aft/bash_background/
mod.rs

1//! Background bash task management. Phase 0 stub; Phase 1 Track D fills in.
2
3pub mod buffer;
4pub mod persistence;
5pub mod process;
6pub mod registry;
7pub mod watchdog;
8
9use crate::context::AppContext;
10use crate::protocol::Response;
11use serde::{Deserialize, Serialize};
12use serde_json::json;
13use std::collections::HashMap;
14use std::path::PathBuf;
15use std::time::Duration;
16
17pub use registry::{BgCompletion, BgTaskRegistry};
18
19#[derive(Debug, Clone, Serialize, Deserialize)]
20pub struct BgTaskInfo {
21    pub task_id: String,
22    pub status: BgTaskStatus,
23    pub command: String,
24    pub started_at: u64,
25    pub duration_ms: Option<u64>,
26}
27
28#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
29#[serde(rename_all = "snake_case")]
30pub enum BgTaskStatus {
31    Starting,
32    Running,
33    Killing,
34    Completed,
35    Failed,
36    Killed,
37    TimedOut,
38}
39
40impl BgTaskStatus {
41    pub fn is_terminal(&self) -> bool {
42        matches!(
43            self,
44            BgTaskStatus::Completed
45                | BgTaskStatus::Failed
46                | BgTaskStatus::Killed
47                | BgTaskStatus::TimedOut
48        )
49    }
50}
51
52/// Spawn a bash command in the background. Returns a task_id immediately.
53pub fn spawn(
54    request_id: &str,
55    session_id: &str,
56    command: &str,
57    workdir: Option<PathBuf>,
58    env: Option<HashMap<String, String>>,
59    timeout_ms: Option<u64>,
60    ctx: &AppContext,
61    require_background_flag: bool,
62    notify_on_completion: bool,
63) -> Response {
64    if require_background_flag && !ctx.config().experimental_bash_background {
65        return Response::error(
66            request_id,
67            "feature_disabled",
68            "background bash is disabled; set `experimental.bash.background: true` in aft.jsonc",
69        );
70    }
71
72    let workdir = workdir.unwrap_or_else(|| {
73        ctx.config().project_root.clone().unwrap_or_else(|| {
74            std::env::current_dir().unwrap_or_else(|_| std::path::PathBuf::from("."))
75        })
76    });
77    let storage_dir = storage_dir(ctx.config().storage_dir.as_deref());
78    let max_running = ctx.config().max_background_bash_tasks;
79    let timeout = timeout_ms.map(Duration::from_millis);
80
81    match ctx.bash_background().spawn(
82        command,
83        session_id.to_string(),
84        workdir,
85        env.unwrap_or_default(),
86        timeout,
87        storage_dir,
88        max_running,
89        notify_on_completion,
90    ) {
91        Ok(task_id) => Response::success(
92            request_id,
93            json!({
94                "task_id": task_id,
95                "status": BgTaskStatus::Running,
96            }),
97        ),
98        Err(message) if message.contains("limit exceeded") => {
99            Response::error(request_id, "background_task_limit_exceeded", message)
100        }
101        Err(message) => Response::error(request_id, "execution_failed", message),
102    }
103}
104
105pub fn storage_dir(configured: Option<&std::path::Path>) -> PathBuf {
106    if let Some(dir) = configured {
107        return dir.to_path_buf();
108    }
109    if let Some(dir) = std::env::var_os("AFT_CACHE_DIR") {
110        return PathBuf::from(dir).join("aft");
111    }
112    // Fallback to the user's home directory. On Unix this is `$HOME`; on
113    // Windows `HOME` is typically unset, so fall back to `USERPROFILE`
114    // (which is always set in interactive sessions and in the env that
115    // OpenCode/Pi pass through to plugin processes). If both are missing
116    // (rare — embedded contexts, broken shells), fall back to a temp
117    // directory rather than `"."` — a relative path makes bg-bash wrapper
118    // commands like `move /Y .\.cache\aft\... ...` fail with "system
119    // cannot find the path specified" once the working directory shifts.
120    let home = std::env::var_os("HOME")
121        .or_else(|| std::env::var_os("USERPROFILE"))
122        .map(PathBuf::from)
123        .unwrap_or_else(std::env::temp_dir);
124    home.join(".cache").join("aft")
125}
aft/bash_background/mod.rs

aft/bash_background/
mod.rs
