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feat(lsp): add performance measurements (#9209)

This commit is contained in:
Kitson Kelly 2021-01-27 11:32:49 +11:00 committed by GitHub
parent ada43cc56a
commit e7323002d9
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 446 additions and 31 deletions

View file

@ -31,6 +31,7 @@ use super::diagnostics;
use super::diagnostics::DiagnosticCollection;
use super::diagnostics::DiagnosticSource;
use super::documents::DocumentCache;
use super::performance::Performance;
use super::sources;
use super::sources::Sources;
use super::text;
@ -54,14 +55,15 @@ pub struct StateSnapshot {
struct Inner {
assets: HashMap<ModuleSpecifier, Option<AssetDocument>>,
client: Client,
ts_server: TsServer,
config: Config,
documents: DocumentCache,
sources: Sources,
diagnostics: DiagnosticCollection,
documents: DocumentCache,
maybe_config_uri: Option<Url>,
maybe_import_map: Option<ImportMap>,
maybe_import_map_uri: Option<Url>,
performance: Performance,
sources: Sources,
ts_server: TsServer,
}
impl LanguageServer {
@ -81,14 +83,15 @@ impl Inner {
Self {
assets: Default::default(),
client,
ts_server: TsServer::new(),
config: Default::default(),
documents: Default::default(),
sources,
diagnostics: Default::default(),
documents: Default::default(),
maybe_config_uri: Default::default(),
maybe_import_map: Default::default(),
maybe_import_map_uri: Default::default(),
performance: Default::default(),
sources,
ts_server: TsServer::new(),
}
}
@ -103,7 +106,8 @@ impl Inner {
&self,
specifier: ModuleSpecifier,
) -> Result<LineIndex, AnyError> {
if specifier.as_url().scheme() == "asset" {
let mark = self.performance.mark("get_line_index");
let result = if specifier.as_url().scheme() == "asset" {
let maybe_asset = self.assets.get(&specifier).cloned();
if let Some(maybe_asset) = maybe_asset {
if let Some(asset) = maybe_asset {
@ -128,7 +132,9 @@ impl Inner {
Ok(line_index)
} else {
Err(anyhow!("Unable to find line index for: {}", specifier))
}
};
self.performance.measure(mark);
result
}
/// Only searches already cached assets and documents for a line index. If
@ -137,7 +143,8 @@ impl Inner {
&self,
specifier: &ModuleSpecifier,
) -> Option<LineIndex> {
if specifier.as_url().scheme() == "asset" {
let mark = self.performance.mark("get_line_index_sync");
let maybe_line_index = if specifier.as_url().scheme() == "asset" {
if let Some(Some(asset)) = self.assets.get(specifier) {
Some(asset.line_index.clone())
} else {
@ -150,7 +157,9 @@ impl Inner {
} else {
self.sources.get_line_index(specifier)
}
}
};
self.performance.measure(mark);
maybe_line_index
}
async fn prepare_diagnostics(&mut self) -> Result<(), AnyError> {
@ -162,6 +171,7 @@ impl Inner {
let lint = async {
let mut diagnostics = None;
if lint_enabled {
let mark = self.performance.mark("prepare_diagnostics_lint");
diagnostics = Some(
diagnostics::generate_lint_diagnostics(
self.snapshot(),
@ -169,6 +179,7 @@ impl Inner {
)
.await,
);
self.performance.measure(mark);
};
Ok::<_, AnyError>(diagnostics)
};
@ -176,6 +187,7 @@ impl Inner {
let ts = async {
let mut diagnostics = None;
if enabled {
let mark = self.performance.mark("prepare_diagnostics_ts");
diagnostics = Some(
diagnostics::generate_ts_diagnostics(
self.snapshot(),
@ -184,6 +196,7 @@ impl Inner {
)
.await?,
);
self.performance.measure(mark);
};
Ok::<_, AnyError>(diagnostics)
};
@ -191,6 +204,7 @@ impl Inner {
let deps = async {
let mut diagnostics = None;
if enabled {
let mark = self.performance.mark("prepare_diagnostics_deps");
diagnostics = Some(
diagnostics::generate_dependency_diagnostics(
self.snapshot(),
@ -198,6 +212,7 @@ impl Inner {
)
.await?,
);
self.performance.measure(mark);
};
Ok::<_, AnyError>(diagnostics)
};
@ -249,6 +264,7 @@ impl Inner {
}
async fn publish_diagnostics(&mut self) -> Result<(), AnyError> {
let mark = self.performance.mark("publish_diagnostics");
let (maybe_changes, diagnostics_collection) = {
let diagnostics_collection = &mut self.diagnostics;
let maybe_changes = diagnostics_collection.take_changes();
@ -291,6 +307,7 @@ impl Inner {
}
}
self.performance.measure(mark);
Ok(())
}
@ -302,7 +319,8 @@ impl Inner {
}
}
async fn update_import_map(&mut self) -> Result<(), AnyError> {
pub async fn update_import_map(&mut self) -> Result<(), AnyError> {
let mark = self.performance.mark("update_import_map");
let (maybe_import_map, maybe_root_uri) = {
let config = &self.config;
(config.settings.import_map.clone(), config.root_uri.clone())
@ -344,10 +362,12 @@ impl Inner {
} else {
self.maybe_import_map = None;
}
self.performance.measure(mark);
Ok(())
}
async fn update_tsconfig(&mut self) -> Result<(), AnyError> {
let mark = self.performance.mark("update_tsconfig");
let mut tsconfig = TsConfig::new(json!({
"allowJs": true,
"experimentalDecorators": true,
@ -413,6 +433,7 @@ impl Inner {
.ts_server
.request(self.snapshot(), tsc::RequestMethod::Configure(tsconfig))
.await?;
self.performance.measure(mark);
Ok(())
}
}
@ -513,6 +534,7 @@ impl Inner {
}
async fn did_open(&mut self, params: DidOpenTextDocumentParams) {
let mark = self.performance.mark("did_open");
if params.text_document.uri.scheme() == "deno" {
// we can ignore virtual text documents opening, as they don't need to
// be tracked in memory, as they are static assets that won't change
@ -532,6 +554,7 @@ impl Inner {
error!("{}", err);
}
self.performance.measure(mark);
// TODO(@kitsonk): how to better lazily do this?
if let Err(err) = self.prepare_diagnostics().await {
error!("{}", err);
@ -539,6 +562,7 @@ impl Inner {
}
async fn did_change(&mut self, params: DidChangeTextDocumentParams) {
let mark = self.performance.mark("did_change");
let specifier = utils::normalize_url(params.text_document.uri);
if let Err(err) = self.documents.change(
&specifier,
@ -554,6 +578,7 @@ impl Inner {
error!("{}", err);
}
self.performance.measure(mark);
// TODO(@kitsonk): how to better lazily do this?
if let Err(err) = self.prepare_diagnostics().await {
error!("{}", err);
@ -561,6 +586,7 @@ impl Inner {
}
async fn did_close(&mut self, params: DidCloseTextDocumentParams) {
let mark = self.performance.mark("did_close");
if params.text_document.uri.scheme() == "deno" {
// we can ignore virtual text documents opening, as they don't need to
// be tracked in memory, as they are static assets that won't change
@ -574,6 +600,7 @@ impl Inner {
if let Err(err) = self.prepare_diagnostics().await {
error!("{}", err);
}
self.performance.measure(mark);
}
async fn did_save(&self, _params: DidSaveTextDocumentParams) {
@ -584,6 +611,7 @@ impl Inner {
&mut self,
params: DidChangeConfigurationParams,
) {
let mark = self.performance.mark("did_change_configuration");
let config = if self.config.client_capabilities.workspace_configuration {
self
.client
@ -625,12 +653,14 @@ impl Inner {
} else {
error!("received empty extension settings from the client");
}
self.performance.measure(mark);
}
async fn did_change_watched_files(
&mut self,
params: DidChangeWatchedFilesParams,
) {
let mark = self.performance.mark("did_change_watched_files");
// if the current import map has changed, we need to reload it
if let Some(import_map_uri) = &self.maybe_import_map_uri {
if params.changes.iter().any(|fe| *import_map_uri == fe.uri) {
@ -653,12 +683,14 @@ impl Inner {
}
}
}
self.performance.measure(mark);
}
async fn formatting(
&self,
params: DocumentFormattingParams,
) -> LspResult<Option<Vec<TextEdit>>> {
let mark = self.performance.mark("formatting");
let specifier = utils::normalize_url(params.text_document.uri.clone());
let file_text = self
.documents
@ -697,6 +729,7 @@ impl Inner {
.await
.unwrap();
self.performance.measure(mark);
if let Some(text_edits) = text_edits {
if text_edits.is_empty() {
Ok(None)
@ -713,6 +746,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("hover");
let specifier = utils::normalize_url(
params.text_document_position_params.text_document.uri,
);
@ -736,8 +770,10 @@ impl Inner {
serde_json::from_value(res).unwrap();
if let Some(quick_info) = maybe_quick_info {
let hover = quick_info.to_hover(&line_index);
self.performance.measure(mark);
Ok(Some(hover))
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -749,6 +785,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("document_highlight");
let specifier = utils::normalize_url(
params.text_document_position_params.text_document.uri,
);
@ -774,14 +811,15 @@ impl Inner {
serde_json::from_value(res).unwrap();
if let Some(document_highlights) = maybe_document_highlights {
Ok(Some(
document_highlights
.into_iter()
.map(|dh| dh.to_highlight(&line_index))
.flatten()
.collect(),
))
let result = document_highlights
.into_iter()
.map(|dh| dh.to_highlight(&line_index))
.flatten()
.collect();
self.performance.measure(mark);
Ok(Some(result))
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -793,6 +831,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("references");
let specifier =
utils::normalize_url(params.text_document_position.text_document.uri);
let line_index =
@ -829,8 +868,10 @@ impl Inner {
results.push(reference.to_location(&line_index));
}
self.performance.measure(mark);
Ok(Some(results))
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -842,6 +883,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("goto_definition");
let specifier = utils::normalize_url(
params.text_document_position_params.text_document.uri,
);
@ -865,12 +907,13 @@ impl Inner {
serde_json::from_value(res).unwrap();
if let Some(definition) = maybe_definition {
Ok(
definition
.to_definition(&line_index, |s| self.get_line_index(s))
.await,
)
let results = definition
.to_definition(&line_index, |s| self.get_line_index(s))
.await;
self.performance.measure(mark);
Ok(results)
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -882,6 +925,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("completion");
let specifier =
utils::normalize_url(params.text_document_position.text_document.uri);
// TODO(lucacasonato): handle error correctly
@ -910,8 +954,11 @@ impl Inner {
serde_json::from_value(res).unwrap();
if let Some(completions) = maybe_completion_info {
Ok(Some(completions.into_completion_response(&line_index)))
let results = completions.into_completion_response(&line_index);
self.performance.measure(mark);
Ok(Some(results))
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -923,6 +970,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("goto_implementation");
let specifier = utils::normalize_url(
params.text_document_position_params.text_document.uri,
);
@ -971,8 +1019,10 @@ impl Inner {
results.push(link);
}
}
self.performance.measure(mark);
Ok(Some(GotoDefinitionResponse::Link(results)))
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -984,6 +1034,7 @@ impl Inner {
if !self.enabled() {
return Ok(None);
}
let mark = self.performance.mark("goto_implementation");
let specifier =
utils::normalize_url(params.text_document_position.text_document.uri);
@ -1039,8 +1090,10 @@ impl Inner {
error!("Failed to get workspace edits: {:#?}", err);
LspError::internal_error()
})?;
self.performance.measure(mark);
Ok(Some(workspace_edits))
} else {
self.performance.measure(mark);
Ok(None)
}
}
@ -1061,6 +1114,7 @@ impl Inner {
Some(Err(err)) => Err(LspError::invalid_params(err.to_string())),
None => Err(LspError::invalid_params("Missing parameters")),
},
"deno/performance" => self.get_performance(),
"deno/virtualTextDocument" => match params.map(serde_json::from_value) {
Some(Ok(params)) => Ok(Some(
serde_json::to_value(self.virtual_text_document(params).await?)
@ -1206,6 +1260,7 @@ struct VirtualTextDocumentParams {
impl Inner {
async fn cache(&mut self, params: CacheParams) -> LspResult<bool> {
let mark = self.performance.mark("cache");
let specifier = utils::normalize_url(params.text_document.uri);
let maybe_import_map = self.maybe_import_map.clone();
sources::cache(specifier.clone(), maybe_import_map)
@ -1221,24 +1276,40 @@ impl Inner {
error!("{}", err);
LspError::internal_error()
})?;
self.performance.measure(mark);
Ok(true)
}
fn get_performance(&self) -> LspResult<Option<Value>> {
let averages = self.performance.averages();
Ok(Some(json!({ "averages": averages })))
}
async fn virtual_text_document(
&self,
params: VirtualTextDocumentParams,
) -> LspResult<Option<String>> {
let mark = self.performance.mark("virtual_text_document");
let specifier = utils::normalize_url(params.text_document.uri);
let url = specifier.as_url();
let contents = if url.as_str() == "deno:/status.md" {
Some(format!(
let mut contents = String::new();
contents.push_str(&format!(
r#"# Deno Language Server Status
- Documents in memory: {}
"#,
"#,
self.documents.len()
))
));
contents.push_str("\n## Performance\n\n");
for average in self.performance.averages() {
contents.push_str(&format!(
" - {}: {}ms ({})\n",
average.name, average.average_duration, average.count
));
}
Some(contents)
} else {
match url.scheme() {
"asset" => {
@ -1273,6 +1344,7 @@ impl Inner {
}
}
};
self.performance.measure(mark);
Ok(contents)
}
}
@ -1280,6 +1352,7 @@ impl Inner {
#[cfg(test)]
mod tests {
use super::*;
use crate::lsp::performance::PerformanceAverage;
use lspower::jsonrpc;
use lspower::ExitedError;
use lspower::LspService;
@ -1288,19 +1361,25 @@ mod tests {
use std::time::Instant;
use tower_test::mock::Spawn;
enum LspResponse {
enum LspResponse<V>
where
V: FnOnce(Value),
{
None,
RequestAny,
Request(u64, Value),
RequestAssert(V),
}
type LspTestHarnessRequest = (&'static str, LspResponse<fn(Value)>);
struct LspTestHarness {
requests: Vec<(&'static str, LspResponse)>,
requests: Vec<LspTestHarnessRequest>,
service: Spawn<LspService>,
}
impl LspTestHarness {
pub fn new(requests: Vec<(&'static str, LspResponse)>) -> Self {
pub fn new(requests: Vec<LspTestHarnessRequest>) -> Self {
let (service, _) = LspService::new(LanguageServer::new);
let service = Spawn::new(service);
Self { requests, service }
@ -1330,6 +1409,10 @@ mod tests {
),
_ => panic!("unexpected result: {:?}", result),
},
LspResponse::RequestAssert(assert) => match result {
Some(jsonrpc::Outgoing::Response(resp)) => assert(json!(resp)),
_ => panic!("unexpected result: {:?}", result),
},
},
Err(err) => panic!("Error result: {}", err),
}
@ -1609,6 +1692,11 @@ mod tests {
("initialized_notification.json", LspResponse::None),
("did_open_notification_large.json", LspResponse::None),
("did_change_notification_large.json", LspResponse::None),
("did_change_notification_large_02.json", LspResponse::None),
("did_change_notification_large_03.json", LspResponse::None),
("hover_request_large_01.json", LspResponse::RequestAny),
("hover_request_large_02.json", LspResponse::RequestAny),
("hover_request_large_03.json", LspResponse::RequestAny),
(
"shutdown_request.json",
LspResponse::Request(3, json!(null)),
@ -1676,4 +1764,61 @@ mod tests {
]);
harness.run().await;
}
#[derive(Deserialize)]
struct PerformanceAverages {
averages: Vec<PerformanceAverage>,
}
#[derive(Deserialize)]
struct PerformanceResponse {
result: PerformanceAverages,
}
#[tokio::test]
async fn test_deno_performance_request() {
let mut harness = LspTestHarness::new(vec![
("initialize_request.json", LspResponse::RequestAny),
("initialized_notification.json", LspResponse::None),
("did_open_notification.json", LspResponse::None),
(
"hover_request.json",
LspResponse::Request(
2,
json!({
"contents": [
{
"language": "typescript",
"value": "const Deno.args: string[]"
},
"Returns the script arguments to the program. If for example we run a\nprogram:\n\ndeno run --allow-read https://deno.land/std/examples/cat.ts /etc/passwd\n\nThen `Deno.args` will contain:\n\n[ \"/etc/passwd\" ]"
],
"range": {
"start": {
"line": 0,
"character": 17
},
"end": {
"line": 0,
"character": 21
}
}
}),
),
),
(
"performance_request.json",
LspResponse::RequestAssert(|value| {
let resp: PerformanceResponse =
serde_json::from_value(value).unwrap();
assert_eq!(resp.result.averages.len(), 9);
}),
),
(
"shutdown_request.json",
LspResponse::Request(3, json!(null)),
),
("exit_notification.json", LspResponse::None),
]);
harness.run().await;
}
}

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@ -9,6 +9,7 @@ mod config;
mod diagnostics;
mod documents;
mod language_server;
mod performance;
mod sources;
mod text;
mod tsc;

171
cli/lsp/performance.rs Normal file
View file

@ -0,0 +1,171 @@
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use deno_core::serde::Deserialize;
use deno_core::serde::Serialize;
use std::collections::HashMap;
use std::collections::VecDeque;
use std::sync::Arc;
use std::sync::Mutex;
use std::time::Duration;
use std::time::Instant;
#[derive(Debug, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct PerformanceAverage {
pub name: String,
pub count: u32,
pub average_duration: u32,
}
/// A structure which serves as a start of a measurement span.
#[derive(Debug)]
pub struct PerformanceMark {
name: String,
count: u32,
start: Instant,
}
/// A structure which holds the information about the measured span.
#[derive(Debug, Clone)]
pub struct PerformanceMeasure {
pub name: String,
pub count: u32,
pub duration: Duration,
}
impl From<PerformanceMark> for PerformanceMeasure {
fn from(value: PerformanceMark) -> Self {
Self {
name: value.name,
count: value.count,
duration: value.start.elapsed(),
}
}
}
/// A simple structure for marking a start of something to measure the duration
/// of and measuring that duration. Each measurement is identified by a string
/// name and a counter is incremented each time a new measurement is marked.
///
/// The structure will limit the size of measurements to the most recent 1000,
/// and will roll off when that limit is reached.
#[derive(Debug)]
pub struct Performance {
counts: Arc<Mutex<HashMap<String, u32>>>,
max_size: usize,
measures: Arc<Mutex<VecDeque<PerformanceMeasure>>>,
}
impl Default for Performance {
fn default() -> Self {
Self {
counts: Default::default(),
max_size: 1_000,
measures: Default::default(),
}
}
}
impl Performance {
/// Return the count and average duration of a measurement identified by name.
#[cfg(test)]
pub fn average(&self, name: &str) -> Option<(usize, Duration)> {
let mut items = Vec::new();
for measure in self.measures.lock().unwrap().iter() {
if measure.name == name {
items.push(measure.duration);
}
}
let len = items.len();
if len > 0 {
let average = items.into_iter().sum::<Duration>() / len as u32;
Some((len, average))
} else {
None
}
}
/// Return an iterator which provides the names, count, and average duration
/// of each measurement.
pub fn averages(&self) -> Vec<PerformanceAverage> {
let mut averages: HashMap<String, Vec<Duration>> = HashMap::new();
for measure in self.measures.lock().unwrap().iter() {
averages
.entry(measure.name.clone())
.or_default()
.push(measure.duration);
}
averages
.into_iter()
.map(|(k, d)| {
let a = d.clone().into_iter().sum::<Duration>() / d.len() as u32;
PerformanceAverage {
name: k,
count: d.len() as u32,
average_duration: a.as_millis() as u32,
}
})
.collect()
}
/// Marks the start of a measurement which returns a performance mark
/// structure, which is then passed to `.measure()` to finalize the duration
/// and add it to the internal buffer.
pub fn mark<S: AsRef<str>>(&self, name: S) -> PerformanceMark {
let name = name.as_ref();
let mut counts = self.counts.lock().unwrap();
let count = counts.entry(name.to_string()).or_insert(0);
*count += 1;
PerformanceMark {
name: name.to_string(),
count: *count,
start: Instant::now(),
}
}
/// A function which accepts a previously created performance mark which will
/// be used to finalize the duration of the span being measured, and add the
/// measurement to the internal buffer.
pub fn measure(&self, mark: PerformanceMark) {
let measure = PerformanceMeasure::from(mark);
let mut measures = self.measures.lock().unwrap();
measures.push_back(measure);
while measures.len() > self.max_size {
measures.pop_front();
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_average() {
let performance = Performance::default();
let mark1 = performance.mark("a");
let mark2 = performance.mark("a");
let mark3 = performance.mark("b");
performance.measure(mark2);
performance.measure(mark1);
performance.measure(mark3);
let (count, _) = performance.average("a").expect("should have had value");
assert_eq!(count, 2);
let (count, _) = performance.average("b").expect("should have had value");
assert_eq!(count, 1);
assert!(performance.average("c").is_none());
}
#[test]
fn test_averages() {
let performance = Performance::default();
let mark1 = performance.mark("a");
let mark2 = performance.mark("a");
performance.measure(mark2);
performance.measure(mark1);
let averages = performance.averages();
assert_eq!(averages.len(), 1);
assert_eq!(averages[0].count, 2);
}
}

View file

@ -0,0 +1,25 @@
{
"jsonrpc": "2.0",
"method": "textDocument/didChange",
"params": {
"textDocument": {
"uri": "file:///a/file.ts",
"version": 2
},
"contentChanges": [
{
"range": {
"start": {
"line": 445,
"character": 4
},
"end": {
"line": 445,
"character": 4
}
},
"text": "// "
}
]
}
}

View file

@ -0,0 +1,25 @@
{
"jsonrpc": "2.0",
"method": "textDocument/didChange",
"params": {
"textDocument": {
"uri": "file:///a/file.ts",
"version": 2
},
"contentChanges": [
{
"range": {
"start": {
"line": 477,
"character": 4
},
"end": {
"line": 477,
"character": 9
}
},
"text": "error"
}
]
}
}

View file

@ -0,0 +1,14 @@
{
"jsonrpc": "2.0",
"id": 2,
"method": "textDocument/hover",
"params": {
"textDocument": {
"uri": "file:///a/file.ts"
},
"position": {
"line": 421,
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}

View file

@ -0,0 +1,14 @@
{
"jsonrpc": "2.0",
"id": 2,
"method": "textDocument/hover",
"params": {
"textDocument": {
"uri": "file:///a/file.ts"
},
"position": {
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"character": 6
}
}
}

View file

@ -0,0 +1,14 @@
{
"jsonrpc": "2.0",
"id": 2,
"method": "textDocument/hover",
"params": {
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"uri": "file:///a/file.ts"
},
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"character": 34
}
}
}

View file

@ -0,0 +1,6 @@
{
"jsonrpc": "2.0",
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"method": "deno/performance",
"params": {}
}