Ref string
}
func (ra *remoteAction) CloneURL() string {
return fmt.Sprintf("https://%s/%s/%s", ra.URL, ra.Org, ra.Repo)
}
func (ra *remoteAction) IsCheckout() bool {
if ra.Org == "actions" && ra.Repo == "checkout" {
return true
}
return false
}
func newRemoteAction(action string) *remoteAction {
// GitHub's document[^] describes:
// > We strongly recommend that you include the version of
// > the action you are using by specifying a Git ref, SHA, or Docker tag number.
// Actually, the workflow stops if there is the uses directive that hasn't @ref.
// [^]: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions
r := regexp.MustCompile(`^([^/@]+)/([^/@]+)(/([^@]*))?(@(.*))?$`)
matches := r.FindStringSubmatch(action)
if len(matches) < 7 || matches[6] == "" {
return nil
}
return &remoteAction{
Org: matches[1],
Repo: matches[2],
Path: matches[4],
Ref: matches[6],
URL: "github.com",
}
}

102
pkg/runner/step_action_remote_test.go Normal file
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@ -0,0 +1,102 @@
package runner
import (
"context"
"strings"
"testing"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
type stepActionRemoteMocks struct {
mock.Mock
}
func (sarm *stepActionRemoteMocks) readAction(step *model.Step, actionDir string, actionPath string, readFile actionYamlReader, writeFile fileWriter) (*model.Action, error) {
args := sarm.Called(step, actionDir, actionPath, readFile, writeFile)
return args.Get(0).(*model.Action), args.Error(1)
}
func (sarm *stepActionRemoteMocks) runAction(step actionStep, actionDir string, actionPath string, actionRepository string, actionRef string, localAction bool) common.Executor {
args := sarm.Called(step, actionDir, actionPath, actionRepository, actionRef, localAction)
return args.Get(0).(func(context.Context) error)
}
func TestStepActionRemoteTest(t *testing.T) {
ctx := context.Background()
cm := &containerMock{}
sarm := &stepActionRemoteMocks{}
clonedAction := false
origStepAtionRemoteNewCloneExecutor := stepActionRemoteNewCloneExecutor
stepActionRemoteNewCloneExecutor = func(input common.NewGitCloneExecutorInput) common.Executor {
return func(ctx context.Context) error {
clonedAction = true
return nil
}
}
defer (func() {
stepActionRemoteNewCloneExecutor = origStepAtionRemoteNewCloneExecutor
})()
sar := &stepActionRemote{
RunContext: &RunContext{
Config: &Config{
GitHubInstance: "https://github.com",
},
Run: &model.Run{
JobID: "1",
Workflow: &model.Workflow{
Jobs: map[string]*model.Job{
"1": {},
},
},
},
StepResults: map[string]*model.StepResult{},
JobContainer: cm,
},
Step: &model.Step{
Uses: "remote/action@v1",
},
readAction: sarm.readAction,
runAction: sarm.runAction,
}
suffixMatcher := func(suffix string) interface{} {
return mock.MatchedBy(func(actionDir string) bool {
return strings.HasSuffix(actionDir, suffix)
})
}
cm.On("UpdateFromImageEnv", &sar.env).Return(func(ctx context.Context) error { return nil })
cm.On("UpdateFromEnv", "/var/run/act/workflow/envs.txt", &sar.env).Return(func(ctx context.Context) error { return nil })
cm.On("UpdateFromPath", &sar.env).Return(func(ctx context.Context) error { return nil })
sarm.On("readAction", sar.Step, suffixMatcher("act/remote-action@v1"), "", mock.Anything, mock.Anything).Return(&model.Action{}, nil)
sarm.On("runAction", sar, suffixMatcher("act/remote-action@v1"), "", "action", "v1", false).Return(func(ctx context.Context) error { return nil })
err := sar.main()(ctx)
assert.Nil(t, err)
assert.True(t, clonedAction)
sarm.AssertExpectations(t)
cm.AssertExpectations(t)
}
func TestStepActionRemotePrePost(t *testing.T) {
ctx := context.Background()
sar := &stepActionRemote{}
err := sar.pre()(ctx)
assert.Nil(t, err)
err = sar.post()(ctx)
assert.Nil(t, err)
}

751
pkg/runner/step_context.go
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@ -1,751 +0,0 @@
package runner
import (
"archive/tar"
"context"
"fmt"
"io"
"io/ioutil"
"os"
"path"
"path/filepath"
"regexp"
"runtime"
"strings"
"github.com/kballard/go-shellquote"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/model"
)
// StepContext contains info about current job
type StepContext struct {
RunContext *RunContext
Step *model.Step
Env map[string]string
Cmd []string
Action *model.Action
Needs *model.Job
}
func (sc *StepContext) execJobContainer() common.Executor {
return func(ctx context.Context) error {
return sc.RunContext.execJobContainer(sc.Cmd, sc.Env, "", sc.Step.WorkingDirectory)(ctx)
}
}
type formatError string
func (e formatError) Error() string {
return fmt.Sprintf("Expected format {org}/{repo}[/path]@ref. Actual '%s' Input string was not in a correct format.", string(e))
}
// Executor for a step context
func (sc *StepContext) Executor(ctx context.Context) common.Executor {
rc := sc.RunContext
step := sc.Step
switch step.Type() {
case model.StepTypeRun:
return common.NewPipelineExecutor(
sc.setupShellCommandExecutor(),
sc.execJobContainer(),
)
case model.StepTypeUsesDockerURL:
return common.NewPipelineExecutor(
sc.runUsesContainer(),
)
case model.StepTypeUsesActionLocal:
actionDir := filepath.Join(rc.Config.Workdir, step.Uses)
localReader := func(ctx context.Context) actionyamlReader {
_, cpath := sc.getContainerActionPaths(sc.Step, path.Join(actionDir, ""), sc.RunContext)
return func(filename string) (io.Reader, io.Closer, error) {
tars, err := sc.RunContext.JobContainer.GetContainerArchive(ctx, path.Join(cpath, filename))
if err != nil {
return nil, nil, os.ErrNotExist
}
treader := tar.NewReader(tars)
if _, err := treader.Next(); err != nil {
return nil, nil, os.ErrNotExist
}
return treader, tars, nil
}
}
return common.NewPipelineExecutor(
sc.setupAction(actionDir, "", localReader),
sc.runAction(actionDir, "", "", "", true),
)
case model.StepTypeUsesActionRemote:
remoteAction := newRemoteAction(step.Uses)
if remoteAction == nil {
return common.NewErrorExecutor(formatError(step.Uses))
}
remoteAction.URL = rc.Config.GitHubInstance
github := rc.getGithubContext()
if remoteAction.IsCheckout() && isLocalCheckout(github, step) && !rc.Config.NoSkipCheckout {
return func(ctx context.Context) error {
common.Logger(ctx).Debugf("Skipping local actions/checkout because workdir was already copied")
return nil
}
}
actionDir := fmt.Sprintf("%s/%s", rc.ActionCacheDir(), strings.ReplaceAll(step.Uses, "/", "-"))
gitClone := common.NewGitCloneExecutor(common.NewGitCloneExecutorInput{
URL: remoteAction.CloneURL(),
Ref: remoteAction.Ref,
Dir: actionDir,
Token: github.Token,
})
var ntErr common.Executor
if err := gitClone(ctx); err != nil {
if err.Error() == "short SHA references are not supported" {
err = errors.Cause(err)
return common.NewErrorExecutor(fmt.Errorf("Unable to resolve action `%s`, the provided ref `%s` is the shortened version of a commit SHA, which is not supported. Please use the full commit SHA `%s` instead", step.Uses, remoteAction.Ref, err.Error()))
} else if err.Error() != "some refs were not updated" {
return common.NewErrorExecutor(err)
} else {
ntErr = common.NewInfoExecutor("Non-terminating error while running 'git clone': %v", err)
}
}
remoteReader := func(ctx context.Context) actionyamlReader {
return func(filename string) (io.Reader, io.Closer, error) {
f, err := os.Open(filepath.Join(actionDir, remoteAction.Path, filename))
return f, f, err
}
}
return common.NewPipelineExecutor(
ntErr,
sc.setupAction(actionDir, remoteAction.Path, remoteReader),
sc.runAction(actionDir, remoteAction.Path, remoteAction.Repo, remoteAction.Ref, false),
)
case model.StepTypeInvalid:
return common.NewErrorExecutor(fmt.Errorf("Invalid run/uses syntax for job:%s step:%+v", rc.Run, step))
}
return common.NewErrorExecutor(fmt.Errorf("Unable to determine how to run job:%s step:%+v", rc.Run, step))
}
func (sc *StepContext) mergeEnv() map[string]string {
rc := sc.RunContext
job := rc.Run.Job()
var env map[string]string
c := job.Container()
if c != nil {
env = mergeMaps(rc.GetEnv(), c.Env)
} else {
env = rc.GetEnv()
}
if env["PATH"] == "" {
env["PATH"] = `/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin`
}
if rc.ExtraPath != nil && len(rc.ExtraPath) > 0 {
p := env["PATH"]
env["PATH"] = strings.Join(rc.ExtraPath, `:`)
env["PATH"] += `:` + p
}
sc.Env = rc.withGithubEnv(env)
return env
}
func (sc *StepContext) interpolateEnv(exprEval ExpressionEvaluator) {
for k, v := range sc.Env {
sc.Env[k] = exprEval.Interpolate(v)
}
}
func (sc *StepContext) isEnabled(ctx context.Context) (bool, error) {
runStep, err := EvalBool(sc.NewExpressionEvaluator(), sc.Step.If.Value)
if err != nil {
return false, fmt.Errorf(" \u274C Error in if-expression: \"if: %s\" (%s)", sc.Step.If.Value, err)
}
return runStep, nil
}
func (sc *StepContext) setupEnv(ctx context.Context) (ExpressionEvaluator, error) {
rc := sc.RunContext
sc.Env = sc.mergeEnv()
if sc.Env != nil {
err := rc.JobContainer.UpdateFromImageEnv(&sc.Env)(ctx)
if err != nil {
return nil, err
}
err = rc.JobContainer.UpdateFromEnv(sc.Env["GITHUB_ENV"], &sc.Env)(ctx)
if err != nil {
return nil, err
}
err = rc.JobContainer.UpdateFromPath(&sc.Env)(ctx)
if err != nil {
return nil, err
}
}
sc.Env = mergeMaps(sc.Env, sc.Step.GetEnv()) // step env should not be overwritten
evaluator := sc.NewExpressionEvaluator()
sc.interpolateEnv(evaluator)
common.Logger(ctx).Debugf("setupEnv => %v", sc.Env)
return evaluator, nil
}
func (sc *StepContext) setupWorkingDirectory() {
rc := sc.RunContext
step := sc.Step
if step.WorkingDirectory == "" {
step.WorkingDirectory = rc.Run.Job().Defaults.Run.WorkingDirectory
}
// jobs can receive context values, so we interpolate
step.WorkingDirectory = rc.ExprEval.Interpolate(step.WorkingDirectory)
// but top level keys in workflow file like `defaults` or `env` can't
if step.WorkingDirectory == "" {
step.WorkingDirectory = rc.Run.Workflow.Defaults.Run.WorkingDirectory
}
}
func (sc *StepContext) setupShell() {
rc := sc.RunContext
step := sc.Step
if step.Shell == "" {
step.Shell = rc.Run.Job().Defaults.Run.Shell
}
step.Shell = rc.ExprEval.Interpolate(step.Shell)
if step.Shell == "" {
step.Shell = rc.Run.Workflow.Defaults.Run.Shell
}
// current GitHub Runner behaviour is that default is `sh`,
// but if it's not container it validates with `which` command
// if `bash` is available, and provides `bash` if it is
// for now I'm going to leave below logic, will address it in different PR
// https://github.com/actions/runner/blob/9a829995e02d2db64efb939dc2f283002595d4d9/src/Runner.Worker/Handlers/ScriptHandler.cs#L87-L91
if rc.Run.Job().Container() != nil {
if rc.Run.Job().Container().Image != "" && step.Shell == "" {
step.Shell = "sh"
}
}
}
func getScriptName(rc *RunContext, step *model.Step) string {
scriptName := step.ID
for rcs := rc; rcs.Parent != nil; rcs = rcs.Parent {
scriptName = fmt.Sprintf("%s-composite-%s", rcs.Parent.CurrentStep, scriptName)
}
return fmt.Sprintf("workflow/%s", scriptName)
}
// TODO: Currently we just ignore top level keys, BUT we should return proper error on them
// BUTx2 I leave this for when we rewrite act to use actionlint for workflow validation
// so we return proper errors before any execution or spawning containers
// it will error anyway with:
// OCI runtime exec failed: exec failed: container_linux.go:380: starting container process caused: exec: "${{": executable file not found in $PATH: unknown
func (sc *StepContext) setupShellCommand() (name, script string, err error) {
sc.setupShell()
sc.setupWorkingDirectory()
step := sc.Step
script = sc.RunContext.ExprEval.Interpolate(step.Run)
scCmd := step.ShellCommand()
name = getScriptName(sc.RunContext, step)
// Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L47-L64
// Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L19-L27
runPrepend := ""
runAppend := ""
switch step.Shell {
case "bash", "sh":
name += ".sh"
case "pwsh", "powershell":
name += ".ps1"
runPrepend = "$ErrorActionPreference = 'stop'"
runAppend = "if ((Test-Path -LiteralPath variable:/LASTEXITCODE)) { exit $LASTEXITCODE }"
case "cmd":
name += ".cmd"
runPrepend = "@echo off"
case "python":
name += ".py"
}
script = fmt.Sprintf("%s\n%s\n%s", runPrepend, script, runAppend)
log.Debugf("Wrote command \n%s\n to '%s'", script, name)
scriptPath := fmt.Sprintf("%s/%s", ActPath, name)
sc.Cmd, err = shellquote.Split(strings.Replace(scCmd, `{0}`, scriptPath, 1))
return name, script, err
}
func (sc *StepContext) setupShellCommandExecutor() common.Executor {
rc := sc.RunContext
return func(ctx context.Context) error {
scriptName, script, err := sc.setupShellCommand()
if err != nil {
return err
}
return rc.JobContainer.Copy(ActPath, &container.FileEntry{
Name: scriptName,
Mode: 0755,
Body: script,
})(ctx)
}
}
func (sc *StepContext) newStepContainer(ctx context.Context, image string, cmd []string, entrypoint []string) container.Container {
rc := sc.RunContext
step := sc.Step
rawLogger := common.Logger(ctx).WithField("raw_output", true)
logWriter := common.NewLineWriter(rc.commandHandler(ctx), func(s string) bool {
if rc.Config.LogOutput {
rawLogger.Infof("%s", s)
} else {
rawLogger.Debugf("%s", s)
}
return true
})
envList := make([]string, 0)
for k, v := range sc.Env {
envList = append(envList, fmt.Sprintf("%s=%s", k, v))
}
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TOOL_CACHE", "/opt/hostedtoolcache"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_OS", "Linux"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TEMP", "/tmp"))
binds, mounts := rc.GetBindsAndMounts()
stepContainer := container.NewContainer(&container.NewContainerInput{
Cmd: cmd,
Entrypoint: entrypoint,
WorkingDir: rc.Config.ContainerWorkdir(),
Image: image,
Username: rc.Config.Secrets["DOCKER_USERNAME"],
Password: rc.Config.Secrets["DOCKER_PASSWORD"],
Name: createContainerName(rc.jobContainerName(), step.ID),
Env: envList,
Mounts: mounts,
NetworkMode: fmt.Sprintf("container:%s", rc.jobContainerName()),
Binds: binds,
Stdout: logWriter,
Stderr: logWriter,
Privileged: rc.Config.Privileged,
UsernsMode: rc.Config.UsernsMode,
Platform: rc.Config.ContainerArchitecture,
})
return stepContainer
}
func (sc *StepContext) runUsesContainer() common.Executor {
rc := sc.RunContext
step := sc.Step
return func(ctx context.Context) error {
image := strings.TrimPrefix(step.Uses, "docker://")
eval := sc.RunContext.NewExpressionEvaluator()
cmd, err := shellquote.Split(eval.Interpolate(step.With["args"]))
if err != nil {
return err
}
entrypoint := strings.Fields(eval.Interpolate(step.With["entrypoint"]))
stepContainer := sc.newStepContainer(ctx, image, cmd, entrypoint)
return common.NewPipelineExecutor(
stepContainer.Pull(rc.Config.ForcePull),
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
stepContainer.Create(rc.Config.ContainerCapAdd, rc.Config.ContainerCapDrop),
stepContainer.Start(true),
).Finally(
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
).Finally(stepContainer.Close())(ctx)
}
}
func (sc *StepContext) setupAction(actionDir string, actionPath string, reader func(context.Context) actionyamlReader) common.Executor {
return func(ctx context.Context) error {
action, err := sc.readAction(sc.Step, actionDir, actionPath, reader(ctx), ioutil.WriteFile)
sc.Action = action
log.Debugf("Read action %v from '%s'", sc.Action, "Unknown")
return err
}
}
func getOsSafeRelativePath(s, prefix string) string {
actionName := strings.TrimPrefix(s, prefix)
if runtime.GOOS == "windows" {
actionName = strings.ReplaceAll(actionName, "\\", "/")
}
actionName = strings.TrimPrefix(actionName, "/")
return actionName
}
func (sc *StepContext) getContainerActionPaths(step *model.Step, actionDir string, rc *RunContext) (string, string) {
actionName := ""
containerActionDir := "."
if step.Type() != model.StepTypeUsesActionRemote {
actionName = getOsSafeRelativePath(actionDir, rc.Config.Workdir)
containerActionDir = rc.Config.ContainerWorkdir() + "/" + actionName
actionName = "./" + actionName
} else if step.Type() == model.StepTypeUsesActionRemote {
actionName = getOsSafeRelativePath(actionDir, rc.ActionCacheDir())
containerActionDir = ActPath + "/actions/" + actionName
}
if actionName == "" {
actionName = filepath.Base(actionDir)
if runtime.GOOS == "windows" {
actionName = strings.ReplaceAll(actionName, "\\", "/")
}
}
return actionName, containerActionDir
}
func (sc *StepContext) runAction(actionDir string, actionPath string, actionRepository string, actionRef string, localAction bool) common.Executor {
rc := sc.RunContext
step := sc.Step
return func(ctx context.Context) error {
// Backup the parent composite action path and restore it on continue
parentActionPath := rc.ActionPath
parentActionRepository := rc.ActionRepository
parentActionRef := rc.ActionRef
defer func() {
rc.ActionPath = parentActionPath
rc.ActionRef = parentActionRef
rc.ActionRepository = parentActionRepository
}()
rc.ActionRef = actionRef
rc.ActionRepository = actionRepository
action := sc.Action
log.Debugf("About to run action %v", action)
sc.populateEnvsFromInput(action, rc)
actionLocation := ""
if actionPath != "" {
actionLocation = path.Join(actionDir, actionPath)
} else {
actionLocation = actionDir
}
actionName, containerActionDir := sc.getContainerActionPaths(step, actionLocation, rc)
log.Debugf("type=%v actionDir=%s actionPath=%s workdir=%s actionCacheDir=%s actionName=%s containerActionDir=%s", step.Type(), actionDir, actionPath, rc.Config.Workdir, rc.ActionCacheDir(), actionName, containerActionDir)
maybeCopyToActionDir := func() error {
rc.ActionPath = containerActionDir
if step.Type() != model.StepTypeUsesActionRemote {
return nil
}
if err := removeGitIgnore(actionDir); err != nil {
return err
}
var containerActionDirCopy string
containerActionDirCopy = strings.TrimSuffix(containerActionDir, actionPath)
log.Debug(containerActionDirCopy)
if !strings.HasSuffix(containerActionDirCopy, `/`) {
containerActionDirCopy += `/`
}
return rc.JobContainer.CopyDir(containerActionDirCopy, actionDir+"/", rc.Config.UseGitIgnore)(ctx)
}
switch action.Runs.Using {
case model.ActionRunsUsingNode12, model.ActionRunsUsingNode16:
if err := maybeCopyToActionDir(); err != nil {
return err
}
containerArgs := []string{"node", path.Join(containerActionDir, action.Runs.Main)}
log.Debugf("executing remote job container: %s", containerArgs)
return rc.execJobContainer(containerArgs, sc.Env, "", "")(ctx)
case model.ActionRunsUsingDocker:
return sc.execAsDocker(ctx, action, actionName, containerActionDir, actionLocation, rc, step, localAction)
case model.ActionRunsUsingComposite:
return sc.execAsComposite(ctx, step, actionDir, rc, containerActionDir, actionName, actionPath, action, maybeCopyToActionDir)
default:
return fmt.Errorf(fmt.Sprintf("The runs.using key must be one of: %v, got %s", []string{
model.ActionRunsUsingDocker,
model.ActionRunsUsingNode12,
model.ActionRunsUsingNode16,
model.ActionRunsUsingComposite,
}, action.Runs.Using))
}
}
}
func (sc *StepContext) evalDockerArgs(action *model.Action, cmd *[]string) {
rc := sc.RunContext
step := sc.Step
oldInputs := rc.Inputs
defer func() {
rc.Inputs = oldInputs
}()
inputs := make(map[string]interface{})
eval := sc.RunContext.NewExpressionEvaluator()
// Set Defaults
for k, input := range action.Inputs {
inputs[k] = eval.Interpolate(input.Default)
}
if step.With != nil {
for k, v := range step.With {
inputs[k] = eval.Interpolate(v)
}
}
rc.Inputs = inputs
stepEE := sc.NewExpressionEvaluator()
for i, v := range *cmd {
(*cmd)[i] = stepEE.Interpolate(v)
}
sc.Env = mergeMaps(sc.Env, action.Runs.Env)
ee := sc.NewExpressionEvaluator()
for k, v := range sc.Env {
sc.Env[k] = ee.Interpolate(v)
}
}
// TODO: break out parts of function to reduce complexicity
// nolint:gocyclo
func (sc *StepContext) execAsDocker(ctx context.Context, action *model.Action, actionName string, containerLocation string, actionLocation string, rc *RunContext, step *model.Step, localAction bool) error {
var prepImage common.Executor
var image string
if strings.HasPrefix(action.Runs.Image, "docker://") {
image = strings.TrimPrefix(action.Runs.Image, "docker://")
} else {
// "-dockeraction" enshures that "./", "./test " won't get converted to "act-:latest", "act-test-:latest" which are invalid docker image names
image = fmt.Sprintf("%s-dockeraction:%s", regexp.MustCompile("[^a-zA-Z0-9]").ReplaceAllString(actionName, "-"), "latest")
image = fmt.Sprintf("act-%s", strings.TrimLeft(image, "-"))
image = strings.ToLower(image)
basedir := actionLocation
if localAction {
basedir = containerLocation
}
contextDir := filepath.Join(basedir, action.Runs.Main)
anyArchExists, err := container.ImageExistsLocally(ctx, image, "any")
if err != nil {
return err
}
correctArchExists, err := container.ImageExistsLocally(ctx, image, rc.Config.ContainerArchitecture)
if err != nil {
return err
}
if anyArchExists && !correctArchExists {
wasRemoved, err := container.RemoveImage(ctx, image, true, true)
if err != nil {
return err
}
if !wasRemoved {
return fmt.Errorf("failed to remove image '%s'", image)
}
}
if !correctArchExists || rc.Config.ForceRebuild {
log.Debugf("image '%s' for architecture '%s' will be built from context '%s", image, rc.Config.ContainerArchitecture, contextDir)
var actionContainer container.Container
if localAction {
actionContainer = sc.RunContext.JobContainer
}
prepImage = container.NewDockerBuildExecutor(container.NewDockerBuildExecutorInput{
ContextDir: contextDir,
ImageTag: image,
Container: actionContainer,
Platform: rc.Config.ContainerArchitecture,
})
} else {
log.Debugf("image '%s' for architecture '%s' already exists", image, rc.Config.ContainerArchitecture)
}
}
eval := sc.NewExpressionEvaluator()
cmd, err := shellquote.Split(eval.Interpolate(step.With["args"]))
if err != nil {
return err
}
if len(cmd) == 0 {
cmd = action.Runs.Args
sc.evalDockerArgs(action, &cmd)
}
entrypoint := strings.Fields(eval.Interpolate(step.With["entrypoint"]))
if len(entrypoint) == 0 {
if action.Runs.Entrypoint != "" {
entrypoint, err = shellquote.Split(action.Runs.Entrypoint)
if err != nil {
return err
}
} else {
entrypoint = nil
}
}
stepContainer := sc.newStepContainer(ctx, image, cmd, entrypoint)
return common.NewPipelineExecutor(
prepImage,
stepContainer.Pull(rc.Config.ForcePull),
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
stepContainer.Create(rc.Config.ContainerCapAdd, rc.Config.ContainerCapDrop),
stepContainer.Start(true),
).Finally(
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
).Finally(stepContainer.Close())(ctx)
}
func (sc *StepContext) execAsComposite(ctx context.Context, step *model.Step, _ string, rc *RunContext, containerActionDir string, actionName string, _ string, action *model.Action, maybeCopyToActionDir func() error) error {
err := maybeCopyToActionDir()
if err != nil {
return err
}
// Disable some features of composite actions, only for feature parity with github
for _, compositeStep := range action.Runs.Steps {
if err := compositeStep.Validate(rc.Config.CompositeRestrictions); err != nil {
return err
}
}
inputs := make(map[string]interface{})
eval := sc.RunContext.NewExpressionEvaluator()
// Set Defaults
for k, input := range action.Inputs {
inputs[k] = eval.Interpolate(input.Default)
}
if step.With != nil {
for k, v := range step.With {
inputs[k] = eval.Interpolate(v)
}
}
// Doesn't work with the command processor has a pointer to the original rc
// compositerc := rc.Clone()
// Workaround start
backup := *rc
defer func() { *rc = backup }()
*rc = *rc.Clone()
scriptName := backup.CurrentStep
for rcs := &backup; rcs.Parent != nil; rcs = rcs.Parent {
scriptName = fmt.Sprintf("%s-composite-%s", rcs.Parent.CurrentStep, scriptName)
}
compositerc := rc
compositerc.Parent = &RunContext{
CurrentStep: scriptName,
}
// Workaround end
compositerc.Composite = action
envToEvaluate := mergeMaps(compositerc.Env, step.Environment())
compositerc.Env = make(map[string]string)
// origEnvMap: is used to pass env changes back to parent runcontext
origEnvMap := make(map[string]string)
for k, v := range envToEvaluate {
ev := eval.Interpolate(v)
origEnvMap[k] = ev
compositerc.Env[k] = ev
}
compositerc.Inputs = inputs
compositerc.ExprEval = compositerc.NewExpressionEvaluator()
err = compositerc.CompositeExecutor()(ctx)
// Map outputs to parent rc
eval = (&StepContext{
Env: compositerc.Env,
RunContext: compositerc,
}).NewExpressionEvaluator()
for outputName, output := range action.Outputs {
backup.setOutput(ctx, map[string]string{
"name": outputName,
}, eval.Interpolate(output.Value))
}
backup.Masks = append(backup.Masks, compositerc.Masks...)
// Test if evaluated parent env was altered by this composite step
// Known Issues:
// - you try to set an env variable to the same value as a scoped step env, will be discared
for k, v := range compositerc.Env {
if ov, ok := origEnvMap[k]; !ok || ov != v {
backup.Env[k] = v
}
}
return err
}
func (sc *StepContext) populateEnvsFromInput(action *model.Action, rc *RunContext) {
for inputID, input := range action.Inputs {
envKey := regexp.MustCompile("[^A-Z0-9-]").ReplaceAllString(strings.ToUpper(inputID), "_")
envKey = fmt.Sprintf("INPUT_%s", envKey)
if _, ok := sc.Env[envKey]; !ok {
sc.Env[envKey] = rc.ExprEval.Interpolate(input.Default)
}
}
}
type remoteAction struct {
URL string
Org string
Repo string
Path string
Ref string
}
func (ra *remoteAction) CloneURL() string {
return fmt.Sprintf("https://%s/%s/%s", ra.URL, ra.Org, ra.Repo)
}
func (ra *remoteAction) IsCheckout() bool {
if ra.Org == "actions" && ra.Repo == "checkout" {
return true
}
return false
}
func newRemoteAction(action string) *remoteAction {
// GitHub's document[^] describes:
// > We strongly recommend that you include the version of
// > the action you are using by specifying a Git ref, SHA, or Docker tag number.
// Actually, the workflow stops if there is the uses directive that hasn't @ref.
// [^]: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions
r := regexp.MustCompile(`^([^/@]+)/([^/@]+)(/([^@]*))?(@(.*))?$`)
matches := r.FindStringSubmatch(action)
if len(matches) < 7 || matches[6] == "" {
return nil
}
return &remoteAction{
Org: matches[1],
Repo: matches[2],
Path: matches[4],
Ref: matches[6],
URL: "github.com",
}
}
// https://github.com/nektos/act/issues/228#issuecomment-629709055
// files in .gitignore are not copied in a Docker container
// this causes issues with actions that ignore other important resources
// such as `node_modules` for example
func removeGitIgnore(directory string) error {
gitIgnorePath := path.Join(directory, ".gitignore")
if _, err := os.Stat(gitIgnorePath); err == nil {
// .gitignore exists
log.Debugf("Removing %s before docker cp", gitIgnorePath)
err := os.Remove(gitIgnorePath)
if err != nil {
return err
}
}
return nil
}

116
pkg/runner/step_context_test.go
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package runner
import (
"context"
"testing"
log "github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"gopkg.in/yaml.v3"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
)
func TestStepContextExecutor(t *testing.T) {
platforms := map[string]string{
"ubuntu-latest": baseImage,
}
tables := []TestJobFileInfo{
{"testdata", "uses-and-run-in-one-step", "push", "Invalid run/uses syntax for job:test step:Test", platforms, ""},
{"testdata", "uses-github-empty", "push", "Expected format {org}/{repo}[/path]@ref", platforms, ""},
{"testdata", "uses-github-noref", "push", "Expected format {org}/{repo}[/path]@ref", platforms, ""},
{"testdata", "uses-github-root", "push", "", platforms, ""},
{"testdata", "uses-github-path", "push", "", platforms, ""},
{"testdata", "uses-docker-url", "push", "", platforms, ""},
{"testdata", "uses-github-full-sha", "push", "", platforms, ""},
{"testdata", "uses-github-short-sha", "push", "Unable to resolve action `actions/hello-world-docker-action@b136eb8`, the provided ref `b136eb8` is the shortened version of a commit SHA, which is not supported. Please use the full commit SHA `b136eb8894c5cb1dd5807da824be97ccdf9b5423` instead", platforms, ""},
}
// These tests are sufficient to only check syntax.
ctx := common.WithDryrun(context.Background(), true)
for _, table := range tables {
runTestJobFile(ctx, t, table)
}
}
func createIfTestStepContext(t *testing.T, input string) *StepContext {
var step *model.Step
err := yaml.Unmarshal([]byte(input), &step)
assert.NoError(t, err)
return &StepContext{
RunContext: &RunContext{
Config: &Config{
Workdir: ".",
Platforms: map[string]string{
"ubuntu-latest": "ubuntu-latest",
},
},
StepResults: map[string]*model.StepResult{},
Env: map[string]string{},
Run: &model.Run{
JobID: "job1",
Workflow: &model.Workflow{
Name: "workflow1",
Jobs: map[string]*model.Job{
"job1": createJob(t, `runs-on: ubuntu-latest`, ""),
},
},
},
},
Step: step,
}
}
func TestStepContextIsEnabled(t *testing.T) {
log.SetLevel(log.DebugLevel)
assertObject := assert.New(t)
// success()
sc := createIfTestStepContext(t, "if: success()")
assertObject.True(sc.isEnabled(context.Background()))
sc = createIfTestStepContext(t, "if: success()")
sc.RunContext.StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusSuccess,
}
assertObject.True(sc.isEnabled(context.Background()))
sc = createIfTestStepContext(t, "if: success()")
sc.RunContext.StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusFailure,
}
assertObject.False(sc.isEnabled(context.Background()))
// failure()
sc = createIfTestStepContext(t, "if: failure()")
assertObject.False(sc.isEnabled(context.Background()))
sc = createIfTestStepContext(t, "if: failure()")
sc.RunContext.StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusSuccess,
}
assertObject.False(sc.isEnabled(context.Background()))
sc = createIfTestStepContext(t, "if: failure()")
sc.RunContext.StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusFailure,
}
assertObject.True(sc.isEnabled(context.Background()))
// always()
sc = createIfTestStepContext(t, "if: always()")
assertObject.True(sc.isEnabled(context.Background()))
sc = createIfTestStepContext(t, "if: always()")
sc.RunContext.StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusSuccess,
}
assertObject.True(sc.isEnabled(context.Background()))
sc = createIfTestStepContext(t, "if: always()")
sc.RunContext.StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusFailure,
}
assertObject.True(sc.isEnabled(context.Background()))
}

121
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package runner
import (
"context"
"fmt"
"strings"
"github.com/kballard/go-shellquote"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/model"
)
type stepDocker struct {
Step *model.Step
RunContext *RunContext
env map[string]string
}
func (sd *stepDocker) pre() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sd *stepDocker) main() common.Executor {
sd.env = map[string]string{}
return runStepExecutor(sd, sd.runUsesContainer())
}
func (sd *stepDocker) post() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sd *stepDocker) getRunContext() *RunContext {
return sd.RunContext
}
func (sd *stepDocker) getStepModel() *model.Step {
return sd.Step
}
func (sd *stepDocker) getEnv() *map[string]string {
return &sd.env
}
func (sd *stepDocker) runUsesContainer() common.Executor {
rc := sd.RunContext
step := sd.Step
return func(ctx context.Context) error {
image := strings.TrimPrefix(step.Uses, "docker://")
eval := rc.NewExpressionEvaluator()
cmd, err := shellquote.Split(eval.Interpolate(step.With["args"]))
if err != nil {
return err
}
entrypoint := strings.Fields(eval.Interpolate(step.With["entrypoint"]))
stepContainer := sd.newStepContainer(ctx, image, cmd, entrypoint)
return common.NewPipelineExecutor(
stepContainer.Pull(rc.Config.ForcePull),
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
stepContainer.Create(rc.Config.ContainerCapAdd, rc.Config.ContainerCapDrop),
stepContainer.Start(true),
).Finally(
stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
).Finally(stepContainer.Close())(ctx)
}
}
var (
ContainerNewContainer = container.NewContainer
)
func (sd *stepDocker) newStepContainer(ctx context.Context, image string, cmd []string, entrypoint []string) container.Container {
rc := sd.RunContext
step := sd.Step
rawLogger := common.Logger(ctx).WithField("raw_output", true)
logWriter := common.NewLineWriter(rc.commandHandler(ctx), func(s string) bool {
if rc.Config.LogOutput {
rawLogger.Infof("%s", s)
} else {
rawLogger.Debugf("%s", s)
}
return true
})
envList := make([]string, 0)
for k, v := range sd.env {
envList = append(envList, fmt.Sprintf("%s=%s", k, v))
}
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TOOL_CACHE", "/opt/hostedtoolcache"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_OS", "Linux"))
envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TEMP", "/tmp"))
binds, mounts := rc.GetBindsAndMounts()
stepContainer := ContainerNewContainer(&container.NewContainerInput{
Cmd: cmd,
Entrypoint: entrypoint,
WorkingDir: rc.Config.ContainerWorkdir(),
Image: image,
Username: rc.Config.Secrets["DOCKER_USERNAME"],
Password: rc.Config.Secrets["DOCKER_PASSWORD"],
Name: createContainerName(rc.jobContainerName(), step.ID),
Env: envList,
Mounts: mounts,
NetworkMode: fmt.Sprintf("container:%s", rc.jobContainerName()),
Binds: binds,
Stdout: logWriter,
Stderr: logWriter,
Privileged: rc.Config.Privileged,
UsernsMode: rc.Config.UsernsMode,
Platform: rc.Config.ContainerArchitecture,
})
return stepContainer
}

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pkg/runner/step_docker_test.go Normal file
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package runner
import (
"context"
"testing"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/model"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
func TestStepDockerMain(t *testing.T) {
cm := &containerMock{}
var input *container.NewContainerInput
// mock the new container call
origContainerNewContainer := ContainerNewContainer
ContainerNewContainer = func(containerInput *container.NewContainerInput) container.Container {
input = containerInput
return cm
}
defer (func() {
ContainerNewContainer = origContainerNewContainer
})()
sd := &stepDocker{
RunContext: &RunContext{
StepResults: map[string]*model.StepResult{},
Config: &Config{},
Run: &model.Run{
JobID: "1",
Workflow: &model.Workflow{
Jobs: map[string]*model.Job{
"1": {
Defaults: model.Defaults{
Run: model.RunDefaults{
Shell: "bash",
},
},
},
},
},
},
JobContainer: cm,
},
Step: &model.Step{
ID: "1",
Uses: "docker://node:14",
WorkingDirectory: "workdir",
},
}
ctx := context.Background()
cm.On("UpdateFromImageEnv", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromEnv", "/var/run/act/workflow/envs.txt", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromPath", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("Pull", false).Return(func(ctx context.Context) error {
return nil
})
cm.On("Remove").Return(func(ctx context.Context) error {
return nil
})
cm.On("Create", []string(nil), []string(nil)).Return(func(ctx context.Context) error {
return nil
})
cm.On("Start", true).Return(func(ctx context.Context) error {
return nil
})
cm.On("Close").Return(func(ctx context.Context) error {
return nil
})
err := sd.main()(ctx)
assert.Nil(t, err)
assert.Equal(t, "node:14", input.Image)
cm.AssertExpectations(t)
}
func TestStepDockerPrePost(t *testing.T) {
ctx := context.Background()
sd := &stepDocker{}
err := sd.pre()(ctx)
assert.Nil(t, err)
err = sd.post()(ctx)
assert.Nil(t, err)
}

46
pkg/runner/step_factory.go Normal file
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package runner
import (
"fmt"
"github.com/nektos/act/pkg/model"
)
type stepFactory interface {
newStep(step *model.Step, rc *RunContext) (step, error)
}
type stepFactoryImpl struct{}
func (sf *stepFactoryImpl) newStep(stepModel *model.Step, rc *RunContext) (step, error) {
switch stepModel.Type() {
case model.StepTypeInvalid:
return nil, fmt.Errorf("Invalid run/uses syntax for job:%s step:%+v", rc.Run, stepModel)
case model.StepTypeRun:
return &stepRun{
Step: stepModel,
RunContext: rc,
}, nil
case model.StepTypeUsesActionLocal:
return &stepActionLocal{
Step: stepModel,
RunContext: rc,
readAction: readActionImpl,
runAction: runActionImpl,
}, nil
case model.StepTypeUsesActionRemote:
return &stepActionRemote{
Step: stepModel,
RunContext: rc,
readAction: readActionImpl,
runAction: runActionImpl,
}, nil
case model.StepTypeUsesDockerURL:
return &stepDocker{
Step: stepModel,
RunContext: rc,
}, nil
}
return nil, fmt.Errorf("Unable to determine how to run job:%s step:%+v", rc.Run, stepModel)
}

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package runner
import (
"testing"
"github.com/nektos/act/pkg/model"
"github.com/stretchr/testify/assert"
)
func TestStepFactoryNewStep(t *testing.T) {
table := []struct {
name string
model *model.Step
check func(s step) bool
}{
{
name: "StepRemoteAction",
model: &model.Step{
Uses: "remote/action@v1",
},
check: func(s step) bool {
_, ok := s.(*stepActionRemote)
return ok
},
},
{
name: "StepLocalAction",
model: &model.Step{
Uses: "./action@v1",
},
check: func(s step) bool {
_, ok := s.(*stepActionLocal)
return ok
},
},
{
name: "StepDocker",
model: &model.Step{
Uses: "docker://image:tag",
},
check: func(s step) bool {
_, ok := s.(*stepDocker)
return ok
},
},
{
name: "StepRun",
model: &model.Step{
Run: "cmd",
},
check: func(s step) bool {
_, ok := s.(*stepRun)
return ok
},
},
}
for _, tt := range table {
t.Run(tt.name, func(t *testing.T) {
sf := &stepFactoryImpl{}
step, err := sf.newStep(tt.model, &RunContext{})
assert.True(t, tt.check((step)))
assert.Nil(t, err)
})
}
}
func TestStepFactoryInvalidStep(t *testing.T) {
model := &model.Step{
Uses: "remote/action@v1",
Run: "cmd",
}
sf := &stepFactoryImpl{}
_, err := sf.newStep(model, &RunContext{})
assert.Error(t, err)
}

166
pkg/runner/step_run.go Normal file
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package runner
import (
"context"
"fmt"
"strings"
"github.com/kballard/go-shellquote"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/model"
log "github.com/sirupsen/logrus"
)
type stepRun struct {
Step *model.Step
RunContext *RunContext
cmd []string
env map[string]string
}
func (sr *stepRun) pre() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sr *stepRun) main() common.Executor {
sr.env = map[string]string{}
return runStepExecutor(sr, common.NewPipelineExecutor(
sr.setupShellCommandExecutor(),
func(ctx context.Context) error {
return sr.getRunContext().JobContainer.Exec(sr.cmd, sr.env, "", sr.Step.WorkingDirectory)(ctx)
},
))
}
func (sr *stepRun) post() common.Executor {
return func(ctx context.Context) error {
return nil
}
}
func (sr *stepRun) getRunContext() *RunContext {
return sr.RunContext
}
func (sr *stepRun) getStepModel() *model.Step {
return sr.Step
}
func (sr *stepRun) getEnv() *map[string]string {
return &sr.env
}
func (sr *stepRun) setupShellCommandExecutor() common.Executor {
return func(ctx context.Context) error {
scriptName, script, err := sr.setupShellCommand()
if err != nil {
return err
}
return sr.RunContext.JobContainer.Copy(ActPath, &container.FileEntry{
Name: scriptName,
Mode: 0755,
Body: script,
})(ctx)
}
}
func getScriptName(rc *RunContext, step *model.Step) string {
scriptName := step.ID
for rcs := rc; rcs.Parent != nil; rcs = rcs.Parent {
scriptName = fmt.Sprintf("%s-composite-%s", rcs.Parent.CurrentStep, scriptName)
}
return fmt.Sprintf("workflow/%s", scriptName)
}
// TODO: Currently we just ignore top level keys, BUT we should return proper error on them
// BUTx2 I leave this for when we rewrite act to use actionlint for workflow validation
// so we return proper errors before any execution or spawning containers
// it will error anyway with:
// OCI runtime exec failed: exec failed: container_linux.go:380: starting container process caused: exec: "${{": executable file not found in $PATH: unknown
func (sr *stepRun) setupShellCommand() (name, script string, err error) {
sr.setupShell()
sr.setupWorkingDirectory()
step := sr.Step
script = sr.RunContext.NewStepExpressionEvaluator(sr).Interpolate(step.Run)
scCmd := step.ShellCommand()
name = getScriptName(sr.RunContext, step)
// Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L47-L64
// Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L19-L27
runPrepend := ""
runAppend := ""
switch step.Shell {
case "bash", "sh":
name += ".sh"
case "pwsh", "powershell":
name += ".ps1"
runPrepend = "$ErrorActionPreference = 'stop'"
runAppend = "if ((Test-Path -LiteralPath variable:/LASTEXITCODE)) { exit $LASTEXITCODE }"
case "cmd":
name += ".cmd"
runPrepend = "@echo off"
case "python":
name += ".py"
}
script = fmt.Sprintf("%s\n%s\n%s", runPrepend, script, runAppend)
log.Debugf("Wrote command \n%s\n to '%s'", script, name)
scriptPath := fmt.Sprintf("%s/%s", ActPath, name)
sr.cmd, err = shellquote.Split(strings.Replace(scCmd, `{0}`, scriptPath, 1))
return name, script, err
}
func (sr *stepRun) setupShell() {
rc := sr.RunContext
step := sr.Step
if step.Shell == "" {
step.Shell = rc.Run.Job().Defaults.Run.Shell
}
step.Shell = rc.ExprEval.Interpolate(step.Shell)
if step.Shell == "" {
step.Shell = rc.Run.Workflow.Defaults.Run.Shell
}
// current GitHub Runner behaviour is that default is `sh`,
// but if it's not container it validates with `which` command
// if `bash` is available, and provides `bash` if it is
// for now I'm going to leave below logic, will address it in different PR
// https://github.com/actions/runner/blob/9a829995e02d2db64efb939dc2f283002595d4d9/src/Runner.Worker/Handlers/ScriptHandler.cs#L87-L91
if rc.Run.Job().Container() != nil {
if rc.Run.Job().Container().Image != "" && step.Shell == "" {
step.Shell = "sh"
}
}
}
func (sr *stepRun) setupWorkingDirectory() {
rc := sr.RunContext
step := sr.Step
if step.WorkingDirectory == "" {
step.WorkingDirectory = rc.Run.Job().Defaults.Run.WorkingDirectory
}
// jobs can receive context values, so we interpolate
step.WorkingDirectory = rc.ExprEval.Interpolate(step.WorkingDirectory)
// but top level keys in workflow file like `defaults` or `env` can't
if step.WorkingDirectory == "" {
step.WorkingDirectory = rc.Run.Workflow.Defaults.Run.WorkingDirectory
}
}

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pkg/runner/step_run_test.go Normal file
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package runner
import (
"context"
"testing"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/model"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
func TestStepRun(t *testing.T) {
cm := &containerMock{}
fileEntry := &container.FileEntry{
Name: "workflow/1.sh",
Mode: 0755,
Body: "\ncmd\n",
}
sr := &stepRun{
RunContext: &RunContext{
StepResults: map[string]*model.StepResult{},
ExprEval: &expressionEvaluator{},
Config: &Config{},
Run: &model.Run{
JobID: "1",
Workflow: &model.Workflow{
Jobs: map[string]*model.Job{
"1": {
Defaults: model.Defaults{
Run: model.RunDefaults{
Shell: "bash",
},
},
},
},
},
},
JobContainer: cm,
},
Step: &model.Step{
ID: "1",
Run: "cmd",
WorkingDirectory: "workdir",
},
}
cm.On("Copy", "/var/run/act", []*container.FileEntry{fileEntry}).Return(func(ctx context.Context) error {
return nil
})
cm.On("Exec", []string{"bash", "--noprofile", "--norc", "-e", "-o", "pipefail", "/var/run/act/workflow/1.sh"}, mock.AnythingOfType("map[string]string"), "", "workdir").Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromImageEnv", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromEnv", "/var/run/act/workflow/envs.txt", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
cm.On("UpdateFromPath", mock.AnythingOfType("*map[string]string")).Return(func(ctx context.Context) error {
return nil
})
ctx := context.Background()
err := sr.main()(ctx)
assert.Nil(t, err)
cm.AssertExpectations(t)
}
func TestStepRunPrePost(t *testing.T) {
ctx := context.Background()
sr := &stepRun{}
err := sr.pre()(ctx)
assert.Nil(t, err)
err = sr.post()(ctx)
assert.Nil(t, err)
}

276
pkg/runner/step_test.go Normal file
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package runner
import (
"context"
"testing"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/model"
log "github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
yaml "gopkg.in/yaml.v3"
)
func TestMergeIntoMap(t *testing.T) {
table := []struct {
name string
target map[string]string
maps []map[string]string
expected map[string]string
}{
{
name: "testEmptyMap",
target: map[string]string{},
maps: []map[string]string{},
expected: map[string]string{},
},
{
name: "testMergeIntoEmptyMap",
target: map[string]string{},
maps: []map[string]string{
{
"key1": "value1",
"key2": "value2",
}, {
"key2": "overridden",
"key3": "value3",
},
},
expected: map[string]string{
"key1": "value1",
"key2": "overridden",
"key3": "value3",
},
},
{
name: "testMergeIntoExistingMap",
target: map[string]string{
"key1": "value1",
"key2": "value2",
},
maps: []map[string]string{
{
"key1": "overridden",
},
},
expected: map[string]string{
"key1": "overridden",
"key2": "value2",
},
},
}
for _, tt := range table {
t.Run(tt.name, func(t *testing.T) {
mergeIntoMap(&tt.target, tt.maps...)
assert.Equal(t, tt.expected, tt.target)
})
}
}
type stepMock struct {
mock.Mock
step
}
func (sm *stepMock) pre() common.Executor {
args := sm.Called()
return args.Get(0).(func(context.Context) error)
}
func (sm *stepMock) main() common.Executor {
args := sm.Called()
return args.Get(0).(func(context.Context) error)
}
func (sm *stepMock) post() common.Executor {
args := sm.Called()
return args.Get(0).(func(context.Context) error)
}
func (sm *stepMock) getRunContext() *RunContext {
args := sm.Called()
return args.Get(0).(*RunContext)
}
func (sm *stepMock) getStepModel() *model.Step {
args := sm.Called()
return args.Get(0).(*model.Step)
}
func (sm *stepMock) getEnv() *map[string]string {
args := sm.Called()
return args.Get(0).(*map[string]string)
}
func TestSetupEnv(t *testing.T) {
cm := &containerMock{}
sm := &stepMock{}
rc := &RunContext{
Config: &Config{
Env: map[string]string{
"GITHUB_RUN_ID": "runId",
},
},
Run: &model.Run{
JobID: "1",
Workflow: &model.Workflow{
Jobs: map[string]*model.Job{
"1": {
Env: yaml.Node{
Value: "JOB_KEY: jobvalue",
},
},
},
},
},
Env: map[string]string{
"RC_KEY": "rcvalue",
},
ExtraPath: []string{"/path/to/extra/file"},
JobContainer: cm,
}
step := &model.Step{
With: map[string]string{
"STEP_WITH": "with-value",
},
}
env := map[string]string{
"PATH": "",
}
sm.On("getRunContext").Return(rc)
sm.On("getStepModel").Return(step)
sm.On("getEnv").Return(&env)
cm.On("UpdateFromImageEnv", &env).Return(func(ctx context.Context) error { return nil })
cm.On("UpdateFromEnv", "/var/run/act/workflow/envs.txt", &env).Return(func(ctx context.Context) error { return nil })
cm.On("UpdateFromPath", &env).Return(func(ctx context.Context) error { return nil })
err := setupEnv(context.Background(), sm)
assert.Nil(t, err)
// These are commit or system specific
delete((env), "GITHUB_REF")
delete((env), "GITHUB_SHA")
delete((env), "GITHUB_WORKSPACE")
delete((env), "GITHUB_REPOSITORY")
delete((env), "GITHUB_REPOSITORY_OWNER")
delete((env), "GITHUB_ACTOR")
assert.Equal(t, map[string]string{
"ACT": "true",
"CI": "true",
"GITHUB_ACTION": "",
"GITHUB_ACTIONS": "true",
"GITHUB_ACTION_PATH": "",
"GITHUB_ACTION_REF": "",
"GITHUB_ACTION_REPOSITORY": "",
"GITHUB_API_URL": "https:///api/v3",
"GITHUB_BASE_REF": "",
"GITHUB_ENV": "/var/run/act/workflow/envs.txt",
"GITHUB_EVENT_NAME": "",
"GITHUB_EVENT_PATH": "/var/run/act/workflow/event.json",
"GITHUB_GRAPHQL_URL": "https:///api/graphql",
"GITHUB_HEAD_REF": "",
"GITHUB_JOB": "",
"GITHUB_PATH": "/var/run/act/workflow/paths.txt",
"GITHUB_RETENTION_DAYS": "0",
"GITHUB_RUN_ID": "runId",
"GITHUB_RUN_NUMBER": "1",
"GITHUB_SERVER_URL": "https://",
"GITHUB_TOKEN": "",
"GITHUB_WORKFLOW": "",
"INPUT_STEP_WITH": "with-value",
"PATH": "/path/to/extra/file:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"RC_KEY": "rcvalue",
"RUNNER_PERFLOG": "/dev/null",
"RUNNER_TRACKING_ID": "",
}, env)
cm.AssertExpectations(t)
}
func TestIsStepEnabled(t *testing.T) {
createTestStep := func(t *testing.T, input string) step {
var step *model.Step
err := yaml.Unmarshal([]byte(input), &step)
assert.NoError(t, err)
return &stepRun{
RunContext: &RunContext{
Config: &Config{
Workdir: ".",
Platforms: map[string]string{
"ubuntu-latest": "ubuntu-latest",
},
},
StepResults: map[string]*model.StepResult{},
Env: map[string]string{},
Run: &model.Run{
JobID: "job1",
Workflow: &model.Workflow{
Name: "workflow1",
Jobs: map[string]*model.Job{
"job1": createJob(t, `runs-on: ubuntu-latest`, ""),
},
},
},
},
Step: step,
}
}
log.SetLevel(log.DebugLevel)
assertObject := assert.New(t)
// success()
step := createTestStep(t, "if: success()")
assertObject.True(isStepEnabled(context.Background(), step))
step = createTestStep(t, "if: success()")
step.getRunContext().StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusSuccess,
}
assertObject.True(isStepEnabled(context.Background(), step))
step = createTestStep(t, "if: success()")
step.getRunContext().StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusFailure,
}
assertObject.False(isStepEnabled(context.Background(), step))
// failure()
step = createTestStep(t, "if: failure()")
assertObject.False(isStepEnabled(context.Background(), step))
step = createTestStep(t, "if: failure()")
step.getRunContext().StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusSuccess,
}
assertObject.False(isStepEnabled(context.Background(), step))
step = createTestStep(t, "if: failure()")
step.getRunContext().StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusFailure,
}
assertObject.True(isStepEnabled(context.Background(), step))
// always()
step = createTestStep(t, "if: always()")
assertObject.True(isStepEnabled(context.Background(), step))
step = createTestStep(t, "if: always()")
step.getRunContext().StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusSuccess,
}
assertObject.True(isStepEnabled(context.Background(), step))
step = createTestStep(t, "if: always()")
step.getRunContext().StepResults["a"] = &model.StepResult{
Conclusion: model.StepStatusFailure,
}
assertObject.True(isStepEnabled(context.Background(), step))
}