76 lines
2.1 KiB
Rust
76 lines
2.1 KiB
Rust
//! Data structures that keep track of inflight requests.
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use std::time::{Duration, Instant};
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use lsp_server::RequestId;
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use rustc_hash::FxHashMap;
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#[derive(Debug)]
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pub struct CompletedRequest {
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pub id: RequestId,
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pub method: String,
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pub duration: Duration,
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}
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#[derive(Debug)]
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pub(crate) struct PendingRequest {
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pub(crate) id: RequestId,
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pub(crate) method: String,
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pub(crate) received: Instant,
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}
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impl From<PendingRequest> for CompletedRequest {
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fn from(pending: PendingRequest) -> CompletedRequest {
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CompletedRequest {
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id: pending.id,
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method: pending.method,
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duration: pending.received.elapsed(),
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}
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}
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}
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#[derive(Debug, Default)]
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pub(crate) struct PendingRequests {
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map: FxHashMap<RequestId, PendingRequest>,
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}
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impl PendingRequests {
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pub(crate) fn start(&mut self, request: PendingRequest) {
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let id = request.id.clone();
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let prev = self.map.insert(id.clone(), request);
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assert!(prev.is_none(), "duplicate request with id {}", id);
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}
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pub(crate) fn cancel(&mut self, id: &RequestId) -> bool {
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self.map.remove(id).is_some()
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}
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pub(crate) fn finish(&mut self, id: &RequestId) -> Option<CompletedRequest> {
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self.map.remove(id).map(CompletedRequest::from)
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}
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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 struct LatestRequests {
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// hand-rolling VecDeque here to print things in a nicer way
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buf: [Option<CompletedRequest>; 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: CompletedRequest) {
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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, &CompletedRequest)> {
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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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