| 1 | //! Transferring a repository to another workspace. |
| 2 | //! |
| 3 | //! A repository keeps its id, its name and its git store key; only its |
| 4 | //! namespace changes, so its git data does not move at all. The path it |
| 5 | //! left is kept in `repo_redirects`, pointing at its id, so old links, git |
| 6 | //! remotes and API calls resolve to wherever it is now, however many times |
| 7 | //! it has moved since. A redirect stops when a repository is made at its |
| 8 | //! path. |
| 9 | //! |
| 10 | //! Everything other services keep under the repository's path or its |
| 11 | //! workspace's slug follows on `repo.transferred` (see |
| 12 | //! `g1t_kit::transfer`); the tokens of agents at work on it are moved here, |
| 13 | //! with identity, before the event goes out, so a run under way keeps |
| 14 | //! working. |
| 15 | |
| 16 | use g1t_contracts::audit::{ |
| 17 | AuditActor, AuditOutcome, AuditTarget, NewAuditEntry, RecordAuditArgs, Surface, |
| 18 | }; |
| 19 | use g1t_contracts::events::{NewEvent, RepoTransferred}; |
| 20 | use g1t_contracts::identity::TransferRepoScopesArgs; |
| 21 | use g1t_contracts::repos::{Repo, RepoPath, TransferArgs}; |
| 22 | use g1t_contracts::time::rfc3339; |
| 23 | use g1t_contracts::{FailureCode, Outcome, PrincipalKind, Role, new_id}; |
| 24 | use g1t_kit::now_ms; |
| 25 | use serde::Deserialize; |
| 26 | use worker::Result; |
| 27 | |
| 28 | use crate::registry::Registry; |
| 29 | use crate::store::GitStore; |
| 30 | use crate::{Repos, SOURCE, UNVERIFIED, git_ops, not_found}; |
| 31 | |
| 32 | /// Everything about a transfer that decides whether it may happen, as read |
| 33 | /// from the request and the database. |
| 34 | #[derive(Debug, Default)] |
| 35 | pub struct Facts { |
| 36 | /// The actor is a person, not a workspace's or an agent's token. |
| 37 | pub person: bool, |
| 38 | pub verified: bool, |
| 39 | pub role_in_source: Option<Role>, |
| 40 | pub role_in_destination: Option<Role>, |
| 41 | /// A member (not an owner) of the source with the Admin role on the |
| 42 | /// repository, whose member privileges let admins delete and transfer. |
| 43 | pub admin_may_transfer: bool, |
| 44 | /// The destination's member privileges let its members create a |
| 45 | /// repository of this one's visibility. |
| 46 | pub may_create_in_destination: bool, |
| 47 | pub source: String, |
| 48 | pub destination: String, |
| 49 | pub name: String, |
| 50 | /// Another repository has the name in the destination. |
| 51 | pub name_taken: bool, |
| 52 | pub is_private: bool, |
| 53 | /// The repository's measured bytes. |
| 54 | pub bytes: i64, |
| 55 | /// The destination is on no plan, so its private storage is capped. |
| 56 | pub destination_free: bool, |
| 57 | /// What the destination's private repositories hold now. |
| 58 | pub destination_private_bytes: i64, |
| 59 | /// What a free workspace's private repositories may hold. |
| 60 | pub free_private_bytes: i64, |
| 61 | } |
| 62 | |
| 63 | /// Whether the transfer `facts` describe may happen: `Ok`, or why not, in |
| 64 | /// words for the person asking. |
| 65 | pub fn check(facts: &Facts) -> std::result::Result<(), (FailureCode, String)> { |
| 66 | let refuse = |code, message: String| Err((code, message)); |
| 67 | if !facts.person { |
| 68 | return refuse( |
| 69 | FailureCode::Forbidden, |
| 70 | "Only a person can transfer a repository. Sign in, or use a personal access token.".into(), |
| 71 | ); |
| 72 | } |
| 73 | let source_ok = facts.role_in_source == Some(Role::Owner) |
| 74 | || (facts.role_in_source == Some(Role::Member) && facts.admin_may_transfer); |
| 75 | if !source_ok { |
| 76 | return refuse( |
| 77 | FailureCode::Forbidden, |
| 78 | format!( |
| 79 | "Only an owner of {} can transfer its repositories, unless its member privileges let repository admins.", |
| 80 | facts.source |
| 81 | ), |
| 82 | ); |
| 83 | } |
| 84 | if !facts.verified { |
| 85 | return refuse(FailureCode::Forbidden, UNVERIFIED.into()); |
| 86 | } |
| 87 | if facts.destination.is_empty() { |
| 88 | return refuse(FailureCode::Invalid, "Say which workspace to transfer it to.".into()); |
| 89 | } |
| 90 | if facts.destination == facts.source { |
| 91 | return refuse( |
| 92 | FailureCode::Invalid, |
| 93 | format!("{}/{} is already in {}.", facts.source, facts.name, facts.destination), |
| 94 | ); |
| 95 | } |
| 96 | let destination_ok = facts.role_in_destination == Some(Role::Owner) |
| 97 | || (facts.role_in_destination == Some(Role::Member) && facts.may_create_in_destination); |
| 98 | if !destination_ok { |
| 99 | return refuse( |
| 100 | FailureCode::Forbidden, |
| 101 | format!( |
| 102 | "You can transfer a repository only to a workspace where you can create one, and you cannot in {}.", |
| 103 | facts.destination |
| 104 | ), |
| 105 | ); |
| 106 | } |
| 107 | if facts.name_taken { |
| 108 | return refuse( |
| 109 | FailureCode::Conflict, |
| 110 | format!( |
| 111 | "{} already has a repository named {}. Rename or remove that one first.", |
| 112 | facts.destination, facts.name |
| 113 | ), |
| 114 | ); |
| 115 | } |
| 116 | if facts.is_private |
| 117 | && facts.destination_free |
| 118 | && git_ops::storage_full(facts.destination_private_bytes + facts.bytes, facts.free_private_bytes) |
| 119 | { |
| 120 | return refuse( |
| 121 | FailureCode::PaymentRequired, |
| 122 | format!( |
| 123 | "{}'s private repositories would hold {:.2} GB, more than the {:.0} GB a free workspace has. Start the g1t plan in {}, or make the repository public first.", |
| 124 | facts.destination, |
| 125 | (facts.destination_private_bytes + facts.bytes) as f64 / 1e9, |
| 126 | facts.free_private_bytes as f64 / 1e9, |
| 127 | facts.destination |
| 128 | ), |
| 129 | ); |
| 130 | } |
| 131 | Ok(()) |
| 132 | } |
| 133 | |
| 134 | /// The redirect of an old path, as read with where its repository is now. |
| 135 | #[derive(Debug, Deserialize)] |
| 136 | struct Moved { |
| 137 | namespace: String, |
| 138 | name: String, |
| 139 | } |
| 140 | |
| 141 | impl Registry { |
| 142 | /// Moves a repository to `to`, keeping its old path as a redirect. Any |
| 143 | /// redirect held by the path it moves to gives way: a repository is |
| 144 | /// there now. |
| 145 | pub async fn transfer(&self, repo: &Repo, to: &str, cap: i64) -> Result<bool> { |
| 146 | let now = rfc3339(now_ms()); |
| 147 | let results = self.db |
| 148 | .batch(vec![ |
| 149 | self.db |
| 150 | .prepare(crate::public_storage::TRANSFER) |
| 151 | .bind(&[repo.id.as_str().into(), to.into(), repo.namespace.as_str().into(), (cap as f64).into()])?, |
| 152 | self.db |
| 153 | .prepare("DELETE FROM repo_redirects WHERE namespace = ?1 AND name = ?2 AND EXISTS (SELECT 1 FROM repos WHERE id = ?3 AND namespace = ?1)") |
| 154 | .bind(&[to.into(), repo.name.as_str().into(), repo.id.as_str().into()])?, |
| 155 | self.db |
| 156 | .prepare( |
| 157 | "INSERT OR REPLACE INTO repo_redirects (namespace, name, repo_id, created_at) |
| 158 | SELECT ?1, ?2, ?3, ?4 WHERE EXISTS (SELECT 1 FROM repos WHERE id = ?3 AND namespace = ?5)", |
| 159 | ) |
| 160 | .bind(&[ |
| 161 | repo.namespace.as_str().into(), |
| 162 | repo.name.as_str().into(), |
| 163 | repo.id.as_str().into(), |
| 164 | now.as_str().into(), |
| 165 | to.into(), |
| 166 | ])?, |
| 167 | ]) |
| 168 | .await?; |
| 169 | #[derive(Deserialize)] |
| 170 | struct Moved { #[serde(rename = "id")] _id: String } |
| 171 | Ok(!results[0].results::<Moved>()?.is_empty()) |
| 172 | } |
| 173 | |
| 174 | /// Where the repository that left `path` is now, unless a repository |
| 175 | /// is at `path` itself. |
| 176 | pub async fn resolve_moved(&self, path: &RepoPath) -> Result<Option<RepoPath>> { |
| 177 | Ok(self |
| 178 | .db |
| 179 | .prepare( |
| 180 | "SELECT repos.namespace, repos.name FROM repo_redirects |
| 181 | JOIN repos ON repos.id = repo_redirects.repo_id AND repos.deleted_at IS NULL |
| 182 | WHERE repo_redirects.namespace = ?1 AND repo_redirects.name = ?2 |
| 183 | AND NOT EXISTS (SELECT 1 FROM repos AS here WHERE here.namespace = ?1 AND here.name = ?2)", |
| 184 | ) |
| 185 | .bind(&[ |
| 186 | path.namespace.to_lowercase().into(), |
| 187 | path.name.to_lowercase().into(), |
| 188 | ])? |
| 189 | .first::<Moved>(None) |
| 190 | .await? |
| 191 | .map(|moved| RepoPath { |
| 192 | namespace: moved.namespace, |
| 193 | name: moved.name, |
| 194 | })) |
| 195 | } |
| 196 | |
| 197 | /// A repository made at `path` ends any redirect there. |
| 198 | pub async fn drop_redirect(&self, path: &RepoPath) -> Result<()> { |
| 199 | self.db |
| 200 | .prepare("DELETE FROM repo_redirects WHERE namespace = ? AND name = ?") |
| 201 | .bind(&[path.namespace.as_str().into(), path.name.as_str().into()])? |
| 202 | .run() |
| 203 | .await?; |
| 204 | Ok(()) |
| 205 | } |
| 206 | |
| 207 | /// How many repositories (not working copies) a workspace holds. |
| 208 | pub async fn count_in(&self, namespace: &str) -> Result<u32> { |
| 209 | #[derive(Deserialize)] |
| 210 | struct Count { |
| 211 | n: u32, |
| 212 | } |
| 213 | Ok(self |
| 214 | .db |
| 215 | .prepare("SELECT count(*) AS n FROM repos WHERE namespace = ? AND fork_of IS NULL AND deleted_at IS NULL") |
| 216 | .bind(&[namespace.to_lowercase().into()])? |
| 217 | .first::<Count>(None) |
| 218 | .await? |
| 219 | .map_or(0, |count| count.n)) |
| 220 | } |
| 221 | |
| 222 | /// The repository's measured bytes. |
| 223 | pub async fn stored_bytes(&self, id: &str) -> Result<i64> { |
| 224 | #[derive(Deserialize)] |
| 225 | struct Bytes { |
| 226 | stored_bytes: Option<f64>, |
| 227 | } |
| 228 | Ok(self |
| 229 | .db |
| 230 | .prepare("SELECT stored_bytes FROM repos WHERE id = ? AND deleted_at IS NULL") |
| 231 | .bind(&[id.into()])? |
| 232 | .first::<Bytes>(None) |
| 233 | .await? |
| 234 | .and_then(|row| row.stored_bytes) |
| 235 | .unwrap_or(0.0) as i64) |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | impl<S: GitStore> Repos<S> { |
| 240 | /// `transfer`: see `g1t_contracts::repos::TransferArgs`. |
| 241 | pub(crate) async fn transfer(&self, a: TransferArgs) -> Result<Outcome<Repo>> { |
| 242 | let viewer = Some(a.actor.clone()); |
| 243 | let Some(repo) = self.readable(&a.path, &viewer).await? else { |
| 244 | return Ok(not_found()); |
| 245 | }; |
| 246 | if repo.fork_of.is_some() { |
| 247 | return Ok(not_found()); |
| 248 | } |
| 249 | let destination = a.to.trim().to_lowercase(); |
| 250 | let source = repo.namespace.clone(); |
| 251 | // A repository deleted there but not yet purged holds the name too. |
| 252 | let taken = !destination.is_empty() |
| 253 | && self |
| 254 | .registry |
| 255 | .by_path_any(&RepoPath { |
| 256 | namespace: destination.clone(), |
| 257 | name: repo.name.clone(), |
| 258 | }) |
| 259 | .await? |
| 260 | .is_some(); |
| 261 | let private_checks = repo.is_private && !destination.is_empty() && destination != source; |
| 262 | let (bytes, held, free) = if private_checks { |
| 263 | let free = git_ops::is_free(self.billing.as_ref(), &destination).await; |
| 264 | ( |
| 265 | self.registry.stored_bytes(&repo.id).await?, |
| 266 | self.registry.private_bytes(&destination).await.unwrap_or(0), |
| 267 | free, |
| 268 | ) |
| 269 | } else { |
| 270 | (0, 0, false) |
| 271 | }; |
| 272 | let viewer = Some(a.actor.clone()); |
| 273 | let admin_may_transfer = crate::registry::role(&repo, &viewer) == Some(g1t_contracts::access::RepoRole::Admin) |
| 274 | && a.actor.privileges_in(&source).members_can_delete_repositories; |
| 275 | let may_create_in_destination = a |
| 276 | .actor |
| 277 | .role_in(&destination) |
| 278 | .is_some_and(|role| a.actor.privileges_in(&destination).may_create(role, repo.is_private)); |
| 279 | let facts = Facts { |
| 280 | person: a.actor.kind == PrincipalKind::User, |
| 281 | verified: a.actor.verified, |
| 282 | role_in_source: a.actor.role_in(&source), |
| 283 | role_in_destination: a.actor.role_in(&destination), |
| 284 | admin_may_transfer, |
| 285 | may_create_in_destination, |
| 286 | source: source.clone(), |
| 287 | destination: destination.clone(), |
| 288 | name: repo.name.clone(), |
| 289 | name_taken: taken, |
| 290 | is_private: repo.is_private, |
| 291 | bytes, |
| 292 | destination_free: free, |
| 293 | destination_private_bytes: held, |
| 294 | free_private_bytes: self.free_private_bytes, |
| 295 | }; |
| 296 | if let Err((code, message)) = check(&facts) { |
| 297 | return Ok(Outcome::fail(code, message)); |
| 298 | } |
| 299 | |
| 300 | if !self.registry.transfer(&repo, &destination, self.free_public_bytes).await? { |
| 301 | return Ok(Outcome::fail(FailureCode::Forbidden, "This transfer would exceed the destination workspace's public storage limit.")); |
| 302 | } |
| 303 | let moved = Repo { |
| 304 | namespace: destination.clone(), |
| 305 | ..repo.clone() |
| 306 | }; |
| 307 | let from = RepoPath { |
| 308 | namespace: source.clone(), |
| 309 | name: repo.name.clone(), |
| 310 | }; |
| 311 | let to = RepoPath { |
| 312 | namespace: destination.clone(), |
| 313 | name: repo.name.clone(), |
| 314 | }; |
| 315 | // Agents at work on it keep their scope, which names it by path. |
| 316 | if let Some(identity) = &self.identity { |
| 317 | let moved_scopes: Result<bool> = g1t_kit::call( |
| 318 | identity, |
| 319 | "transfer_repo_scopes", |
| 320 | &TransferRepoScopesArgs { |
| 321 | from: from.clone(), |
| 322 | to: to.clone(), |
| 323 | }, |
| 324 | ) |
| 325 | .await; |
| 326 | if let Err(error) = moved_scopes { |
| 327 | worker::console_error!("agent scopes for {} not moved: {error}", repo.id); |
| 328 | } |
| 329 | } |
| 330 | self.publish(NewEvent { |
| 331 | kind: "repo.transferred", |
| 332 | source: SOURCE, |
| 333 | repo_id: Some(repo.id.clone()), |
| 334 | actor: Some(a.actor.id.clone()), |
| 335 | data: RepoTransferred { |
| 336 | repo_id: repo.id.clone(), |
| 337 | name: repo.name.clone(), |
| 338 | from: source.clone(), |
| 339 | to: destination.clone(), |
| 340 | }, |
| 341 | }) |
| 342 | .await?; |
| 343 | self.record_transfer(&a, &from, &to).await; |
| 344 | Ok(Outcome::Ok(moved)) |
| 345 | } |
| 346 | |
| 347 | /// One entry in each workspace's audit log: the one it left and the |
| 348 | /// one it joined. |
| 349 | async fn record_transfer(&self, a: &TransferArgs, from: &RepoPath, to: &RepoPath) { |
| 350 | let request_id = new_id("req", now_ms()); |
| 351 | let entry = |workspace: &str, repo: &RepoPath, message: String| NewAuditEntry { |
| 352 | actor: AuditActor::of(&a.actor), |
| 353 | action: "repo.transferred".to_owned(), |
| 354 | surface: a.surface.unwrap_or(Surface::Web), |
| 355 | target: AuditTarget { |
| 356 | workspace: workspace.to_owned(), |
| 357 | repo: Some(format!("{}/{}", repo.namespace, repo.name)), |
| 358 | ..AuditTarget::default() |
| 359 | }, |
| 360 | outcome: AuditOutcome::Allowed, |
| 361 | rule: "owner".to_owned(), |
| 362 | result: Some("ok".to_owned()), |
| 363 | message: Some(message), |
| 364 | request_id: request_id.clone(), |
| 365 | }; |
| 366 | let entries = vec![ |
| 367 | entry( |
| 368 | &from.namespace, |
| 369 | from, |
| 370 | format!("Transferred to {}/{}", to.namespace, to.name), |
| 371 | ), |
| 372 | entry( |
| 373 | &to.namespace, |
| 374 | to, |
| 375 | format!("Transferred from {}/{}", from.namespace, from.name), |
| 376 | ), |
| 377 | ]; |
| 378 | let recorded: Result<u32> = |
| 379 | g1t_kit::call(&self.events, "audit_record", &RecordAuditArgs { entries }).await; |
| 380 | if let Err(error) = recorded { |
| 381 | worker::console_error!("transfer audit entries not recorded: {error}"); |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | #[cfg(test)] |
| 387 | mod tests { |
| 388 | use super::*; |
| 389 | |
| 390 | fn facts() -> Facts { |
| 391 | Facts { |
| 392 | person: true, |
| 393 | verified: true, |
| 394 | role_in_source: Some(Role::Owner), |
| 395 | role_in_destination: Some(Role::Owner), |
| 396 | source: "syntaqx".into(), |
| 397 | destination: "flagon-io".into(), |
| 398 | name: "g1t".into(), |
| 399 | free_private_bytes: 1_000_000_000, |
| 400 | ..Facts::default() |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | fn refused(facts: &Facts) -> FailureCode { |
| 405 | check(facts).unwrap_err().0 |
| 406 | } |
| 407 | |
| 408 | #[test] |
| 409 | fn an_owner_of_both_may_transfer() { |
| 410 | assert!(check(&facts()).is_ok()); |
| 411 | } |
| 412 | |
| 413 | #[test] |
| 414 | fn member_privileges_let_an_admin_transfer_where_they_may_create() { |
| 415 | let member = Facts { role_in_source: Some(Role::Member), role_in_destination: Some(Role::Member), ..facts() }; |
| 416 | assert_eq!(refused(&member), FailureCode::Forbidden); |
| 417 | let allowed = Facts { admin_may_transfer: true, may_create_in_destination: true, ..member }; |
| 418 | assert!(check(&allowed).is_ok()); |
| 419 | assert_eq!( |
| 420 | refused(&Facts { may_create_in_destination: false, admin_may_transfer: true, role_in_source: Some(Role::Member), role_in_destination: Some(Role::Member), ..facts() }), |
| 421 | FailureCode::Forbidden |
| 422 | ); |
| 423 | } |
| 424 | |
| 425 | #[test] |
| 426 | fn needs_a_verified_person_who_owns_both() { |
| 427 | assert_eq!(refused(&Facts { person: false, ..facts() }), FailureCode::Forbidden); |
| 428 | assert_eq!(refused(&Facts { verified: false, ..facts() }), FailureCode::Forbidden); |
| 429 | assert_eq!( |
| 430 | refused(&Facts { role_in_source: Some(Role::Member), ..facts() }), |
| 431 | FailureCode::Forbidden |
| 432 | ); |
| 433 | assert_eq!( |
| 434 | refused(&Facts { role_in_destination: Some(Role::Member), ..facts() }), |
| 435 | FailureCode::Forbidden |
| 436 | ); |
| 437 | assert_eq!(refused(&Facts { role_in_destination: None, ..facts() }), FailureCode::Forbidden); |
| 438 | } |
| 439 | |
| 440 | #[test] |
| 441 | fn needs_somewhere_else_with_the_name_free() { |
| 442 | assert_eq!(refused(&Facts { destination: String::new(), ..facts() }), FailureCode::Invalid); |
| 443 | assert_eq!( |
| 444 | refused(&Facts { destination: "syntaqx".into(), role_in_destination: Some(Role::Owner), ..facts() }), |
| 445 | FailureCode::Invalid |
| 446 | ); |
| 447 | let (code, message) = check(&Facts { name_taken: true, ..facts() }).unwrap_err(); |
| 448 | assert_eq!(code, FailureCode::Conflict); |
| 449 | assert!(message.contains("flagon-io already has a repository named g1t")); |
| 450 | } |
| 451 | |
| 452 | #[test] |
| 453 | fn a_free_destination_takes_private_repositories_within_its_storage() { |
| 454 | let heavy = Facts { |
| 455 | is_private: true, |
| 456 | destination_free: true, |
| 457 | destination_private_bytes: 900_000_000, |
| 458 | bytes: 200_000_000, |
| 459 | ..facts() |
| 460 | }; |
| 461 | assert_eq!(refused(&heavy), FailureCode::PaymentRequired); |
| 462 | // Public, or a destination on the plan: no cap. |
| 463 | assert!(check(&Facts { is_private: false, ..heavy }).is_ok()); |
| 464 | let heavy = Facts { |
| 465 | is_private: true, |
| 466 | destination_free: true, |
| 467 | destination_private_bytes: 900_000_000, |
| 468 | bytes: 200_000_000, |
| 469 | ..facts() |
| 470 | }; |
| 471 | assert!(check(&Facts { destination_free: false, ..heavy }).is_ok()); |
| 472 | let light = Facts { |
| 473 | is_private: true, |
| 474 | destination_free: true, |
| 475 | bytes: 10_000, |
| 476 | ..facts() |
| 477 | }; |
| 478 | assert!(check(&light).is_ok()); |
| 479 | } |
| 480 | } |