aios_action/
lib.rs

1//! # aios-action — 授权动作执行层
2//!
3//! 职责: 接收 PolicyEngine 校验通过的动作, 执行系统级操作。
4//!
5//! 当前阶段提供骨架实现, 所有操作通过 tracing 记录。
6//! 后续在真机/模拟器上实现真实的 syscall 调用。
7
8use aios_spec::traits::ActionExecutor;
9use aios_spec::traits::ActionResult;
10use aios_spec::ActionType;
11use aios_spec::AuthorizedAction;
12use std::time::Instant;
13
14/// 默认动作执行器
15///
16/// 执行经 PolicyEngine 校验后的 AuthorizedAction。
17/// 当前为骨架实现: 记录操作日志, 返回占位结果。
18/// 后续将对接真实 syscall:
19/// - PreWarmProcess → fork zygote, 调整 cgroup
20/// - PrefetchFile → posix_fadvise(POSIX_FADV_WILLNEED)
21/// - KeepAlive → /proc/pid/oom_score_adj 调整
22/// - ReleaseMemory → /proc/pid/reclaim 或 process_madvise(MADV_COLD)
23pub struct DefaultActionExecutor;
24
25impl ActionExecutor for DefaultActionExecutor {
26    fn execute(&self, authorized: &AuthorizedAction) -> ActionResult {
27        let start = Instant::now();
28        let action = &authorized.action;
29        let action_name = format!("{:?}", action.action_type);
30
31        let (success, error) = match action.action_type {
32            ActionType::PreWarmProcess => {
33                if let Some(ref target) = action.target {
34                    tracing::info!(
35                        target = %target,
36                        urgency = ?action.urgency,
37                        "PreWarmProcess: stub (zygote fork not yet implemented)"
38                    );
39                    (true, None)
40                } else {
41                    (false, Some("PreWarmProcess requires a target app".into()))
42                }
43            },
44            ActionType::PrefetchFile => {
45                tracing::info!(
46                    target = ?action.target,
47                    urgency = ?action.urgency,
48                    "PrefetchFile: stub (posix_fadvise not yet implemented)"
49                );
50                (true, None)
51            },
52            ActionType::KeepAlive => {
53                if let Some(ref target) = action.target {
54                    tracing::info!(
55                        target = %target,
56                        urgency = ?action.urgency,
57                        "KeepAlive: stub (oom_score_adj write not yet implemented)"
58                    );
59                    (true, None)
60                } else {
61                    tracing::info!("KeepAlive: no target specified, skipping");
62                    (true, None)
63                }
64            },
65            ActionType::ReleaseMemory => {
66                tracing::info!(
67                    target = ?action.target,
68                    urgency = ?action.urgency,
69                    "ReleaseMemory: stub (/proc/pid/reclaim not yet implemented)"
70                );
71                (true, None)
72            },
73            ActionType::NoOp => {
74                tracing::debug!("NoOp executed");
75                (true, None)
76            },
77        };
78
79        ActionResult {
80            action_type: action_name,
81            target: action.target.clone(),
82            success,
83            error,
84            latency_us: start.elapsed().as_micros() as u64,
85        }
86    }
87}
88
89impl Default for DefaultActionExecutor {
90    fn default() -> Self {
91        Self
92    }
93}
aios_action/lib.rs

aios_action/
lib.rs
