58 lines
2.3 KiB
Go
58 lines
2.3 KiB
Go
package model
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// TaskState 表示任务状态，与执行尝试状态独立；任务终态不重新打开。
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type TaskState string
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const (
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TaskWaiting TaskState = "WAITING" // 等待派发、延时或退避到期。
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TaskLeased TaskState = "LEASED" // 已领取但尚未获得开始授权。
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TaskRunning TaskState = "RUNNING" // 已授权处理器开始执行。
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TaskNeedsReview TaskState = "NEEDS_REVIEW" // 结果未知或需要人工核查。
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TaskSucceeded TaskState = "SUCCEEDED" // 业务处理器成功结果已保存。
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TaskFailed TaskState = "FAILED" // 已知失败且不再继续执行。
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TaskCancelled TaskState = "CANCELLED" // 取消已确认，不能理解为业务回滚。
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)
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func (s TaskState) Terminal() bool {
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return s == TaskSucceeded || s == TaskFailed || s == TaskCancelled
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}
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// CanTransitionTo 只检查状态图，不能代替数据库事务中的权限、版本、租约、
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// 暂停门控、副作用证据和重试预算校验。
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func (s TaskState) CanTransitionTo(next TaskState) bool {
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switch s {
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case TaskWaiting:
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return next == TaskLeased || next == TaskCancelled || next == TaskFailed
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case TaskLeased:
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return next == TaskRunning || next == TaskWaiting || next == TaskCancelled || next == TaskFailed
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case TaskRunning:
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return next == TaskSucceeded || next == TaskWaiting || next == TaskFailed || next == TaskNeedsReview || next == TaskCancelled
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case TaskNeedsReview:
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return next == TaskSucceeded || next == TaskFailed
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default:
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return false
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}
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}
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type AttemptState string
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const (
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AttemptLeased AttemptState = "LEASED"
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AttemptRunning AttemptState = "RUNNING"
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AttemptSucceeded AttemptState = "SUCCEEDED"
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AttemptFailed AttemptState = "FAILED"
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AttemptCancelled AttemptState = "CANCELLED"
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AttemptExpired AttemptState = "EXPIRED"
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AttemptUnknown AttemptState = "UNKNOWN"
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)
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// RecoverySafety 表示恢复安全等级，空值或未知值默认需要核查。
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type RecoverySafety string
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const (
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RecoveryIdempotent RecoverySafety = "IDEMPOTENT" // 接入方明确保证可幂等恢复。
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RecoveryReconcileOnly RecoverySafety = "RECONCILE_ONLY" // 恢复前必须查询结果或人工核查。
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)
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func (s RecoverySafety) CanRecoverAutomatically() bool { return s == RecoveryIdempotent }
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