| 1 | //! The repos service: repository metadata, contents, forks, landing, and |
| 2 | //! git over HTTPS. |
| 3 | //! |
| 4 | //! Other services reach it over `POST /rpc/<method>`; see |
| 5 | //! `g1t_contracts::repos` for the methods and their arguments. Any other |
| 6 | //! request is treated as git's smart HTTP protocol. |
| 7 | |
| 8 | mod diff; |
| 9 | mod git_http; |
| 10 | mod land; |
| 11 | mod registry; |
| 12 | mod store; |
| 13 | |
| 14 | use g1t_contracts::events::{GitPush, NewEvent, RepoCreated, RepoForked}; |
| 15 | use g1t_contracts::repos::*; |
| 16 | use g1t_contracts::time::rfc3339; |
| 17 | use g1t_contracts::{FailureCode, Outcome, User, Viewer, is_valid_repo_name, new_id}; |
| 18 | use g1t_kit::{args, js, now_ms, reply, rpc_method}; |
| 19 | use std::collections::{HashMap, HashSet, VecDeque}; |
| 20 | |
| 21 | use serde::Serialize; |
| 22 | use worker::wasm_bindgen::JsValue; |
| 23 | use worker::{Context, Env, Request, Response, Result, event}; |
| 24 | |
| 25 | use registry::{Registry, can_read, can_write, store_key}; |
| 26 | use store::{ArtifactsStore, GitRepo, GitStore, Scope}; |
| 27 | |
| 28 | /// Namespace that holds every pull request's fork: `pulls/<pull id>`. |
| 29 | const PULLS_NAMESPACE: &str = "pulls"; |
| 30 | const MAX_TEXT_BYTES: usize = 512 * 1024; |
| 31 | /// How far back a pull request may have forked and still be landed. |
| 32 | const MAX_ANCESTRY: u32 = 1000; |
| 33 | const SOURCE: &str = "repos"; |
| 34 | const UNVERIFIED: &str = "Confirm your email address first. Check your inbox, or resend the link from the banner on g1t.sh."; |
| 35 | |
| 36 | fn not_found<T>() -> Outcome<T> { |
| 37 | Outcome::fail(FailureCode::NotFound, "Repository not found.") |
| 38 | } |
| 39 | |
| 40 | /// Decoded text, or `None` when the file is too large or looks binary. |
| 41 | fn text_of(bytes: Vec<u8>) -> Option<String> { |
| 42 | if bytes.len() > MAX_TEXT_BYTES || bytes.contains(&0) { |
| 43 | return None; |
| 44 | } |
| 45 | Some(String::from_utf8_lossy(&bytes).into_owned()) |
| 46 | } |
| 47 | |
| 48 | fn is_readme(name: &str) -> bool { |
| 49 | matches!( |
| 50 | name.to_lowercase().as_str(), |
| 51 | "readme" | "readme.md" | "readme.markdown" | "readme.txt" |
| 52 | ) |
| 53 | } |
| 54 | |
| 55 | /// Whether `ancestor` is reachable from the newest commit in `history`. |
| 56 | /// |
| 57 | /// `history` is the first-parent chain, which is all the store lists; a fork |
| 58 | /// that merged the target branch in has the target's head on a second |
| 59 | /// parent, so the walk follows every parent. |
| 60 | async fn descends_from<R: GitRepo>(repo: &R, history: &[Commit], ancestor: &str) -> Result<bool> { |
| 61 | let known: HashMap<&str, &[String]> = history |
| 62 | .iter() |
| 63 | .map(|commit| (commit.hash.as_str(), commit.parents.as_slice())) |
| 64 | .collect(); |
| 65 | let mut seen = HashSet::new(); |
| 66 | let mut queue: Vec<String> = history |
| 67 | .first() |
| 68 | .map(|c| c.hash.clone()) |
| 69 | .into_iter() |
| 70 | .collect(); |
| 71 | while let Some(hash) = queue.pop() { |
| 72 | if hash == ancestor { |
| 73 | return Ok(true); |
| 74 | } |
| 75 | if !seen.insert(hash.clone()) || seen.len() > MAX_ANCESTRY as usize { |
| 76 | continue; |
| 77 | } |
| 78 | match known.get(hash.as_str()) { |
| 79 | Some(parents) => queue.extend(parents.iter().cloned()), |
| 80 | None => queue.extend(repo.parents(&hash).await?.unwrap_or_default()), |
| 81 | } |
| 82 | } |
| 83 | Ok(false) |
| 84 | } |
| 85 | |
| 86 | /// The commit closest to the newest in `history` that is also in `shared`: |
| 87 | /// where a fork and the repository it came from last agreed. |
| 88 | async fn nearest_ancestor_in<R: GitRepo>( |
| 89 | repo: &R, |
| 90 | history: &[Commit], |
| 91 | shared: &HashSet<String>, |
| 92 | ) -> Result<Option<String>> { |
| 93 | let known: HashMap<&str, &[String]> = history |
| 94 | .iter() |
| 95 | .map(|commit| (commit.hash.as_str(), commit.parents.as_slice())) |
| 96 | .collect(); |
| 97 | let mut seen = HashSet::new(); |
| 98 | let mut queue: VecDeque<String> = history |
| 99 | .first() |
| 100 | .map(|c| c.hash.clone()) |
| 101 | .into_iter() |
| 102 | .collect(); |
| 103 | while let Some(hash) = queue.pop_front() { |
| 104 | if shared.contains(&hash) { |
| 105 | return Ok(Some(hash)); |
| 106 | } |
| 107 | if !seen.insert(hash.clone()) || seen.len() > MAX_ANCESTRY as usize { |
| 108 | continue; |
| 109 | } |
| 110 | match known.get(hash.as_str()) { |
| 111 | Some(parents) => queue.extend(parents.iter().cloned()), |
| 112 | None => queue.extend(repo.parents(&hash).await?.unwrap_or_default()), |
| 113 | } |
| 114 | } |
| 115 | Ok(None) |
| 116 | } |
| 117 | |
| 118 | struct Repos<S: GitStore> { |
| 119 | registry: Registry, |
| 120 | store: S, |
| 121 | /// The events service, an RPC stub. |
| 122 | events: JsValue, |
| 123 | } |
| 124 | |
| 125 | impl<S: GitStore> Repos<S> { |
| 126 | async fn publish<T: Serialize>(&self, event: NewEvent<T>) -> Result<()> { |
| 127 | js::call(&self.events, "publish", &[js::to_js(&[event])?]).await?; |
| 128 | Ok(()) |
| 129 | } |
| 130 | |
| 131 | /// Resolves a repo the viewer may read; private repos look missing. |
| 132 | async fn readable(&self, path: &RepoPath, viewer: &Viewer) -> Result<Option<Repo>> { |
| 133 | Ok(self |
| 134 | .registry |
| 135 | .by_path(path) |
| 136 | .await? |
| 137 | .filter(|repo| can_read(repo, viewer))) |
| 138 | } |
| 139 | |
| 140 | async fn get(&self, a: GetArgs) -> Result<Outcome<Repo>> { |
| 141 | Ok(self |
| 142 | .readable(&a.path, &a.viewer) |
| 143 | .await? |
| 144 | .map_or_else(not_found, Outcome::Ok)) |
| 145 | } |
| 146 | |
| 147 | async fn get_by_id(&self, a: GetByIdArgs) -> Result<Outcome<Repo>> { |
| 148 | Ok(self |
| 149 | .registry |
| 150 | .by_id(&a.id) |
| 151 | .await? |
| 152 | .filter(|repo| can_read(repo, &a.viewer)) |
| 153 | .map_or_else(not_found, Outcome::Ok)) |
| 154 | } |
| 155 | |
| 156 | async fn create(&self, a: CreateArgs) -> Result<Outcome<Repo>> { |
| 157 | if !a.owner.verified { |
| 158 | return Ok(Outcome::fail(FailureCode::Forbidden, UNVERIFIED)); |
| 159 | } |
| 160 | let name = a.name.trim().to_lowercase(); |
| 161 | if !is_valid_repo_name(&name) { |
| 162 | return Ok(Outcome::fail( |
| 163 | FailureCode::Invalid, |
| 164 | "Use letters, digits, dots, hyphens and underscores only.", |
| 165 | )); |
| 166 | } |
| 167 | let namespace = a.namespace.trim().to_lowercase(); |
| 168 | if namespace.is_empty() { |
| 169 | return Ok(Outcome::fail( |
| 170 | FailureCode::Invalid, |
| 171 | "Say which workspace to create the repository in.", |
| 172 | )); |
| 173 | } |
| 174 | if !a.owner.is_member(&namespace) { |
| 175 | return Ok(Outcome::fail( |
| 176 | FailureCode::Forbidden, |
| 177 | "You are not a member of that workspace.", |
| 178 | )); |
| 179 | } |
| 180 | let path = RepoPath { namespace, name }; |
| 181 | if self.registry.by_path(&path).await?.is_some() { |
| 182 | return Ok(Outcome::fail( |
| 183 | FailureCode::Conflict, |
| 184 | "That workspace already has a repository with that name.", |
| 185 | )); |
| 186 | } |
| 187 | let now = now_ms(); |
| 188 | let repo = Repo { |
| 189 | id: new_id("rep", now), |
| 190 | namespace: path.namespace, |
| 191 | name: path.name, |
| 192 | description: a |
| 193 | .description |
| 194 | .map(|text| text.trim().to_owned()) |
| 195 | .filter(|text| !text.is_empty()), |
| 196 | is_private: a.is_private, |
| 197 | owner_id: a.owner.id.clone(), |
| 198 | default_branch: "main".to_owned(), |
| 199 | fork_of: None, |
| 200 | created_at: rfc3339(now), |
| 201 | }; |
| 202 | self.store |
| 203 | .create( |
| 204 | &store_key(&repo), |
| 205 | repo.description.as_deref(), |
| 206 | &repo.default_branch, |
| 207 | ) |
| 208 | .await?; |
| 209 | self.registry.insert(&repo).await?; |
| 210 | self.publish(NewEvent { |
| 211 | kind: "repo.created", |
| 212 | source: SOURCE, |
| 213 | repo_id: Some(repo.id.clone()), |
| 214 | actor: Some(a.owner.id), |
| 215 | data: RepoCreated { |
| 216 | repo_id: repo.id.clone(), |
| 217 | namespace: repo.namespace.clone(), |
| 218 | name: repo.name.clone(), |
| 219 | is_private: repo.is_private, |
| 220 | }, |
| 221 | }) |
| 222 | .await?; |
| 223 | Ok(Outcome::Ok(repo)) |
| 224 | } |
| 225 | |
| 226 | async fn tree(&self, a: TreeArgs) -> Result<Outcome<TreeView>> { |
| 227 | let Some(repo) = self.readable(&a.path, &a.viewer).await? else { |
| 228 | return Ok(not_found()); |
| 229 | }; |
| 230 | let git = self.store.open(&store_key(&repo)).await?; |
| 231 | let git_ref = a |
| 232 | .git_ref |
| 233 | .clone() |
| 234 | .unwrap_or_else(|| repo.default_branch.clone()); |
| 235 | |
| 236 | let Some(head) = git.log(&git_ref, 1).await?.into_iter().next() else { |
| 237 | // An unknown ref is an error; a repo with no commits is just empty. |
| 238 | if a.git_ref.is_some() { |
| 239 | return Ok(Outcome::fail( |
| 240 | FailureCode::NotFound, |
| 241 | "No such branch, tag or commit.", |
| 242 | )); |
| 243 | } |
| 244 | return Ok(Outcome::Ok(TreeView { |
| 245 | repo, |
| 246 | git_ref, |
| 247 | path: a.tree_path, |
| 248 | head: None, |
| 249 | entries: Vec::new(), |
| 250 | readme: None, |
| 251 | })); |
| 252 | }; |
| 253 | |
| 254 | let no_directory = || Outcome::fail(FailureCode::NotFound, "No such directory."); |
| 255 | let mut entries = git.read_tree(&head.tree_hash).await?; |
| 256 | for segment in a.tree_path.split('/').filter(|segment| !segment.is_empty()) { |
| 257 | let next = entries.as_ref().and_then(|entries| { |
| 258 | entries |
| 259 | .iter() |
| 260 | .find(|entry| entry.name == segment && entry.kind == EntryKind::Tree) |
| 261 | }); |
| 262 | let Some(next) = next else { |
| 263 | return Ok(no_directory()); |
| 264 | }; |
| 265 | entries = git.read_tree(&next.hash).await?; |
| 266 | } |
| 267 | let Some(mut entries) = entries else { |
| 268 | return Ok(no_directory()); |
| 269 | }; |
| 270 | // Directories first, then by name. |
| 271 | entries.sort_by(|a, b| { |
| 272 | (b.kind == EntryKind::Tree) |
| 273 | .cmp(&(a.kind == EntryKind::Tree)) |
| 274 | .then_with(|| a.name.cmp(&b.name)) |
| 275 | }); |
| 276 | |
| 277 | let readme_entry = entries |
| 278 | .iter() |
| 279 | .find(|entry| entry.kind == EntryKind::Blob && is_readme(&entry.name)); |
| 280 | let readme = match readme_entry { |
| 281 | Some(entry) => git.read_blob(&entry.hash).await?.map(|bytes| Readme { |
| 282 | name: entry.name.clone(), |
| 283 | text: text_of(bytes), |
| 284 | }), |
| 285 | None => None, |
| 286 | }; |
| 287 | Ok(Outcome::Ok(TreeView { |
| 288 | repo, |
| 289 | git_ref, |
| 290 | path: a.tree_path, |
| 291 | head: Some(head), |
| 292 | entries, |
| 293 | readme, |
| 294 | })) |
| 295 | } |
| 296 | |
| 297 | async fn blob(&self, a: BlobArgs) -> Result<Outcome<BlobView>> { |
| 298 | let Some(repo) = self.readable(&a.path, &a.viewer).await? else { |
| 299 | return Ok(not_found()); |
| 300 | }; |
| 301 | let bytes = if a.file_path.is_empty() { |
| 302 | None |
| 303 | } else { |
| 304 | let git = self.store.open(&store_key(&repo)).await?; |
| 305 | git.read_file(&a.git_ref, &a.file_path).await? |
| 306 | }; |
| 307 | let Some(bytes) = bytes else { |
| 308 | return Ok(Outcome::fail(FailureCode::NotFound, "No such file.")); |
| 309 | }; |
| 310 | Ok(Outcome::Ok(BlobView { |
| 311 | repo, |
| 312 | git_ref: a.git_ref, |
| 313 | path: a.file_path, |
| 314 | size: bytes.len() as u64, |
| 315 | text: text_of(bytes), |
| 316 | })) |
| 317 | } |
| 318 | |
| 319 | async fn log(&self, a: LogArgs) -> Result<Outcome<Vec<Commit>>> { |
| 320 | let Some(repo) = self.readable(&a.path, &a.viewer).await? else { |
| 321 | return Ok(not_found()); |
| 322 | }; |
| 323 | let git = self.store.open(&store_key(&repo)).await?; |
| 324 | let git_ref = a.git_ref.unwrap_or_else(|| repo.default_branch.clone()); |
| 325 | Ok(Outcome::Ok(git.log(&git_ref, a.limit).await?)) |
| 326 | } |
| 327 | |
| 328 | async fn fork_for_pull(&self, a: ForkArgs) -> Result<Outcome<Repo>> { |
| 329 | let viewer = Some(a.actor.clone()); |
| 330 | let Some(source) = self |
| 331 | .registry |
| 332 | .by_id(&a.source_id) |
| 333 | .await? |
| 334 | .filter(|repo| can_read(repo, &viewer)) |
| 335 | else { |
| 336 | return Ok(not_found()); |
| 337 | }; |
| 338 | let now = now_ms(); |
| 339 | let fork = Repo { |
| 340 | id: new_id("rep", now), |
| 341 | namespace: PULLS_NAMESPACE.to_owned(), |
| 342 | name: a.pull_id.clone(), |
| 343 | description: None, |
| 344 | // A fork is exactly as visible as the repo it came from. |
| 345 | is_private: source.is_private, |
| 346 | owner_id: a.actor.id.clone(), |
| 347 | default_branch: source.default_branch.clone(), |
| 348 | fork_of: Some(source.id.clone()), |
| 349 | created_at: rfc3339(now), |
| 350 | }; |
| 351 | self.store |
| 352 | .open(&store_key(&source)) |
| 353 | .await? |
| 354 | .fork(&store_key(&fork)) |
| 355 | .await?; |
| 356 | self.registry.insert(&fork).await?; |
| 357 | self.publish(NewEvent { |
| 358 | kind: "repo.forked", |
| 359 | source: SOURCE, |
| 360 | repo_id: Some(source.id.clone()), |
| 361 | actor: Some(a.actor.id), |
| 362 | data: RepoForked { |
| 363 | repo_id: fork.id.clone(), |
| 364 | source_repo_id: source.id, |
| 365 | pull_id: a.pull_id, |
| 366 | }, |
| 367 | }) |
| 368 | .await?; |
| 369 | Ok(Outcome::Ok(fork)) |
| 370 | } |
| 371 | |
| 372 | async fn git_access(&self, a: GitAccessArgs) -> Result<Outcome<GitAccess>> { |
| 373 | let write = a.service == GitService::ReceivePack; |
| 374 | // Anonymous callers are asked to authenticate whether or not the repo |
| 375 | // exists, so private repos cannot be told apart from missing ones. |
| 376 | let denied = || match &a.viewer { |
| 377 | Some(_) => not_found(), |
| 378 | None => Outcome::fail(FailureCode::Unauthenticated, "Authentication required."), |
| 379 | }; |
| 380 | if let (true, Some(user)) = (write, &a.viewer) |
| 381 | && !user.verified |
| 382 | { |
| 383 | return Ok(Outcome::fail(FailureCode::Forbidden, UNVERIFIED)); |
| 384 | } |
| 385 | |
| 386 | let repo = match self.registry.by_path(&a.path).await? { |
| 387 | Some(repo) => { |
| 388 | let allowed = if write { |
| 389 | can_write(&repo, &a.viewer) |
| 390 | } else { |
| 391 | can_read(&repo, &a.viewer) |
| 392 | }; |
| 393 | if !allowed { |
| 394 | return Ok(denied()); |
| 395 | } |
| 396 | repo |
| 397 | } |
| 398 | None => { |
| 399 | // Push to create, in a workspace the pusher belongs to. |
| 400 | let owner = a |
| 401 | .viewer |
| 402 | .as_ref() |
| 403 | .filter(|user| write && user.is_member(&a.path.namespace.to_lowercase())); |
| 404 | let Some(owner) = owner else { |
| 405 | return Ok(denied()); |
| 406 | }; |
| 407 | let created = self |
| 408 | .create(CreateArgs { |
| 409 | owner: owner.clone(), |
| 410 | namespace: a.path.namespace.clone(), |
| 411 | name: a.path.name.clone(), |
| 412 | description: None, |
| 413 | is_private: false, |
| 414 | }) |
| 415 | .await?; |
| 416 | match created { |
| 417 | Outcome::Ok(repo) => repo, |
| 418 | Outcome::Fail(failure) => return Ok(Outcome::Fail(failure)), |
| 419 | } |
| 420 | } |
| 421 | }; |
| 422 | let git = self.store.open(&store_key(&repo)).await?; |
| 423 | let scope = if write { Scope::Write } else { Scope::Read }; |
| 424 | Ok(Outcome::Ok(git.access(scope).await?)) |
| 425 | } |
| 426 | |
| 427 | async fn land(&self, a: LandArgs) -> Result<Outcome<Landed>> { |
| 428 | let actor: Viewer = Some(a.actor.clone()); |
| 429 | let Some(fork) = self.registry.by_id(&a.fork_id).await? else { |
| 430 | return Ok(not_found()); |
| 431 | }; |
| 432 | let target = match &fork.fork_of { |
| 433 | Some(id) => self.registry.by_id(id).await?, |
| 434 | None => None, |
| 435 | }; |
| 436 | let Some(target) = target.filter(|repo| can_read(repo, &actor)) else { |
| 437 | return Ok(not_found()); |
| 438 | }; |
| 439 | if !can_write(&target, &actor) { |
| 440 | return Ok(Outcome::fail( |
| 441 | FailureCode::Forbidden, |
| 442 | "Only members of the repository's workspace can merge a pull request.", |
| 443 | )); |
| 444 | } |
| 445 | if !a.actor.verified { |
| 446 | return Ok(Outcome::fail(FailureCode::Forbidden, UNVERIFIED)); |
| 447 | } |
| 448 | |
| 449 | let branch = &target.default_branch; |
| 450 | let fork_git = self.store.open(&store_key(&fork)).await?; |
| 451 | let target_git = self.store.open(&store_key(&target)).await?; |
| 452 | let history = fork_git.log(branch, MAX_ANCESTRY).await?; |
| 453 | let Some(new) = history.first().map(|commit| commit.hash.clone()) else { |
| 454 | return Ok(Outcome::fail( |
| 455 | FailureCode::Conflict, |
| 456 | "This pull request has no commits to merge.", |
| 457 | )); |
| 458 | }; |
| 459 | let old = target_git |
| 460 | .log(branch, 1) |
| 461 | .await? |
| 462 | .into_iter() |
| 463 | .next() |
| 464 | .map(|commit| commit.hash); |
| 465 | |
| 466 | if old.as_deref() == Some(new.as_str()) { |
| 467 | return Ok(Outcome::Ok(Landed { |
| 468 | commit: new, |
| 469 | previous: None, |
| 470 | })); |
| 471 | } |
| 472 | // Moving the branch to a commit that does not descend from its |
| 473 | // current head would discard whatever landed in between. |
| 474 | if let Some(old) = &old |
| 475 | && !descends_from(&fork_git, &history, old).await? |
| 476 | { |
| 477 | return Ok(Outcome::fail( |
| 478 | FailureCode::Conflict, |
| 479 | format!( |
| 480 | "{branch} has moved since this pull request was opened. Pull {branch} into the pull request's fork, push, and merge again." |
| 481 | ), |
| 482 | )); |
| 483 | } |
| 484 | |
| 485 | let source_access = fork_git.access(Scope::Read).await?; |
| 486 | let target_access = target_git.access(Scope::Write).await?; |
| 487 | let pushed = |
| 488 | land::fast_forward(&source_access, &target_access, branch, old.as_deref(), &new) |
| 489 | .await?; |
| 490 | if let Err(reason) = pushed { |
| 491 | // Most often another pull request landed between the check and the push. |
| 492 | return Ok(Outcome::fail( |
| 493 | FailureCode::Conflict, |
| 494 | format!("{branch} could not be updated: {reason}"), |
| 495 | )); |
| 496 | } |
| 497 | self.publish_push(&target, &new, Some(a.actor.id)).await?; |
| 498 | Ok(Outcome::Ok(Landed { |
| 499 | commit: new, |
| 500 | previous: old, |
| 501 | })) |
| 502 | } |
| 503 | |
| 504 | async fn compare(&self, a: CompareArgs) -> Result<Outcome<Comparison>> { |
| 505 | let Some(repo) = self |
| 506 | .registry |
| 507 | .by_id(&a.repo_id) |
| 508 | .await? |
| 509 | .filter(|repo| can_read(repo, &a.viewer)) |
| 510 | else { |
| 511 | return Ok(not_found()); |
| 512 | }; |
| 513 | let git = self.store.open(&store_key(&repo)).await?; |
| 514 | let history = git.log(&repo.default_branch, MAX_ANCESTRY).await?; |
| 515 | let Some(head) = history.first() else { |
| 516 | return Ok(Outcome::fail( |
| 517 | FailureCode::Conflict, |
| 518 | "This repository has no commits yet.", |
| 519 | )); |
| 520 | }; |
| 521 | |
| 522 | let base = match (a.base, &repo.fork_of) { |
| 523 | (Some(base), _) => Some(base), |
| 524 | // A fork is compared with the last commit it shares with the |
| 525 | // repository it came from. |
| 526 | (None, Some(target_id)) => match self.registry.by_id(target_id).await? { |
| 527 | Some(target) => { |
| 528 | let target_git = self.store.open(&store_key(&target)).await?; |
| 529 | let shared: HashSet<String> = target_git |
| 530 | .log(&target.default_branch, MAX_ANCESTRY) |
| 531 | .await? |
| 532 | .into_iter() |
| 533 | .map(|commit| commit.hash) |
| 534 | .collect(); |
| 535 | nearest_ancestor_in(&git, &history, &shared).await? |
| 536 | } |
| 537 | None => None, |
| 538 | }, |
| 539 | (None, None) => head.parents.first().cloned(), |
| 540 | }; |
| 541 | let base_tree = match &base { |
| 542 | Some(base) => git |
| 543 | .log(base, 1) |
| 544 | .await? |
| 545 | .into_iter() |
| 546 | .next() |
| 547 | .map(|commit| commit.tree_hash), |
| 548 | None => None, |
| 549 | }; |
| 550 | let (files, truncated) = |
| 551 | diff::compare_trees(&git, base_tree.as_deref(), &head.tree_hash).await?; |
| 552 | Ok(Outcome::Ok(Comparison { |
| 553 | base, |
| 554 | head: head.hash.clone(), |
| 555 | files, |
| 556 | truncated, |
| 557 | })) |
| 558 | } |
| 559 | |
| 560 | async fn publish_push(&self, repo: &Repo, after: &str, actor: Option<String>) -> Result<()> { |
| 561 | self.publish(NewEvent { |
| 562 | kind: "git.push", |
| 563 | source: SOURCE, |
| 564 | repo_id: Some(repo.id.clone()), |
| 565 | actor, |
| 566 | data: GitPush { |
| 567 | repo_id: repo.id.clone(), |
| 568 | git_ref: format!("refs/heads/{}", repo.default_branch), |
| 569 | after: after.to_owned(), |
| 570 | }, |
| 571 | }) |
| 572 | .await |
| 573 | } |
| 574 | |
| 575 | /// Git over HTTPS. |
| 576 | async fn git_http(&self, request: Request, env: &Env) -> Result<Response> { |
| 577 | let Some(git) = git_http::parse(&request.url()?) else { |
| 578 | return Response::error("Not found", 404); |
| 579 | }; |
| 580 | let viewer = git_http::viewer(&request, &env.service("IDENTITY")?).await?; |
| 581 | let access = self |
| 582 | .git_access(GitAccessArgs { |
| 583 | path: git.path.clone(), |
| 584 | viewer: viewer.clone(), |
| 585 | service: git.service, |
| 586 | }) |
| 587 | .await?; |
| 588 | let access = match access { |
| 589 | Outcome::Ok(access) => access, |
| 590 | refused => return git_http::refuse(refused), |
| 591 | }; |
| 592 | let response = git_http::forward(request, &git, &access).await?; |
| 593 | |
| 594 | // Artifacts' own push notifications are per repository, which does |
| 595 | // not fit a repo per pull request, so the front end reports pushes itself. |
| 596 | let pushed = git.endpoint == "git-receive-pack" && response.status_code() == 200; |
| 597 | if pushed && let Some(repo) = self.registry.by_path(&git.path).await? { |
| 598 | let head = self |
| 599 | .store |
| 600 | .open(&store_key(&repo)) |
| 601 | .await? |
| 602 | .log(&repo.default_branch, 1) |
| 603 | .await?; |
| 604 | if let Some(head) = head.first() { |
| 605 | self.publish_push(&repo, &head.hash, viewer.map(|user: User| user.id)) |
| 606 | .await?; |
| 607 | } |
| 608 | } |
| 609 | Ok(response) |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | #[event(fetch)] |
| 614 | async fn fetch(mut request: Request, env: Env, _ctx: Context) -> Result<Response> { |
| 615 | let repos = Repos { |
| 616 | registry: Registry { db: env.d1("DB")? }, |
| 617 | store: ArtifactsStore::new(&env)?, |
| 618 | events: js::binding(&env, "EVENTS")?, |
| 619 | }; |
| 620 | let Some(method) = rpc_method(&request) else { |
| 621 | return repos.git_http(request, &env).await; |
| 622 | }; |
| 623 | let body: serde_json::Value = request.json().await?; |
| 624 | |
| 625 | match method.as_str() { |
| 626 | "get" => reply(&repos.get(args(body)?).await?), |
| 627 | "get_by_id" => reply(&repos.get_by_id(args(body)?).await?), |
| 628 | "list" => { |
| 629 | let a: ListArgs = args(body)?; |
| 630 | reply( |
| 631 | &repos |
| 632 | .registry |
| 633 | .list( |
| 634 | &a.viewer, |
| 635 | a.query.as_deref(), |
| 636 | a.namespace.as_deref(), |
| 637 | a.member_only, |
| 638 | ) |
| 639 | .await?, |
| 640 | ) |
| 641 | } |
| 642 | "create" => reply(&repos.create(args(body)?).await?), |
| 643 | "tree" => reply(&repos.tree(args(body)?).await?), |
| 644 | "blob" => reply(&repos.blob(args(body)?).await?), |
| 645 | "log" => reply(&repos.log(args(body)?).await?), |
| 646 | "fork_for_pull" => reply(&repos.fork_for_pull(args(body)?).await?), |
| 647 | "git_access" => reply(&repos.git_access(args(body)?).await?), |
| 648 | "land" => reply(&repos.land(args(body)?).await?), |
| 649 | "compare" => reply(&repos.compare(args(body)?).await?), |
| 650 | _ => Response::error("Unknown method", 404), |
| 651 | } |
| 652 | } |