feat: expose workflow runtime through HTTP and Go SDK
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@@ -17,7 +17,7 @@ import (
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)
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// WorkflowInstanceStore 以应用额度锁串行受理，在一个事务内建立全部归属及初始工作。
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// 当前为内部存储适配层，公共HTTP和SDK在消费运行器接通后开放。
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// 公共HTTP与内部运行器复用同一套固定版本、幂等与事务规则。
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type WorkflowInstanceStore struct{ *TaskStore }
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func NewWorkflowInstanceStore(db *sql.DB) *WorkflowInstanceStore {
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@@ -226,67 +226,77 @@ func (s *WorkflowInstanceStore) Get(ctx context.Context, t auth.Token, id core.I
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})
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return out, err
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}
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// readWorkflowForQuery 固定定义授权全部队列后再锁实例，保持与运行器相同的父子锁顺序。
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func readWorkflowForQuery(ctx context.Context, tx *sql.Tx, ns, id core.ID, p auth.Permissions) (instance.View, core.ID, definition.VersionView, error) {
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v, gate, err := readWorkflowInstance(ctx, tx, ns, id, false)
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var version definition.VersionView
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if err != nil {
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return v, gate, version, err
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}
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version, err = instanceVersion(ctx, tx, v)
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if err != nil {
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return v, gate, version, err
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}
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if err = authorizeWorkflowQueues(ctx, tx, ns, p, version.Analysis.Queues); err != nil {
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return v, gate, version, err
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}
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v, gate, err = readWorkflowInstance(ctx, tx, ns, id, true)
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return v, gate, version, err
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}
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func (s *WorkflowInstanceStore) Steps(ctx context.Context, t auth.Token, id core.ID) (instance.StepsView, error) {
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out := instance.StepsView{InstanceID: id, Steps: []instance.StepView{}}
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err := s.transaction(ctx, t, instance.ReadAction, func(tx *sql.Tx, p auth.Permissions) error {
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// 先核对队列，后锁实例；未来运行器遵守应用→队列→实例，读取不得逆序锁队列。
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v, _, err := readWorkflowInstance(ctx, tx, t.NamespaceID, id, false)
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if err != nil {
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return err
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}
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version, err := instanceVersion(ctx, tx, v)
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if err != nil {
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return err
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}
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if err := authorizeWorkflowQueues(ctx, tx, t.NamespaceID, p, version.Analysis.Queues); err != nil {
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return err
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}
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var gate core.ID
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v, gate, err = readWorkflowInstance(ctx, tx, t.NamespaceID, id, true)
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v, gate, version, err := readWorkflowForQuery(ctx, tx, t.NamespaceID, id, p)
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if err != nil {
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return err
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}
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out.Revision = v.Revision
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program, err := engine.Compile(version.Specification)
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if err != nil {
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return err
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}
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rows, err := tx.QueryContext(ctx, "SELECT s.id,s.`key`,s.kind,s.state,s.revision,s.current_activation_id,a.task_id,a.id,a.state,task.id,task.queue_id FROM weave_steps s LEFT JOIN weave_activations a ON a.namespace_id=s.namespace_id AND a.id=s.current_activation_id AND a.workflow_id=s.workflow_id AND a.step_id=s.id LEFT JOIN pulse_tasks task ON task.namespace_id=s.namespace_id AND task.id=a.task_id AND task.owner_kind='workflow_activation' AND task.owner_id=a.id AND task.gate_id=? WHERE s.namespace_id=? AND s.workflow_id=? AND s.`key`<>? ORDER BY s.`key` LIMIT 129", gate, t.NamespaceID, id, workflowRootKey)
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if err != nil {
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return err
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}
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defer rows.Close()
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for rows.Next() {
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var step instance.StepView
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var activation *core.ID
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var task, queue *core.ID
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var state sql.NullString
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if err := rows.Scan(&step.ID, &step.Key, &step.Kind, &step.State, &step.Revision, &step.ActivationID, &step.TaskID, &activation, &state, &task, &queue); err != nil {
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return err
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}
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node, ok := program.Step(step.Key)
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if !ok || node.Kind != string(step.Kind) {
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return errors.New("workflow step definition mismatch")
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}
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inactive := step.State == "BLOCKED" || step.State == "SKIPPED"
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if inactive && step.ActivationID != nil || !inactive && (step.ActivationID == nil || activation == nil || *activation != *step.ActivationID || state.String != string(step.State)) {
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return errors.New("workflow current activation mismatch")
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}
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if !inactive && (step.Kind == "TASK") != (step.TaskID != nil) {
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return errors.New("workflow direct task ownership mismatch")
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}
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if step.TaskID != nil && (task == nil || queue == nil || *task != *step.TaskID || node.Task == nil || *queue != node.Task.QueueID) {
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return errors.New("workflow task association invalid")
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}
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out.Steps = append(out.Steps, step)
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}
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if err := rows.Err(); err != nil {
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return err
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}
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if len(out.Steps) != int(version.Analysis.Steps) {
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return errors.New("workflow step set incomplete")
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}
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return nil
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out.Steps, err = readWorkflowStepViews(ctx, tx, t.NamespaceID, id, gate, version, "")
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return err
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})
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return out, err
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}
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func readWorkflowStepViews(ctx context.Context, tx *sql.Tx, ns, id, gate core.ID, version definition.VersionView, key string) ([]instance.StepView, error) {
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items := []instance.StepView{}
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program, err := engine.Compile(version.Specification)
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if err != nil {
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return nil, err
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}
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rows, err := tx.QueryContext(ctx, "SELECT s.id,s.`key`,s.kind,s.state,s.revision,s.current_activation_id,a.task_id,COALESCE(a.sequence,0),a.id,a.state,task.id,task.queue_id FROM weave_steps s LEFT JOIN weave_activations a ON a.namespace_id=s.namespace_id AND a.id=s.current_activation_id AND a.workflow_id=s.workflow_id AND a.step_id=s.id LEFT JOIN pulse_tasks task ON task.namespace_id=s.namespace_id AND task.id=a.task_id AND task.owner_kind='workflow_activation' AND task.owner_id=a.id AND task.gate_id=? WHERE s.namespace_id=? AND s.workflow_id=? AND s.`key`<>? AND (?='' OR s.`key`=?) ORDER BY s.`key` LIMIT 129", gate, ns, id, workflowRootKey, key, key)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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for rows.Next() {
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var step instance.StepView
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var activation *core.ID
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var task, queue *core.ID
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var state sql.NullString
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if err := rows.Scan(&step.ID, &step.Key, &step.Kind, &step.State, &step.Revision, &step.ActivationID, &step.TaskID, &step.ActivationSequence, &activation, &state, &task, &queue); err != nil {
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return nil, err
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}
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node, ok := program.Step(step.Key)
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if !ok || node.Kind != string(step.Kind) {
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return nil, errors.New("workflow step definition mismatch")
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}
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inactive := step.State == "BLOCKED" || step.State == "SKIPPED"
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if inactive && step.ActivationID != nil || !inactive && (step.ActivationSequence == 0 || step.ActivationID == nil || activation == nil || *activation != *step.ActivationID || state.String != string(step.State)) {
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return nil, errors.New("workflow current activation mismatch")
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}
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if !inactive && (step.Kind == "TASK") != (step.TaskID != nil) {
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return nil, errors.New("workflow direct task ownership mismatch")
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}
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if step.TaskID != nil && (task == nil || queue == nil || *task != *step.TaskID || node.Task == nil || *queue != node.Task.QueueID) {
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return nil, errors.New("workflow task association invalid")
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}
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items = append(items, step)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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if key == "" && len(items) != int(version.Analysis.Steps) {
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return nil, errors.New("workflow step set incomplete")
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}
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return items, nil
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}
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