1pub mod extension_builder;
2mod extension_lsp_adapter;
3mod extension_manifest;
4mod wasm_host;
5
6#[cfg(test)]
7mod extension_store_test;
8
9use crate::{extension_lsp_adapter::ExtensionLspAdapter, wasm_host::wit};
10use anyhow::{anyhow, bail, Context as _, Result};
11use async_compression::futures::bufread::GzipDecoder;
12use async_tar::Archive;
13use client::{telemetry::Telemetry, Client};
14use collections::{hash_map, BTreeMap, HashMap, HashSet};
15use extension_builder::{CompileExtensionOptions, ExtensionBuilder};
16use fs::{Fs, RemoveOptions};
17use futures::{
18 channel::{
19 mpsc::{unbounded, UnboundedSender},
20 oneshot,
21 },
22 io::BufReader,
23 select_biased, AsyncReadExt as _, Future, FutureExt as _, StreamExt as _,
24};
25use gpui::{actions, AppContext, Context, EventEmitter, Global, Model, ModelContext, Task};
26use language::{
27 ContextProviderWithTasks, LanguageConfig, LanguageMatcher, LanguageQueries, LanguageRegistry,
28 QUERY_FILENAME_PREFIXES,
29};
30use node_runtime::NodeRuntime;
31use serde::{Deserialize, Serialize};
32use std::{
33 cmp::Ordering,
34 path::{self, Path, PathBuf},
35 sync::Arc,
36 time::{Duration, Instant},
37};
38use theme::{ThemeRegistry, ThemeSettings};
39use url::Url;
40use util::{
41 http::{AsyncBody, HttpClient, HttpClientWithUrl},
42 maybe,
43 paths::EXTENSIONS_DIR,
44 ResultExt,
45};
46use wasm_host::{WasmExtension, WasmHost};
47
48pub use extension_manifest::{
49 ExtensionLibraryKind, ExtensionManifest, GrammarManifestEntry, OldExtensionManifest,
50};
51
52const RELOAD_DEBOUNCE_DURATION: Duration = Duration::from_millis(200);
53const FS_WATCH_LATENCY: Duration = Duration::from_millis(100);
54
55const CURRENT_SCHEMA_VERSION: i64 = 1;
56
57#[derive(Deserialize)]
58pub struct ExtensionsApiResponse {
59 pub data: Vec<ExtensionApiResponse>,
60}
61
62#[derive(Clone, Deserialize)]
63pub struct ExtensionApiResponse {
64 pub id: Arc<str>,
65 pub name: String,
66 pub version: Arc<str>,
67 pub description: Option<String>,
68 pub authors: Vec<String>,
69 pub repository: String,
70 pub download_count: usize,
71}
72
73pub struct ExtensionStore {
74 builder: Arc<ExtensionBuilder>,
75 extension_index: ExtensionIndex,
76 fs: Arc<dyn Fs>,
77 http_client: Arc<HttpClientWithUrl>,
78 telemetry: Option<Arc<Telemetry>>,
79 reload_tx: UnboundedSender<Option<Arc<str>>>,
80 reload_complete_senders: Vec<oneshot::Sender<()>>,
81 installed_dir: PathBuf,
82 outstanding_operations: HashMap<Arc<str>, ExtensionOperation>,
83 index_path: PathBuf,
84 language_registry: Arc<LanguageRegistry>,
85 theme_registry: Arc<ThemeRegistry>,
86 modified_extensions: HashSet<Arc<str>>,
87 wasm_host: Arc<WasmHost>,
88 wasm_extensions: Vec<(Arc<ExtensionManifest>, WasmExtension)>,
89 tasks: Vec<Task<()>>,
90}
91
92#[derive(Clone)]
93pub enum ExtensionStatus {
94 NotInstalled,
95 Installing,
96 Upgrading,
97 Installed(Arc<str>),
98 Removing,
99}
100
101#[derive(Clone, Copy)]
102enum ExtensionOperation {
103 Upgrade,
104 Install,
105 Remove,
106}
107
108#[derive(Clone)]
109pub enum Event {
110 ExtensionsUpdated,
111 StartedReloading,
112 ExtensionInstalled(Arc<str>),
113 ExtensionFailedToLoad(Arc<str>),
114}
115
116impl EventEmitter<Event> for ExtensionStore {}
117
118struct GlobalExtensionStore(Model<ExtensionStore>);
119
120impl Global for GlobalExtensionStore {}
121
122#[derive(Debug, Deserialize, Serialize, Default, PartialEq, Eq)]
123pub struct ExtensionIndex {
124 pub extensions: BTreeMap<Arc<str>, ExtensionIndexEntry>,
125 pub themes: BTreeMap<Arc<str>, ExtensionIndexThemeEntry>,
126 pub languages: BTreeMap<Arc<str>, ExtensionIndexLanguageEntry>,
127}
128
129#[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
130pub struct ExtensionIndexEntry {
131 manifest: Arc<ExtensionManifest>,
132 dev: bool,
133}
134
135#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Deserialize, Serialize)]
136pub struct ExtensionIndexThemeEntry {
137 extension: Arc<str>,
138 path: PathBuf,
139}
140
141#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Deserialize, Serialize)]
142pub struct ExtensionIndexLanguageEntry {
143 extension: Arc<str>,
144 path: PathBuf,
145 matcher: LanguageMatcher,
146 grammar: Option<Arc<str>>,
147}
148
149actions!(zed, [ReloadExtensions]);
150
151pub fn init(
152 fs: Arc<fs::RealFs>,
153 client: Arc<Client>,
154 node_runtime: Arc<dyn NodeRuntime>,
155 language_registry: Arc<LanguageRegistry>,
156 theme_registry: Arc<ThemeRegistry>,
157 cx: &mut AppContext,
158) {
159 let store = cx.new_model(move |cx| {
160 ExtensionStore::new(
161 EXTENSIONS_DIR.clone(),
162 None,
163 fs,
164 client.http_client().clone(),
165 Some(client.telemetry().clone()),
166 node_runtime,
167 language_registry,
168 theme_registry,
169 cx,
170 )
171 });
172
173 cx.on_action(|_: &ReloadExtensions, cx| {
174 let store = cx.global::<GlobalExtensionStore>().0.clone();
175 store.update(cx, |store, cx| drop(store.reload(None, cx)));
176 });
177
178 cx.set_global(GlobalExtensionStore(store));
179}
180
181impl ExtensionStore {
182 pub fn global(cx: &AppContext) -> Model<Self> {
183 cx.global::<GlobalExtensionStore>().0.clone()
184 }
185
186 #[allow(clippy::too_many_arguments)]
187 pub fn new(
188 extensions_dir: PathBuf,
189 build_dir: Option<PathBuf>,
190 fs: Arc<dyn Fs>,
191 http_client: Arc<HttpClientWithUrl>,
192 telemetry: Option<Arc<Telemetry>>,
193 node_runtime: Arc<dyn NodeRuntime>,
194 language_registry: Arc<LanguageRegistry>,
195 theme_registry: Arc<ThemeRegistry>,
196 cx: &mut ModelContext<Self>,
197 ) -> Self {
198 let work_dir = extensions_dir.join("work");
199 let build_dir = build_dir.unwrap_or_else(|| extensions_dir.join("build"));
200 let installed_dir = extensions_dir.join("installed");
201 let index_path = extensions_dir.join("index.json");
202
203 let (reload_tx, mut reload_rx) = unbounded();
204 let mut this = Self {
205 extension_index: Default::default(),
206 installed_dir,
207 index_path,
208 builder: Arc::new(ExtensionBuilder::new(build_dir)),
209 outstanding_operations: Default::default(),
210 modified_extensions: Default::default(),
211 reload_complete_senders: Vec::new(),
212 wasm_host: WasmHost::new(
213 fs.clone(),
214 http_client.clone(),
215 node_runtime,
216 language_registry.clone(),
217 work_dir,
218 ),
219 wasm_extensions: Vec::new(),
220 fs,
221 http_client,
222 telemetry,
223 language_registry,
224 theme_registry,
225 reload_tx,
226 tasks: Vec::new(),
227 };
228
229 // The extensions store maintains an index file, which contains a complete
230 // list of the installed extensions and the resources that they provide.
231 // This index is loaded synchronously on startup.
232 let (index_content, index_metadata, extensions_metadata) =
233 cx.background_executor().block(async {
234 futures::join!(
235 this.fs.load(&this.index_path),
236 this.fs.metadata(&this.index_path),
237 this.fs.metadata(&this.installed_dir),
238 )
239 });
240
241 // Normally, there is no need to rebuild the index. But if the index file
242 // is invalid or is out-of-date according to the filesystem mtimes, then
243 // it must be asynchronously rebuilt.
244 let mut extension_index = ExtensionIndex::default();
245 let mut extension_index_needs_rebuild = true;
246 if let Some(index_content) = index_content.ok() {
247 if let Some(index) = serde_json::from_str(&index_content).log_err() {
248 extension_index = index;
249 if let (Ok(Some(index_metadata)), Ok(Some(extensions_metadata))) =
250 (index_metadata, extensions_metadata)
251 {
252 if index_metadata.mtime > extensions_metadata.mtime {
253 extension_index_needs_rebuild = false;
254 }
255 }
256 }
257 }
258
259 // Immediately load all of the extensions in the initial manifest. If the
260 // index needs to be rebuild, then enqueue
261 let load_initial_extensions = this.extensions_updated(extension_index, cx);
262 if extension_index_needs_rebuild {
263 let _ = this.reload(None, cx);
264 }
265
266 // Perform all extension loading in a single task to ensure that we
267 // never attempt to simultaneously load/unload extensions from multiple
268 // parallel tasks.
269 this.tasks.push(cx.spawn(|this, mut cx| {
270 async move {
271 load_initial_extensions.await;
272
273 let mut debounce_timer = cx
274 .background_executor()
275 .spawn(futures::future::pending())
276 .fuse();
277 loop {
278 select_biased! {
279 _ = debounce_timer => {
280 let index = this
281 .update(&mut cx, |this, cx| this.rebuild_extension_index(cx))?
282 .await;
283 this.update(&mut cx, |this, cx| this.extensions_updated(index, cx))?
284 .await;
285 }
286 extension_id = reload_rx.next() => {
287 let Some(extension_id) = extension_id else { break; };
288 this.update(&mut cx, |this, _| {
289 this.modified_extensions.extend(extension_id);
290 })?;
291 debounce_timer = cx
292 .background_executor()
293 .timer(RELOAD_DEBOUNCE_DURATION)
294 .fuse();
295 }
296 }
297 }
298
299 anyhow::Ok(())
300 }
301 .map(drop)
302 }));
303
304 // Watch the installed extensions directory for changes. Whenever changes are
305 // detected, rebuild the extension index, and load/unload any extensions that
306 // have been added, removed, or modified.
307 this.tasks.push(cx.background_executor().spawn({
308 let fs = this.fs.clone();
309 let reload_tx = this.reload_tx.clone();
310 let installed_dir = this.installed_dir.clone();
311 async move {
312 let mut paths = fs.watch(&installed_dir, FS_WATCH_LATENCY).await;
313 while let Some(paths) = paths.next().await {
314 for path in paths {
315 let Ok(event_path) = path.strip_prefix(&installed_dir) else {
316 continue;
317 };
318
319 if let Some(path::Component::Normal(extension_dir_name)) =
320 event_path.components().next()
321 {
322 if let Some(extension_id) = extension_dir_name.to_str() {
323 reload_tx.unbounded_send(Some(extension_id.into())).ok();
324 }
325 }
326 }
327 }
328 }
329 }));
330
331 this
332 }
333
334 fn reload(
335 &mut self,
336 modified_extension: Option<Arc<str>>,
337 cx: &mut ModelContext<Self>,
338 ) -> impl Future<Output = ()> {
339 let (tx, rx) = oneshot::channel();
340 self.reload_complete_senders.push(tx);
341 self.reload_tx
342 .unbounded_send(modified_extension)
343 .expect("reload task exited");
344 cx.emit(Event::StartedReloading);
345
346 async move {
347 rx.await.ok();
348 }
349 }
350
351 fn extensions_dir(&self) -> PathBuf {
352 self.installed_dir.clone()
353 }
354
355 pub fn extension_status(&self, extension_id: &str) -> ExtensionStatus {
356 match self.outstanding_operations.get(extension_id) {
357 Some(ExtensionOperation::Install) => ExtensionStatus::Installing,
358 Some(ExtensionOperation::Remove) => ExtensionStatus::Removing,
359 Some(ExtensionOperation::Upgrade) => ExtensionStatus::Upgrading,
360 None => match self.extension_index.extensions.get(extension_id) {
361 Some(extension) => ExtensionStatus::Installed(extension.manifest.version.clone()),
362 None => ExtensionStatus::NotInstalled,
363 },
364 }
365 }
366
367 pub fn dev_extensions(&self) -> impl Iterator<Item = &Arc<ExtensionManifest>> {
368 self.extension_index
369 .extensions
370 .values()
371 .filter_map(|extension| extension.dev.then_some(&extension.manifest))
372 }
373
374 /// Returns the names of themes provided by extensions.
375 pub fn extension_themes<'a>(
376 &'a self,
377 extension_id: &'a str,
378 ) -> impl Iterator<Item = &'a Arc<str>> {
379 self.extension_index
380 .themes
381 .iter()
382 .filter_map(|(name, theme)| theme.extension.as_ref().eq(extension_id).then_some(name))
383 }
384
385 pub fn fetch_extensions(
386 &self,
387 search: Option<&str>,
388 cx: &mut ModelContext<Self>,
389 ) -> Task<Result<Vec<ExtensionApiResponse>>> {
390 let version = CURRENT_SCHEMA_VERSION.to_string();
391 let mut query = vec![("max_schema_version", version.as_str())];
392 if let Some(search) = search {
393 query.push(("filter", search));
394 }
395
396 let url = self.http_client.build_zed_api_url("/extensions", &query);
397 let http_client = self.http_client.clone();
398 cx.spawn(move |_, _| async move {
399 let mut response = http_client
400 .get(&url?.as_ref(), AsyncBody::empty(), true)
401 .await?;
402
403 let mut body = Vec::new();
404 response
405 .body_mut()
406 .read_to_end(&mut body)
407 .await
408 .context("error reading extensions")?;
409
410 if response.status().is_client_error() {
411 let text = String::from_utf8_lossy(body.as_slice());
412 bail!(
413 "status error {}, response: {text:?}",
414 response.status().as_u16()
415 );
416 }
417
418 let response: ExtensionsApiResponse = serde_json::from_slice(&body)?;
419
420 Ok(response.data)
421 })
422 }
423
424 pub fn install_extension(
425 &mut self,
426 extension_id: Arc<str>,
427 version: Arc<str>,
428 cx: &mut ModelContext<Self>,
429 ) {
430 self.install_or_upgrade_extension(extension_id, version, ExtensionOperation::Install, cx)
431 }
432
433 fn install_or_upgrade_extension_at_endpoint(
434 &mut self,
435 extension_id: Arc<str>,
436 url: Url,
437 operation: ExtensionOperation,
438 cx: &mut ModelContext<Self>,
439 ) {
440 let extension_dir = self.installed_dir.join(extension_id.as_ref());
441 let http_client = self.http_client.clone();
442 let fs = self.fs.clone();
443
444 match self.outstanding_operations.entry(extension_id.clone()) {
445 hash_map::Entry::Occupied(_) => return,
446 hash_map::Entry::Vacant(e) => e.insert(operation),
447 };
448
449 cx.spawn(move |this, mut cx| async move {
450 let _finish = util::defer({
451 let this = this.clone();
452 let mut cx = cx.clone();
453 let extension_id = extension_id.clone();
454 move || {
455 this.update(&mut cx, |this, cx| {
456 this.outstanding_operations.remove(extension_id.as_ref());
457 cx.notify();
458 })
459 .ok();
460 }
461 });
462
463 let mut response = http_client
464 .get(&url.as_ref(), Default::default(), true)
465 .await
466 .map_err(|err| anyhow!("error downloading extension: {}", err))?;
467
468 fs.remove_dir(
469 &extension_dir,
470 RemoveOptions {
471 recursive: true,
472 ignore_if_not_exists: true,
473 },
474 )
475 .await?;
476
477 let decompressed_bytes = GzipDecoder::new(BufReader::new(response.body_mut()));
478 let archive = Archive::new(decompressed_bytes);
479 archive.unpack(extension_dir).await?;
480 this.update(&mut cx, |this, cx| {
481 this.reload(Some(extension_id.clone()), cx)
482 })?
483 .await;
484
485 match operation {
486 ExtensionOperation::Install => {
487 this.update(&mut cx, |_, cx| {
488 cx.emit(Event::ExtensionInstalled(extension_id));
489 })
490 .ok();
491 }
492 _ => {}
493 }
494
495 anyhow::Ok(())
496 })
497 .detach_and_log_err(cx);
498 }
499
500 pub fn install_latest_extension(
501 &mut self,
502 extension_id: Arc<str>,
503 cx: &mut ModelContext<Self>,
504 ) {
505 log::info!("installing extension {extension_id} latest version");
506
507 let Some(url) = self
508 .http_client
509 .build_zed_api_url(&format!("/extensions/{extension_id}/download"), &[])
510 .log_err()
511 else {
512 return;
513 };
514
515 self.install_or_upgrade_extension_at_endpoint(
516 extension_id,
517 url,
518 ExtensionOperation::Install,
519 cx,
520 );
521 }
522
523 pub fn upgrade_extension(
524 &mut self,
525 extension_id: Arc<str>,
526 version: Arc<str>,
527 cx: &mut ModelContext<Self>,
528 ) {
529 self.install_or_upgrade_extension(extension_id, version, ExtensionOperation::Upgrade, cx)
530 }
531
532 fn install_or_upgrade_extension(
533 &mut self,
534 extension_id: Arc<str>,
535 version: Arc<str>,
536 operation: ExtensionOperation,
537 cx: &mut ModelContext<Self>,
538 ) {
539 log::info!("installing extension {extension_id} {version}");
540 let Some(url) = self
541 .http_client
542 .build_zed_api_url(
543 &format!("/extensions/{extension_id}/{version}/download"),
544 &[],
545 )
546 .log_err()
547 else {
548 return;
549 };
550
551 self.install_or_upgrade_extension_at_endpoint(extension_id, url, operation, cx);
552 }
553
554 pub fn uninstall_extension(&mut self, extension_id: Arc<str>, cx: &mut ModelContext<Self>) {
555 let extension_dir = self.installed_dir.join(extension_id.as_ref());
556 let fs = self.fs.clone();
557
558 match self.outstanding_operations.entry(extension_id.clone()) {
559 hash_map::Entry::Occupied(_) => return,
560 hash_map::Entry::Vacant(e) => e.insert(ExtensionOperation::Remove),
561 };
562
563 cx.spawn(move |this, mut cx| async move {
564 let _finish = util::defer({
565 let this = this.clone();
566 let mut cx = cx.clone();
567 let extension_id = extension_id.clone();
568 move || {
569 this.update(&mut cx, |this, cx| {
570 this.outstanding_operations.remove(extension_id.as_ref());
571 cx.notify();
572 })
573 .ok();
574 }
575 });
576
577 fs.remove_dir(
578 &extension_dir,
579 RemoveOptions {
580 recursive: true,
581 ignore_if_not_exists: true,
582 },
583 )
584 .await?;
585
586 this.update(&mut cx, |this, cx| this.reload(None, cx))?
587 .await;
588 anyhow::Ok(())
589 })
590 .detach_and_log_err(cx)
591 }
592
593 pub fn install_dev_extension(
594 &mut self,
595 extension_source_path: PathBuf,
596 cx: &mut ModelContext<Self>,
597 ) -> Task<Result<()>> {
598 let extensions_dir = self.extensions_dir();
599 let fs = self.fs.clone();
600 let builder = self.builder.clone();
601
602 cx.spawn(move |this, mut cx| async move {
603 let mut extension_manifest =
604 ExtensionManifest::load(fs.clone(), &extension_source_path).await?;
605 let extension_id = extension_manifest.id.clone();
606
607 if !this.update(&mut cx, |this, cx| {
608 match this.outstanding_operations.entry(extension_id.clone()) {
609 hash_map::Entry::Occupied(_) => return false,
610 hash_map::Entry::Vacant(e) => e.insert(ExtensionOperation::Remove),
611 };
612 cx.notify();
613 true
614 })? {
615 return Ok(());
616 }
617
618 let _finish = util::defer({
619 let this = this.clone();
620 let mut cx = cx.clone();
621 let extension_id = extension_id.clone();
622 move || {
623 this.update(&mut cx, |this, cx| {
624 this.outstanding_operations.remove(extension_id.as_ref());
625 cx.notify();
626 })
627 .ok();
628 }
629 });
630
631 cx.background_executor()
632 .spawn({
633 let extension_source_path = extension_source_path.clone();
634 async move {
635 builder
636 .compile_extension(
637 &extension_source_path,
638 &mut extension_manifest,
639 CompileExtensionOptions { release: false },
640 )
641 .await
642 }
643 })
644 .await?;
645
646 let output_path = &extensions_dir.join(extension_id.as_ref());
647 if let Some(metadata) = fs.metadata(&output_path).await? {
648 if metadata.is_symlink {
649 fs.remove_file(
650 &output_path,
651 RemoveOptions {
652 recursive: false,
653 ignore_if_not_exists: true,
654 },
655 )
656 .await?;
657 } else {
658 bail!("extension {extension_id} is already installed");
659 }
660 }
661
662 fs.create_symlink(output_path, extension_source_path)
663 .await?;
664
665 this.update(&mut cx, |this, cx| this.reload(None, cx))?
666 .await;
667 Ok(())
668 })
669 }
670
671 pub fn rebuild_dev_extension(&mut self, extension_id: Arc<str>, cx: &mut ModelContext<Self>) {
672 let path = self.installed_dir.join(extension_id.as_ref());
673 let builder = self.builder.clone();
674 let fs = self.fs.clone();
675
676 match self.outstanding_operations.entry(extension_id.clone()) {
677 hash_map::Entry::Occupied(_) => return,
678 hash_map::Entry::Vacant(e) => e.insert(ExtensionOperation::Upgrade),
679 };
680
681 cx.notify();
682 let compile = cx.background_executor().spawn(async move {
683 let mut manifest = ExtensionManifest::load(fs, &path).await?;
684 builder
685 .compile_extension(
686 &path,
687 &mut manifest,
688 CompileExtensionOptions { release: true },
689 )
690 .await
691 });
692
693 cx.spawn(|this, mut cx| async move {
694 let result = compile.await;
695
696 this.update(&mut cx, |this, cx| {
697 this.outstanding_operations.remove(&extension_id);
698 cx.notify();
699 })?;
700
701 if result.is_ok() {
702 this.update(&mut cx, |this, cx| this.reload(Some(extension_id), cx))?
703 .await;
704 }
705
706 result
707 })
708 .detach_and_log_err(cx)
709 }
710
711 /// Updates the set of installed extensions.
712 ///
713 /// First, this unloads any themes, languages, or grammars that are
714 /// no longer in the manifest, or whose files have changed on disk.
715 /// Then it loads any themes, languages, or grammars that are newly
716 /// added to the manifest, or whose files have changed on disk.
717 fn extensions_updated(
718 &mut self,
719 new_index: ExtensionIndex,
720 cx: &mut ModelContext<Self>,
721 ) -> Task<()> {
722 let old_index = &self.extension_index;
723
724 // Determine which extensions need to be loaded and unloaded, based
725 // on the changes to the manifest and the extensions that we know have been
726 // modified.
727 let mut extensions_to_unload = Vec::default();
728 let mut extensions_to_load = Vec::default();
729 {
730 let mut old_keys = old_index.extensions.iter().peekable();
731 let mut new_keys = new_index.extensions.iter().peekable();
732 loop {
733 match (old_keys.peek(), new_keys.peek()) {
734 (None, None) => break,
735 (None, Some(_)) => {
736 extensions_to_load.push(new_keys.next().unwrap().0.clone());
737 }
738 (Some(_), None) => {
739 extensions_to_unload.push(old_keys.next().unwrap().0.clone());
740 }
741 (Some((old_key, _)), Some((new_key, _))) => match old_key.cmp(&new_key) {
742 Ordering::Equal => {
743 let (old_key, old_value) = old_keys.next().unwrap();
744 let (new_key, new_value) = new_keys.next().unwrap();
745 if old_value != new_value || self.modified_extensions.contains(old_key)
746 {
747 extensions_to_unload.push(old_key.clone());
748 extensions_to_load.push(new_key.clone());
749 }
750 }
751 Ordering::Less => {
752 extensions_to_unload.push(old_keys.next().unwrap().0.clone());
753 }
754 Ordering::Greater => {
755 extensions_to_load.push(new_keys.next().unwrap().0.clone());
756 }
757 },
758 }
759 }
760 self.modified_extensions.clear();
761 }
762
763 if extensions_to_load.is_empty() && extensions_to_unload.is_empty() {
764 return Task::ready(());
765 }
766
767 let reload_count = extensions_to_unload
768 .iter()
769 .filter(|id| extensions_to_load.contains(id))
770 .count();
771
772 log::info!(
773 "extensions updated. loading {}, reloading {}, unloading {}",
774 extensions_to_load.len() - reload_count,
775 reload_count,
776 extensions_to_unload.len() - reload_count
777 );
778
779 if let Some(telemetry) = &self.telemetry {
780 for extension_id in &extensions_to_load {
781 if let Some(extension) = self.extension_index.extensions.get(extension_id) {
782 telemetry.report_extension_event(
783 extension_id.clone(),
784 extension.manifest.version.clone(),
785 );
786 }
787 }
788 }
789
790 let themes_to_remove = old_index
791 .themes
792 .iter()
793 .filter_map(|(name, entry)| {
794 if extensions_to_unload.contains(&entry.extension) {
795 Some(name.clone().into())
796 } else {
797 None
798 }
799 })
800 .collect::<Vec<_>>();
801 let languages_to_remove = old_index
802 .languages
803 .iter()
804 .filter_map(|(name, entry)| {
805 if extensions_to_unload.contains(&entry.extension) {
806 Some(name.clone())
807 } else {
808 None
809 }
810 })
811 .collect::<Vec<_>>();
812 let mut grammars_to_remove = Vec::new();
813 for extension_id in &extensions_to_unload {
814 let Some(extension) = old_index.extensions.get(extension_id) else {
815 continue;
816 };
817 grammars_to_remove.extend(extension.manifest.grammars.keys().cloned());
818 for (language_server_name, config) in extension.manifest.language_servers.iter() {
819 self.language_registry
820 .remove_lsp_adapter(config.language.as_ref(), language_server_name);
821 }
822 }
823
824 self.wasm_extensions
825 .retain(|(extension, _)| !extensions_to_unload.contains(&extension.id));
826 self.theme_registry.remove_user_themes(&themes_to_remove);
827 self.language_registry
828 .remove_languages(&languages_to_remove, &grammars_to_remove);
829
830 let languages_to_add = new_index
831 .languages
832 .iter()
833 .filter(|(_, entry)| extensions_to_load.contains(&entry.extension))
834 .collect::<Vec<_>>();
835 let mut grammars_to_add = Vec::new();
836 let mut themes_to_add = Vec::new();
837 for extension_id in &extensions_to_load {
838 let Some(extension) = new_index.extensions.get(extension_id) else {
839 continue;
840 };
841
842 grammars_to_add.extend(extension.manifest.grammars.keys().map(|grammar_name| {
843 let mut grammar_path = self.installed_dir.clone();
844 grammar_path.extend([extension_id.as_ref(), "grammars"]);
845 grammar_path.push(grammar_name.as_ref());
846 grammar_path.set_extension("wasm");
847 (grammar_name.clone(), grammar_path)
848 }));
849 themes_to_add.extend(extension.manifest.themes.iter().map(|theme_path| {
850 let mut path = self.installed_dir.clone();
851 path.extend([Path::new(extension_id.as_ref()), theme_path.as_path()]);
852 path
853 }));
854 }
855
856 self.language_registry
857 .register_wasm_grammars(grammars_to_add);
858
859 for (language_name, language) in languages_to_add {
860 let mut language_path = self.installed_dir.clone();
861 language_path.extend([
862 Path::new(language.extension.as_ref()),
863 language.path.as_path(),
864 ]);
865 self.language_registry.register_language(
866 language_name.clone(),
867 language.grammar.clone(),
868 language.matcher.clone(),
869 move || {
870 let config = std::fs::read_to_string(language_path.join("config.toml"))?;
871 let config: LanguageConfig = ::toml::from_str(&config)?;
872 let queries = load_plugin_queries(&language_path);
873 let tasks = std::fs::read_to_string(language_path.join("tasks.json"))
874 .ok()
875 .and_then(|contents| {
876 let definitions = serde_json_lenient::from_str(&contents).log_err()?;
877 Some(Arc::new(ContextProviderWithTasks::new(definitions)) as Arc<_>)
878 });
879
880 Ok((config, queries, tasks))
881 },
882 );
883 }
884
885 let fs = self.fs.clone();
886 let wasm_host = self.wasm_host.clone();
887 let root_dir = self.installed_dir.clone();
888 let theme_registry = self.theme_registry.clone();
889 let extension_entries = extensions_to_load
890 .iter()
891 .filter_map(|name| new_index.extensions.get(name).cloned())
892 .collect::<Vec<_>>();
893
894 self.extension_index = new_index;
895 cx.notify();
896 cx.emit(Event::ExtensionsUpdated);
897
898 cx.spawn(|this, mut cx| async move {
899 cx.background_executor()
900 .spawn({
901 let fs = fs.clone();
902 async move {
903 for theme_path in &themes_to_add {
904 theme_registry
905 .load_user_theme(&theme_path, fs.clone())
906 .await
907 .log_err();
908 }
909 }
910 })
911 .await;
912
913 let mut wasm_extensions = Vec::new();
914 for extension in extension_entries {
915 if extension.manifest.lib.kind.is_none() {
916 continue;
917 };
918
919 let wasm_extension = maybe!(async {
920 let mut path = root_dir.clone();
921 path.extend([extension.manifest.clone().id.as_ref(), "extension.wasm"]);
922 let mut wasm_file = fs
923 .open_sync(&path)
924 .await
925 .context("failed to open wasm file")?;
926
927 let mut wasm_bytes = Vec::new();
928 wasm_file
929 .read_to_end(&mut wasm_bytes)
930 .context("failed to read wasm")?;
931
932 wasm_host
933 .load_extension(
934 wasm_bytes,
935 extension.manifest.clone().clone(),
936 cx.background_executor().clone(),
937 )
938 .await
939 .with_context(|| {
940 format!("failed to load wasm extension {}", extension.manifest.id)
941 })
942 })
943 .await;
944
945 if let Some(wasm_extension) = wasm_extension.log_err() {
946 wasm_extensions.push((extension.manifest.clone(), wasm_extension));
947 } else {
948 this.update(&mut cx, |_, cx| {
949 cx.emit(Event::ExtensionFailedToLoad(extension.manifest.id.clone()))
950 })
951 .ok();
952 }
953 }
954
955 this.update(&mut cx, |this, cx| {
956 this.reload_complete_senders.clear();
957
958 for (manifest, wasm_extension) in &wasm_extensions {
959 for (language_server_name, language_server_config) in &manifest.language_servers
960 {
961 this.language_registry.register_lsp_adapter(
962 language_server_config.language.clone(),
963 Arc::new(ExtensionLspAdapter {
964 extension: wasm_extension.clone(),
965 host: this.wasm_host.clone(),
966 config: wit::LanguageServerConfig {
967 name: language_server_name.0.to_string(),
968 language_name: language_server_config.language.to_string(),
969 },
970 }),
971 );
972 }
973 }
974 this.wasm_extensions.extend(wasm_extensions);
975 ThemeSettings::reload_current_theme(cx)
976 })
977 .ok();
978 })
979 }
980
981 fn rebuild_extension_index(&self, cx: &mut ModelContext<Self>) -> Task<ExtensionIndex> {
982 let fs = self.fs.clone();
983 let work_dir = self.wasm_host.work_dir.clone();
984 let extensions_dir = self.installed_dir.clone();
985 let index_path = self.index_path.clone();
986 cx.background_executor().spawn(async move {
987 let start_time = Instant::now();
988 let mut index = ExtensionIndex::default();
989
990 fs.create_dir(&work_dir).await.log_err();
991 fs.create_dir(&extensions_dir).await.log_err();
992
993 let extension_paths = fs.read_dir(&extensions_dir).await;
994 if let Ok(mut extension_paths) = extension_paths {
995 while let Some(extension_dir) = extension_paths.next().await {
996 let Ok(extension_dir) = extension_dir else {
997 continue;
998 };
999 Self::add_extension_to_index(fs.clone(), extension_dir, &mut index)
1000 .await
1001 .log_err();
1002 }
1003 }
1004
1005 if let Ok(index_json) = serde_json::to_string_pretty(&index) {
1006 fs.save(&index_path, &index_json.as_str().into(), Default::default())
1007 .await
1008 .context("failed to save extension index")
1009 .log_err();
1010 }
1011
1012 log::info!("rebuilt extension index in {:?}", start_time.elapsed());
1013 index
1014 })
1015 }
1016
1017 async fn add_extension_to_index(
1018 fs: Arc<dyn Fs>,
1019 extension_dir: PathBuf,
1020 index: &mut ExtensionIndex,
1021 ) -> Result<()> {
1022 let mut extension_manifest = ExtensionManifest::load(fs.clone(), &extension_dir).await?;
1023 let extension_id = extension_manifest.id.clone();
1024
1025 // TODO: distinguish dev extensions more explicitly, by the absence
1026 // of a checksum file that we'll create when downloading normal extensions.
1027 let is_dev = fs
1028 .metadata(&extension_dir)
1029 .await?
1030 .ok_or_else(|| anyhow!("directory does not exist"))?
1031 .is_symlink;
1032
1033 if let Ok(mut language_paths) = fs.read_dir(&extension_dir.join("languages")).await {
1034 while let Some(language_path) = language_paths.next().await {
1035 let language_path = language_path?;
1036 let Ok(relative_path) = language_path.strip_prefix(&extension_dir) else {
1037 continue;
1038 };
1039 let Ok(Some(fs_metadata)) = fs.metadata(&language_path).await else {
1040 continue;
1041 };
1042 if !fs_metadata.is_dir {
1043 continue;
1044 }
1045 let config = fs.load(&language_path.join("config.toml")).await?;
1046 let config = ::toml::from_str::<LanguageConfig>(&config)?;
1047
1048 let relative_path = relative_path.to_path_buf();
1049 if !extension_manifest.languages.contains(&relative_path) {
1050 extension_manifest.languages.push(relative_path.clone());
1051 }
1052
1053 index.languages.insert(
1054 config.name.clone(),
1055 ExtensionIndexLanguageEntry {
1056 extension: extension_id.clone(),
1057 path: relative_path,
1058 matcher: config.matcher,
1059 grammar: config.grammar,
1060 },
1061 );
1062 }
1063 }
1064
1065 if let Ok(mut theme_paths) = fs.read_dir(&extension_dir.join("themes")).await {
1066 while let Some(theme_path) = theme_paths.next().await {
1067 let theme_path = theme_path?;
1068 let Ok(relative_path) = theme_path.strip_prefix(&extension_dir) else {
1069 continue;
1070 };
1071
1072 let Some(theme_family) = ThemeRegistry::read_user_theme(&theme_path, fs.clone())
1073 .await
1074 .log_err()
1075 else {
1076 continue;
1077 };
1078
1079 let relative_path = relative_path.to_path_buf();
1080 if !extension_manifest.themes.contains(&relative_path) {
1081 extension_manifest.themes.push(relative_path.clone());
1082 }
1083
1084 for theme in theme_family.themes {
1085 index.themes.insert(
1086 theme.name.into(),
1087 ExtensionIndexThemeEntry {
1088 extension: extension_id.clone(),
1089 path: relative_path.clone(),
1090 },
1091 );
1092 }
1093 }
1094 }
1095
1096 let extension_wasm_path = extension_dir.join("extension.wasm");
1097 if fs.is_file(&extension_wasm_path).await {
1098 extension_manifest
1099 .lib
1100 .kind
1101 .get_or_insert(ExtensionLibraryKind::Rust);
1102 }
1103
1104 index.extensions.insert(
1105 extension_id.clone(),
1106 ExtensionIndexEntry {
1107 dev: is_dev,
1108 manifest: Arc::new(extension_manifest),
1109 },
1110 );
1111
1112 Ok(())
1113 }
1114}
1115
1116fn load_plugin_queries(root_path: &Path) -> LanguageQueries {
1117 let mut result = LanguageQueries::default();
1118 if let Some(entries) = std::fs::read_dir(root_path).log_err() {
1119 for entry in entries {
1120 let Some(entry) = entry.log_err() else {
1121 continue;
1122 };
1123 let path = entry.path();
1124 if let Some(remainder) = path.strip_prefix(root_path).ok().and_then(|p| p.to_str()) {
1125 if !remainder.ends_with(".scm") {
1126 continue;
1127 }
1128 for (name, query) in QUERY_FILENAME_PREFIXES {
1129 if remainder.starts_with(name) {
1130 if let Some(contents) = std::fs::read_to_string(&path).log_err() {
1131 match query(&mut result) {
1132 None => *query(&mut result) = Some(contents.into()),
1133 Some(r) => r.to_mut().push_str(contents.as_ref()),
1134 }
1135 }
1136 break;
1137 }
1138 }
1139 }
1140 }
1141 }
1142 result
1143}