use std::collections::HashSet;
use std::sync::Arc;
use std::sync::atomic::{AtomicBool, Ordering};
use log::info;
use tokio::sync::mpsc;
use crate::agent_role_turn::{filter_tools_for_agent_role, turn_allow_for_web_or_cli_job};
use super::super::WebChatQueueDeps;
use super::super::{
PerTurnFlight, WebApprovalSession, WebChatJobEnvelope, resolve_executor_llm_for_job,
resolve_web_llm_for_job,
};
pub(super) struct StreamJobRuntime {
pub sse_tx: mpsc::Sender<String>,
pub cancel: Arc<AtomicBool>,
pub flight: Arc<PerTurnFlight>,
pub cfg_turn: Arc<crate::config::AgentConfig>,
pub api_key_turn: String,
pub tools_for_job: Arc<Vec<crate::types::Tool>>,
pub turn_allow: Option<Arc<std::collections::HashSet<String>>>,
pub executor_api_base: Option<String>,
pub executor_api_key: Option<String>,
pub executor_model_override: Option<String>,
pub client_model_override: Option<String>,
pub web_tool_ctx: Option<crate::tool_registry::WebToolRuntime>,
pub approval_session_id: Option<String>,
}
pub(super) struct StreamJobSetupParams<'a> {
pub envelope: &'a WebChatJobEnvelope,
pub stream_event_tx: mpsc::Sender<(u64, String)>,
pub web_approval_session: Option<WebApprovalSession>,
pub queue_deps: &'a WebChatQueueDeps,
pub cancel: Arc<AtomicBool>,
}
pub(super) async fn stream_job_setup_runtime(
p: StreamJobSetupParams<'_>,
) -> (StreamJobRuntime, tokio::task::JoinHandle<()>) {
let job_id = p.envelope.job_id;
p.queue_deps.sse_stream_hub.register_job(job_id);
let hub_bridge = p.queue_deps.sse_stream_hub.clone();
let http_tx = p.stream_event_tx.clone();
let (sse_tx, mut sse_rx) = mpsc::channel::<String>(1024);
let bridge_job = job_id;
tokio::spawn(async move {
while let Some(line) = sse_rx.recv().await {
if let Some(pair) = hub_bridge.publish(bridge_job, line) {
let _ = http_tx.send(pair).await;
}
}
});
let caps_line = crate::sse::encode_message(crate::sse::SsePayload::SseCapabilities {
caps: crate::sse::SseCapabilitiesBody {
supported_sse_v: crate::sse::protocol::SSE_PROTOCOL_VERSION,
resume_ring_cap: crate::sse::protocol::SSE_RESUME_RING_CAP,
job_id,
terminal_order: Some(
crate::cm_sse_protocol::SSE_TERMINAL_ORDER_SAVED_BEFORE_FINISHED.to_string(),
),
},
});
let _ = crate::sse::send_string_logged(
&sse_tx,
caps_line,
"chat_job_queue::stream sse_capabilities",
)
.await;
crate::sse::send_run_started_sse(
&sse_tx,
"main", &job_id.to_string(), )
.await;
crate::sse::send_reasoning_message_start_sse(&sse_tx, "reasoning").await;
let (web_tool_ctx, approval_session_id) =
stream_job_web_tool_ctx(p.web_approval_session, &sse_tx);
let cancel = p.cancel;
let cancel_watcher =
stream_job_spawn_cancel_watcher(sse_tx.clone(), Arc::clone(&cancel), job_id);
let flight = Arc::new(PerTurnFlight::default());
let _per_guard = p
.queue_deps
.chat_queue
.begin_per_flight_job(job_id, flight.clone());
let cfg_snap = {
let g = p.queue_deps.cfg.read().await;
Arc::new(g.clone())
};
let (mut cfg_turn, api_key_turn) = resolve_web_llm_for_job(
p.queue_deps,
cfg_snap.clone(),
p.envelope.llm_override.as_ref(),
);
if let Some(secs) = p.envelope.readonly_tool_ttl_cache_secs {
let mut c = (*cfg_turn).clone();
c.chat_queues_cache.readonly_tool_ttl_cache_secs = secs;
cfg_turn = Arc::new(c);
}
let turn_allow = turn_allow_for_web_or_cli_job(
&cfg_turn,
p.envelope.persisted_active_agent_role.as_deref(),
p.envelope.request_agent_role.as_deref(),
);
let tools_for_job = Arc::new(filter_tools_for_agent_role(
&p.queue_deps.tools,
turn_allow.as_ref().map(|a| a.as_ref()),
));
let (executor_api_base, executor_api_key, executor_model_override) =
stream_job_resolve_executor_llm(p.queue_deps, cfg_turn.clone(), p.envelope);
let client_model_override = p
.envelope
.llm_override
.as_ref()
.and_then(|o| o.model.clone());
let runtime = StreamJobRuntime {
sse_tx,
cancel,
flight,
cfg_turn,
api_key_turn,
tools_for_job,
turn_allow,
executor_api_base,
executor_api_key,
executor_model_override,
client_model_override,
web_tool_ctx,
approval_session_id,
};
(runtime, cancel_watcher)
}
fn stream_job_web_tool_ctx(
web_approval_session: Option<WebApprovalSession>,
sse_tx: &mpsc::Sender<String>,
) -> (Option<crate::tool_registry::WebToolRuntime>, Option<String>) {
if let Some(session) = web_approval_session {
(
Some(crate::tool_registry::WebToolRuntime {
out_tx: sse_tx.clone(),
approval_rx_shared: Arc::new(tokio::sync::Mutex::new(session.approval_rx)),
approval_request_guard: Arc::new(tokio::sync::Mutex::new(())),
persistent_allowlist_shared: Arc::new(tokio::sync::Mutex::new(HashSet::new())),
}),
Some(session.session_id),
)
} else {
(None, None)
}
}
fn stream_job_spawn_cancel_watcher(
sse_tx: mpsc::Sender<String>,
cancel: Arc<AtomicBool>,
job_id: u64,
) -> tokio::task::JoinHandle<()> {
tokio::spawn(async move {
sse_tx.closed().await;
cancel.store(true, Ordering::SeqCst);
info!(
target: "crabmate",
"chat stream SSE 接收端关闭，已请求取消 job_id={}",
job_id
);
})
}
fn stream_job_resolve_executor_llm(
queue_deps: &WebChatQueueDeps,
cfg_turn: Arc<crate::config::AgentConfig>,
envelope: &WebChatJobEnvelope,
) -> (Option<String>, Option<String>, Option<String>) {
let executor_override = resolve_executor_llm_for_job(
queue_deps,
cfg_turn.clone(),
envelope.executor_llm_override.as_ref(),
);
match executor_override {
Some((executor_cfg, executor_key)) => {
let base = if executor_cfg.llm.api_base != cfg_turn.llm.api_base {
Some(executor_cfg.llm.api_base.clone())
} else {
None
};
let model = if executor_cfg.llm.model != cfg_turn.llm.model {
Some(executor_cfg.llm.model.clone())
} else {
None
};
(base, Some(executor_key), model)
}
None => (None, None, None),
}
}