1 //! Records stats about requests
2 use std::time::Duration;
4 use lsp_server::RequestId;
7 pub(crate) struct RequestMetrics {
8 pub(crate) id: RequestId,
9 pub(crate) method: String,
10 pub(crate) duration: Duration,
13 const N_COMPLETED_REQUESTS: usize = 10;
15 #[derive(Debug, Default)]
16 pub(crate) struct LatestRequests {
17 // hand-rolling VecDeque here to print things in a nicer way
18 buf: [Option<RequestMetrics>; N_COMPLETED_REQUESTS],
23 pub(crate) fn record(&mut self, request: RequestMetrics) {
24 // special case: don't track status request itself
25 if request.method == "rust-analyzer/analyzerStatus" {
29 self.buf[idx] = Some(request);
30 self.idx = (idx + 1) % N_COMPLETED_REQUESTS;
33 pub(crate) fn iter(&self) -> impl Iterator<Item = (bool, &RequestMetrics)> {
35 self.buf.iter().enumerate().filter_map(move |(i, req)| Some((i == idx, req.as_ref()?)))