harn_vm/orchestration/
mod.rs

1use std::path::PathBuf;
2use std::{cell::RefCell, thread_local};
3
4use serde::{Deserialize, Serialize};
5
6use crate::llm::vm_value_to_json;
7use crate::value::{VmError, VmValue};
8
9pub(crate) fn now_rfc3339() -> String {
10    use std::time::{SystemTime, UNIX_EPOCH};
11    let ts = SystemTime::now()
12        .duration_since(UNIX_EPOCH)
13        .unwrap_or_default()
14        .as_secs();
15    format!("{ts}")
16}
17
18pub(crate) fn new_id(prefix: &str) -> String {
19    format!("{prefix}_{}", uuid::Uuid::now_v7())
20}
21
22pub(crate) fn default_run_dir() -> PathBuf {
23    let base = std::env::current_dir().unwrap_or_else(|_| PathBuf::from("."));
24    crate::runtime_paths::run_root(&base)
25}
26
27mod hooks;
28pub use hooks::*;
29
30mod compaction;
31pub use compaction::*;
32
33mod artifacts;
34pub use artifacts::*;
35
36mod handoffs;
37pub use handoffs::*;
38
39mod policy;
40pub use policy::*;
41
42mod workflow;
43pub use workflow::*;
44
45mod records;
46pub use records::*;
47
48thread_local! {
49    static CURRENT_MUTATION_SESSION: RefCell<Option<MutationSessionRecord>> = const { RefCell::new(None) };
50    /// Workflow-level skill context, installed by `workflow_execute` so
51    /// every per-node agent loop constructed inside `execute_stage_node`
52    /// can pick up the same `skills:` / `skill_match:` registry without
53    /// threading a new parameter through every helper. Cleared on
54    /// workflow exit (success or error) by `WorkflowSkillContextGuard`.
55    static CURRENT_WORKFLOW_SKILL_CONTEXT: RefCell<Option<WorkflowSkillContext>> = const { RefCell::new(None) };
56}
57
58/// Skill wiring threaded from `workflow_execute` into the per-stage
59/// agent loops via thread-local context. `VmValue` wraps `Rc` and is
60/// not `Send`, so we store it in a thread-local rather than a mutex —
61/// the workflow runner pins itself to one task via `LocalSet`, so
62/// every stage observes the same context.
63#[derive(Clone, Default)]
64pub struct WorkflowSkillContext {
65    pub registry: Option<VmValue>,
66    pub match_config: Option<VmValue>,
67}
68
69pub fn install_workflow_skill_context(context: Option<WorkflowSkillContext>) {
70    CURRENT_WORKFLOW_SKILL_CONTEXT.with(|slot| {
71        *slot.borrow_mut() = context;
72    });
73}
74
75pub fn current_workflow_skill_context() -> Option<WorkflowSkillContext> {
76    CURRENT_WORKFLOW_SKILL_CONTEXT.with(|slot| slot.borrow().clone())
77}
78
79/// RAII guard that clears the workflow skill context on drop. Paired
80/// with `install_workflow_skill_context` at the top of `execute_workflow`
81/// so the context never leaks past a workflow's scope.
82pub struct WorkflowSkillContextGuard;
83
84impl Drop for WorkflowSkillContextGuard {
85    fn drop(&mut self) {
86        install_workflow_skill_context(None);
87    }
88}
89
90#[derive(Clone, Debug, Default, Serialize, Deserialize, PartialEq, Eq)]
91#[serde(default)]
92pub struct MutationSessionRecord {
93    pub session_id: String,
94    pub parent_session_id: Option<String>,
95    pub run_id: Option<String>,
96    pub worker_id: Option<String>,
97    pub execution_kind: Option<String>,
98    pub mutation_scope: String,
99    /// Declarative per-tool approval policy for this session. When `None`,
100    /// no policy-driven approval is requested; the session update stream
101    /// remains the only host-observable surface for tool dispatch.
102    pub approval_policy: Option<ToolApprovalPolicy>,
103}
104
105impl MutationSessionRecord {
106    pub fn normalize(mut self) -> Self {
107        if self.session_id.is_empty() {
108            self.session_id = new_id("session");
109        }
110        if self.mutation_scope.is_empty() {
111            self.mutation_scope = "read_only".to_string();
112        }
113        self
114    }
115}
116
117pub fn install_current_mutation_session(session: Option<MutationSessionRecord>) {
118    CURRENT_MUTATION_SESSION.with(|slot| {
119        *slot.borrow_mut() = session.map(MutationSessionRecord::normalize);
120    });
121}
122
123pub fn current_mutation_session() -> Option<MutationSessionRecord> {
124    CURRENT_MUTATION_SESSION.with(|slot| slot.borrow().clone())
125}
126pub(crate) fn parse_json_payload<T: for<'de> Deserialize<'de>>(
127    json: serde_json::Value,
128    label: &str,
129) -> Result<T, VmError> {
130    let payload = json.to_string();
131    let mut deserializer = serde_json::Deserializer::from_str(&payload);
132    let mut tracker = serde_path_to_error::Track::new();
133    let path_deserializer = serde_path_to_error::Deserializer::new(&mut deserializer, &mut tracker);
134    T::deserialize(path_deserializer).map_err(|error| {
135        let snippet = if payload.len() > 600 {
136            format!("{}...", &payload[..600])
137        } else {
138            payload.clone()
139        };
140        VmError::Runtime(format!(
141            "{label} parse error at {}: {} | payload={}",
142            tracker.path(),
143            error,
144            snippet
145        ))
146    })
147}
148
149pub(crate) fn parse_json_value<T: for<'de> Deserialize<'de>>(
150    value: &VmValue,
151) -> Result<T, VmError> {
152    parse_json_payload(vm_value_to_json(value), "orchestration")
153}
154
155#[cfg(test)]
156mod tests;
harn_vm/orchestration/mod.rs

harn_vm/orchestration/
mod.rs
