brokk-mj-core 2.7.2

Session control plane for ACP coding agents
Documentation 
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//! Durable contracts for Mjolnir-managed child-agent sessions.

use std::path::PathBuf;

use serde::{Deserialize, Serialize};

/// Longest time a sub-agent completion wait may remain pending.
pub const MAX_WAIT_SECONDS: u64 = 3_600;

/// Inclusive, one-based source lines captured for a child's initial context.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct SourceRange {
    pub file: PathBuf,
    pub start: u64,
    pub end: u64,
}

/// One MCP request created inside a parent worker and consumed by the
/// controller. `request_id` is the idempotency identity across reconnects.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct SubagentToolRequest {
    pub request_id: String,
    pub created_at_ms: i64,
    pub action: SubagentToolAction,
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(
    tag = "action",
    content = "params",
    rename_all = "snake_case",
    deny_unknown_fields
)]
pub enum SubagentToolAction {
    ListProfiles,
    Spawn {
        task_name: String,
        instructions: String,
        #[serde(default, skip_serializing_if = "Option::is_none")]
        profile_id: Option<String>,
        #[serde(default, skip_serializing_if = "Option::is_none")]
        model: Option<String>,
        #[serde(default, skip_serializing_if = "Option::is_none")]
        effort: Option<String>,
        #[serde(default)]
        working_directory: PathBuf,
        #[serde(default, skip_serializing_if = "Option::is_none")]
        context: Option<String>,
        #[serde(default, skip_serializing_if = "Vec::is_empty")]
        files: Vec<SourceRange>,
    },
    ListAgents,
    SendInput {
        child_session_id: String,
        message: String,
    },
    WaitAgents {
        child_session_ids: Vec<String>,
        #[serde(default, skip_serializing_if = "Option::is_none")]
        timeout_seconds: Option<u64>,
    },
    InterruptAgent {
        child_session_id: String,
    },
    CloseAgent {
        child_session_id: String,
    },
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct SubagentToolResult {
    pub request_id: String,
    pub completed_at_ms: i64,
    pub is_error: bool,
    pub message: String,
}

/// Durable ownership and launch intent for one child session.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct SubagentRecord {
    pub child_session_id: String,
    pub parent_session_id: String,
    pub task_name: String,
    pub profile_id: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub model: Option<String>,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub effort: Option<String>,
    pub working_directory: PathBuf,
    /// Complete first prompt after the controller captures requested ranges.
    pub initial_prompt: String,
    pub request_key: String,
    pub created_at: String,
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub delivered_turn: Option<u64>,
}

/// Lifecycle group used by the tool and both user interfaces.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum SubagentStatus {
    Preparing,
    Running,
    InputRequired,
    Completed,
    Failed,
    Interrupted,
    Stopped,
}

impl SubagentRecord {
    #[must_use]
    pub fn is_child(&self, session_id: &str) -> bool {
        self.child_session_id == session_id
    }
}