File size: 6,123 Bytes
afa0cbf | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | use std::sync::Arc;
use std::sync::Weak;
use anyhow::Context;
use anyhow::Result;
use anyhow::anyhow;
use anyhow::bail;
use chrono::DateTime;
use chrono::Utc;
use codex_app_server_protocol::CurrentTimeReadParams;
use codex_app_server_protocol::CurrentTimeReadResponse;
use codex_app_server_protocol::ServerRequestPayload;
use codex_core::SleepFuture;
use codex_core::TimeFuture;
use codex_core::TimeProvider;
use codex_protocol::ThreadId;
use tokio::time::Duration;
use tokio::time::Instant;
use tokio::time::timeout_at;
use crate::outgoing_message::ConnectionId;
use crate::outgoing_message::OutgoingMessageSender;
use crate::thread_state::ThreadStateManager;
const CURRENT_TIME_REQUEST_TIMEOUT: Duration = Duration::from_secs(10);
const CURRENT_TIME_POLL_INTERVAL: Duration = Duration::from_secs(1);
pub(crate) fn app_server_time_provider(
outgoing: Arc<OutgoingMessageSender>,
thread_state_manager: ThreadStateManager,
) -> Arc<dyn TimeProvider> {
Arc::new(AppServerTimeProvider {
outgoing: Arc::downgrade(&outgoing),
thread_state_manager,
})
}
struct AppServerTimeProvider {
outgoing: Weak<OutgoingMessageSender>,
thread_state_manager: ThreadStateManager,
}
impl TimeProvider for AppServerTimeProvider {
fn current_time(&self, thread_id: ThreadId) -> TimeFuture<'_> {
let outgoing = self.outgoing.clone();
let thread_state_manager = self.thread_state_manager.clone();
Box::pin(async move {
let outgoing = outgoing
.upgrade()
.context("app-server current-time provider is unavailable")?;
request_current_time(outgoing, thread_state_manager, thread_id).await
})
}
fn sleep(&self, thread_id: ThreadId, duration: Duration) -> SleepFuture<'_> {
let outgoing = self.outgoing.clone();
let thread_state_manager = self.thread_state_manager.clone();
Box::pin(async move {
let outgoing = outgoing
.upgrade()
.context("app-server current-time provider is unavailable")?;
let started_at =
request_current_time(outgoing.clone(), thread_state_manager.clone(), thread_id)
.await?;
let wake_at = started_at
.checked_add_signed(
chrono::Duration::from_std(duration)
.context("external sleep duration is outside the supported range")?,
)
.context("external sleep deadline is outside the supported range")?;
loop {
tokio::time::sleep(CURRENT_TIME_POLL_INTERVAL).await;
if request_current_time(outgoing.clone(), thread_state_manager.clone(), thread_id)
.await?
>= wake_at
{
return Ok(());
}
}
})
}
}
async fn request_current_time(
outgoing: Arc<OutgoingMessageSender>,
thread_state_manager: ThreadStateManager,
thread_id: ThreadId,
) -> Result<DateTime<Utc>> {
let deadline = Instant::now() + CURRENT_TIME_REQUEST_TIMEOUT;
timeout_at(
deadline,
thread_state_manager.wait_for_thread_subscriber(thread_id),
)
.await
.map_err(|_| {
anyhow!(
"timed out waiting for a client to subscribe to the thread after {}s",
CURRENT_TIME_REQUEST_TIMEOUT.as_secs()
)
})?;
let connection_ids = thread_state_manager
.subscribed_connection_ids(thread_id)
.await;
let connection_id = require_single_current_time_connection(&connection_ids)?;
let connection_ids = [connection_id];
let (request_id, rx) = outgoing
.send_request_to_connections(
Some(&connection_ids),
ServerRequestPayload::CurrentTimeRead(CurrentTimeReadParams {
thread_id: thread_id.to_string(),
}),
/*thread_id*/ None,
)
.await;
let result = match timeout_at(deadline, rx).await {
Ok(Ok(Ok(result))) => result,
Ok(Ok(Err(err))) => {
bail!(
"current-time request failed: code={} message={}",
err.code,
err.message
);
}
Ok(Err(err)) => bail!("current-time request was canceled: {err}"),
Err(_) => {
let _canceled = outgoing.cancel_request(&request_id).await;
bail!(
"current-time request timed out after {}s",
CURRENT_TIME_REQUEST_TIMEOUT.as_secs()
);
}
};
let response: CurrentTimeReadResponse =
serde_json::from_value(result).context("invalid current-time response")?;
DateTime::from_timestamp(response.current_time_at, 0)
.ok_or_else(|| anyhow!("current-time response is outside the supported range"))
}
fn require_single_current_time_connection(connection_ids: &[ConnectionId]) -> Result<ConnectionId> {
// External clocks are not interchangeable, so do not choose one silently.
match connection_ids {
[connection_id] => Ok(*connection_id),
_ => bail!(
"expected exactly one client subscribed to the thread, found {}",
connection_ids.len()
),
}
}
#[cfg(test)]
mod tests {
use super::require_single_current_time_connection;
use crate::outgoing_message::ConnectionId;
#[test]
fn current_time_connection_must_be_unambiguous() {
assert_eq!(
require_single_current_time_connection(&[ConnectionId(7)]).unwrap(),
ConnectionId(7)
);
assert_eq!(
require_single_current_time_connection(&[])
.unwrap_err()
.to_string(),
"expected exactly one client subscribed to the thread, found 0"
);
assert_eq!(
require_single_current_time_connection(&[ConnectionId(7), ConnectionId(8)])
.unwrap_err()
.to_string(),
"expected exactly one client subscribed to the thread, found 2"
);
}
}
|