aether_cli/acp/
mod.rs

1pub(crate) mod agent;
2pub(crate) mod agent_key;
3pub(crate) mod agent_runtime;
4pub(crate) mod config_setting;
5pub(crate) mod error;
6pub(crate) mod fake_prompt_mcp;
7pub(crate) mod model_config;
8pub(crate) mod prompt_history_index;
9pub(crate) mod protocol;
10pub(crate) mod session_actor;
11pub(crate) mod session_config_state;
12pub(crate) mod session_factory;
13pub(crate) mod session_store;
14pub(crate) mod slash_commands;
15pub(crate) mod state;
16pub(crate) mod stdio;
17pub mod testing;
18
19pub use protocol::map_mcp_prompt_to_available_command;
20
21use crate::acp::agent::acp_agent_builder;
22use crate::acp::state::{AcpState, AcpStateConfig};
23use crate::acp::stdio::Stdio;
24use crate::provider_connection_args::ProviderConnectionArgs;
25use crate::settings_args::SettingsSourceArgs;
26use agent_client_protocol as acp;
27use llm::ReasoningEffort;
28use std::sync::Arc;
29use std::{fs::create_dir_all, path::PathBuf};
30use thiserror::Error;
31use tracing::info;
32use tracing_appender::rolling::daily;
33use tracing_subscriber::EnvFilter;
34
35use aether_auth::OAuthCredentialStorage;
36use session_factory::InitialSessionSelection;
37use session_store::SessionStore;
38
39#[derive(clap::Args, Debug)]
40pub struct AcpArgs {
41    /// Path to log file directory (default: /tmp/aether-acp-logs)
42    #[clap(long, default_value = "/tmp/aether-acp-logs")]
43    pub log_dir: PathBuf,
44
45    /// Initial agent (mode) to select for new sessions. Mutually exclusive with `--model` and `--reasoning-effort`.
46    #[clap(long, conflicts_with_all = ["model", "reasoning_effort"])]
47    pub agent: Option<String>,
48
49    /// Initial model id (e.g. `anthropic:claude-sonnet-4-5`) for new sessions.
50    /// Mutually exclusive with `--agent`.
51    #[clap(long, conflicts_with = "agent")]
52    pub model: Option<String>,
53
54    /// Initial reasoning effort for an explicit model session. Requires `--model` and is mutually exclusive with `--agent`.
55    #[clap(long, value_name = "low|medium|high|xhigh", requires = "model", conflicts_with = "agent")]
56    pub reasoning_effort: Option<ReasoningEffort>,
57
58    #[command(flatten)]
59    pub provider_connection: ProviderConnectionArgs,
60
61    #[command(flatten)]
62    pub settings_source: SettingsSourceArgs,
63}
64
65/// Outcome of running the ACP server successfully.
66#[derive(Debug)]
67pub enum AcpRunOutcome {
68    /// The client disconnected cleanly (e.g. EOF on stdin).
69    CleanDisconnect,
70}
71
72/// Errors that terminate the ACP server run.
73#[derive(Debug, Error)]
74pub enum AcpRunError {
75    #[error("ACP protocol error: {0}")]
76    Protocol(#[from] acp::Error),
77}
78
79pub async fn run_acp(args: AcpArgs) -> Result<AcpRunOutcome, AcpRunError> {
80    info!("Starting Aether ACP server");
81
82    setup_logging(&args);
83
84    let initial_selection = if let Some(agent) = args.agent.clone() {
85        InitialSessionSelection::agent(agent)
86    } else if let Some(model) = args.model.clone() {
87        InitialSessionSelection::model(model, args.reasoning_effort)
88    } else {
89        InitialSessionSelection::default()
90    };
91    let session_store =
92        SessionStore::new().map_or_else(|e| panic!("Failed to initialize session store: {e}"), Arc::new);
93    let oauth_credential_store: Arc<dyn OAuthCredentialStorage> =
94        Arc::new(aether_auth::OsKeyringStore::with_platform_store());
95    let provider_connections = args.provider_connection.into_overrides();
96    let state = Arc::new(AcpState::new(AcpStateConfig {
97        session_store,
98        oauth_credential_store,
99        initial_selection,
100        settings_source: args.settings_source,
101        provider_connections,
102    }));
103
104    let connect_result = acp_agent_builder(state.clone()).connect_to(Stdio::new()).await;
105    state.shutdown_all().await;
106
107    match connect_result {
108        Ok(()) => Ok(AcpRunOutcome::CleanDisconnect),
109        Err(err) => Err(AcpRunError::Protocol(err)),
110    }
111}
112
113fn setup_logging(args: &AcpArgs) {
114    create_dir_all(&args.log_dir).ok();
115    tracing_subscriber::fmt()
116        .with_writer(daily(&args.log_dir, "aether-acp.log"))
117        .with_ansi(false) // No ANSI colors in log files
118        .with_env_filter(EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("warn")))
119        .pretty()
120        .init();
121}
122
123#[cfg(test)]
124mod tests {
125    use super::*;
126    use clap::Parser;
127
128    #[derive(Debug, Parser)]
129    struct TestCli {
130        #[command(flatten)]
131        args: AcpArgs,
132    }
133
134    #[test]
135    fn agent_conflicts_with_model() {
136        let err = TestCli::try_parse_from(["test", "--agent", "planner", "--model", "anthropic:claude-sonnet-4-5"])
137            .expect_err("agent and model should conflict");
138        assert_eq!(err.kind(), clap::error::ErrorKind::ArgumentConflict);
139    }
140
141    #[test]
142    fn agent_conflicts_with_reasoning_effort() {
143        let err = TestCli::try_parse_from(["test", "--agent", "planner", "--reasoning-effort", "high"])
144            .expect_err("agent and reasoning effort should conflict");
145        assert_eq!(err.kind(), clap::error::ErrorKind::ArgumentConflict);
146    }
147
148    #[test]
149    fn reasoning_effort_requires_model() {
150        let err = TestCli::try_parse_from(["test", "--reasoning-effort", "high"])
151            .expect_err("reasoning effort should require model");
152        assert_eq!(err.kind(), clap::error::ErrorKind::MissingRequiredArgument);
153    }
154
155    #[test]
156    fn reasoning_effort_with_model_is_allowed() {
157        let cli =
158            TestCli::try_parse_from(["test", "--model", "anthropic:claude-sonnet-4-5", "--reasoning-effort", "high"])
159                .expect("reasoning effort can configure an explicit model session");
160        assert_eq!(cli.args.reasoning_effort, Some(ReasoningEffort::High));
161    }
162}
aether_cli/acp/mod.rs

aether_cli/acp/
mod.rs
