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 collections::{hash_map, BTreeMap, HashMap, HashSet};
14use extension_builder::{CompileExtensionOptions, ExtensionBuilder};
15use fs::{Fs, RemoveOptions};
16use futures::{
17 channel::{
18 mpsc::{unbounded, UnboundedSender},
19 oneshot,
20 },
21 io::BufReader,
22 select_biased, AsyncReadExt as _, Future, FutureExt as _, StreamExt as _,
23};
24use gpui::{actions, AppContext, Context, EventEmitter, Global, Model, ModelContext, Task};
25use language::{
26 LanguageConfig, LanguageMatcher, LanguageQueries, LanguageRegistry, QUERY_FILENAME_PREFIXES,
27};
28use node_runtime::NodeRuntime;
29use serde::{Deserialize, Serialize};
30use std::{
31 cmp::Ordering,
32 ffi::OsStr,
33 path::{self, Path, PathBuf},
34 sync::Arc,
35 time::{Duration, Instant},
36};
37use theme::{ThemeRegistry, ThemeSettings};
38use util::{
39 http::{AsyncBody, HttpClient, HttpClientWithUrl},
40 paths::EXTENSIONS_DIR,
41 ResultExt,
42};
43use wasm_host::{WasmExtension, WasmHost};
44
45pub use extension_manifest::{
46 ExtensionLibraryKind, ExtensionManifest, GrammarManifestEntry, OldExtensionManifest,
47};
48
49const RELOAD_DEBOUNCE_DURATION: Duration = Duration::from_millis(200);
50const FS_WATCH_LATENCY: Duration = Duration::from_millis(100);
51
52#[derive(Deserialize)]
53pub struct ExtensionsApiResponse {
54 pub data: Vec<ExtensionApiResponse>,
55}
56
57#[derive(Clone, Deserialize)]
58pub struct ExtensionApiResponse {
59 pub id: Arc<str>,
60 pub name: String,
61 pub version: Arc<str>,
62 pub description: Option<String>,
63 pub authors: Vec<String>,
64 pub repository: String,
65 pub download_count: usize,
66}
67
68pub struct ExtensionStore {
69 builder: Arc<ExtensionBuilder>,
70 extension_index: ExtensionIndex,
71 fs: Arc<dyn Fs>,
72 http_client: Arc<HttpClientWithUrl>,
73 reload_tx: UnboundedSender<Option<Arc<str>>>,
74 reload_complete_senders: Vec<oneshot::Sender<()>>,
75 installed_dir: PathBuf,
76 outstanding_operations: HashMap<Arc<str>, ExtensionOperation>,
77 index_path: PathBuf,
78 language_registry: Arc<LanguageRegistry>,
79 theme_registry: Arc<ThemeRegistry>,
80 modified_extensions: HashSet<Arc<str>>,
81 wasm_host: Arc<WasmHost>,
82 wasm_extensions: Vec<(Arc<ExtensionManifest>, WasmExtension)>,
83 tasks: Vec<Task<()>>,
84}
85
86#[derive(Clone)]
87pub enum ExtensionStatus {
88 NotInstalled,
89 Installing,
90 Upgrading,
91 Installed(Arc<str>),
92 Removing,
93}
94
95#[derive(Clone, Copy)]
96enum ExtensionOperation {
97 Upgrade,
98 Install,
99 Remove,
100}
101
102#[derive(Clone)]
103pub enum Event {
104 ExtensionsUpdated,
105 StartedReloading,
106 ExtensionInstalled(Arc<str>),
107}
108
109impl EventEmitter<Event> for ExtensionStore {}
110
111struct GlobalExtensionStore(Model<ExtensionStore>);
112
113impl Global for GlobalExtensionStore {}
114
115#[derive(Debug, Deserialize, Serialize, Default, PartialEq, Eq)]
116pub struct ExtensionIndex {
117 pub extensions: BTreeMap<Arc<str>, ExtensionIndexEntry>,
118 pub themes: BTreeMap<Arc<str>, ExtensionIndexThemeEntry>,
119 pub languages: BTreeMap<Arc<str>, ExtensionIndexLanguageEntry>,
120}
121
122#[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
123pub struct ExtensionIndexEntry {
124 manifest: Arc<ExtensionManifest>,
125 dev: bool,
126}
127
128#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Deserialize, Serialize)]
129pub struct ExtensionIndexThemeEntry {
130 extension: Arc<str>,
131 path: PathBuf,
132}
133
134#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Deserialize, Serialize)]
135pub struct ExtensionIndexLanguageEntry {
136 extension: Arc<str>,
137 path: PathBuf,
138 matcher: LanguageMatcher,
139 grammar: Option<Arc<str>>,
140}
141
142actions!(zed, [ReloadExtensions]);
143
144pub fn init(
145 fs: Arc<fs::RealFs>,
146 http_client: Arc<HttpClientWithUrl>,
147 node_runtime: Arc<dyn NodeRuntime>,
148 language_registry: Arc<LanguageRegistry>,
149 theme_registry: Arc<ThemeRegistry>,
150 cx: &mut AppContext,
151) {
152 let store = cx.new_model(move |cx| {
153 ExtensionStore::new(
154 EXTENSIONS_DIR.clone(),
155 None,
156 fs,
157 http_client,
158 node_runtime,
159 language_registry,
160 theme_registry,
161 cx,
162 )
163 });
164
165 cx.on_action(|_: &ReloadExtensions, cx| {
166 let store = cx.global::<GlobalExtensionStore>().0.clone();
167 store.update(cx, |store, cx| drop(store.reload(None, cx)));
168 });
169
170 cx.set_global(GlobalExtensionStore(store));
171}
172
173impl ExtensionStore {
174 pub fn global(cx: &AppContext) -> Model<Self> {
175 cx.global::<GlobalExtensionStore>().0.clone()
176 }
177
178 #[allow(clippy::too_many_arguments)]
179 pub fn new(
180 extensions_dir: PathBuf,
181 build_dir: Option<PathBuf>,
182 fs: Arc<dyn Fs>,
183 http_client: Arc<HttpClientWithUrl>,
184 node_runtime: Arc<dyn NodeRuntime>,
185 language_registry: Arc<LanguageRegistry>,
186 theme_registry: Arc<ThemeRegistry>,
187 cx: &mut ModelContext<Self>,
188 ) -> Self {
189 let work_dir = extensions_dir.join("work");
190 let build_dir = build_dir.unwrap_or_else(|| extensions_dir.join("build"));
191 let installed_dir = extensions_dir.join("installed");
192 let index_path = extensions_dir.join("index.json");
193
194 let (reload_tx, mut reload_rx) = unbounded();
195 let mut this = Self {
196 extension_index: Default::default(),
197 installed_dir,
198 index_path,
199 builder: Arc::new(ExtensionBuilder::new(build_dir)),
200 outstanding_operations: Default::default(),
201 modified_extensions: Default::default(),
202 reload_complete_senders: Vec::new(),
203 wasm_host: WasmHost::new(
204 fs.clone(),
205 http_client.clone(),
206 node_runtime,
207 language_registry.clone(),
208 work_dir,
209 ),
210 wasm_extensions: Vec::new(),
211 fs,
212 http_client,
213 language_registry,
214 theme_registry,
215 reload_tx,
216 tasks: Vec::new(),
217 };
218
219 // The extensions store maintains an index file, which contains a complete
220 // list of the installed extensions and the resources that they provide.
221 // This index is loaded synchronously on startup.
222 let (index_content, index_metadata, extensions_metadata) =
223 cx.background_executor().block(async {
224 futures::join!(
225 this.fs.load(&this.index_path),
226 this.fs.metadata(&this.index_path),
227 this.fs.metadata(&this.installed_dir),
228 )
229 });
230
231 // Normally, there is no need to rebuild the index. But if the index file
232 // is invalid or is out-of-date according to the filesystem mtimes, then
233 // it must be asynchronously rebuilt.
234 let mut extension_index = ExtensionIndex::default();
235 let mut extension_index_needs_rebuild = true;
236 if let Some(index_content) = index_content.ok() {
237 if let Some(index) = serde_json::from_str(&index_content).log_err() {
238 extension_index = index;
239 if let (Ok(Some(index_metadata)), Ok(Some(extensions_metadata))) =
240 (index_metadata, extensions_metadata)
241 {
242 if index_metadata.mtime > extensions_metadata.mtime {
243 extension_index_needs_rebuild = false;
244 }
245 }
246 }
247 }
248
249 // Immediately load all of the extensions in the initial manifest. If the
250 // index needs to be rebuild, then enqueue
251 let load_initial_extensions = this.extensions_updated(extension_index, cx);
252 if extension_index_needs_rebuild {
253 let _ = this.reload(None, cx);
254 }
255
256 // Perform all extension loading in a single task to ensure that we
257 // never attempt to simultaneously load/unload extensions from multiple
258 // parallel tasks.
259 this.tasks.push(cx.spawn(|this, mut cx| {
260 async move {
261 load_initial_extensions.await;
262
263 let mut debounce_timer = cx
264 .background_executor()
265 .spawn(futures::future::pending())
266 .fuse();
267 loop {
268 select_biased! {
269 _ = debounce_timer => {
270 let index = this
271 .update(&mut cx, |this, cx| this.rebuild_extension_index(cx))?
272 .await;
273 this.update(&mut cx, |this, cx| this.extensions_updated(index, cx))?
274 .await;
275 }
276 extension_id = reload_rx.next() => {
277 let Some(extension_id) = extension_id else { break; };
278 this.update(&mut cx, |this, _| {
279 this.modified_extensions.extend(extension_id);
280 })?;
281 debounce_timer = cx
282 .background_executor()
283 .timer(RELOAD_DEBOUNCE_DURATION)
284 .fuse();
285 }
286 }
287 }
288
289 anyhow::Ok(())
290 }
291 .map(drop)
292 }));
293
294 // Watch the installed extensions directory for changes. Whenever changes are
295 // detected, rebuild the extension index, and load/unload any extensions that
296 // have been added, removed, or modified.
297 this.tasks.push(cx.background_executor().spawn({
298 let fs = this.fs.clone();
299 let reload_tx = this.reload_tx.clone();
300 let installed_dir = this.installed_dir.clone();
301 async move {
302 let mut paths = fs.watch(&installed_dir, FS_WATCH_LATENCY).await;
303 while let Some(paths) = paths.next().await {
304 for path in paths {
305 let Ok(event_path) = path.strip_prefix(&installed_dir) else {
306 continue;
307 };
308
309 if let Some(path::Component::Normal(extension_dir_name)) =
310 event_path.components().next()
311 {
312 if let Some(extension_id) = extension_dir_name.to_str() {
313 reload_tx.unbounded_send(Some(extension_id.into())).ok();
314 }
315 }
316 }
317 }
318 }
319 }));
320
321 this
322 }
323
324 fn reload(
325 &mut self,
326 modified_extension: Option<Arc<str>>,
327 cx: &mut ModelContext<Self>,
328 ) -> impl Future<Output = ()> {
329 let (tx, rx) = oneshot::channel();
330 self.reload_complete_senders.push(tx);
331 self.reload_tx
332 .unbounded_send(modified_extension)
333 .expect("reload task exited");
334 cx.emit(Event::StartedReloading);
335
336 async move {
337 rx.await.ok();
338 }
339 }
340
341 fn extensions_dir(&self) -> PathBuf {
342 self.installed_dir.clone()
343 }
344
345 pub fn extension_status(&self, extension_id: &str) -> ExtensionStatus {
346 match self.outstanding_operations.get(extension_id) {
347 Some(ExtensionOperation::Install) => ExtensionStatus::Installing,
348 Some(ExtensionOperation::Remove) => ExtensionStatus::Removing,
349 Some(ExtensionOperation::Upgrade) => ExtensionStatus::Upgrading,
350 None => match self.extension_index.extensions.get(extension_id) {
351 Some(extension) => ExtensionStatus::Installed(extension.manifest.version.clone()),
352 None => ExtensionStatus::NotInstalled,
353 },
354 }
355 }
356
357 pub fn dev_extensions(&self) -> impl Iterator<Item = &Arc<ExtensionManifest>> {
358 self.extension_index
359 .extensions
360 .values()
361 .filter_map(|extension| extension.dev.then_some(&extension.manifest))
362 }
363
364 /// Returns the names of themes provided by extensions.
365 pub fn extension_themes<'a>(
366 &'a self,
367 extension_id: &'a str,
368 ) -> impl Iterator<Item = &'a Arc<str>> {
369 self.extension_index
370 .themes
371 .iter()
372 .filter_map(|(name, theme)| theme.extension.as_ref().eq(extension_id).then_some(name))
373 }
374
375 pub fn fetch_extensions(
376 &self,
377 search: Option<&str>,
378 cx: &mut ModelContext<Self>,
379 ) -> Task<Result<Vec<ExtensionApiResponse>>> {
380 let url = self.http_client.build_zed_api_url(&format!(
381 "/extensions{query}",
382 query = search
383 .map(|search| format!("?filter={search}"))
384 .unwrap_or_default()
385 ));
386 let http_client = self.http_client.clone();
387 cx.spawn(move |_, _| async move {
388 let mut response = http_client.get(&url, AsyncBody::empty(), true).await?;
389
390 let mut body = Vec::new();
391 response
392 .body_mut()
393 .read_to_end(&mut body)
394 .await
395 .context("error reading extensions")?;
396
397 if response.status().is_client_error() {
398 let text = String::from_utf8_lossy(body.as_slice());
399 bail!(
400 "status error {}, response: {text:?}",
401 response.status().as_u16()
402 );
403 }
404
405 let response: ExtensionsApiResponse = serde_json::from_slice(&body)?;
406
407 Ok(response.data)
408 })
409 }
410
411 pub fn install_extension(
412 &mut self,
413 extension_id: Arc<str>,
414 version: Arc<str>,
415 cx: &mut ModelContext<Self>,
416 ) {
417 self.install_or_upgrade_extension(extension_id, version, ExtensionOperation::Install, cx)
418 }
419
420 fn install_or_upgrade_extension_at_endpoint(
421 &mut self,
422 extension_id: Arc<str>,
423 url: String,
424 operation: ExtensionOperation,
425 cx: &mut ModelContext<Self>,
426 ) {
427 let extensions_dir = self.extensions_dir();
428 let http_client = self.http_client.clone();
429
430 match self.outstanding_operations.entry(extension_id.clone()) {
431 hash_map::Entry::Occupied(_) => return,
432 hash_map::Entry::Vacant(e) => e.insert(operation),
433 };
434
435 cx.spawn(move |this, mut cx| async move {
436 let _finish = util::defer({
437 let this = this.clone();
438 let mut cx = cx.clone();
439 let extension_id = extension_id.clone();
440 move || {
441 this.update(&mut cx, |this, cx| {
442 this.outstanding_operations.remove(extension_id.as_ref());
443 cx.notify();
444 })
445 .ok();
446 }
447 });
448
449 let mut response = http_client
450 .get(&url, Default::default(), true)
451 .await
452 .map_err(|err| anyhow!("error downloading extension: {}", err))?;
453 let decompressed_bytes = GzipDecoder::new(BufReader::new(response.body_mut()));
454 let archive = Archive::new(decompressed_bytes);
455 archive
456 .unpack(extensions_dir.join(extension_id.as_ref()))
457 .await?;
458 this.update(&mut cx, |this, cx| {
459 this.reload(Some(extension_id.clone()), cx)
460 })?
461 .await;
462
463 match operation {
464 ExtensionOperation::Install => {
465 this.update(&mut cx, |_, cx| {
466 cx.emit(Event::ExtensionInstalled(extension_id));
467 })
468 .ok();
469 }
470 _ => {}
471 }
472
473 anyhow::Ok(())
474 })
475 .detach_and_log_err(cx);
476 }
477
478 pub fn install_latest_extension(
479 &mut self,
480 extension_id: Arc<str>,
481 cx: &mut ModelContext<Self>,
482 ) {
483 log::info!("installing extension {extension_id} latest version");
484
485 let url = self
486 .http_client
487 .build_zed_api_url(&format!("/extensions/{extension_id}/download"));
488
489 self.install_or_upgrade_extension_at_endpoint(
490 extension_id,
491 url,
492 ExtensionOperation::Install,
493 cx,
494 );
495 }
496
497 pub fn upgrade_extension(
498 &mut self,
499 extension_id: Arc<str>,
500 version: Arc<str>,
501 cx: &mut ModelContext<Self>,
502 ) {
503 self.install_or_upgrade_extension(extension_id, version, ExtensionOperation::Upgrade, cx)
504 }
505
506 fn install_or_upgrade_extension(
507 &mut self,
508 extension_id: Arc<str>,
509 version: Arc<str>,
510 operation: ExtensionOperation,
511 cx: &mut ModelContext<Self>,
512 ) {
513 log::info!("installing extension {extension_id} {version}");
514 let url = self
515 .http_client
516 .build_zed_api_url(&format!("/extensions/{extension_id}/{version}/download"));
517
518 self.install_or_upgrade_extension_at_endpoint(extension_id, url, operation, cx);
519 }
520
521 pub fn uninstall_extension(&mut self, extension_id: Arc<str>, cx: &mut ModelContext<Self>) {
522 let extensions_dir = self.extensions_dir();
523 let fs = self.fs.clone();
524
525 match self.outstanding_operations.entry(extension_id.clone()) {
526 hash_map::Entry::Occupied(_) => return,
527 hash_map::Entry::Vacant(e) => e.insert(ExtensionOperation::Remove),
528 };
529
530 cx.spawn(move |this, mut cx| async move {
531 let _finish = util::defer({
532 let this = this.clone();
533 let mut cx = cx.clone();
534 let extension_id = extension_id.clone();
535 move || {
536 this.update(&mut cx, |this, cx| {
537 this.outstanding_operations.remove(extension_id.as_ref());
538 cx.notify();
539 })
540 .ok();
541 }
542 });
543
544 fs.remove_dir(
545 &extensions_dir.join(extension_id.as_ref()),
546 RemoveOptions {
547 recursive: true,
548 ignore_if_not_exists: true,
549 },
550 )
551 .await?;
552
553 this.update(&mut cx, |this, cx| this.reload(None, cx))?
554 .await;
555 anyhow::Ok(())
556 })
557 .detach_and_log_err(cx)
558 }
559
560 pub fn install_dev_extension(
561 &mut self,
562 extension_source_path: PathBuf,
563 cx: &mut ModelContext<Self>,
564 ) -> Task<Result<()>> {
565 let extensions_dir = self.extensions_dir();
566 let fs = self.fs.clone();
567 let builder = self.builder.clone();
568
569 cx.spawn(move |this, mut cx| async move {
570 let extension_manifest =
571 Self::load_extension_manifest(fs.clone(), &extension_source_path).await?;
572 let extension_id = extension_manifest.id.clone();
573
574 if !this.update(&mut cx, |this, cx| {
575 match this.outstanding_operations.entry(extension_id.clone()) {
576 hash_map::Entry::Occupied(_) => return false,
577 hash_map::Entry::Vacant(e) => e.insert(ExtensionOperation::Remove),
578 };
579 cx.notify();
580 true
581 })? {
582 return Ok(());
583 }
584
585 let _finish = util::defer({
586 let this = this.clone();
587 let mut cx = cx.clone();
588 let extension_id = extension_id.clone();
589 move || {
590 this.update(&mut cx, |this, cx| {
591 this.outstanding_operations.remove(extension_id.as_ref());
592 cx.notify();
593 })
594 .ok();
595 }
596 });
597
598 cx.background_executor()
599 .spawn({
600 let extension_source_path = extension_source_path.clone();
601 async move {
602 builder
603 .compile_extension(
604 &extension_source_path,
605 &extension_manifest,
606 CompileExtensionOptions { release: false },
607 )
608 .await
609 }
610 })
611 .await?;
612
613 let output_path = &extensions_dir.join(extension_id.as_ref());
614 if let Some(metadata) = fs.metadata(&output_path).await? {
615 if metadata.is_symlink {
616 fs.remove_file(
617 &output_path,
618 RemoveOptions {
619 recursive: false,
620 ignore_if_not_exists: true,
621 },
622 )
623 .await?;
624 } else {
625 bail!("extension {extension_id} is already installed");
626 }
627 }
628
629 fs.create_symlink(output_path, extension_source_path)
630 .await?;
631
632 this.update(&mut cx, |this, cx| this.reload(None, cx))?
633 .await;
634 Ok(())
635 })
636 }
637
638 pub fn rebuild_dev_extension(&mut self, extension_id: Arc<str>, cx: &mut ModelContext<Self>) {
639 let path = self.installed_dir.join(extension_id.as_ref());
640 let builder = self.builder.clone();
641 let fs = self.fs.clone();
642
643 match self.outstanding_operations.entry(extension_id.clone()) {
644 hash_map::Entry::Occupied(_) => return,
645 hash_map::Entry::Vacant(e) => e.insert(ExtensionOperation::Upgrade),
646 };
647
648 cx.notify();
649 let compile = cx.background_executor().spawn(async move {
650 let manifest = Self::load_extension_manifest(fs, &path).await?;
651 builder
652 .compile_extension(&path, &manifest, CompileExtensionOptions { release: true })
653 .await
654 });
655
656 cx.spawn(|this, mut cx| async move {
657 let result = compile.await;
658
659 this.update(&mut cx, |this, cx| {
660 this.outstanding_operations.remove(&extension_id);
661 cx.notify();
662 })?;
663
664 if result.is_ok() {
665 this.update(&mut cx, |this, cx| this.reload(Some(extension_id), cx))?
666 .await;
667 }
668
669 result
670 })
671 .detach_and_log_err(cx)
672 }
673
674 /// Updates the set of installed extensions.
675 ///
676 /// First, this unloads any themes, languages, or grammars that are
677 /// no longer in the manifest, or whose files have changed on disk.
678 /// Then it loads any themes, languages, or grammars that are newly
679 /// added to the manifest, or whose files have changed on disk.
680 fn extensions_updated(
681 &mut self,
682 new_index: ExtensionIndex,
683 cx: &mut ModelContext<Self>,
684 ) -> Task<()> {
685 let old_index = &self.extension_index;
686
687 // Determine which extensions need to be loaded and unloaded, based
688 // on the changes to the manifest and the extensions that we know have been
689 // modified.
690 let mut extensions_to_unload = Vec::default();
691 let mut extensions_to_load = Vec::default();
692 {
693 let mut old_keys = old_index.extensions.iter().peekable();
694 let mut new_keys = new_index.extensions.iter().peekable();
695 loop {
696 match (old_keys.peek(), new_keys.peek()) {
697 (None, None) => break,
698 (None, Some(_)) => {
699 extensions_to_load.push(new_keys.next().unwrap().0.clone());
700 }
701 (Some(_), None) => {
702 extensions_to_unload.push(old_keys.next().unwrap().0.clone());
703 }
704 (Some((old_key, _)), Some((new_key, _))) => match old_key.cmp(&new_key) {
705 Ordering::Equal => {
706 let (old_key, old_value) = old_keys.next().unwrap();
707 let (new_key, new_value) = new_keys.next().unwrap();
708 if old_value != new_value || self.modified_extensions.contains(old_key)
709 {
710 extensions_to_unload.push(old_key.clone());
711 extensions_to_load.push(new_key.clone());
712 }
713 }
714 Ordering::Less => {
715 extensions_to_unload.push(old_keys.next().unwrap().0.clone());
716 }
717 Ordering::Greater => {
718 extensions_to_load.push(new_keys.next().unwrap().0.clone());
719 }
720 },
721 }
722 }
723 self.modified_extensions.clear();
724 }
725
726 if extensions_to_load.is_empty() && extensions_to_unload.is_empty() {
727 return Task::ready(());
728 }
729
730 let reload_count = extensions_to_unload
731 .iter()
732 .filter(|id| extensions_to_load.contains(id))
733 .count();
734
735 log::info!(
736 "extensions updated. loading {}, reloading {}, unloading {}",
737 extensions_to_load.len() - reload_count,
738 reload_count,
739 extensions_to_unload.len() - reload_count
740 );
741
742 let themes_to_remove = old_index
743 .themes
744 .iter()
745 .filter_map(|(name, entry)| {
746 if extensions_to_unload.contains(&entry.extension) {
747 Some(name.clone().into())
748 } else {
749 None
750 }
751 })
752 .collect::<Vec<_>>();
753 let languages_to_remove = old_index
754 .languages
755 .iter()
756 .filter_map(|(name, entry)| {
757 if extensions_to_unload.contains(&entry.extension) {
758 Some(name.clone())
759 } else {
760 None
761 }
762 })
763 .collect::<Vec<_>>();
764 let mut grammars_to_remove = Vec::new();
765 for extension_id in &extensions_to_unload {
766 let Some(extension) = old_index.extensions.get(extension_id) else {
767 continue;
768 };
769 grammars_to_remove.extend(extension.manifest.grammars.keys().cloned());
770 for (language_server_name, config) in extension.manifest.language_servers.iter() {
771 self.language_registry
772 .remove_lsp_adapter(config.language.as_ref(), language_server_name);
773 }
774 }
775
776 self.wasm_extensions
777 .retain(|(extension, _)| !extensions_to_unload.contains(&extension.id));
778 self.theme_registry.remove_user_themes(&themes_to_remove);
779 self.language_registry
780 .remove_languages(&languages_to_remove, &grammars_to_remove);
781
782 let languages_to_add = new_index
783 .languages
784 .iter()
785 .filter(|(_, entry)| extensions_to_load.contains(&entry.extension))
786 .collect::<Vec<_>>();
787 let mut grammars_to_add = Vec::new();
788 let mut themes_to_add = Vec::new();
789 for extension_id in &extensions_to_load {
790 let Some(extension) = new_index.extensions.get(extension_id) else {
791 continue;
792 };
793
794 grammars_to_add.extend(extension.manifest.grammars.keys().map(|grammar_name| {
795 let mut grammar_path = self.installed_dir.clone();
796 grammar_path.extend([extension_id.as_ref(), "grammars"]);
797 grammar_path.push(grammar_name.as_ref());
798 grammar_path.set_extension("wasm");
799 (grammar_name.clone(), grammar_path)
800 }));
801 themes_to_add.extend(extension.manifest.themes.iter().map(|theme_path| {
802 let mut path = self.installed_dir.clone();
803 path.extend([Path::new(extension_id.as_ref()), theme_path.as_path()]);
804 path
805 }));
806 }
807
808 self.language_registry
809 .register_wasm_grammars(grammars_to_add);
810
811 for (language_name, language) in languages_to_add {
812 let mut language_path = self.installed_dir.clone();
813 language_path.extend([
814 Path::new(language.extension.as_ref()),
815 language.path.as_path(),
816 ]);
817 self.language_registry.register_language(
818 language_name.clone(),
819 language.grammar.clone(),
820 language.matcher.clone(),
821 None,
822 move || {
823 let config = std::fs::read_to_string(language_path.join("config.toml"))?;
824 let config: LanguageConfig = ::toml::from_str(&config)?;
825 let queries = load_plugin_queries(&language_path);
826 Ok((config, queries))
827 },
828 );
829 }
830
831 let fs = self.fs.clone();
832 let wasm_host = self.wasm_host.clone();
833 let root_dir = self.installed_dir.clone();
834 let theme_registry = self.theme_registry.clone();
835 let extension_entries = extensions_to_load
836 .iter()
837 .filter_map(|name| new_index.extensions.get(name).cloned())
838 .collect::<Vec<_>>();
839
840 self.extension_index = new_index;
841 cx.notify();
842 cx.emit(Event::ExtensionsUpdated);
843
844 cx.spawn(|this, mut cx| async move {
845 cx.background_executor()
846 .spawn({
847 let fs = fs.clone();
848 async move {
849 for theme_path in &themes_to_add {
850 theme_registry
851 .load_user_theme(&theme_path, fs.clone())
852 .await
853 .log_err();
854 }
855 }
856 })
857 .await;
858
859 let mut wasm_extensions = Vec::new();
860 for extension in extension_entries {
861 if extension.manifest.lib.kind.is_none() {
862 continue;
863 };
864
865 let mut path = root_dir.clone();
866 path.extend([extension.manifest.id.as_ref(), "extension.wasm"]);
867 let Some(mut wasm_file) = fs
868 .open_sync(&path)
869 .await
870 .context("failed to open wasm file")
871 .log_err()
872 else {
873 continue;
874 };
875
876 let mut wasm_bytes = Vec::new();
877 if wasm_file
878 .read_to_end(&mut wasm_bytes)
879 .context("failed to read wasm")
880 .log_err()
881 .is_none()
882 {
883 continue;
884 }
885
886 let Some(wasm_extension) = wasm_host
887 .load_extension(
888 wasm_bytes,
889 extension.manifest.clone(),
890 cx.background_executor().clone(),
891 )
892 .await
893 .context("failed to load wasm extension")
894 .log_err()
895 else {
896 continue;
897 };
898
899 wasm_extensions.push((extension.manifest.clone(), wasm_extension));
900 }
901
902 this.update(&mut cx, |this, cx| {
903 this.reload_complete_senders.clear();
904
905 for (manifest, wasm_extension) in &wasm_extensions {
906 for (language_server_name, language_server_config) in &manifest.language_servers
907 {
908 this.language_registry.register_lsp_adapter(
909 language_server_config.language.clone(),
910 Arc::new(ExtensionLspAdapter {
911 extension: wasm_extension.clone(),
912 host: this.wasm_host.clone(),
913 config: wit::LanguageServerConfig {
914 name: language_server_name.0.to_string(),
915 language_name: language_server_config.language.to_string(),
916 },
917 }),
918 );
919 }
920 }
921 this.wasm_extensions.extend(wasm_extensions);
922 ThemeSettings::reload_current_theme(cx)
923 })
924 .ok();
925 })
926 }
927
928 fn rebuild_extension_index(&self, cx: &mut ModelContext<Self>) -> Task<ExtensionIndex> {
929 let fs = self.fs.clone();
930 let work_dir = self.wasm_host.work_dir.clone();
931 let extensions_dir = self.installed_dir.clone();
932 let index_path = self.index_path.clone();
933 cx.background_executor().spawn(async move {
934 let start_time = Instant::now();
935 let mut index = ExtensionIndex::default();
936
937 fs.create_dir(&work_dir).await.log_err();
938 fs.create_dir(&extensions_dir).await.log_err();
939
940 let extension_paths = fs.read_dir(&extensions_dir).await;
941 if let Ok(mut extension_paths) = extension_paths {
942 while let Some(extension_dir) = extension_paths.next().await {
943 let Ok(extension_dir) = extension_dir else {
944 continue;
945 };
946 Self::add_extension_to_index(fs.clone(), extension_dir, &mut index)
947 .await
948 .log_err();
949 }
950 }
951
952 if let Ok(index_json) = serde_json::to_string_pretty(&index) {
953 fs.save(&index_path, &index_json.as_str().into(), Default::default())
954 .await
955 .context("failed to save extension index")
956 .log_err();
957 }
958
959 log::info!("rebuilt extension index in {:?}", start_time.elapsed());
960 index
961 })
962 }
963
964 async fn add_extension_to_index(
965 fs: Arc<dyn Fs>,
966 extension_dir: PathBuf,
967 index: &mut ExtensionIndex,
968 ) -> Result<()> {
969 let mut extension_manifest =
970 Self::load_extension_manifest(fs.clone(), &extension_dir).await?;
971 let extension_id = extension_manifest.id.clone();
972
973 // TODO: distinguish dev extensions more explicitly, by the absence
974 // of a checksum file that we'll create when downloading normal extensions.
975 let is_dev = fs
976 .metadata(&extension_dir)
977 .await?
978 .ok_or_else(|| anyhow!("directory does not exist"))?
979 .is_symlink;
980
981 if let Ok(mut language_paths) = fs.read_dir(&extension_dir.join("languages")).await {
982 while let Some(language_path) = language_paths.next().await {
983 let language_path = language_path?;
984 let Ok(relative_path) = language_path.strip_prefix(&extension_dir) else {
985 continue;
986 };
987 let Ok(Some(fs_metadata)) = fs.metadata(&language_path).await else {
988 continue;
989 };
990 if !fs_metadata.is_dir {
991 continue;
992 }
993 let config = fs.load(&language_path.join("config.toml")).await?;
994 let config = ::toml::from_str::<LanguageConfig>(&config)?;
995
996 let relative_path = relative_path.to_path_buf();
997 if !extension_manifest.languages.contains(&relative_path) {
998 extension_manifest.languages.push(relative_path.clone());
999 }
1000
1001 index.languages.insert(
1002 config.name.clone(),
1003 ExtensionIndexLanguageEntry {
1004 extension: extension_id.clone(),
1005 path: relative_path,
1006 matcher: config.matcher,
1007 grammar: config.grammar,
1008 },
1009 );
1010 }
1011 }
1012
1013 if let Ok(mut theme_paths) = fs.read_dir(&extension_dir.join("themes")).await {
1014 while let Some(theme_path) = theme_paths.next().await {
1015 let theme_path = theme_path?;
1016 let Ok(relative_path) = theme_path.strip_prefix(&extension_dir) else {
1017 continue;
1018 };
1019
1020 let Some(theme_family) = ThemeRegistry::read_user_theme(&theme_path, fs.clone())
1021 .await
1022 .log_err()
1023 else {
1024 continue;
1025 };
1026
1027 let relative_path = relative_path.to_path_buf();
1028 if !extension_manifest.themes.contains(&relative_path) {
1029 extension_manifest.themes.push(relative_path.clone());
1030 }
1031
1032 for theme in theme_family.themes {
1033 index.themes.insert(
1034 theme.name.into(),
1035 ExtensionIndexThemeEntry {
1036 extension: extension_id.clone(),
1037 path: relative_path.clone(),
1038 },
1039 );
1040 }
1041 }
1042 }
1043
1044 let extension_wasm_path = extension_dir.join("extension.wasm");
1045 if fs.is_file(&extension_wasm_path).await {
1046 extension_manifest
1047 .lib
1048 .kind
1049 .get_or_insert(ExtensionLibraryKind::Rust);
1050 }
1051
1052 index.extensions.insert(
1053 extension_id.clone(),
1054 ExtensionIndexEntry {
1055 dev: is_dev,
1056 manifest: Arc::new(extension_manifest),
1057 },
1058 );
1059
1060 Ok(())
1061 }
1062
1063 pub async fn load_extension_manifest(
1064 fs: Arc<dyn Fs>,
1065 extension_dir: &Path,
1066 ) -> Result<ExtensionManifest> {
1067 let extension_name = extension_dir
1068 .file_name()
1069 .and_then(OsStr::to_str)
1070 .ok_or_else(|| anyhow!("invalid extension name"))?;
1071
1072 let mut extension_manifest_path = extension_dir.join("extension.json");
1073 if fs.is_file(&extension_manifest_path).await {
1074 let manifest_content = fs
1075 .load(&extension_manifest_path)
1076 .await
1077 .with_context(|| format!("failed to load {extension_name} extension.json"))?;
1078 let manifest_json = serde_json::from_str::<OldExtensionManifest>(&manifest_content)
1079 .with_context(|| {
1080 format!("invalid extension.json for extension {extension_name}")
1081 })?;
1082
1083 Ok(manifest_from_old_manifest(manifest_json, extension_name))
1084 } else {
1085 extension_manifest_path.set_extension("toml");
1086 let manifest_content = fs
1087 .load(&extension_manifest_path)
1088 .await
1089 .with_context(|| format!("failed to load {extension_name} extension.toml"))?;
1090 toml::from_str(&manifest_content)
1091 .with_context(|| format!("invalid extension.json for extension {extension_name}"))
1092 }
1093 }
1094}
1095
1096fn manifest_from_old_manifest(
1097 manifest_json: OldExtensionManifest,
1098 extension_id: &str,
1099) -> ExtensionManifest {
1100 ExtensionManifest {
1101 id: extension_id.into(),
1102 name: manifest_json.name,
1103 version: manifest_json.version,
1104 description: manifest_json.description,
1105 repository: manifest_json.repository,
1106 authors: manifest_json.authors,
1107 lib: Default::default(),
1108 themes: {
1109 let mut themes = manifest_json.themes.into_values().collect::<Vec<_>>();
1110 themes.sort();
1111 themes.dedup();
1112 themes
1113 },
1114 languages: {
1115 let mut languages = manifest_json.languages.into_values().collect::<Vec<_>>();
1116 languages.sort();
1117 languages.dedup();
1118 languages
1119 },
1120 grammars: manifest_json
1121 .grammars
1122 .into_keys()
1123 .map(|grammar_name| (grammar_name, Default::default()))
1124 .collect(),
1125 language_servers: Default::default(),
1126 }
1127}
1128
1129fn load_plugin_queries(root_path: &Path) -> LanguageQueries {
1130 let mut result = LanguageQueries::default();
1131 if let Some(entries) = std::fs::read_dir(root_path).log_err() {
1132 for entry in entries {
1133 let Some(entry) = entry.log_err() else {
1134 continue;
1135 };
1136 let path = entry.path();
1137 if let Some(remainder) = path.strip_prefix(root_path).ok().and_then(|p| p.to_str()) {
1138 if !remainder.ends_with(".scm") {
1139 continue;
1140 }
1141 for (name, query) in QUERY_FILENAME_PREFIXES {
1142 if remainder.starts_with(name) {
1143 if let Some(contents) = std::fs::read_to_string(&path).log_err() {
1144 match query(&mut result) {
1145 None => *query(&mut result) = Some(contents.into()),
1146 Some(r) => r.to_mut().push_str(contents.as_ref()),
1147 }
1148 }
1149 break;
1150 }
1151 }
1152 }
1153 }
1154 }
1155 result
1156}