212 lines
11 KiB
Go
212 lines
11 KiB
Go
package mysql
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import (
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"bytes"
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"context"
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"database/sql"
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"errors"
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"time"
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"git.yuntuo.hk/k2safe/orbit/internal/fault"
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"git.yuntuo.hk/k2safe/orbit/internal/jsonvalue"
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core "git.yuntuo.hk/k2safe/orbit/model"
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"git.yuntuo.hk/k2safe/orbit/pulse/service"
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"git.yuntuo.hk/k2safe/orbit/weave/definition"
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"git.yuntuo.hk/k2safe/orbit/weave/engine"
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weave "git.yuntuo.hk/k2safe/orbit/weave/model"
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)
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func (r *WorkflowRuntime) advancePoll(ctx context.Context, tx *sql.Tx, g *workflowGraph, row *workflowStep, c workflowCandidate, activated time.Time, allow bool, now time.Time) (bool, error) {
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var p weave.PollState
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err := tx.QueryRowContext(ctx, `SELECT id,revision,max_rounds,used_rounds,max_attempts_per_round,interval_ms,deadline_at,next_poll_at,current_task_id,resolved_at FROM weave_poll_states WHERE namespace_id=? AND workflow_id=? AND activation_id=? FOR UPDATE`, c.ns, c.workflow, row.view.ActivationID).Scan(&p.ID, &p.Revision, &p.MaxRounds, &p.UsedRounds, &p.MaxAttemptsPerRound, &p.IntervalMS, &p.DeadlineAt, &p.NextPollAt, &p.CurrentTaskID, &p.ResolvedAt)
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if err != nil {
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return false, err
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}
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node, _ := g.program.Step(row.view.Key)
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policy := node.Poll
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if policy == nil || p.MaxRounds != policy.MaxRounds || p.MaxAttemptsPerRound != policy.Task.Retry.MaxAttempts || p.IntervalMS != policy.IntervalMS || p.UsedRounds < 1 || !p.DeadlineAt.Equal(minimumTime(g.view.DeadlineAt, activated.Add(time.Duration(policy.TimeoutMS)*time.Millisecond))) {
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return false, errors.New("workflow poll policy mismatch")
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}
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if p.ResolvedAt != nil {
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return false, errors.New("unsettled poll step has resolved budget")
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}
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var count, minRound, maxRound uint32
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if err := tx.QueryRowContext(ctx, "SELECT COUNT(*),COALESCE(MIN(`round`),0),COALESCE(MAX(`round`),0) FROM weave_poll_rounds WHERE namespace_id=? AND workflow_id=? AND activation_id=?", c.ns, c.workflow, row.view.ActivationID).Scan(&count, &minRound, &maxRound); err != nil {
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return false, err
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}
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if count != p.UsedRounds || minRound != 1 || maxRound != p.UsedRounds {
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return false, errors.New("workflow poll rounds incomplete")
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}
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var lastTask core.ID
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if err := tx.QueryRowContext(ctx, "SELECT task_id FROM weave_poll_rounds WHERE namespace_id=? AND workflow_id=? AND activation_id=? AND `round`=?", c.ns, c.workflow, row.view.ActivationID, p.UsedRounds).Scan(&lastTask); err != nil {
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return false, err
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}
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if p.CurrentTaskID != nil {
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if *p.CurrentTaskID != lastTask || p.NextPollAt != nil || row.view.State != weave.StepActive {
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return false, errors.New("workflow in-flight poll mismatch")
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}
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if err := validatePollTaskOwner(ctx, tx, g, row, lastTask); err != nil {
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return false, err
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}
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if now.Before(p.DeadlineAt) {
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return false, saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, p.DeadlineAt)
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}
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task, err := readTask(ctx, tx, c.ns, lastTask, false)
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if err != nil {
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return false, err
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}
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if task.QueueID != policy.Task.QueueID {
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return false, errors.New("workflow in-flight poll queue mismatch")
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}
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if task.State.Terminal() || task.State == "NEEDS_REVIEW" {
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// 原结果已可靠落库时，先让Inbox按事件时间裁决，不能用扫描器的当前时间覆盖它。
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var available time.Time
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err := tx.QueryRowContext(ctx, `SELECT available_at FROM weave_inbox WHERE namespace_id=? AND workflow_id=? AND source_task_id=? AND source_activation_id=? AND state='PENDING' ORDER BY source_revision DESC LIMIT 1`, c.ns, c.workflow, lastTask, row.view.ActivationID).Scan(&available)
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if err != nil {
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return false, err
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}
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if available.Before(now.Add(time.Second)) {
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available = now.Add(time.Second)
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}
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return false, saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, available)
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}
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// 到期但仍在途时先关闭门控，保留当前轮次和ACTIVE步骤继续接收Pulse结清结果。
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changed := g.view.State != weave.InstanceNeedsReview
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if changed {
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if err := holdWorkflow(ctx, tx, g, weave.InstanceNeedsReview, "POLL_INFLIGHT_DEADLINE", now); err != nil {
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return false, err
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}
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if err := r.audit(ctx, tx, g, c.id, "POLL_INFLIGHT_DEADLINE", now); err != nil {
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return false, err
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}
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}
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return changed, saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, now.Add(time.Second))
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}
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if row.view.State != weave.StepWaiting || p.NextPollAt == nil {
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return false, errors.New("workflow poll continuation missing")
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}
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if !now.Before(p.DeadlineAt) || p.UsedRounds >= p.MaxRounds {
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reason := "POLL_DEADLINE"
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if p.UsedRounds >= p.MaxRounds {
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reason = "POLL_ROUNDS_EXHAUSTED"
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}
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if _, err := tx.ExecContext(ctx, `UPDATE weave_poll_states SET resolved_at=?,next_poll_at=NULL,revision=revision+1,updated_at=? WHERE namespace_id=? AND id=?`, now, now, c.ns, p.ID); err != nil {
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return false, err
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}
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if _, err := tx.ExecContext(ctx, `UPDATE weave_waits SET state='EXPIRED',resolved_at=?,revision=revision+1,updated_at=? WHERE namespace_id=? AND workflow_id=? AND activation_id=? AND state='WAITING'`, now, now, c.ns, c.workflow, row.view.ActivationID); err != nil {
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return false, err
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}
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if err := saveWorkflowResultStep(ctx, tx, g, row, weave.StepNeedsReview, nil, now); err != nil {
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return false, err
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}
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if err := deleteWorkflowClock(ctx, tx, g, row); err != nil {
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return false, err
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}
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if err := holdWorkflow(ctx, tx, g, weave.InstanceNeedsReview, reason, now); err != nil {
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return false, err
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}
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return true, r.audit(ctx, tx, g, c.id, reason, now)
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}
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if now.Before(*p.NextPollAt) {
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return false, saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, *p.NextPollAt)
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}
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if !allow {
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return false, saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, minimumTime(p.DeadlineAt, now.Add(time.Second)))
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}
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round, err := p.NextRound(now)
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if err != nil {
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return false, err
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}
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// 只有上一轮成功查询并已分类为PENDING才可以消耗新轮次，不能用时间推进绕过失败预算。
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var disposition string
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if err := tx.QueryRowContext(ctx, `SELECT error_code FROM weave_inbox WHERE namespace_id=? AND workflow_id=? AND source_task_id=? AND source_activation_id=? AND state='PROCESSED' ORDER BY source_revision DESC LIMIT 1`, c.ns, c.workflow, lastTask, row.view.ActivationID).Scan(&disposition); err != nil {
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return false, err
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}
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if disposition != "POLL_PENDING" {
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return false, errors.New("poll previous round was not pending")
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}
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in, err := pollTaskInput(ctx, tx, g, row, policy.Task)
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if err != nil {
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return false, err
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}
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taskID, err := core.NewID()
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if err != nil {
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return false, err
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}
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task, err := insertAcceptedTaskUntil(ctx, tx, c.ns, taskID, in, nil, &p.DeadlineAt)
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if errors.Is(err, fault.QueueFull) || errors.Is(err, fault.ApplicationFull) {
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return false, saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, minimumTime(p.DeadlineAt, now.Add(time.Second)))
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}
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if err != nil {
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return false, err
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}
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res, err := tx.ExecContext(ctx, `UPDATE pulse_tasks SET owner_kind=?,owner_id=?,gate_id=? WHERE namespace_id=? AND id=? AND owner_kind IS NULL`, engine.TaskOwnerKind, row.view.ActivationID, g.gate, c.ns, taskID)
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if err := exactlyOne(res, err); err != nil {
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return false, err
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}
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roundID, err := core.NewID()
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if err != nil {
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return false, err
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}
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if _, err := tx.ExecContext(ctx, "INSERT INTO weave_poll_rounds(namespace_id,id,workflow_id,activation_id,`round`,task_id) VALUES (?,?,?,?,?,?)", c.ns, roundID, c.workflow, row.view.ActivationID, round, taskID); err != nil {
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return false, err
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}
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res, err = tx.ExecContext(ctx, `UPDATE weave_poll_states SET used_rounds=?,current_task_id=?,next_poll_at=NULL,revision=revision+1,updated_at=? WHERE namespace_id=? AND id=? AND revision=? AND current_task_id IS NULL`, round, taskID, now, c.ns, p.ID, p.Revision)
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if err := exactlyOne(res, err); err != nil {
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return false, err
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}
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if err := saveWorkflowResultStep(ctx, tx, g, row, weave.StepActive, nil, now); err != nil {
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return false, err
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}
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if err := saveWorkflowClock(ctx, tx, g, row, "POLL", row.view.Revision, p.DeadlineAt); err != nil {
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return false, err
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}
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if err := emitEvent(ctx, tx, c.ns, taskID, task.Revision, "task", "task.accepted", map[string]any{"task_id": taskID, "state": task.State, "workflow_id": c.workflow, "activation_id": row.view.ActivationID, "round": round}); err != nil {
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return false, err
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}
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// 新查询已持久化，实例从纯等待恢复RUNNING；组合推进仍受同一个32步预算。
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if err := r.progress(ctx, tx, g, allow, now); err != nil {
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return false, err
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}
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return true, r.audit(ctx, tx, g, c.id, "POLL_ROUND_ACCEPTED", now)
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}
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func validatePollTaskOwner(ctx context.Context, tx *sql.Tx, g *workflowGraph, row *workflowStep, id core.ID) error {
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var owner, gate *core.ID
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var kind sql.NullString
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if err := tx.QueryRowContext(ctx, `SELECT owner_kind,owner_id,gate_id FROM pulse_tasks WHERE namespace_id=? AND id=?`, g.view.NamespaceID, id).Scan(&kind, &owner, &gate); err != nil {
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return err
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}
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if kind.String != engine.TaskOwnerKind || owner == nil || row.view.ActivationID == nil || *owner != *row.view.ActivationID || gate == nil || *gate != g.gate {
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return errors.New("poll task ownership invalid")
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}
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return nil
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}
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// pollTaskInput 复用首轮已经解析并冻结的输入、业务键及互斥键；不重算依赖可能已改变的表达式。
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func pollTaskInput(ctx context.Context, tx *sql.Tx, g *workflowGraph, row *workflowStep, spec definition.Task) (service.SubmitInput, error) {
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var first core.ID
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if err := tx.QueryRowContext(ctx, "SELECT task_id FROM weave_poll_rounds WHERE namespace_id=? AND workflow_id=? AND activation_id=? AND `round`=1", g.view.NamespaceID, g.view.ID, row.view.ActivationID).Scan(&first); err != nil {
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return service.SubmitInput{}, err
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}
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if err := validatePollTaskOwner(ctx, tx, g, row, first); err != nil {
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return service.SubmitInput{}, err
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}
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base, err := readTask(ctx, tx, g.view.NamespaceID, first, false)
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if err != nil {
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return service.SubmitInput{}, err
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}
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input, err := jsonvalue.Canonical(base.Payload)
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if err != nil {
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return service.SubmitInput{}, err
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}
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activationInput, err := jsonvalue.Canonical(row.input)
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if err != nil {
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return service.SubmitInput{}, err
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}
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if !bytes.Equal(input, activationInput) || definition.ValidateData(spec.InputType, base.Payload) != nil || base.QueueID != spec.QueueID || base.Handler != spec.Handler || base.HandlerVersion != spec.HandlerVersion || base.PayloadVersion != spec.PayloadVersion || base.Retry != spec.Retry || base.Priority != spec.Priority || base.RecoverySafety != spec.RecoverySafety {
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return service.SubmitInput{}, errors.New("poll frozen task parameters mismatch")
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}
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return service.NormalizeSubmit(service.SubmitInput{QueueID: base.QueueID, Handler: base.Handler, HandlerVersion: base.HandlerVersion, PayloadVersion: base.PayloadVersion, Payload: base.Payload, BusinessKey: base.BusinessKey, ConcurrencyKey: base.ConcurrencyKey, Priority: base.Priority, TaskTimeoutMS: spec.TimeoutMS, Retry: base.Retry, RecoverySafety: base.RecoverySafety})
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}
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