harn_cli/acp/
mod.rs

1use std::path::Path;
2use std::sync::Arc;
3
4use async_trait::async_trait;
5use harn_serve::{AcpRuntimeConfigurator, AcpServerConfig, AuthPolicy};
6use tokio::sync::mpsc;
7
8struct CliAcpRuntimeConfigurator;
9
10#[async_trait(?Send)]
11impl AcpRuntimeConfigurator for CliAcpRuntimeConfigurator {
12    async fn configure(
13        &self,
14        vm: &mut harn_vm::Vm,
15        source_path: Option<&Path>,
16    ) -> Result<(), String> {
17        // Hostlib registration is independent of the package/extension flow:
18        // even a `harn run` invocation that hasn't loaded a manifest should
19        // see the `hostlib_*` builtins so callers can probe the surface.
20        // Behind the `hostlib` cargo feature (default-on); see
21        // `crates/harn-hostlib/README.md` for the boundary contract.
22        #[cfg(feature = "hostlib")]
23        {
24            let _ = harn_hostlib::install_default(vm);
25        }
26
27        let Some(path) = source_path else {
28            return Ok(());
29        };
30
31        let extensions = crate::package::load_runtime_extensions(path);
32        crate::package::install_runtime_extensions(&extensions);
33        crate::package::install_manifest_triggers(vm, &extensions)
34            .await
35            .map_err(|error| format!("failed to install manifest triggers: {error}"))?;
36        crate::package::install_manifest_hooks(vm, &extensions)
37            .await
38            .map_err(|error| format!("failed to install manifest hooks: {error}"))?;
39        Ok(())
40    }
41}
42
43pub(crate) fn server_config(pipeline: Option<String>, auth_policy: AuthPolicy) -> AcpServerConfig {
44    let extensions = pipeline
45        .as_deref()
46        .map(Path::new)
47        .map(crate::package::load_runtime_extensions)
48        .unwrap_or_default();
49    AcpServerConfig::new(pipeline)
50        .with_auth_policy(auth_policy)
51        .with_runtime_configurator(Arc::new(CliAcpRuntimeConfigurator))
52        .with_llm_overrides(extensions.llm, extensions.capabilities)
53}
54
55fn ensure_acp_event_log(pipeline: Option<&str>) {
56    if harn_vm::event_log::active_event_log().is_none() {
57        let base_dir = pipeline
58            .map(Path::new)
59            .and_then(Path::parent)
60            .unwrap_or_else(|| Path::new("."));
61        if let Err(error) = harn_vm::event_log::install_default_for_base_dir(base_dir) {
62            eprintln!(
63                "[harn] ACP session replay disabled: failed to initialize EventLog for {}: {error}",
64                base_dir.display()
65            );
66        }
67    }
68}
69
70pub(crate) async fn run_acp_server(pipeline: Option<&str>, auth_policy: AuthPolicy) {
71    ensure_acp_event_log(pipeline);
72    harn_serve::run_acp_server(server_config(pipeline.map(str::to_string), auth_policy)).await;
73}
74
75pub(crate) async fn run_acp_channel_server(
76    pipeline: Option<String>,
77    request_rx: mpsc::UnboundedReceiver<serde_json::Value>,
78    response_tx: mpsc::UnboundedSender<String>,
79) {
80    harn_serve::run_acp_channel_server(
81        server_config(pipeline, AuthPolicy::allow_all()),
82        request_rx,
83        response_tx,
84    )
85    .await;
86}
harn_cli/acp/mod.rs

harn_cli/acp/
mod.rs
