Refactoring run method

impl/runner.go

@@ -137,12 +137,12 @@ func (wr *workflowRunnerImpl) Run(input interface{}) (output interface{}, err er
 	wr.RunnerCtx.SetInput(input)
 	// Run tasks sequentially
 	wr.RunnerCtx.SetStatus(ctx.RunningStatus)
-	doRunner, err := NewDoTaskRunner(wr.Workflow.Do, wr)
+	doRunner, err := NewDoTaskRunner(wr.Workflow.Do, wr.GetWorkflowDef())
 	if err != nil {
 		return nil, err
 	}
 	wr.RunnerCtx.SetStartedAt(time.Now())
-	output, err = doRunner.Run(wr.RunnerCtx.GetInput())
+	output, err = doRunner.Run(wr.RunnerCtx.GetInput(), wr)
 	if err != nil {
 		return nil, err
 	}

impl/task_runner.go

@@ -28,7 +28,7 @@ var _ TaskRunner = &ForTaskRunner{}
 var _ TaskRunner = &DoTaskRunner{}
 
 type TaskRunner interface {
-	Run(input interface{}) (interface{}, error)
+	Run(input interface{}, taskSupport TaskSupport) (interface{}, error)
 	GetTaskName() string
 }
 

impl/task_runner_call_http.go

@@ -0,0 +1,44 @@
+// Copyright 2025 The Serverless Workflow Specification Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package impl
+
+import (
+	"fmt"
+
+	"github.com/serverlessworkflow/sdk-go/v3/model"
+)
+
+type CallHTTPTaskRunner struct {
+	TaskName string
+}
+
+func NewCallHttpRunner(taskName string, task *model.CallHTTP) (taskRunner *CallHTTPTaskRunner, err error) {
+	if task == nil {
+		err = model.NewErrValidation(fmt.Errorf("invalid For task %s", taskName), taskName)
+	} else {
+		taskRunner = new(CallHTTPTaskRunner)
+		taskRunner.TaskName = taskName
+	}
+	return
+}
+
+func (f *CallHTTPTaskRunner) Run(input interface{}, taskSupport TaskSupport) (interface{}, error) {
+	return input, nil
+
+}
+
+func (f *CallHTTPTaskRunner) GetTaskName() string {
+	return f.TaskName
+}

impl/task_runner_do.go

@@ -23,110 +23,112 @@ import (
 )
 
 // NewTaskRunner creates a TaskRunner instance based on the task type.
-func NewTaskRunner(taskName string, task model.Task, taskSupport TaskSupport) (TaskRunner, error) {
+func NewTaskRunner(taskName string, task model.Task, workflowDef *model.Workflow) (TaskRunner, error) {
 	switch t := task.(type) {
 	case *model.SetTask:
-		return NewSetTaskRunner(taskName, t, taskSupport)
+		return NewSetTaskRunner(taskName, t)
 	case *model.RaiseTask:
-		return NewRaiseTaskRunner(taskName, t, taskSupport)
+		return NewRaiseTaskRunner(taskName, t, workflowDef)
 	case *model.DoTask:
-		return NewDoTaskRunner(t.Do, taskSupport)
+		return NewDoTaskRunner(t.Do, workflowDef)
 	case *model.ForTask:
-		return NewForTaskRunner(taskName, t, taskSupport)
+		return NewForTaskRunner(taskName, t, workflowDef)
+	case *model.CallHTTP:
+		return NewCallHttpRunner(taskName, t)
 	default:
 		return nil, fmt.Errorf("unsupported task type '%T' for task '%s'", t, taskName)
 	}
 }
 
-func NewDoTaskRunner(taskList *model.TaskList, taskSupport TaskSupport) (*DoTaskRunner, error) {
+func NewDoTaskRunner(taskList *model.TaskList, workflowDef *model.Workflow) (*DoTaskRunner, error) {
 	return &DoTaskRunner{
 		TaskList:    taskList,
-		TaskSupport: taskSupport,
+		WorkflowDef: workflowDef,
 	}, nil
 }
 
 type DoTaskRunner struct {
 	TaskList    *model.TaskList
-	TaskSupport TaskSupport
+	WorkflowDef *model.Workflow
 }
 
-func (d *DoTaskRunner) Run(input interface{}) (output interface{}, err error) {
+func (d *DoTaskRunner) Run(input interface{}, taskSupport TaskSupport) (output interface{}, err error) {
 	if d.TaskList == nil {
 		return input, nil
 	}
-	return d.runTasks(input, d.TaskList)
+	return d.runTasks(input, taskSupport)
 }
 
 func (d *DoTaskRunner) GetTaskName() string {
 	return ""
 }
 
 // runTasks runs all defined tasks sequentially.
-func (d *DoTaskRunner) runTasks(input interface{}, tasks *model.TaskList) (output interface{}, err error) {
+func (d *DoTaskRunner) runTasks(input interface{}, taskSupport TaskSupport) (output interface{}, err error) {
 	output = input
-	if tasks == nil {
+	if d.TaskList == nil {
 		return output, nil
 	}
 
 	idx := 0
-	currentTask := (*tasks)[idx]
+	currentTask := (*d.TaskList)[idx]
 
 	for currentTask != nil {
-		if err = d.TaskSupport.SetTaskDef(currentTask); err != nil {
+		if err = taskSupport.SetTaskDef(currentTask); err != nil {
 			return nil, err
 		}
-		if err = d.TaskSupport.SetTaskReferenceFromName(currentTask.Key); err != nil {
+		if err = taskSupport.SetTaskReferenceFromName(currentTask.Key); err != nil {
 			return nil, err
 		}
 
-		if shouldRun, err := d.shouldRunTask(input, currentTask); err != nil {
+		if shouldRun, err := d.shouldRunTask(input, taskSupport, currentTask); err != nil {
 			return output, err
 		} else if !shouldRun {
-			idx, currentTask = tasks.Next(idx)
+			idx, currentTask = d.TaskList.Next(idx)
 			continue
 		}
 
-		d.TaskSupport.SetTaskStatus(currentTask.Key, ctx.PendingStatus)
+		taskSupport.SetTaskStatus(currentTask.Key, ctx.PendingStatus)
 
 		// Check if this task is a SwitchTask and handle it
 		if switchTask, ok := currentTask.Task.(*model.SwitchTask); ok {
-			flowDirective, err := d.evaluateSwitchTask(input, currentTask.Key, switchTask)
+			flowDirective, err := d.evaluateSwitchTask(input, taskSupport, currentTask.Key, switchTask)
 			if err != nil {
-				d.TaskSupport.SetTaskStatus(currentTask.Key, ctx.FaultedStatus)
+				taskSupport.SetTaskStatus(currentTask.Key, ctx.FaultedStatus)
 				return output, err
 			}
-			d.TaskSupport.SetTaskStatus(currentTask.Key, ctx.CompletedStatus)
+			taskSupport.SetTaskStatus(currentTask.Key, ctx.CompletedStatus)
 
 			// Process FlowDirective: update idx/currentTask accordingly
-			idx, currentTask = tasks.KeyAndIndex(flowDirective.Value)
+			idx, currentTask = d.TaskList.KeyAndIndex(flowDirective.Value)
 			if currentTask == nil {
 				return nil, fmt.Errorf("flow directive target '%s' not found", flowDirective.Value)
 			}
 			continue
 		}
 
-		runner, err := NewTaskRunner(currentTask.Key, currentTask.Task, d.TaskSupport)
+		runner, err := NewTaskRunner(currentTask.Key, currentTask.Task, taskSupport.GetWorkflowDef())
 		if err != nil {
 			return output, err
 		}
 
-		d.TaskSupport.SetTaskStatus(currentTask.Key, ctx.RunningStatus)
-		if output, err = d.runTask(input, runner, currentTask.Task.GetBase()); err != nil {
-			d.TaskSupport.SetTaskStatus(currentTask.Key, ctx.FaultedStatus)
+		taskSupport.SetTaskStatus(currentTask.Key, ctx.RunningStatus)
+		if output, err = d.runTask(input, taskSupport, runner, currentTask.Task.GetBase()); err != nil {
+			taskSupport.SetTaskStatus(currentTask.Key, ctx.FaultedStatus)
 			return output, err
 		}
 
-		d.TaskSupport.SetTaskStatus(currentTask.Key, ctx.CompletedStatus)
+		taskSupport.SetTaskStatus(currentTask.Key, ctx.CompletedStatus)
 		input = deepCloneValue(output)
-		idx, currentTask = tasks.Next(idx)
+		idx, currentTask = d.TaskList.Next(idx)
 	}
 
 	return output, nil
 }
 
-func (d *DoTaskRunner) shouldRunTask(input interface{}, task *model.TaskItem) (bool, error) {
+func (d *DoTaskRunner) shouldRunTask(input interface{}, taskSupport TaskSupport, task *model.TaskItem) (bool, error) {
 	if task.GetBase().If != nil {
-		output, err := traverseAndEvaluateBool(task.GetBase().If.String(), input, d.TaskSupport.GetContext())
+		output, err := traverseAndEvaluateBool(task.GetBase().If.String(), input, taskSupport.GetContext())
 		if err != nil {
 			return false, model.NewErrExpression(err, task.Key)
 		}
@@ -135,15 +137,15 @@ func (d *DoTaskRunner) shouldRunTask(input interface{}, task *model.TaskItem) (b
 	return true, nil
 }
 
-func (d *DoTaskRunner) evaluateSwitchTask(input interface{}, taskKey string, switchTask *model.SwitchTask) (*model.FlowDirective, error) {
+func (d *DoTaskRunner) evaluateSwitchTask(input interface{}, taskSupport TaskSupport, taskKey string, switchTask *model.SwitchTask) (*model.FlowDirective, error) {
 	var defaultThen *model.FlowDirective
 	for _, switchItem := range switchTask.Switch {
 		for _, switchCase := range switchItem {
 			if switchCase.When == nil {
 				defaultThen = switchCase.Then
 				continue
 			}
-			result, err := traverseAndEvaluateBool(model.NormalizeExpr(switchCase.When.String()), input, d.TaskSupport.GetContext())
+			result, err := traverseAndEvaluateBool(model.NormalizeExpr(switchCase.When.String()), input, taskSupport.GetContext())
 			if err != nil {
 				return nil, model.NewErrExpression(err, taskKey)
 			}
@@ -162,39 +164,39 @@ func (d *DoTaskRunner) evaluateSwitchTask(input interface{}, taskKey string, swi
 }
 
 // runTask executes an individual task.
-func (d *DoTaskRunner) runTask(input interface{}, runner TaskRunner, task *model.TaskBase) (output interface{}, err error) {
+func (d *DoTaskRunner) runTask(input interface{}, taskSupport TaskSupport, runner TaskRunner, task *model.TaskBase) (output interface{}, err error) {
 	taskName := runner.GetTaskName()
 
-	d.TaskSupport.SetTaskStartedAt(time.Now())
-	d.TaskSupport.SetTaskRawInput(input)
-	d.TaskSupport.SetTaskName(taskName)
+	taskSupport.SetTaskStartedAt(time.Now())
+	taskSupport.SetTaskRawInput(input)
+	taskSupport.SetTaskName(taskName)
 
 	if task.Input != nil {
-		if input, err = d.processTaskInput(task, input, taskName); err != nil {
+		if input, err = d.processTaskInput(task, input, taskSupport, taskName); err != nil {
 			return nil, err
 		}
 	}
 
-	output, err = runner.Run(input)
+	output, err = runner.Run(input, taskSupport)
 	if err != nil {
 		return nil, err
 	}
 
-	d.TaskSupport.SetTaskRawOutput(output)
+	taskSupport.SetTaskRawOutput(output)
 
-	if output, err = d.processTaskOutput(task, output, taskName); err != nil {
+	if output, err = d.processTaskOutput(task, output, taskSupport, taskName); err != nil {
 		return nil, err
 	}
 
-	if err = d.processTaskExport(task, output, taskName); err != nil {
+	if err = d.processTaskExport(task, output, taskSupport, taskName); err != nil {
 		return nil, err
 	}
 
 	return output, nil
 }
 
 // processTaskInput processes task input validation and transformation.
-func (d *DoTaskRunner) processTaskInput(task *model.TaskBase, taskInput interface{}, taskName string) (output interface{}, err error) {
+func (d *DoTaskRunner) processTaskInput(task *model.TaskBase, taskInput interface{}, taskSupport TaskSupport, taskName string) (output interface{}, err error) {
 	if task.Input == nil {
 		return taskInput, nil
 	}
@@ -203,20 +205,20 @@ func (d *DoTaskRunner) processTaskInput(task *model.TaskBase, taskInput interfac
 		return nil, err
 	}
 
-	if output, err = traverseAndEvaluate(task.Input.From, taskInput, taskName, d.TaskSupport.GetContext()); err != nil {
+	if output, err = traverseAndEvaluate(task.Input.From, taskInput, taskName, taskSupport.GetContext()); err != nil {
 		return nil, err
 	}
 
 	return output, nil
 }
 
 // processTaskOutput processes task output validation and transformation.
-func (d *DoTaskRunner) processTaskOutput(task *model.TaskBase, taskOutput interface{}, taskName string) (output interface{}, err error) {
+func (d *DoTaskRunner) processTaskOutput(task *model.TaskBase, taskOutput interface{}, taskSupport TaskSupport, taskName string) (output interface{}, err error) {
 	if task.Output == nil {
 		return taskOutput, nil
 	}
 
-	if output, err = traverseAndEvaluate(task.Output.As, taskOutput, taskName, d.TaskSupport.GetContext()); err != nil {
+	if output, err = traverseAndEvaluate(task.Output.As, taskOutput, taskName, taskSupport.GetContext()); err != nil {
 		return nil, err
 	}
 
@@ -227,12 +229,12 @@ func (d *DoTaskRunner) processTaskOutput(task *model.TaskBase, taskOutput interf
 	return output, nil
 }
 
-func (d *DoTaskRunner) processTaskExport(task *model.TaskBase, taskOutput interface{}, taskName string) (err error) {
+func (d *DoTaskRunner) processTaskExport(task *model.TaskBase, taskOutput interface{}, taskSupport TaskSupport, taskName string) (err error) {
 	if task.Export == nil {
 		return nil
 	}
 
-	output, err := traverseAndEvaluate(task.Export.As, taskOutput, taskName, d.TaskSupport.GetContext())
+	output, err := traverseAndEvaluate(task.Export.As, taskOutput, taskName, taskSupport.GetContext())
 	if err != nil {
 		return err
 	}
@@ -241,7 +243,7 @@ func (d *DoTaskRunner) processTaskExport(task *model.TaskBase, taskOutput interf
 		return nil
 	}
 
-	d.TaskSupport.SetWorkflowInstanceCtx(output)
+	taskSupport.SetWorkflowInstanceCtx(output)
 
 	return nil
 }