act/pkg/runner/step.go

309 lines
8.6 KiB
Go

package runner
import (
"context"
"fmt"
"path"
"strconv"
"strings"
"time"
"github.com/nektos/act/pkg/common"
"github.com/nektos/act/pkg/container"
"github.com/nektos/act/pkg/exprparser"
"github.com/nektos/act/pkg/model"
)
type step interface {
pre() common.Executor
main() common.Executor
post() common.Executor
getRunContext() *RunContext
getGithubContext(ctx context.Context) *model.GithubContext
getStepModel() *model.Step
getEnv() *map[string]string
getIfExpression(context context.Context, stage stepStage) string
}
type stepStage int
const (
stepStagePre stepStage = iota
stepStageMain
stepStagePost
)
func (s stepStage) String() string {
switch s {
case stepStagePre:
return "Pre"
case stepStageMain:
return "Main"
case stepStagePost:
return "Post"
}
return "Unknown"
}
func processRunnerEnvFileCommand(ctx context.Context, fileName string, rc *RunContext, setter func(context.Context, map[string]string, string)) error {
env := map[string]string{}
err := rc.JobContainer.UpdateFromEnv(path.Join(rc.JobContainer.GetActPath(), fileName), &env)(ctx)
if err != nil {
return err
}
for k, v := range env {
setter(ctx, map[string]string{"name": k}, v)
}
return nil
}
func runStepExecutor(step step, stage stepStage, executor common.Executor) common.Executor {
return func(ctx context.Context) error {
logger := common.Logger(ctx)
rc := step.getRunContext()
stepModel := step.getStepModel()
ifExpression := step.getIfExpression(ctx, stage)
rc.CurrentStep = stepModel.ID
stepResult := &model.StepResult{
Outcome: model.StepStatusSuccess,
Conclusion: model.StepStatusSuccess,
Outputs: make(map[string]string),
}
if stage == stepStageMain {
rc.StepResults[rc.CurrentStep] = stepResult
}
err := setupEnv(ctx, step)
if err != nil {
return err
}
runStep, err := isStepEnabled(ctx, ifExpression, step, stage)
if err != nil {
stepResult.Conclusion = model.StepStatusFailure
stepResult.Outcome = model.StepStatusFailure
return err
}
if !runStep {
stepResult.Conclusion = model.StepStatusSkipped
stepResult.Outcome = model.StepStatusSkipped
logger.WithField("stepResult", stepResult.Outcome).Debugf("Skipping step '%s' due to '%s'", stepModel, ifExpression)
return nil
}
stepString := rc.ExprEval.Interpolate(ctx, stepModel.String())
if strings.Contains(stepString, "::add-mask::") {
stepString = "add-mask command"
}
logger.Infof("\u2B50 Run %s %s", stage, stepString)
// Prepare and clean Runner File Commands
actPath := rc.JobContainer.GetActPath()
outputFileCommand := path.Join("workflow", "outputcmd.txt")
(*step.getEnv())["GITHUB_OUTPUT"] = path.Join(actPath, outputFileCommand)
stateFileCommand := path.Join("workflow", "statecmd.txt")
(*step.getEnv())["GITHUB_STATE"] = path.Join(actPath, stateFileCommand)
pathFileCommand := path.Join("workflow", "pathcmd.txt")
(*step.getEnv())["GITHUB_PATH"] = path.Join(actPath, pathFileCommand)
envFileCommand := path.Join("workflow", "envs.txt")
(*step.getEnv())["GITHUB_ENV"] = path.Join(actPath, envFileCommand)
summaryFileCommand := path.Join("workflow", "SUMMARY.md")
(*step.getEnv())["GITHUB_STEP_SUMMARY"] = path.Join(actPath, summaryFileCommand)
_ = rc.JobContainer.Copy(actPath, &container.FileEntry{
Name: outputFileCommand,
Mode: 0o666,
}, &container.FileEntry{
Name: stateFileCommand,
Mode: 0o666,
}, &container.FileEntry{
Name: pathFileCommand,
Mode: 0o666,
}, &container.FileEntry{
Name: envFileCommand,
Mode: 0666,
}, &container.FileEntry{
Name: summaryFileCommand,
Mode: 0o666,
})(ctx)
timeoutctx, cancelTimeOut := evaluateStepTimeout(ctx, rc.ExprEval, stepModel)
defer cancelTimeOut()
err = executor(timeoutctx)
if err == nil {
logger.WithField("stepResult", stepResult.Outcome).Infof(" \u2705 Success - %s %s", stage, stepString)
} else {
stepResult.Outcome = model.StepStatusFailure
continueOnError, parseErr := isContinueOnError(ctx, stepModel.RawContinueOnError, step, stage)
if parseErr != nil {
stepResult.Conclusion = model.StepStatusFailure
return parseErr
}
if continueOnError {
logger.Infof("Failed but continue next step")
err = nil
stepResult.Conclusion = model.StepStatusSuccess
} else {
stepResult.Conclusion = model.StepStatusFailure
}
logger.WithField("stepResult", stepResult.Outcome).Errorf(" \u274C Failure - %s %s", stage, stepString)
}
// Process Runner File Commands
orgerr := err
err = processRunnerEnvFileCommand(ctx, envFileCommand, rc, rc.setEnv)
if err != nil {
return err
}
err = processRunnerEnvFileCommand(ctx, stateFileCommand, rc, rc.saveState)
if err != nil {
return err
}
err = processRunnerEnvFileCommand(ctx, outputFileCommand, rc, rc.setOutput)
if err != nil {
return err
}
err = rc.UpdateExtraPath(ctx, path.Join(actPath, pathFileCommand))
if err != nil {
return err
}
if orgerr != nil {
return orgerr
}
return err
}
}
func evaluateStepTimeout(ctx context.Context, exprEval ExpressionEvaluator, stepModel *model.Step) (context.Context, context.CancelFunc) {
timeout := exprEval.Interpolate(ctx, stepModel.TimeoutMinutes)
if timeout != "" {
if timeOutMinutes, err := strconv.ParseInt(timeout, 10, 64); err == nil {
return context.WithTimeout(ctx, time.Duration(timeOutMinutes)*time.Minute)
}
}
return ctx, func() {}
}
func setupEnv(ctx context.Context, step step) error {
rc := step.getRunContext()
mergeEnv(ctx, step)
// merge step env last, since it should not be overwritten
mergeIntoMap(step, step.getEnv(), step.getStepModel().GetEnv())
exprEval := rc.NewExpressionEvaluator(ctx)
for k, v := range *step.getEnv() {
if !strings.HasPrefix(k, "INPUT_") {
(*step.getEnv())[k] = exprEval.Interpolate(ctx, v)
}
}
// after we have an evaluated step context, update the expressions evaluator with a new env context
// you can use step level env in the with property of a uses construct
exprEval = rc.NewExpressionEvaluatorWithEnv(ctx, *step.getEnv())
for k, v := range *step.getEnv() {
if strings.HasPrefix(k, "INPUT_") {
(*step.getEnv())[k] = exprEval.Interpolate(ctx, v)
}
}
common.Logger(ctx).Debugf("setupEnv => %v", *step.getEnv())
return nil
}
func mergeEnv(ctx context.Context, step step) {
env := step.getEnv()
rc := step.getRunContext()
job := rc.Run.Job()
c := job.Container()
if c != nil {
mergeIntoMap(step, env, rc.GetEnv(), c.Env)
} else {
mergeIntoMap(step, env, rc.GetEnv())
}
rc.withGithubEnv(ctx, step.getGithubContext(ctx), *env)
}
func isStepEnabled(ctx context.Context, expr string, step step, stage stepStage) (bool, error) {
rc := step.getRunContext()
var defaultStatusCheck exprparser.DefaultStatusCheck
if stage == stepStagePost {
defaultStatusCheck = exprparser.DefaultStatusCheckAlways
} else {
defaultStatusCheck = exprparser.DefaultStatusCheckSuccess
}
runStep, err := EvalBool(ctx, rc.NewStepExpressionEvaluator(ctx, step), expr, defaultStatusCheck)
if err != nil {
return false, fmt.Errorf(" \u274C Error in if-expression: \"if: %s\" (%s)", expr, err)
}
return runStep, nil
}
func isContinueOnError(ctx context.Context, expr string, step step, _ stepStage) (bool, error) {
// https://github.com/github/docs/blob/3ae84420bd10997bb5f35f629ebb7160fe776eae/content/actions/reference/workflow-syntax-for-github-actions.md?plain=true#L962
if len(strings.TrimSpace(expr)) == 0 {
return false, nil
}
rc := step.getRunContext()
continueOnError, err := EvalBool(ctx, rc.NewStepExpressionEvaluator(ctx, step), expr, exprparser.DefaultStatusCheckNone)
if err != nil {
return false, fmt.Errorf(" \u274C Error in continue-on-error-expression: \"continue-on-error: %s\" (%s)", expr, err)
}
return continueOnError, nil
}
func mergeIntoMap(step step, target *map[string]string, maps ...map[string]string) {
if rc := step.getRunContext(); rc != nil && rc.JobContainer != nil && rc.JobContainer.IsEnvironmentCaseInsensitive() {
mergeIntoMapCaseInsensitive(*target, maps...)
} else {
mergeIntoMapCaseSensitive(*target, maps...)
}
}
func mergeIntoMapCaseSensitive(target map[string]string, maps ...map[string]string) {
for _, m := range maps {
for k, v := range m {
target[k] = v
}
}
}
func mergeIntoMapCaseInsensitive(target map[string]string, maps ...map[string]string) {
foldKeys := make(map[string]string, len(target))
for k := range target {
foldKeys[strings.ToLower(k)] = k
}
toKey := func(s string) string {
foldKey := strings.ToLower(s)
if k, ok := foldKeys[foldKey]; ok {
return k
}
foldKeys[strings.ToLower(foldKey)] = s
return s
}
for _, m := range maps {
for k, v := range m {
target[toKey(k)] = v
}
}
}