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orbit/internal/storage/mysql/migrations/000030_retention_policies.up.sql

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-- 命名空间级历史保留策略;只保存窗口和开关,不执行自动删除。
-- 归档执行器必须在独立事务中核对状态、备份和归档证明后再使用这些窗口。
CREATE TABLE orbit_retention_policies (
namespace_id BINARY(16) NOT NULL COMMENT '策略所属命名空间,服务端核对登录会话后使用',
revision BIGINT UNSIGNED NOT NULL DEFAULT 1 COMMENT '策略乐观并发版本,从1开始;首次默认策略未落库时版本为0',
enabled BOOLEAN NOT NULL DEFAULT FALSE COMMENT '是否允许归档执行器使用策略;默认关闭,不触发删除',
idempotency_days INT UNSIGNED NOT NULL DEFAULT 90 COMMENT '请求幂等记录至少保留天数,范围90至3650',
task_history_days INT UNSIGNED NOT NULL DEFAULT 365 COMMENT '终态任务和执行证据至少保留天数,范围1至3650',
workflow_history_days INT UNSIGNED NOT NULL DEFAULT 365 COMMENT '终态流程、步骤、等待和流程事件至少保留天数,范围1至3650',
event_log_days INT UNSIGNED NOT NULL DEFAULT 365 COMMENT '状态事件和结果事件至少保留天数,范围1至3650',
delivery_history_days INT UNSIGNED NOT NULL DEFAULT 90 COMMENT '已确认结果交付至少保留天数,未确认交付不得按窗口清理',
inbox_history_days INT UNSIGNED NOT NULL DEFAULT 90 COMMENT '已处理流程Inbox事件至少保留天数,未处理记录不得清理',
audit_log_days INT UNSIGNED NOT NULL DEFAULT 2555 COMMENT '管理审计至少保留天数,普通清理不得处理审计记录',
created_at DATETIME(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) COMMENT '策略首次保存时间,统一UTC',
updated_at DATETIME(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) COMMENT '策略最后修改时间,统一UTC',
PRIMARY KEY (namespace_id),
CONSTRAINT ck_retention_policy_revision CHECK (revision > 0),
CONSTRAINT ck_retention_policy_idempotency CHECK (idempotency_days BETWEEN 90 AND 3650),
CONSTRAINT ck_retention_policy_task CHECK (task_history_days BETWEEN 1 AND 3650),
CONSTRAINT ck_retention_policy_workflow CHECK (workflow_history_days BETWEEN 1 AND 3650),
CONSTRAINT ck_retention_policy_event CHECK (event_log_days BETWEEN 1 AND 3650),
CONSTRAINT ck_retention_policy_delivery CHECK (delivery_history_days BETWEEN 1 AND 3650),
CONSTRAINT ck_retention_policy_inbox CHECK (inbox_history_days BETWEEN 1 AND 3650),
CONSTRAINT ck_retention_policy_audit CHECK (audit_log_days BETWEEN 1 AND 3650)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_as_cs COMMENT='命名空间历史数据保留策略,只配置窗口和开关,不自动删除';