33ccfa6f3b
* fix: change `env` to be an interface allows to use GitHub functions like `fromJson()` * fix: change matrix to an interface instead of map This allows to use GitHub functions like `fromJson()` to create dynamic matrixes Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
665 lines
20 KiB
Go
665 lines
20 KiB
Go
package runner
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import (
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"context"
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// Go told me to?
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_ "embed"
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"path/filepath"
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"regexp"
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"runtime"
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"strings"
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"github.com/kballard/go-shellquote"
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"github.com/pkg/errors"
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log "github.com/sirupsen/logrus"
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"github.com/nektos/act/pkg/common"
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"github.com/nektos/act/pkg/container"
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"github.com/nektos/act/pkg/model"
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)
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// StepContext contains info about current job
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type StepContext struct {
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RunContext *RunContext
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Step *model.Step
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Env map[string]string
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Cmd []string
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Action *model.Action
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}
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func (sc *StepContext) execJobContainer() common.Executor {
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return func(ctx context.Context) error {
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return sc.RunContext.execJobContainer(sc.Cmd, sc.Env)(ctx)
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}
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}
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type formatError string
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func (e formatError) Error() string {
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return fmt.Sprintf("Expected format {org}/{repo}[/path]@ref. Actual '%s' Input string was not in a correct format.", string(e))
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}
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// Executor for a step context
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func (sc *StepContext) Executor() common.Executor {
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rc := sc.RunContext
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step := sc.Step
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switch step.Type() {
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case model.StepTypeRun:
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return common.NewPipelineExecutor(
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sc.setupShellCommand(),
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sc.execJobContainer(),
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)
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case model.StepTypeUsesDockerURL:
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return common.NewPipelineExecutor(
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sc.runUsesContainer(),
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)
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case model.StepTypeUsesActionLocal:
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actionDir := filepath.Join(rc.Config.Workdir, step.Uses)
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return common.NewPipelineExecutor(
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sc.setupAction(actionDir, ""),
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sc.runAction(actionDir, ""),
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)
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case model.StepTypeUsesActionRemote:
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remoteAction := newRemoteAction(step.Uses)
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if remoteAction == nil {
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return common.NewErrorExecutor(formatError(step.Uses))
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}
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remoteAction.URL = rc.Config.GitHubInstance
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github := rc.getGithubContext()
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if remoteAction.IsCheckout() && github.isLocalCheckout(step) {
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return func(ctx context.Context) error {
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common.Logger(ctx).Debugf("Skipping local actions/checkout because workdir was already copied")
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return nil
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}
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}
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actionDir := fmt.Sprintf("%s/%s", rc.ActionCacheDir(), strings.ReplaceAll(step.Uses, "/", "-"))
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gitClone := common.NewGitCloneExecutor(common.NewGitCloneExecutorInput{
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URL: remoteAction.CloneURL(),
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Ref: remoteAction.Ref,
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Dir: actionDir,
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Token: github.Token,
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})
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var ntErr common.Executor
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if err := gitClone(context.TODO()); err != nil {
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if err.Error() == "short SHA references are not supported" {
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err = errors.Cause(err)
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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()))
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} else if err.Error() != "some refs were not updated" {
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return common.NewErrorExecutor(err)
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} else {
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ntErr = common.NewInfoExecutor("Non-terminating error while running 'git clone': %v", err)
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}
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}
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return common.NewPipelineExecutor(
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ntErr,
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sc.setupAction(actionDir, remoteAction.Path),
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sc.runAction(actionDir, remoteAction.Path),
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)
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case model.StepTypeInvalid:
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return common.NewErrorExecutor(fmt.Errorf("Invalid run/uses syntax for job:%s step:%+v", rc.Run, step))
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}
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return common.NewErrorExecutor(fmt.Errorf("Unable to determine how to run job:%s step:%+v", rc.Run, step))
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}
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func (sc *StepContext) mergeEnv() map[string]string {
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rc := sc.RunContext
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job := rc.Run.Job()
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step := sc.Step
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var env map[string]string
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c := job.Container()
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if c != nil {
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env = mergeMaps(rc.GetEnv(), c.Env, step.GetEnv())
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} else {
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env = mergeMaps(rc.GetEnv(), step.GetEnv())
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}
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env["PATH"] = `/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin`
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if (rc.ExtraPath != nil) && (len(rc.ExtraPath) > 0) {
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env["PATH"] = strings.Join(rc.ExtraPath, `:`)
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}
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sc.Env = rc.withGithubEnv(env)
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return env
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}
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func (sc *StepContext) interpolateEnv(exprEval ExpressionEvaluator) {
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for k, v := range sc.Env {
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sc.Env[k] = exprEval.Interpolate(v)
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}
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}
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func (sc *StepContext) setupEnv(ctx context.Context) (ExpressionEvaluator, error) {
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rc := sc.RunContext
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sc.Env = sc.mergeEnv()
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if sc.Env != nil {
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err := rc.JobContainer.UpdateFromEnv(sc.Env["GITHUB_ENV"], &sc.Env)(ctx)
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if err != nil {
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return nil, err
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}
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err = rc.JobContainer.UpdateFromPath(&sc.Env)(ctx)
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if err != nil {
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return nil, err
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}
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}
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evaluator := sc.NewExpressionEvaluator()
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sc.interpolateEnv(evaluator)
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common.Logger(ctx).Debugf("setupEnv => %v", sc.Env)
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return evaluator, nil
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}
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func (sc *StepContext) setupShellCommand() common.Executor {
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rc := sc.RunContext
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step := sc.Step
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return func(ctx context.Context) error {
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var script strings.Builder
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var err error
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if step.WorkingDirectory == "" {
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step.WorkingDirectory = rc.Run.Job().Defaults.Run.WorkingDirectory
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}
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if step.WorkingDirectory == "" {
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step.WorkingDirectory = rc.Run.Workflow.Defaults.Run.WorkingDirectory
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}
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if step.WorkingDirectory != "" {
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_, err = script.WriteString(fmt.Sprintf("cd %s\n", step.WorkingDirectory))
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if err != nil {
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return err
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}
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}
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run := rc.ExprEval.Interpolate(step.Run)
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if _, err = script.WriteString(run); err != nil {
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return err
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}
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scriptName := fmt.Sprintf("workflow/%s", step.ID)
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// Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L47-L64
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// Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L19-L27
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runPrepend := ""
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runAppend := ""
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scriptExt := ""
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switch step.Shell {
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case "bash", "sh":
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scriptExt = ".sh"
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case "pwsh", "powershell":
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scriptExt = ".ps1"
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runPrepend = "$ErrorActionPreference = 'stop'"
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runAppend = "if ((Test-Path -LiteralPath variable:/LASTEXITCODE)) { exit $LASTEXITCODE }"
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case "cmd":
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scriptExt = ".cmd"
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runPrepend = "@echo off"
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case "python":
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scriptExt = ".py"
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}
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scriptName += scriptExt
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run = runPrepend + "\n" + run + "\n" + runAppend
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log.Debugf("Wrote command '%s' to '%s'", run, scriptName)
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containerPath := fmt.Sprintf("%s/%s", rc.Config.ContainerWorkdir(), scriptName)
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if step.Shell == "" {
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step.Shell = rc.Run.Job().Defaults.Run.Shell
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}
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if step.Shell == "" {
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step.Shell = rc.Run.Workflow.Defaults.Run.Shell
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}
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scCmd := step.ShellCommand()
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scResolvedCmd := strings.Replace(scCmd, "{0}", containerPath, 1)
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if step.Shell == "pwsh" || step.Shell == "powershell" {
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sc.Cmd = strings.SplitN(scResolvedCmd, " ", 3)
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} else {
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sc.Cmd = strings.Fields(scResolvedCmd)
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}
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return rc.JobContainer.Copy(rc.Config.ContainerWorkdir(), &container.FileEntry{
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Name: scriptName,
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Mode: 0755,
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Body: script.String(),
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})(ctx)
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}
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}
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func (sc *StepContext) newStepContainer(ctx context.Context, image string, cmd []string, entrypoint []string) container.Container {
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rc := sc.RunContext
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step := sc.Step
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rawLogger := common.Logger(ctx).WithField("raw_output", true)
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logWriter := common.NewLineWriter(rc.commandHandler(ctx), func(s string) bool {
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if rc.Config.LogOutput {
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rawLogger.Infof("%s", s)
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} else {
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rawLogger.Debugf("%s", s)
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}
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return true
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})
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envList := make([]string, 0)
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for k, v := range sc.Env {
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envList = append(envList, fmt.Sprintf("%s=%s", k, v))
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}
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stepEE := sc.NewExpressionEvaluator()
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for i, v := range cmd {
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cmd[i] = stepEE.Interpolate(v)
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}
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for i, v := range entrypoint {
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entrypoint[i] = stepEE.Interpolate(v)
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}
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envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TOOL_CACHE", "/opt/hostedtoolcache"))
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envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_OS", "Linux"))
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envList = append(envList, fmt.Sprintf("%s=%s", "RUNNER_TEMP", "/tmp"))
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binds, mounts := rc.GetBindsAndMounts()
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stepContainer := container.NewContainer(&container.NewContainerInput{
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Cmd: cmd,
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Entrypoint: entrypoint,
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WorkingDir: rc.Config.ContainerWorkdir(),
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Image: image,
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Username: rc.Config.Secrets["DOCKER_USERNAME"],
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Password: rc.Config.Secrets["DOCKER_PASSWORD"],
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Name: createContainerName(rc.jobContainerName(), step.ID),
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Env: envList,
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Mounts: mounts,
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NetworkMode: fmt.Sprintf("container:%s", rc.jobContainerName()),
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Binds: binds,
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Stdout: logWriter,
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Stderr: logWriter,
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Privileged: rc.Config.Privileged,
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UsernsMode: rc.Config.UsernsMode,
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Platform: rc.Config.ContainerArchitecture,
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})
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return stepContainer
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}
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func (sc *StepContext) runUsesContainer() common.Executor {
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rc := sc.RunContext
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step := sc.Step
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return func(ctx context.Context) error {
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image := strings.TrimPrefix(step.Uses, "docker://")
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cmd, err := shellquote.Split(sc.RunContext.NewExpressionEvaluator().Interpolate(step.With["args"]))
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if err != nil {
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return err
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}
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entrypoint := strings.Fields(step.With["entrypoint"])
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stepContainer := sc.newStepContainer(ctx, image, cmd, entrypoint)
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return common.NewPipelineExecutor(
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stepContainer.Pull(rc.Config.ForcePull),
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stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
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stepContainer.Create(rc.Config.ContainerCapAdd, rc.Config.ContainerCapDrop),
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stepContainer.Start(true),
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).Finally(
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stepContainer.Remove().IfBool(!rc.Config.ReuseContainers),
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)(ctx)
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}
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}
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//go:embed res/trampoline.js
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var trampoline []byte
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func (sc *StepContext) setupAction(actionDir string, actionPath string) common.Executor {
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return func(ctx context.Context) error {
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f, err := os.Open(filepath.Join(actionDir, actionPath, "action.yml"))
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if os.IsNotExist(err) {
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f, err = os.Open(filepath.Join(actionDir, actionPath, "action.yaml"))
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if err != nil {
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if _, err2 := os.Stat(filepath.Join(actionDir, actionPath, "Dockerfile")); err2 == nil {
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sc.Action = &model.Action{
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Name: "(Synthetic)",
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Runs: model.ActionRuns{
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Using: "docker",
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Image: "Dockerfile",
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},
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}
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log.Debugf("Using synthetic action %v for Dockerfile", sc.Action)
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return nil
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}
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if sc.Step.With != nil {
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if val, ok := sc.Step.With["args"]; ok {
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err2 := ioutil.WriteFile(filepath.Join(actionDir, actionPath, "trampoline.js"), trampoline, 0400)
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if err2 != nil {
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return err
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}
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sc.Action = &model.Action{
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Name: "(Synthetic)",
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Inputs: map[string]model.Input{
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"cwd": {
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Description: "(Actual working directory)",
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Required: false,
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Default: filepath.Join(actionDir, actionPath),
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},
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"command": {
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Description: "(Actual program)",
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Required: false,
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Default: val,
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},
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},
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Runs: model.ActionRuns{
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Using: "node12",
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Main: "trampoline.js",
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},
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}
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log.Debugf("Using synthetic action %v", sc.Action)
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return nil
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}
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}
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return err
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}
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} else if err != nil {
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return err
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}
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sc.Action, err = model.ReadAction(f)
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log.Debugf("Read action %v from '%s'", sc.Action, f.Name())
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return err
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}
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}
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func getOsSafeRelativePath(s, prefix string) string {
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actionName := strings.TrimPrefix(s, prefix)
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if runtime.GOOS == "windows" {
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actionName = strings.ReplaceAll(actionName, "\\", "/")
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}
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actionName = strings.TrimPrefix(actionName, "/")
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return actionName
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}
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func (sc *StepContext) getContainerActionPaths(step *model.Step, actionDir string, rc *RunContext) (string, string) {
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actionName := ""
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containerActionDir := "."
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if !rc.Config.BindWorkdir && step.Type() != model.StepTypeUsesActionRemote {
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actionName = getOsSafeRelativePath(actionDir, rc.Config.Workdir)
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containerActionDir = ActPath + "/actions/" + actionName
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} else if step.Type() == model.StepTypeUsesActionRemote {
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actionName = getOsSafeRelativePath(actionDir, rc.ActionCacheDir())
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containerActionDir = ActPath + "/actions/" + actionName
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} else if step.Type() == model.StepTypeUsesActionLocal {
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actionName = getOsSafeRelativePath(actionDir, rc.Config.Workdir)
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containerActionDir = ActPath + "/actions/" + actionName
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}
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if actionName == "" {
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actionName = filepath.Base(actionDir)
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if runtime.GOOS == "windows" {
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actionName = strings.ReplaceAll(actionName, "\\", "/")
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}
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}
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return actionName, containerActionDir
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}
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// nolint: gocyclo
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func (sc *StepContext) runAction(actionDir string, actionPath string) common.Executor {
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rc := sc.RunContext
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step := sc.Step
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return func(ctx context.Context) error {
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action := sc.Action
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log.Debugf("About to run action %v", action)
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sc.populateEnvsFromInput(action, rc)
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actionLocation := ""
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if actionPath != "" {
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actionLocation = path.Join(actionDir, actionPath)
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} else {
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actionLocation = actionDir
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}
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actionName, containerActionDir := sc.getContainerActionPaths(step, actionLocation, rc)
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sc.Env = mergeMaps(sc.Env, action.Runs.Env)
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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)
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maybeCopyToActionDir := func() error {
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if step.Type() != model.StepTypeUsesActionRemote {
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// If the workdir is bound to our repository then we don't need to copy the file
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if rc.Config.BindWorkdir {
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return nil
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}
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}
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err := removeGitIgnore(actionDir)
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if err != nil {
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return err
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}
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return rc.JobContainer.CopyDir(containerActionDir+"/", actionLocation+"/", rc.Config.UseGitIgnore)(ctx)
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}
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switch action.Runs.Using {
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case model.ActionRunsUsingNode12:
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err := maybeCopyToActionDir()
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if err != nil {
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return err
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}
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containerArgs := []string{"node", path.Join(containerActionDir, action.Runs.Main)}
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log.Debugf("executing remote job container: %s", containerArgs)
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return rc.execJobContainer(containerArgs, sc.Env)(ctx)
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case model.ActionRunsUsingDocker:
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return sc.execAsDocker(ctx, action, actionName, actionDir, actionPath, rc, step)
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case model.ActionRunsUsingComposite:
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return sc.execAsComposite(ctx, step, actionDir, rc, containerActionDir, actionName, actionPath, action, maybeCopyToActionDir)
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default:
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return fmt.Errorf(fmt.Sprintf("The runs.using key must be one of: %v, got %s", []string{
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model.ActionRunsUsingDocker,
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model.ActionRunsUsingNode12,
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model.ActionRunsUsingComposite,
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}, action.Runs.Using))
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}
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}
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}
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func (sc *StepContext) execAsDocker(ctx context.Context, action *model.Action, actionName string, actionDir string, actionPath string, rc *RunContext, step *model.Step) error {
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var prepImage common.Executor
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var image string
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if strings.HasPrefix(action.Runs.Image, "docker://") {
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image = strings.TrimPrefix(action.Runs.Image, "docker://")
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} else {
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image = fmt.Sprintf("%s:%s", regexp.MustCompile("[^a-zA-Z0-9]").ReplaceAllString(actionName, "-"), "latest")
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image = fmt.Sprintf("act-%s", strings.TrimLeft(image, "-"))
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image = strings.ToLower(image)
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contextDir := filepath.Join(actionDir, actionPath, action.Runs.Main)
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anyArchExists, err := container.ImageExistsLocally(ctx, image, "any")
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if err != nil {
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return err
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}
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correctArchExists, err := container.ImageExistsLocally(ctx, image, rc.Config.ContainerArchitecture)
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if err != nil {
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return err
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}
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if anyArchExists && !correctArchExists {
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wasRemoved, err := container.RemoveImage(ctx, image, true, true)
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if err != nil {
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return err
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}
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if !wasRemoved {
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return fmt.Errorf("failed to remove image '%s'", image)
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}
|
|
}
|
|
|
|
if !correctArchExists {
|
|
log.Debugf("image '%s' for architecture '%s' will be built from context '%s", image, rc.Config.ContainerArchitecture, contextDir)
|
|
prepImage = container.NewDockerBuildExecutor(container.NewDockerBuildExecutorInput{
|
|
ContextDir: contextDir,
|
|
ImageTag: image,
|
|
Platform: rc.Config.ContainerArchitecture,
|
|
})
|
|
} else {
|
|
log.Debugf("image '%s' for architecture '%s' already exists", image, rc.Config.ContainerArchitecture)
|
|
}
|
|
}
|
|
|
|
cmd, err := shellquote.Split(step.With["args"])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if len(cmd) == 0 {
|
|
cmd = action.Runs.Args
|
|
}
|
|
entrypoint := strings.Fields(step.With["entrypoint"])
|
|
if len(entrypoint) == 0 {
|
|
entrypoint = action.Runs.Entrypoint
|
|
}
|
|
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),
|
|
)(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
|
|
}
|
|
for outputName, output := range action.Outputs {
|
|
re := regexp.MustCompile(`\${{ steps\.([a-zA-Z_][a-zA-Z0-9_-]+)\.outputs\.([a-zA-Z_][a-zA-Z0-9_-]+) }}`)
|
|
matches := re.FindStringSubmatch(output.Value)
|
|
if len(matches) > 2 {
|
|
if sc.RunContext.OutputMappings == nil {
|
|
sc.RunContext.OutputMappings = make(map[MappableOutput]MappableOutput)
|
|
}
|
|
|
|
k := MappableOutput{StepID: matches[1], OutputName: matches[2]}
|
|
v := MappableOutput{StepID: step.ID, OutputName: outputName}
|
|
sc.RunContext.OutputMappings[k] = v
|
|
}
|
|
}
|
|
|
|
executors := make([]common.Executor, 0, len(action.Runs.Steps))
|
|
stepID := 0
|
|
for _, compositeStep := range action.Runs.Steps {
|
|
stepClone := compositeStep
|
|
// Take a copy of the run context structure (rc is a pointer)
|
|
// Then take the address of the new structure
|
|
rcCloneStr := *rc
|
|
rcClone := &rcCloneStr
|
|
if stepClone.ID == "" {
|
|
stepClone.ID = fmt.Sprintf("composite-%d", stepID)
|
|
stepID++
|
|
}
|
|
rcClone.CurrentStep = stepClone.ID
|
|
|
|
if err := compositeStep.Validate(); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Setup the outputs for the composite steps
|
|
if _, ok := rcClone.StepResults[stepClone.ID]; !ok {
|
|
rcClone.StepResults[stepClone.ID] = &stepResult{
|
|
Success: true,
|
|
Outputs: make(map[string]string),
|
|
}
|
|
}
|
|
|
|
if stepClone.Env == nil {
|
|
stepClone.Env = make(map[string]string)
|
|
}
|
|
actionPath := filepath.Join(containerActionDir, actionName)
|
|
|
|
env := stepClone.Environment()
|
|
env["GITHUB_ACTION_PATH"] = actionPath
|
|
stepClone.Run = strings.ReplaceAll(stepClone.Run, "${{ github.action_path }}", actionPath)
|
|
|
|
stepContext := StepContext{
|
|
RunContext: rcClone,
|
|
Step: &stepClone,
|
|
Env: mergeMaps(sc.Env, env),
|
|
}
|
|
|
|
// Interpolate the outer inputs into the composite step with items
|
|
exprEval := sc.NewExpressionEvaluator()
|
|
for k, v := range stepContext.Step.With {
|
|
if strings.Contains(v, "inputs") {
|
|
stepContext.Step.With[k] = exprEval.Interpolate(v)
|
|
}
|
|
}
|
|
|
|
executors = append(executors, stepContext.Executor())
|
|
}
|
|
return common.NewPipelineExecutor(executors...)(ctx)
|
|
}
|
|
|
|
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
|
|
}
|