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flagon-io/g1t

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g1t/services/repos/src/registry.rs

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1//! Repository metadata in D1.
2
3use std::cell::RefCell;
4use std::collections::HashMap;
5
6use g1t_contracts::Viewer;
7use g1t_contracts::access::{self, Capability, RepoRole};
8use g1t_contracts::repos::{Repo, RepoPath};
9use serde::Deserialize;
10use worker::wasm_bindgen::JsValue;
11use worker::{D1Database, Result};
12
13#[derive(Deserialize)]
14pub(crate) struct RepoRow {
15 id: String,
16 namespace: String,
17 name: String,
18 description: Option<String>,
19 is_private: u8,
20 owner_id: String,
21 default_branch: String,
22 fork_of: Option<String>,
23 protected: u8,
24 created_at: String,
25 /// Null only on rows written before the column existed and not yet
26 /// migrated; their key is the one worked out from the path.
27 #[serde(default)]
28 store: Option<String>,
29 /// JSON; absent on rows read before the column existed.
30 #[serde(default)]
31 topics: Option<String>,
32 #[serde(default)]
33 website: Option<String>,
34 #[serde(default)]
35 archived_at: Option<String>,
36 #[serde(default)]
37 deleted_at: Option<String>,
38 /// Bumped by everything that changes the repository's refs; see
39 /// [`RefsState`]. Absent on rows read before the column existed.
40 #[serde(default)]
41 refs_version: Option<f64>,
42 #[serde(default)]
43 refs_open_until: Option<f64>,
44 /// A pull request working copy whose git data was removed, and the
45 /// head it had (forks.rs). Absent before the columns existed.
46 #[serde(default)]
47 retired_at: Option<String>,
48 #[serde(default)]
49 retired_head: Option<String>,
50 /// Until when writes wait, and why: a move between namespaces
51 /// (moves.rs). Absent before the columns existed.
52 #[serde(default)]
53 writes_paused_until: Option<f64>,
54 #[serde(default)]
55 writes_paused_for: Option<String>,
56}
57
58thread_local! {
59 /// Repositories whose writes wait, by id: until when, and why. Filled
60 /// whenever a row is read.
61 static PAUSED: RefCell<HashMap<String, (u64, String)>> = RefCell::new(HashMap::new());
62}
63
64/// Records whether writes to the repository with this id wait, as its row says.
65pub fn note_paused(id: &str, until: Option<u64>, reason: Option<&str>) {
66 PAUSED.with(|paused| {
67 let mut paused = paused.borrow_mut();
68 match until {
69 Some(until) => {
70 paused.insert(id.to_owned(), (until, reason.unwrap_or("maintenance").to_owned()));
71 }
72 None => {
73 paused.remove(id);
74 }
75 }
76 });
77}
78
79/// Why writes to the repository with this id wait at `now`, if they do, as
80/// its row last read here said.
81pub fn paused(id: &str, now: u64) -> Option<String> {
82 PAUSED.with(|paused| paused.borrow().get(id).filter(|(until, _)| *until > now).map(|(_, reason)| reason.clone()))
83}
84
85/// Where a repository's refs stand, as its row last said: `version` goes up
86/// with every change g1t makes to them, so an answer that lists them (see
87/// refs_cache.rs) is kept under the version it was made at, and a change
88/// leaves it behind. Until `open_until` (milliseconds) a credential that
89/// can change them is out of g1t's hands, and nothing is kept.
90#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
91pub struct RefsState {
92 pub version: u64,
93 pub open_until: u64,
94}
95
96/// The newest [`RefsState`] this isolate has read or written, by
97/// repository id. A version only goes up, so an older read finishing late
98/// never takes a newer one back.
99#[derive(Default)]
100pub struct RefsStates {
101 states: HashMap<String, RefsState>,
102}
103
104impl RefsStates {
105 pub fn note(&mut self, id: &str, state: RefsState) {
106 let kept = self.states.entry(id.to_owned()).or_default();
107 kept.version = kept.version.max(state.version);
108 kept.open_until = kept.open_until.max(state.open_until);
109 }
110
111 pub fn get(&self, id: &str) -> Option<RefsState> {
112 self.states.get(id).copied()
113 }
114}
115
116thread_local! {
117 static REFS: RefCell<RefsStates> = RefCell::new(RefsStates::default());
118}
119
120/// Where the refs of the repository with this id stand, as this isolate
121/// last read them; `None` before the column existed or before its row was
122/// read here.
123pub fn refs_state(id: &str) -> Option<RefsState> {
124 REFS.with(|refs| refs.borrow().get(id))
125}
126
127fn note_refs(id: &str, version: Option<f64>, open_until: Option<f64>) {
128 if let Some(version) = version {
129 let state = RefsState {
130 version: version as u64,
131 open_until: open_until.unwrap_or(0.0) as u64,
132 };
133 REFS.with(|refs| refs.borrow_mut().note(id, state));
134 }
135}
136
137thread_local! {
138 /// Working copies whose git data was removed, by id, with the head
139 /// each had (forks.rs). Filled whenever a row is read.
140 static RETIRED: RefCell<HashMap<String, String>> = RefCell::new(HashMap::new());
141}
142
143/// The head a removed working copy had, if the repository with this id is one.
144pub fn retired(id: &str) -> Option<String> {
145 RETIRED.with(|retired| retired.borrow().get(id).cloned())
146}
147
148/// Records whether the repository with this id is a removed working copy.
149pub fn note_retired(id: &str, head: Option<&str>) {
150 RETIRED.with(|retired| {
151 let mut retired = retired.borrow_mut();
152 match head {
153 Some(head) => {
154 retired.insert(id.to_owned(), head.to_owned());
155 }
156 None => {
157 retired.remove(id);
158 }
159 }
160 });
161}
162
163thread_local! {
164 /// Store keys that differ from the one a repository's path gives: those
165 /// of repositories whose workspace was renamed after they were made.
166 /// Filled whenever a row is read or written, so every `Repo` this
167 /// service holds has its key here. A key changes only when a move
168 /// between namespaces switches it (moves.rs), and every row read
169 /// after that brings the new one, so requests sharing the isolate can
170 /// share the map.
171 static MOVED: RefCell<HashMap<String, String>> = RefCell::new(HashMap::new());
172}
173
174/// How long a fetch may go by a repository's row as it was read a moment
175/// ago: a clone is two or three requests in quick succession, and each
176/// would otherwise read the same row. Short enough that making a repository
177/// private, archiving or deleting it applies within seconds.
178pub const RECENT_MS: u64 = 5_000;
179
180/// Repositories read in the last [`RECENT_MS`], by path. Only rows that
181/// were found are kept, so a repository just made is never missed.
182#[derive(Default)]
183pub struct Recent {
184 rows: HashMap<(String, String), (Repo, u64)>,
185}
186
187impl Recent {
188 fn key(path: &RepoPath) -> (String, String) {
189 (path.namespace.to_lowercase(), path.name.to_lowercase())
190 }
191
192 pub fn get(&self, path: &RepoPath, now: u64) -> Option<Repo> {
193 self.rows
194 .get(&Self::key(path))
195 .filter(|(_, read)| now.saturating_sub(*read) < RECENT_MS)
196 .map(|(repo, _)| repo.clone())
197 }
198
199 pub fn keep(&mut self, path: &RepoPath, repo: &Repo, now: u64) {
200 self.rows.retain(|_, (_, read)| now.saturating_sub(*read) < RECENT_MS);
201 self.rows.insert(Self::key(path), (repo.clone(), now));
202 }
203}
204
205thread_local! {
206 static RECENT: RefCell<Recent> = RefCell::new(Recent::default());
207}
208
209/// The key a repository's path gives: what every repository was stored
210/// under before workspaces could be renamed.
211pub fn path_key(repo: &Repo) -> String {
212 format!("{}--{}", repo.namespace, repo.name)
213}
214
215/// Records where a repository is stored, when its path does not say. A
216/// key changes when the repository moves between namespaces (moves.rs),
217/// so one that is the path's again is forgotten.
218pub fn remember_store(repo: &Repo, store: &str) {
219 MOVED.with(|moved| {
220 let mut moved = moved.borrow_mut();
221 if store != path_key(repo) {
222 moved.insert(repo.id.clone(), store.to_owned());
223 } else {
224 moved.remove(&repo.id);
225 }
226 });
227}
228
229impl From<RepoRow> for Repo {
230 fn from(row: RepoRow) -> Self {
231 let repo = Repo {
232 id: row.id,
233 namespace: row.namespace,
234 name: row.name,
235 description: row.description,
236 is_private: row.is_private != 0,
237 owner_id: row.owner_id,
238 default_branch: row.default_branch,
239 fork_of: row.fork_of,
240 protected: row.protected != 0,
241 created_at: row.created_at,
242 topics: row
243 .topics
244 .as_deref()
245 .and_then(|topics| serde_json::from_str(topics).ok())
246 .unwrap_or_default(),
247 website: row.website,
248 archived_at: row.archived_at,
249 };
250 if let Some(store) = &row.store {
251 remember_store(&repo, store);
252 }
253 note_refs(&repo.id, row.refs_version, row.refs_open_until);
254 note_retired(&repo.id, row.retired_at.as_ref().and(row.retired_head.as_deref()));
255 note_paused(&repo.id, row.writes_paused_until.map(|until| until as u64), row.writes_paused_for.as_deref());
256 repo
257 }
258}
259
260/// The key a repo is stored under in the git store.
261pub fn store_key(repo: &Repo) -> String {
262 let key = MOVED
263 .with(|moved| moved.borrow().get(&repo.id).cloned())
264 .unwrap_or_else(|| path_key(repo));
265 // Its interactions with the store are metered for its workspace.
266 crate::meters::note_owner(&key, &repo.namespace);
267 key
268}
269
270/// The viewer's role on `repo` (see `g1t_contracts::access`): ownership of
271/// its workspace, the workspace's base permission, a direct grant, or
272/// Read on a public repository. A pull request's fork is its author's to
273/// write; whoever can read the repository it came from can read it too,
274/// which `Repos::may_read` checks.
275pub fn role(repo: &Repo, viewer: &Viewer) -> Option<RepoRole> {
276 if repo.fork_of.is_some() {
277 let author = viewer.as_ref().is_some_and(|user| user.id == repo.owner_id);
278 return if author {
279 Some(RepoRole::Write)
280 } else if repo.is_private {
281 None
282 } else {
283 Some(RepoRole::Read)
284 };
285 }
286 access::permission(viewer.as_ref(), repo)
287}
288
289/// Whether the viewer may read `repo`, going by the repository alone.
290pub fn can_read(repo: &Repo, viewer: &Viewer) -> bool {
291 role(repo, viewer).is_some()
292}
293
294/// Whether the viewer may push to `repo`: Write or higher, or the author
295/// of a pull request's fork.
296pub fn can_write(repo: &Repo, viewer: &Viewer) -> bool {
297 can(repo, viewer, Capability::Push)
298}
299
300/// Whether the viewer may do `capability` in `repo`. A fork has only its
301/// author's Write.
302pub fn can(repo: &Repo, viewer: &Viewer, capability: Capability) -> bool {
303 if repo.fork_of.is_some() {
304 return role(repo, viewer).is_some_and(|role| access::allows(role, capability))
305 && !access::OWNER_ONLY.contains(&capability);
306 }
307 access::can(viewer.as_ref(), repo, capability)
308}
309
310fn optional(value: &Option<String>) -> JsValue {
311 value.as_deref().map_or(JsValue::NULL, JsValue::from)
312}
313
314pub struct Registry {
315 pub db: D1Database,
316}
317
318impl Registry {
319 pub async fn by_path(&self, path: &RepoPath) -> Result<Option<Repo>> {
320 Ok(self
321 .db
322 .prepare("SELECT * FROM repos WHERE namespace = ? AND name = ? AND deleted_at IS NULL")
323 .bind(&[
324 path.namespace.to_lowercase().into(),
325 path.name.to_lowercase().into(),
326 ])?
327 .first::<RepoRow>(None)
328 .await?
329 .map(Repo::from))
330 }
331
332 /// The repository at `path`, as read in the last few seconds if it was
333 /// (see [`RECENT_MS`]). For fetches only: a push always reads the row.
334 pub async fn by_path_recent(&self, path: &RepoPath) -> Result<Option<Repo>> {
335 let now = g1t_kit::now_ms();
336 if let Some(repo) = RECENT.with(|recent| recent.borrow().get(path, now)) {
337 return Ok(Some(repo));
338 }
339 let found = self.by_path(path).await?;
340 if let Some(repo) = &found {
341 RECENT.with(|recent| recent.borrow_mut().keep(path, repo, now));
342 }
343 Ok(found)
344 }
345
346 /// Its details; who can see it changes with `set_private`.
347 pub async fn update(
348 &self,
349 id: &str,
350 description: Option<&str>,
351 protected: bool,
352 topics: &[String],
353 website: Option<&str>,
354 ) -> Result<()> {
355 self.db
356 .prepare("UPDATE repos SET description = ?, protected = ?, topics = ?, website = ? WHERE id = ?")
357 .bind(&[
358 description.map_or(JsValue::NULL, JsValue::from),
359 u32::from(protected).into(),
360 serde_json::to_string(topics)?.into(),
361 website.map_or(JsValue::NULL, JsValue::from),
362 id.into(),
363 ])?
364 .run()
365 .await?;
366 Ok(())
367 }
368
369 pub async fn by_id(&self, id: &str) -> Result<Option<Repo>> {
370 Ok(self
371 .db
372 .prepare("SELECT * FROM repos WHERE id = ? AND deleted_at IS NULL")
373 .bind(&[id.into()])?
374 .first::<RepoRow>(None)
375 .await?
376 .map(Repo::from))
377 }
378
379 /// The repository at `path`, deleted or not: what holds the name.
380 pub async fn by_path_any(&self, path: &RepoPath) -> Result<Option<(Repo, Option<String>)>> {
381 Ok(self
382 .db
383 .prepare("SELECT * FROM repos WHERE namespace = ? AND name = ?")
384 .bind(&[
385 path.namespace.to_lowercase().into(),
386 path.name.to_lowercase().into(),
387 ])?
388 .first::<RepoRow>(None)
389 .await?
390 .map(|mut row| {
391 let deleted_at = row.deleted_at.take();
392 (Repo::from(row), deleted_at)
393 }))
394 }
395
396 /// Repos the viewer may see, newest first. Excludes pull request forks.
397 /// With `member_only`, only repos in the viewer's own workspaces.
398 pub async fn list(
399 &self,
400 viewer: &Viewer,
401 query: Option<&str>,
402 namespace: Option<&str>,
403 member_only: bool,
404 ) -> Result<Vec<Repo>> {
405 let workspaces: Vec<&str> = viewer
406 .iter()
407 .flat_map(|user| &user.workspaces)
408 .map(|membership| membership.slug.as_str())
409 .collect();
410 // The workspaces whose private repositories the viewer reads all
411 // of (an owner, or a base permission other than none), and the
412 // repositories they were given a role on: see access.rs. A probe
413 // repository in each workspace stands for all of them.
414 let reading: Vec<&str> = viewer
415 .iter()
416 .flat_map(|user| {
417 user.workspaces.iter().filter(move |membership| {
418 let probe = access::RepoRef { id: "", namespace: &membership.slug, private: true };
419 access::granted(user, probe).is_some()
420 })
421 })
422 .map(|membership| membership.slug.as_str())
423 .collect();
424 let granted: Vec<&str> = viewer
425 .iter()
426 .flat_map(|user| &user.grants)
427 .map(|grant| grant.repo_id.as_str())
428 .collect();
429 let mut params: Vec<JsValue> = vec![
430 serde_json::to_string(&reading)?.into(),
431 serde_json::to_string(&granted)?.into(),
432 ];
433 let private_ok = "(namespace IN (SELECT value FROM json_each(?)) OR id IN (SELECT value FROM json_each(?)))";
434 let mut conditions = vec![
435 "fork_of IS NULL AND deleted_at IS NULL".to_owned(),
436 format!("(is_private = 0 OR {private_ok})"),
437 ];
438 if member_only {
439 conditions.push("namespace IN (SELECT value FROM json_each(?))".to_owned());
440 params.push(serde_json::to_string(&workspaces)?.into());
441 }
442 if let Some(namespace) = namespace {
443 conditions.push("namespace = ?".to_owned());
444 params.push(namespace.to_lowercase().into());
445 }
446 if let Some(query) = query.map(str::trim).filter(|query| !query.is_empty()) {
447 conditions
448 .push("(name LIKE ? ESCAPE '\\' OR description LIKE ? ESCAPE '\\')".to_owned());
449 // LIKE wildcards in the query are matched literally.
450 let escaped: String = query
451 .chars()
452 .flat_map(|c| match c {
453 '\\' | '%' | '_' => vec!['\\', c],
454 _ => vec![c],
455 })
456 .collect();
457 let pattern = format!("%{escaped}%");
458 params.push(pattern.as_str().into());
459 params.push(pattern.into());
460 }
461 let sql = format!(
462 "SELECT * FROM repos WHERE {} ORDER BY created_at DESC, id DESC LIMIT 50",
463 conditions.join(" AND ")
464 );
465 let rows = self
466 .db
467 .prepare(sql)
468 .bind(&params)?
469 .all()
470 .await?
471 .results::<RepoRow>()?;
472 Ok(rows.into_iter().map(Repo::from).collect())
473 }
474
475 /// Of these ids, the repositories (not forks) the viewer may read.
476 pub async fn readable(&self, ids: &[String], viewer: &Viewer) -> Result<Vec<Repo>> {
477 let ids: Vec<&String> = ids.iter().take(g1t_contracts::repos::MAX_READABLE).collect();
478 if ids.is_empty() {
479 return Ok(Vec::new());
480 }
481 // One parameter however many ids: D1 binds at most 100.
482 let rows = self
483 .db
484 .prepare(
485 "SELECT * FROM repos
486 WHERE id IN (SELECT value FROM json_each(?)) AND fork_of IS NULL AND deleted_at IS NULL",
487 )
488 .bind(&[serde_json::to_string(&ids)?.into()])?
489 .all()
490 .await?
491 .results::<RepoRow>()?;
492 Ok(rows
493 .into_iter()
494 .map(Repo::from)
495 .filter(|repo| can_read(repo, viewer))
496 .collect())
497 }
498
499 /// The workspaces in which this account made a public repository.
500 pub async fn public_namespaces(&self, owner_id: &str) -> Result<Vec<String>> {
501 #[derive(Deserialize)]
502 struct Row {
503 namespace: String,
504 }
505 Ok(self
506 .db
507 .prepare(
508 "SELECT DISTINCT namespace FROM repos
509 WHERE owner_id = ? AND is_private = 0 AND fork_of IS NULL AND deleted_at IS NULL
510 ORDER BY namespace",
511 )
512 .bind(&[owner_id.into()])?
513 .all()
514 .await?
515 .results::<Row>()?
516 .into_iter()
517 .map(|row| row.namespace)
518 .collect())
519 }
520
521 /// Repositories that are not forks, by id, a page at a time.
522 pub async fn ids_after(&self, after: Option<&str>, limit: u32) -> Result<Vec<String>> {
523 #[derive(Deserialize)]
524 struct Row {
525 id: String,
526 }
527 Ok(self
528 .db
529 .prepare("SELECT id FROM repos WHERE fork_of IS NULL AND deleted_at IS NULL AND id > ? ORDER BY id LIMIT ?")
530 .bind(&[after.unwrap_or("").into(), limit.into()])?
531 .all()
532 .await?
533 .results::<Row>()?
534 .into_iter()
535 .map(|row| row.id)
536 .collect())
537 }
538
539 /// Adds a pushed pack's bytes to what the repository is counted as
540 /// holding: its own, or, for a pull request's working copy, the
541 /// repository it is a copy of, whose storage it is.
542 pub async fn add_stored_bytes(&self, repo: &Repo, bytes: u64) -> Result<()> {
543 if bytes == 0 {
544 return Ok(());
545 }
546 let root = repo.fork_of.as_deref().unwrap_or(&repo.id);
547 self.db
548 .prepare("UPDATE repos SET stored_bytes = stored_bytes + ? WHERE id = ?")
549 .bind(&[(bytes as f64).into(), root.into()])?
550 .run()
551 .await?;
552 Ok(())
553 }
554
555 /// Which of these `namespace/name` paths are private. A working copy
556 /// answers as its repository. Unknown paths are left out.
557 pub async fn visibility(&self, paths: &[String]) -> Result<Vec<g1t_contracts::repos::RepoVisibility>> {
558 let mut out = Vec::new();
559 for path in paths.iter().take(50) {
560 let Some((namespace, name)) = path.split_once('/') else { continue };
561 let Some(repo) = self
562 .by_path(&RepoPath { namespace: namespace.to_owned(), name: name.to_owned() })
563 .await?
564 else {
565 continue;
566 };
567 let is_private = match &repo.fork_of {
568 Some(parent) => self.by_id(parent).await?.map_or(repo.is_private, |parent| parent.is_private),
569 None => repo.is_private,
570 };
571 out.push(g1t_contracts::repos::RepoVisibility { path: path.clone(), is_private });
572 }
573 Ok(out)
574 }
575
576 /// What each workspace's repositories are counted as holding, private
577 /// and public apart. Working copies count toward their repository.
578 pub async fn storage(&self) -> Result<Vec<g1t_contracts::repos::WorkspaceStorage>> {
579 #[derive(Deserialize)]
580 struct Row {
581 namespace: String,
582 private_bytes: Option<f64>,
583 public_bytes: Option<f64>,
584 }
585 Ok(self
586 .db
587 .prepare(
588 "SELECT namespace,
589 SUM(CASE WHEN is_private = 1 THEN stored_bytes ELSE 0 END) AS private_bytes,
590 SUM(CASE WHEN is_private = 0 THEN stored_bytes ELSE 0 END) AS public_bytes
591 FROM repos WHERE fork_of IS NULL AND deleted_at IS NULL AND stored_bytes > 0 GROUP BY namespace",
592 )
593 .all()
594 .await?
595 .results::<Row>()?
596 .into_iter()
597 .map(|row| g1t_contracts::repos::WorkspaceStorage {
598 namespace: row.namespace,
599 private_bytes: row.private_bytes.unwrap_or(0.0) as i64,
600 public_bytes: row.public_bytes.unwrap_or(0.0) as i64,
601 })
602 .collect())
603 }
604
605 /// What one workspace's private repositories are counted as holding.
606 pub async fn private_bytes(&self, namespace: &str) -> Result<i64> {
607 #[derive(Deserialize)]
608 struct Row {
609 bytes: Option<f64>,
610 }
611 Ok(self
612 .db
613 .prepare("SELECT SUM(stored_bytes) AS bytes FROM repos WHERE namespace = ? AND is_private = 1 AND fork_of IS NULL AND deleted_at IS NULL")
614 .bind(&[namespace.into()])?
615 .first::<Row>(None)
616 .await?
617 .and_then(|row| row.bytes)
618 .unwrap_or(0.0) as i64)
619 }
620
621 /// Forgets a repository that could not be filled.
622 pub async fn remove(&self, id: &str) -> Result<()> {
623 self.db
624 .prepare("DELETE FROM repos WHERE id = ?")
625 .bind(&[id.into()])?
626 .run()
627 .await?;
628 Ok(())
629 }
630
631 /// Picks the store key for a repository about to be made, and
632 /// remembers it: the one its path gives, unless a repository already
633 /// holds that (one made in a workspace that has since been renamed,
634 /// whose old name this workspace now has), when its id.
635 ///
636 /// `namespace` is the git store namespace it goes in (shards.rs), or
637 /// `None` for the default, `default`. A name is taken in any of them.
638 pub async fn claim_store_key(&self, repo: &Repo, namespace: Option<&str>, default: &str) -> Result<String> {
639 let wanted = path_key(repo);
640 let held = self
641 .db
642 .prepare(
643 "SELECT 1 AS held FROM repos
644 WHERE store = ?1 OR (instr(store, '/') > 0 AND substr(store, instr(store, '/') + 1) = ?1)
645 UNION ALL
646 SELECT 1 AS held FROM repo_move_copies WHERE name = ?1 AND cleaned_ms IS NULL",
647 )
648 .bind(&[wanted.as_str().into()])?
649 .first::<serde_json::Value>(None)
650 .await?
651 .is_some();
652 let name = if held { repo.id.clone() } else { wanted };
653 let key = crate::shards::compose(namespace, &name, default);
654 remember_store(repo, &key);
655 Ok(key)
656 }
657
658
659 /// Moves a renamed workspace's repositories to its current slug, from
660 /// any of `stale`. A repository whose name the current slug already has
661 /// (one pushed there in the moment before this ran) stays where it is;
662 /// returns how many did.
663 pub async fn rename_namespace(&self, stale: &[String], current: &str) -> Result<usize> {
664 if stale.is_empty() {
665 return Ok(0);
666 }
667 let marks = vec!["?"; stale.len()].join(", ");
668 let mut moved: Vec<JsValue> = vec![current.into()];
669 moved.extend(stale.iter().map(|slug| JsValue::from(slug.as_str())));
670 let left: Vec<JsValue> = stale.iter().map(|slug| JsValue::from(slug.as_str())).collect();
671 let results = self
672 .db
673 .batch(vec![
674 self.db
675 .prepare(format!(
676 "UPDATE OR IGNORE repos SET namespace = ? WHERE namespace IN ({marks})"
677 ))
678 .bind(&moved)?,
679 self.db
680 .prepare(format!(
681 "SELECT count(*) AS left FROM repos WHERE namespace IN ({marks})"
682 ))
683 .bind(&left)?,
684 // Git operations follow the workspace, added together.
685 self.db
686 .prepare(format!(
687 "INSERT INTO git_operations (namespace, hour, operations)
688 SELECT ?, hour, SUM(operations) FROM git_operations WHERE namespace IN ({marks}) GROUP BY hour
689 ON CONFLICT (namespace, hour) DO UPDATE SET operations = git_operations.operations + excluded.operations"
690 ))
691 .bind(&moved)?,
692 self.db
693 .prepare(format!("DELETE FROM git_operations WHERE namespace IN ({marks})"))
694 .bind(&left)?,
695 // Paths repositories were transferred away from follow the
696 // workspace too, so the old slug's redirect then finds them.
697 self.db
698 .prepare(format!(
699 "UPDATE OR IGNORE repo_redirects SET namespace = ? WHERE namespace IN ({marks})"
700 ))
701 .bind(&moved)?,
702 ])
703 .await?;
704 #[derive(Deserialize)]
705 struct Left {
706 left: usize,
707 }
708 Ok(results
709 .get(1)
710 .map(|result| result.results::<Left>())
711 .transpose()?
712 .and_then(|rows| rows.into_iter().next())
713 .map_or(0, |row| row.left))
714 }
715
716 /// Records that the refs of the repository with this id changed, after
717 /// they did: what anything that lists them keeps goes stale.
718 pub async fn refs_moved(&self, id: &str) -> Result<()> {
719 self.bump_refs(
720 "UPDATE repos SET refs_version = refs_version + 1 WHERE id = ?
721 RETURNING refs_version, refs_open_until",
722 &[id.into()],
723 id,
724 )
725 .await
726 }
727
728 /// Records that a credential able to change the refs of the repository
729 /// with this id was handed out of g1t's hands, until `until`
730 /// (milliseconds): until then, nothing that lists them is kept.
731 pub async fn refs_open(&self, id: &str, until: u64) -> Result<()> {
732 self.bump_refs(
733 "UPDATE repos SET refs_version = refs_version + 1,
734 refs_open_until = max(coalesce(refs_open_until, 0), ?)
735 WHERE id = ? RETURNING refs_version, refs_open_until",
736 &[(until as f64).into(), id.into()],
737 id,
738 )
739 .await
740 }
741
742 async fn bump_refs(&self, sql: &str, params: &[JsValue], id: &str) -> Result<()> {
743 #[derive(Deserialize)]
744 struct Bumped {
745 refs_version: Option<f64>,
746 refs_open_until: Option<f64>,
747 }
748 let bumped = self
749 .db
750 .prepare(sql)
751 .bind(params)?
752 .first::<Bumped>(None)
753 .await?;
754 if let Some(bumped) = bumped {
755 note_refs(id, bumped.refs_version, bumped.refs_open_until);
756 }
757 Ok(())
758 }
759
760 pub async fn insert(&self, repo: &Repo) -> Result<()> {
761 self.db
762 .prepare(
763 "INSERT INTO repos
764 (id, namespace, name, description, is_private, owner_id,
765 default_branch, fork_of, created_at, store)
766 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
767 )
768 .bind(&[
769 repo.id.as_str().into(),
770 repo.namespace.as_str().into(),
771 repo.name.as_str().into(),
772 optional(&repo.description),
773 (repo.is_private as u8).into(),
774 repo.owner_id.as_str().into(),
775 repo.default_branch.as_str().into(),
776 optional(&repo.fork_of),
777 repo.created_at.as_str().into(),
778 store_key(repo).into(),
779 ])?
780 .run()
781 .await?;
782 Ok(())
783 }
784}
785
786#[cfg(test)]
787mod tests {
788 use super::*;
789 use g1t_contracts::access::{BasePermission, RepoGrant};
790 use g1t_contracts::{Membership, Role, User};
791
792 #[test]
793 fn the_refs_state_kept_only_moves_forward() {
794 let mut states = RefsStates::default();
795 assert_eq!(states.get("rep_1"), None);
796 states.note("rep_1", RefsState { version: 3, open_until: 0 });
797 // A read that started before a bump and finished after it.
798 states.note("rep_1", RefsState { version: 2, open_until: 0 });
799 assert_eq!(states.get("rep_1").unwrap().version, 3);
800 states.note("rep_1", RefsState { version: 4, open_until: 9_000 });
801 states.note("rep_1", RefsState { version: 5, open_until: 0 });
802 assert_eq!(states.get("rep_1"), Some(RefsState { version: 5, open_until: 9_000 }));
803 assert_eq!(states.get("rep_2"), None);
804 }
805
806 #[test]
807 fn a_row_from_before_the_column_has_no_refs_state() {
808 let row = |version: Option<f64>| RepoRow {
809 id: format!("rep_row_{}", version.is_some()),
810 namespace: "acme".into(),
811 name: "rocket".into(),
812 description: None,
813 is_private: 0,
814 owner_id: "usr_owner".into(),
815 default_branch: "main".into(),
816 fork_of: None,
817 protected: 0,
818 created_at: String::new(),
819 store: None,
820 topics: None,
821 website: None,
822 archived_at: None,
823 deleted_at: None,
824 refs_version: version,
825 refs_open_until: None,
826 retired_at: None,
827 retired_head: None,
828 writes_paused_until: None,
829 writes_paused_for: None,
830 };
831 let old = Repo::from(row(None));
832 assert_eq!(refs_state(&old.id), None);
833 let new = Repo::from(row(Some(7.0)));
834 assert_eq!(refs_state(&new.id), Some(RefsState { version: 7, open_until: 0 }));
835 }
836
837 #[test]
838 fn a_removed_working_copy_is_known_by_its_row() {
839 note_retired("rep_fork", Some("abc"));
840 assert_eq!(retired("rep_fork").as_deref(), Some("abc"));
841 note_retired("rep_fork", None);
842 assert_eq!(retired("rep_fork"), None);
843 }
844
845 #[test]
846 fn a_repository_read_a_moment_ago_is_reused_for_a_few_seconds() {
847 let mut recent = Recent::default();
848 let path = RepoPath {
849 namespace: "Acme".into(),
850 name: "Rocket".into(),
851 };
852 recent.keep(&path, &repo(false), 1_000);
853 // Paths are matched as the table matches them, ignoring case.
854 let lower = RepoPath {
855 namespace: "acme".into(),
856 name: "rocket".into(),
857 };
858 assert_eq!(recent.get(&lower, 1_000 + RECENT_MS - 1).unwrap().id, "rep_1");
859 assert!(recent.get(&lower, 1_000 + RECENT_MS).is_none());
860 let other = RepoPath {
861 namespace: "acme".into(),
862 name: "booster".into(),
863 };
864 assert!(recent.get(&other, 1_000).is_none());
865 // Keeping another later drops the stale row.
866 recent.keep(&other, &repo(true), 1_000 + RECENT_MS);
867 assert_eq!(recent.rows.len(), 1);
868 }
869
870 fn repo(private: bool) -> Repo {
871 Repo {
872 id: "rep_1".into(),
873 namespace: "acme".into(),
874 name: "rocket".into(),
875 description: None,
876 is_private: private,
877 owner_id: "usr_owner".into(),
878 default_branch: "main".into(),
879 fork_of: None,
880 protected: false,
881 created_at: String::new(),
882 topics: Vec::new(),
883 website: None,
884 archived_at: None,
885 }
886 }
887
888 fn person(id: &str, memberships: Vec<Membership>, grants: Vec<(&str, RepoRole)>) -> Viewer {
889 Some(User {
890 id: id.into(),
891 username: id.into(),
892 verified: true,
893 workspaces: memberships,
894 grants: grants
895 .into_iter()
896 .map(|(repo_id, role)| RepoGrant { repo_id: repo_id.into(), workspace: "acme".into(), role })
897 .collect(),
898 ..User::default()
899 })
900 }
901
902 /// What git asks: clone and fetch need Read on a private repository,
903 /// push needs Write.
904 #[test]
905 fn git_reads_with_read_and_pushes_with_write() {
906 let private = repo(true);
907 let reader = person("usr_r", vec![], vec![("rep_1", RepoRole::Read)]);
908 assert!(can_read(&private, &reader));
909 assert!(!can_write(&private, &reader));
910 let writer = person("usr_w", vec![], vec![("rep_1", RepoRole::Write)]);
911 assert!(can_read(&private, &writer) && can_write(&private, &writer));
912 let stranger = person("usr_s", vec![], vec![("rep_2", RepoRole::Admin)]);
913 assert!(!can_read(&private, &stranger) && !can_write(&private, &stranger));
914 assert!(!can_read(&private, &None));
915 // A public repository: anyone clones, nobody without Write pushes.
916 let public = repo(false);
917 assert!(can_read(&public, &None) && !can_write(&public, &None));
918 assert!(can_read(&public, &stranger) && !can_write(&public, &stranger));
919 }
920
921 #[test]
922 fn members_follow_the_base_permission_and_owners_have_admin() {
923 let private = repo(true);
924 let default_member = person("usr_m", vec![Membership::member("acme")], vec![]);
925 assert!(can_write(&private, &default_member));
926 assert!(!can(&private, &default_member, Capability::ManageIntegrations));
927 let none = Membership { base_permission: Some(BasePermission::None), ..Membership::member("acme") };
928 let locked_out = person("usr_n", vec![none.clone()], vec![]);
929 assert!(!can_read(&private, &locked_out));
930 let given = person("usr_g", vec![none], vec![("rep_1", RepoRole::Triage)]);
931 assert!(can_read(&private, &given) && !can_write(&private, &given));
932 let owner = person("usr_o", vec![Membership { role: Role::Owner, ..Membership::member("acme") }], vec![]);
933 assert_eq!(role(&private, &owner), Some(RepoRole::Admin));
934 assert!(can(&private, &owner, Capability::Delete));
935 }
936
937 #[test]
938 fn a_pull_requests_fork_is_its_authors() {
939 let fork = Repo {
940 namespace: "pulls".into(),
941 fork_of: Some("rep_1".into()),
942 owner_id: "usr_a".into(),
943 ..repo(true)
944 };
945 let author = person("usr_a", vec![], vec![]);
946 assert!(can_write(&fork, &author));
947 assert!(!can(&fork, &author, Capability::ManageSettings));
948 let other = person("usr_b", vec![Membership::member("acme")], vec![]);
949 assert!(!can_write(&fork, &other));
950 }
951}