Refactor ActionRunJob parsing into a reusable function (go-gitea#35623)

Use a helper method around the jobparser for parsing a single job
structure from an ActionRunJob

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

Author: ChristopherHX

models/actions/run_job.go

@@ -14,6 +14,7 @@ import (
 	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
 
+	"github.com/nektos/act/pkg/jobparser"
 	"xorm.io/builder"
 )
 
@@ -99,6 +100,24 @@ func (job *ActionRunJob) LoadAttributes(ctx context.Context) error {
 	return job.Run.LoadAttributes(ctx)
 }
 
+// ParseJob parses the job structure from the ActionRunJob.WorkflowPayload
+func (job *ActionRunJob) ParseJob() (*jobparser.Job, error) {
+	// job.WorkflowPayload is a SingleWorkflow created from an ActionRun's workflow, which exactly contains this job's YAML definition.
+	// Ideally it shouldn't be called "Workflow", it is just a job with global workflow fields + trigger
+	parsedWorkflows, err := jobparser.Parse(job.WorkflowPayload)
+	if err != nil {
+		return nil, fmt.Errorf("job %d single workflow: unable to parse: %w", job.ID, err)
+	} else if len(parsedWorkflows) != 1 {
+		return nil, fmt.Errorf("job %d single workflow: not single workflow", job.ID)
+	}
+	_, workflowJob := parsedWorkflows[0].Job()
+	if workflowJob == nil {
+		// it shouldn't happen, and since the callers don't check nil, so return an error instead of nil
+		return nil, util.ErrorWrap(util.ErrNotExist, "job %d single workflow: payload doesn't contain a job", job.ID)
+	}
+	return workflowJob, nil
+}
+
 func GetRunJobByID(ctx context.Context, id int64) (*ActionRunJob, error) {
 	var job ActionRunJob
 	has, err := db.GetEngine(ctx).Where("id=?", id).Get(&job)

models/actions/task.go

@@ -21,7 +21,6 @@ import (
 
 	runnerv1 "code.gitea.io/actions-proto-go/runner/v1"
 	lru "github.com/hashicorp/golang-lru/v2"
-	"github.com/nektos/act/pkg/jobparser"
 	"google.golang.org/protobuf/types/known/timestamppb"
 	"xorm.io/builder"
 )
@@ -278,13 +277,10 @@ func CreateTaskForRunner(ctx context.Context, runner *ActionRunner) (*ActionTask
 		return nil, false, err
 	}
 
-	parsedWorkflows, err := jobparser.Parse(job.WorkflowPayload)
+	workflowJob, err := job.ParseJob()
 	if err != nil {
-		return nil, false, fmt.Errorf("parse workflow of job %d: %w", job.ID, err)
-	} else if len(parsedWorkflows) != 1 {
-		return nil, false, fmt.Errorf("workflow of job %d: not single workflow", job.ID)
+		return nil, false, fmt.Errorf("load job %d: %w", job.ID, err)
 	}
-	_, workflowJob := parsedWorkflows[0].Job()
 
 	if _, err := e.Insert(task); err != nil {
 		return nil, false, err

services/actions/concurrency.go

@@ -5,7 +5,6 @@ package actions
 
 import (
 	"context"
-	"errors"
 	"fmt"
 
 	actions_model "code.gitea.io/gitea/models/actions"
@@ -91,17 +90,12 @@ func EvaluateJobConcurrencyFillModel(ctx context.Context, run *actions_model.Act
 		return fmt.Errorf("get inputs: %w", err)
 	}
 
-	// singleWorkflows is created from an ActionJob, which always contains exactly a single job's YAML definition.
-	// Ideally it shouldn't be called "Workflow", it is just a job with global workflow fields + trigger
-	singleWorkflows, err := jobparser.Parse(actionRunJob.WorkflowPayload)
+	workflowJob, err := actionRunJob.ParseJob()
 	if err != nil {
-		return fmt.Errorf("parse single workflow: %w", err)
-	} else if len(singleWorkflows) != 1 {
-		return errors.New("not single workflow")
+		return fmt.Errorf("load job %d: %w", actionRunJob.ID, err)
 	}
-	_, singleWorkflowJob := singleWorkflows[0].Job()
 
-	actionRunJob.ConcurrencyGroup, actionRunJob.ConcurrencyCancel, err = jobparser.EvaluateConcurrency(&rawConcurrency, actionRunJob.JobID, singleWorkflowJob, actionsJobCtx, jobResults, vars, inputs)
+	actionRunJob.ConcurrencyGroup, actionRunJob.ConcurrencyCancel, err = jobparser.EvaluateConcurrency(&rawConcurrency, actionRunJob.JobID, workflowJob, actionsJobCtx, jobResults, vars, inputs)
 	if err != nil {
 		return fmt.Errorf("evaluate concurrency: %w", err)
 	}

services/actions/job_emitter.go

@@ -18,7 +18,6 @@ import (
 	"code.gitea.io/gitea/modules/util"
 	notify_service "code.gitea.io/gitea/services/notify"
 
-	"github.com/nektos/act/pkg/jobparser"
 	"xorm.io/builder"
 )
 
@@ -305,9 +304,9 @@ func (r *jobStatusResolver) resolveCheckNeeds(id int64) (allDone, allSucceed boo
 }
 
 func (r *jobStatusResolver) resolveJobHasIfCondition(actionRunJob *actions_model.ActionRunJob) (hasIf bool) {
-	if wfJobs, _ := jobparser.Parse(actionRunJob.WorkflowPayload); len(wfJobs) == 1 {
-		_, wfJob := wfJobs[0].Job()
-		hasIf = len(wfJob.If.Value) > 0
+	// FIXME evaluate this on the server side
+	if job, err := actionRunJob.ParseJob(); err == nil {
+		return len(job.If.Value) > 0
 	}
 	return hasIf
 }