38 lines
1.0 KiB
Rust
38 lines
1.0 KiB
Rust
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//! Records stats about requests
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use std::time::Duration;
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use lsp_server::RequestId;
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#[derive(Debug)]
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pub(crate) struct RequestMetrics {
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pub(crate) id: RequestId,
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pub(crate) method: String,
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pub(crate) duration: Duration,
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}
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const N_COMPLETED_REQUESTS: usize = 10;
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#[derive(Debug, Default)]
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pub(crate) struct LatestRequests {
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// hand-rolling VecDeque here to print things in a nicer way
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buf: [Option<RequestMetrics>; N_COMPLETED_REQUESTS],
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idx: usize,
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}
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impl LatestRequests {
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pub(crate) fn record(&mut self, request: RequestMetrics) {
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// special case: don't track status request itself
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if request.method == "rust-analyzer/analyzerStatus" {
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return;
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}
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let idx = self.idx;
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self.buf[idx] = Some(request);
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self.idx = (idx + 1) % N_COMPLETED_REQUESTS;
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}
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pub(crate) fn iter(&self) -> impl Iterator<Item = (bool, &RequestMetrics)> {
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let idx = self.idx;
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self.buf.iter().enumerate().filter_map(move |(i, req)| Some((i == idx, req.as_ref()?)))
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}
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}
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