112 lines
3.7 KiB
Rust
112 lines
3.7 KiB
Rust
//! Shared global services for a running Loki process.
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//!
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//! `AppState` holds the services that are genuinely process-wide and
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//! immutable during request handling: the frozen [`AppConfig`], the
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//! credential [`Vault`](GlobalVault), the [`McpFactory`](super::mcp_factory::McpFactory)
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//! for MCP subprocess sharing, and the [`RagCache`](super::rag_cache::RagCache)
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//! for shared RAG instances. It is intended to be wrapped in `Arc`
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//! and shared across every [`RequestContext`] that a frontend (CLI,
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//! REPL, API) creates.
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//!
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//! This struct deliberately does **not** hold a live `McpRegistry`.
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//! MCP server processes are scoped to whichever `RoleLike`
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//! (role/session/agent) is currently active, because each scope may
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//! demand a different enabled server set. Live MCP processes are
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//! owned by per-scope
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//! [`ToolScope`](super::tool_scope::ToolScope)s on the
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//! [`RequestContext`] and acquired through `McpFactory`.
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//!
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//! # Phase 1 scope
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//!
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//! This is Phase 1 of the REST API refactor:
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//!
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//! * **Step 0** introduced this struct alongside the existing
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//! [`Config`](super::Config)
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//! * **Step 6.5** added the `mcp_factory` and `rag_cache` fields
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//!
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//! Neither field is wired into the runtime yet — they exist as
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//! additive scaffolding that Step 8+ will connect when the entry
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//! points migrate. See `docs/PHASE-1-IMPLEMENTATION-PLAN.md`.
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use super::mcp_factory::{McpFactory, McpServerKey};
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use super::rag_cache::RagCache;
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use crate::config::AppConfig;
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use crate::function::Functions;
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use crate::mcp::{McpRegistry, McpServersConfig};
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use crate::utils::AbortSignal;
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use crate::vault::{GlobalVault, Vault};
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use anyhow::Result;
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use std::path::PathBuf;
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use std::sync::Arc;
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#[derive(Clone)]
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pub struct AppState {
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pub config: Arc<AppConfig>,
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pub vault: GlobalVault,
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pub mcp_factory: Arc<McpFactory>,
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#[allow(dead_code)]
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pub rag_cache: Arc<RagCache>,
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pub mcp_config: Option<McpServersConfig>,
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pub mcp_log_path: Option<PathBuf>,
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pub mcp_registry: Option<Arc<McpRegistry>>,
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pub functions: Functions,
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}
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impl AppState {
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#[allow(dead_code)]
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pub async fn init(
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config: Arc<AppConfig>,
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log_path: Option<PathBuf>,
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start_mcp_servers: bool,
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abort_signal: AbortSignal,
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) -> Result<Self> {
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let vault = Arc::new(Vault::init(&config));
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let mcp_registry = McpRegistry::init(
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log_path,
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start_mcp_servers,
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config.enabled_mcp_servers.clone(),
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abort_signal,
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&config,
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&vault,
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)
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.await?;
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let mcp_config = mcp_registry.mcp_config().cloned();
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let mcp_log_path = mcp_registry.log_path().cloned();
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let mcp_factory = Arc::new(McpFactory::default());
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if let Some(mcp_servers_config) = &mcp_config {
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for (id, handle) in mcp_registry.running_servers() {
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if let Some(spec) = mcp_servers_config.mcp_servers.get(id) {
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let key = McpServerKey::from_spec(id, spec);
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mcp_factory.insert_active(key, handle);
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}
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}
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}
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let mut functions = Functions::init(config.visible_tools.as_ref().unwrap_or(&Vec::new()))?;
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if !mcp_registry.is_empty() && config.mcp_server_support {
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functions.append_mcp_meta_functions(mcp_registry.list_started_servers());
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}
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let mcp_registry = if mcp_registry.is_empty() {
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None
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} else {
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Some(Arc::new(mcp_registry))
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};
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Ok(Self {
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config,
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vault,
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mcp_factory,
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rag_cache: Arc::new(RagCache::default()),
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mcp_config,
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mcp_log_path,
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mcp_registry,
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functions,
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})
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}
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}
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