| 1 | /** |
| 2 | * The deployments service: every pull request gets a live preview on |
| 3 | * g1t.page, and the default branch goes to production on every push. |
| 4 | * |
| 5 | * It reacts to events (a pull request opened, ready, pushed to, closed or |
| 6 | * merged; a push to the default branch), asks billing whether the |
| 7 | * workspace pays for Deployments, and asks the runner to build the commit |
| 8 | * in a sandbox. The sandbox reports back through the API with a token for |
| 9 | * that build alone; this service opens the upload of its files and puts |
| 10 | * the finished app in the Workers for Platforms namespace, where the |
| 11 | * `*.g1t.page` dispatcher finds it by hostname. |
| 12 | * |
| 13 | * Nothing here is free. A build is charged by the second; requests, CPU |
| 14 | * time and apps past the plan's allowance are charged once the month is |
| 15 | * over. A Worker runs only while it answers a request, so an app no one |
| 16 | * visits costs nothing, and a preview is taken down when its pull request |
| 17 | * closes or after its repository's idle days. |
| 18 | * |
| 19 | * Reached through service bindings (`POST /rpc/<method>`) and, for a |
| 20 | * build's reports, through the API (`POST /jobs/<id>/<step>`). |
| 21 | */ |
| 22 | |
| 23 | import { |
| 24 | DEPLOYMENTS_ALLOWANCE, |
| 25 | billingClient, |
| 26 | fail, |
| 27 | identityClient, |
| 28 | newId, |
| 29 | ok, |
| 30 | reposClient, |
| 31 | workClient, |
| 32 | type DeployKind, |
| 33 | type DeploySettings, |
| 34 | type DeployStatus, |
| 35 | type DeployUsage, |
| 36 | type Deployment, |
| 37 | type G1tEvent, |
| 38 | type LiveApp, |
| 39 | type RepoPath, |
| 40 | type Result, |
| 41 | type ServiceBinding, |
| 42 | type User, |
| 43 | type Viewer, |
| 44 | } from "@g1t/contracts"; |
| 45 | |
| 46 | import { Cloudflare, type BuiltWorker, type Manifest } from "./cloudflare"; |
| 47 | import { appUrl, scriptName } from "./names"; |
| 48 | |
| 49 | type Env = { |
| 50 | DB: D1Database; |
| 51 | REPOS: ServiceBinding; |
| 52 | WORK: ServiceBinding; |
| 53 | IDENTITY: ServiceBinding; |
| 54 | BILLING: ServiceBinding; |
| 55 | RUNNER: ServiceBinding; |
| 56 | /** Secret: scoped to Workers scripts and analytics on g1t's account. */ |
| 57 | CLOUDFLARE_API_TOKEN?: string; |
| 58 | CLOUDFLARE_ACCOUNT_ID: string; |
| 59 | DISPATCH_NAMESPACE: string; |
| 60 | SITE: string; |
| 61 | }; |
| 62 | |
| 63 | /** A build that has not reported in this long has died. */ |
| 64 | const BUILD_TIMEOUT_MS = 45 * 60 * 1000; |
| 65 | const LIST_LIMIT = 50; |
| 66 | const MAX_ENV_VARS = 50; |
| 67 | const STATUS_CONTEXT = "g1t / deploy"; |
| 68 | |
| 69 | const now = () => new Date().toISOString(); |
| 70 | const month = (at = new Date()) => at.toISOString().slice(0, 7); |
| 71 | |
| 72 | async function sha256(text: string): Promise<string> { |
| 73 | const digest = await crypto.subtle.digest("SHA-256", new TextEncoder().encode(text)); |
| 74 | return [...new Uint8Array(digest)].map((b) => b.toString(16).padStart(2, "0")).join(""); |
| 75 | } |
| 76 | |
| 77 | function randomToken(): string { |
| 78 | return [...crypto.getRandomValues(new Uint8Array(32))].map((b) => b.toString(16).padStart(2, "0")).join(""); |
| 79 | } |
| 80 | |
| 81 | function isMember(viewer: Viewer, slug: string): boolean { |
| 82 | return !!viewer?.workspaces?.some((membership) => membership.slug === slug.toLowerCase()); |
| 83 | } |
| 84 | |
| 85 | type SettingsRow = { |
| 86 | repo_id: string; |
| 87 | namespace: string; |
| 88 | name: string; |
| 89 | enabled: number; |
| 90 | previews: number; |
| 91 | production: number; |
| 92 | build_command: string | null; |
| 93 | output_dir: string | null; |
| 94 | build_env: string; |
| 95 | idle_days: number; |
| 96 | }; |
| 97 | |
| 98 | type DeploymentRow = { |
| 99 | id: string; |
| 100 | repo_id: string; |
| 101 | namespace: string; |
| 102 | name: string; |
| 103 | kind: DeployKind; |
| 104 | number: number | null; |
| 105 | commit_sha: string; |
| 106 | script: string; |
| 107 | status: DeployStatus; |
| 108 | error: string | null; |
| 109 | warnings: string; |
| 110 | log: string | null; |
| 111 | token_hash: string | null; |
| 112 | build_seconds: number | null; |
| 113 | created_by: string; |
| 114 | created_at: string; |
| 115 | finished_at: string | null; |
| 116 | }; |
| 117 | |
| 118 | type AppRow = { |
| 119 | script: string; |
| 120 | repo_id: string; |
| 121 | namespace: string; |
| 122 | name: string; |
| 123 | kind: DeployKind; |
| 124 | number: number | null; |
| 125 | commit_sha: string; |
| 126 | deployed_at: string; |
| 127 | created_at: string; |
| 128 | last_request_at: string | null; |
| 129 | }; |
| 130 | |
| 131 | function toDeployment(row: DeploymentRow): Deployment { |
| 132 | return { |
| 133 | id: row.id, |
| 134 | kind: row.kind, |
| 135 | number: row.number, |
| 136 | commit: row.commit_sha, |
| 137 | status: row.status, |
| 138 | url: appUrl(row.script), |
| 139 | error: row.error, |
| 140 | warnings: JSON.parse(row.warnings || "[]") as string[], |
| 141 | buildSeconds: row.build_seconds, |
| 142 | createdBy: row.created_by, |
| 143 | createdAt: row.created_at, |
| 144 | finishedAt: row.finished_at, |
| 145 | }; |
| 146 | } |
| 147 | |
| 148 | class Deployments { |
| 149 | constructor(private readonly env: Env) {} |
| 150 | |
| 151 | private get cloudflare(): Cloudflare | null { |
| 152 | const token = this.env.CLOUDFLARE_API_TOKEN; |
| 153 | return token ? new Cloudflare(token, this.env.CLOUDFLARE_ACCOUNT_ID, this.env.DISPATCH_NAMESPACE) : null; |
| 154 | } |
| 155 | |
| 156 | private get db() { |
| 157 | return this.env.DB; |
| 158 | } |
| 159 | |
| 160 | /** The workspace itself, as the service acts for it. */ |
| 161 | private async workspaceActor(slug: string): Promise<User | null> { |
| 162 | const workspace = await identityClient(this.env.IDENTITY).getWorkspace(slug); |
| 163 | if (!workspace) return null; |
| 164 | return { |
| 165 | id: workspace.id, |
| 166 | username: workspace.slug, |
| 167 | kind: "workspace", |
| 168 | verified: true, |
| 169 | workspaces: [{ slug: workspace.slug, role: "member" }], |
| 170 | }; |
| 171 | } |
| 172 | |
| 173 | private async pathById(id: string): Promise<RepoPath | null> { |
| 174 | const response = await this.env.REPOS.fetch("https://repos/rpc/path_by_id", { |
| 175 | method: "POST", |
| 176 | headers: { "content-type": "application/json" }, |
| 177 | body: JSON.stringify({ id }), |
| 178 | }); |
| 179 | return response.ok ? ((await response.json()) as RepoPath | null) : null; |
| 180 | } |
| 181 | |
| 182 | private async settingsRow(repoId: string): Promise<SettingsRow | null> { |
| 183 | return this.db.prepare("SELECT * FROM settings WHERE repo_id = ?").bind(repoId).first<SettingsRow>(); |
| 184 | } |
| 185 | |
| 186 | private async toSettings(repo: RepoPath, row: SettingsRow | null): Promise<DeploySettings> { |
| 187 | return { |
| 188 | enabled: !!row?.enabled, |
| 189 | previews: row ? !!row.previews : true, |
| 190 | production: row ? !!row.production : true, |
| 191 | buildCommand: row?.build_command ?? null, |
| 192 | outputDir: row?.output_dir ?? null, |
| 193 | buildEnv: JSON.parse(row?.build_env ?? "{}") as Record<string, string>, |
| 194 | idleDays: row?.idle_days ?? 7, |
| 195 | productionUrl: appUrl(await scriptName(repo, null)), |
| 196 | }; |
| 197 | } |
| 198 | |
| 199 | /** The repository, if `viewer` belongs to its workspace and it is not a fork. */ |
| 200 | private async memberRepo(repo: RepoPath, viewer: Viewer) { |
| 201 | if (!isMember(viewer, repo.namespace)) return fail("forbidden", "Only members of the workspace can manage its deployments."); |
| 202 | const found = await reposClient(this.env.REPOS).get(repo, viewer); |
| 203 | if (!found.ok) return found; |
| 204 | if (found.value.forkOf) return fail("invalid", "A pull request's working copy does not deploy on its own."); |
| 205 | return found; |
| 206 | } |
| 207 | |
| 208 | // ---- Methods for the site and the API ------------------------------ |
| 209 | |
| 210 | async settings(a: { repo: RepoPath; viewer: Viewer }): Promise<Result<DeploySettings>> { |
| 211 | const repo = await this.memberRepo(a.repo, a.viewer); |
| 212 | if (!repo.ok) return repo; |
| 213 | return ok(await this.toSettings(a.repo, await this.settingsRow(repo.value.id))); |
| 214 | } |
| 215 | |
| 216 | async updateSettings(a: { |
| 217 | actor: User; |
| 218 | repo: RepoPath; |
| 219 | changes: Partial<DeploySettings>; |
| 220 | }): Promise<Result<DeploySettings>> { |
| 221 | const repo = await this.memberRepo(a.repo, a.actor); |
| 222 | if (!repo.ok) return repo; |
| 223 | const before = await this.toSettings(a.repo, await this.settingsRow(repo.value.id)); |
| 224 | const next = { ...before, ...a.changes }; |
| 225 | if (next.enabled && !before.enabled) { |
| 226 | // Turning it on starts paid work: only with the workspace's plan. |
| 227 | const plan = await billingClient(this.env.BILLING).hasFeature(a.repo.namespace, "deployments"); |
| 228 | if (!plan.ok) return plan; |
| 229 | } |
| 230 | const env = Object.entries(next.buildEnv ?? {}); |
| 231 | if (env.length > MAX_ENV_VARS) return fail("invalid", `At most ${MAX_ENV_VARS} build variables.`); |
| 232 | if (env.some(([name]) => !/^[A-Za-z_][A-Za-z0-9_]*$/.test(name))) { |
| 233 | return fail("invalid", "A variable's name is letters, digits and underscores, not starting with a digit."); |
| 234 | } |
| 235 | const idleDays = Math.min(90, Math.max(1, Math.trunc(Number(next.idleDays) || 7))); |
| 236 | const clip = (text: string | null | undefined) => (text?.trim() ? text.trim().slice(0, 500) : null); |
| 237 | await this.db |
| 238 | .prepare( |
| 239 | `INSERT INTO settings (repo_id, namespace, name, enabled, previews, production, build_command, output_dir, |
| 240 | build_env, idle_days, updated_by, updated_at) |
| 241 | VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12) |
| 242 | ON CONFLICT (repo_id) DO UPDATE SET namespace = ?2, name = ?3, enabled = ?4, previews = ?5, production = ?6, |
| 243 | build_command = ?7, output_dir = ?8, build_env = ?9, idle_days = ?10, updated_by = ?11, updated_at = ?12`, |
| 244 | ) |
| 245 | .bind( |
| 246 | repo.value.id, |
| 247 | repo.value.namespace, |
| 248 | repo.value.name, |
| 249 | next.enabled ? 1 : 0, |
| 250 | next.previews ? 1 : 0, |
| 251 | next.production ? 1 : 0, |
| 252 | clip(next.buildCommand), |
| 253 | clip(next.outputDir), |
| 254 | JSON.stringify(Object.fromEntries(env.map(([k, v]) => [k, String(v).slice(0, 2000)]))), |
| 255 | idleDays, |
| 256 | a.actor.username, |
| 257 | now(), |
| 258 | ) |
| 259 | .run(); |
| 260 | // What was turned off comes down now; nothing keeps running unasked. |
| 261 | if (!next.enabled) await this.takeDownWhere(repo.value.id, null); |
| 262 | else { |
| 263 | if (!next.previews) await this.takeDownWhere(repo.value.id, "preview"); |
| 264 | if (!next.production) await this.takeDownWhere(repo.value.id, "production"); |
| 265 | } |
| 266 | // Turned on: production goes up from the default branch at once. |
| 267 | if (next.enabled && next.production && (!before.enabled || !before.production)) { |
| 268 | await this.deployProduction(repo.value.id, a.repo, repo.value.defaultBranch, null, a.actor.username); |
| 269 | } |
| 270 | return ok(await this.toSettings(a.repo, await this.settingsRow(repo.value.id))); |
| 271 | } |
| 272 | |
| 273 | async list(a: { repo: RepoPath; viewer: Viewer }): Promise<Result<{ deployments: Deployment[]; live: LiveApp[] }>> { |
| 274 | const repo = await this.memberRepo(a.repo, a.viewer); |
| 275 | if (!repo.ok) return repo; |
| 276 | const [deployments, apps] = await Promise.all([ |
| 277 | this.db |
| 278 | .prepare("SELECT * FROM deployments WHERE repo_id = ? ORDER BY id DESC LIMIT ?") |
| 279 | .bind(repo.value.id, LIST_LIMIT) |
| 280 | .all<DeploymentRow>(), |
| 281 | this.db |
| 282 | .prepare("SELECT * FROM apps WHERE repo_id = ? ORDER BY kind DESC, number DESC") |
| 283 | .bind(repo.value.id) |
| 284 | .all<AppRow>(), |
| 285 | ]); |
| 286 | return ok({ |
| 287 | deployments: deployments.results.map(toDeployment), |
| 288 | live: apps.results.map((app) => ({ |
| 289 | kind: app.kind, |
| 290 | number: app.number, |
| 291 | url: appUrl(app.script), |
| 292 | commit: app.commit_sha, |
| 293 | deployedAt: app.deployed_at, |
| 294 | })), |
| 295 | }); |
| 296 | } |
| 297 | |
| 298 | async get(a: { repo: RepoPath; id: string; viewer: Viewer }): Promise<Result<Deployment & { log: string | null }>> { |
| 299 | const repo = await this.memberRepo(a.repo, a.viewer); |
| 300 | if (!repo.ok) return repo; |
| 301 | const row = await this.db |
| 302 | .prepare("SELECT * FROM deployments WHERE id = ? AND repo_id = ?") |
| 303 | .bind(a.id, repo.value.id) |
| 304 | .first<DeploymentRow>(); |
| 305 | if (!row) return fail("not_found", "No such deployment."); |
| 306 | return ok({ ...toDeployment(row), log: row.log }); |
| 307 | } |
| 308 | |
| 309 | async redeploy(a: { actor: User; repo: RepoPath; number: number | null }): Promise<Result<Deployment>> { |
| 310 | const repo = await this.memberRepo(a.repo, a.actor); |
| 311 | if (!repo.ok) return repo; |
| 312 | const settings = await this.settingsRow(repo.value.id); |
| 313 | if (!settings?.enabled) return fail("conflict", "Deployments are off for this repository."); |
| 314 | const started = |
| 315 | a.number == null |
| 316 | ? await this.deployProduction(repo.value.id, a.repo, repo.value.defaultBranch, null, a.actor.username) |
| 317 | : await this.deployPreview(repo.value.id, a.repo, a.number, a.actor.username, true); |
| 318 | return started ?? fail("conflict", "There was nothing to deploy."); |
| 319 | } |
| 320 | |
| 321 | async takeDown(a: { actor: User; repo: RepoPath; number: number | null }): Promise<Result<true>> { |
| 322 | const repo = await this.memberRepo(a.repo, a.actor); |
| 323 | if (!repo.ok) return repo; |
| 324 | const script = await scriptName(a.repo, a.number); |
| 325 | await this.removeApp(script); |
| 326 | return ok(true); |
| 327 | } |
| 328 | |
| 329 | async usage(a: { workspace: string; viewer: Viewer }): Promise<Result<DeployUsage>> { |
| 330 | const slug = a.workspace.toLowerCase(); |
| 331 | if (!isMember(a.viewer, slug)) return fail("forbidden", "Only members can see a workspace's usage."); |
| 332 | const [meter, apps] = await Promise.all([ |
| 333 | this.db |
| 334 | .prepare("SELECT * FROM meters WHERE namespace = ? AND month = ?") |
| 335 | .bind(slug, month()) |
| 336 | .first<{ |
| 337 | requests: number; |
| 338 | cpu_ms: number; |
| 339 | peak_apps: number; |
| 340 | build_seconds: number; |
| 341 | build_micros: number; |
| 342 | counted_at: string | null; |
| 343 | }>(), |
| 344 | this.db.prepare("SELECT COUNT(*) AS n FROM apps WHERE namespace = ?").bind(slug).first<{ n: number }>(), |
| 345 | ]); |
| 346 | return ok({ |
| 347 | month: month(), |
| 348 | requests: meter?.requests ?? 0, |
| 349 | cpuMs: meter?.cpu_ms ?? 0, |
| 350 | apps: apps?.n ?? 0, |
| 351 | peakApps: Math.max(meter?.peak_apps ?? 0, apps?.n ?? 0), |
| 352 | buildSeconds: meter?.build_seconds ?? 0, |
| 353 | buildMicros: meter?.build_micros ?? 0, |
| 354 | countedAt: meter?.counted_at ?? null, |
| 355 | }); |
| 356 | } |
| 357 | |
| 358 | // ---- Starting builds ----------------------------------------------- |
| 359 | |
| 360 | /** |
| 361 | * Opens a deployment and starts its build. Skipped, with the reason |
| 362 | * recorded, when the workspace's plan is off. |
| 363 | */ |
| 364 | private async start(input: { |
| 365 | repoId: string; |
| 366 | repo: RepoPath; |
| 367 | kind: DeployKind; |
| 368 | number: number | null; |
| 369 | commit: string; |
| 370 | source: RepoPath; |
| 371 | reader: User; |
| 372 | createdBy: string; |
| 373 | settings: SettingsRow; |
| 374 | }): Promise<Result<Deployment>> { |
| 375 | const script = await scriptName(input.repo, input.number); |
| 376 | const id = newId("dpl"); |
| 377 | const token = randomToken(); |
| 378 | const plan = await billingClient(this.env.BILLING).hasFeature(input.repo.namespace, "deployments"); |
| 379 | const cloudflare = this.cloudflare; |
| 380 | const refused = !plan.ok |
| 381 | ? plan.error.message |
| 382 | : !cloudflare |
| 383 | ? "Deployments are not set up on this g1t: it has no Cloudflare token." |
| 384 | : null; |
| 385 | await this.db |
| 386 | .prepare( |
| 387 | `INSERT INTO deployments (id, repo_id, namespace, name, kind, number, commit_sha, script, status, error, |
| 388 | token_hash, created_by, created_at, finished_at) |
| 389 | VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`, |
| 390 | ) |
| 391 | .bind( |
| 392 | id, |
| 393 | input.repoId, |
| 394 | input.repo.namespace, |
| 395 | input.repo.name, |
| 396 | input.kind, |
| 397 | input.number, |
| 398 | input.commit, |
| 399 | script, |
| 400 | refused ? "skipped" : "queued", |
| 401 | refused, |
| 402 | refused ? null : await sha256(token), |
| 403 | input.createdBy, |
| 404 | now(), |
| 405 | refused ? now() : null, |
| 406 | ) |
| 407 | .run(); |
| 408 | if (refused) return ok(toDeployment((await this.deploymentRow(id))!)); |
| 409 | // Older builds of the same app are replaced by this one. |
| 410 | await this.db |
| 411 | .prepare( |
| 412 | `UPDATE deployments SET status = 'skipped', error = 'A newer commit replaced this build.', finished_at = ? |
| 413 | WHERE script = ? AND id != ? AND status IN ('queued', 'building')`, |
| 414 | ) |
| 415 | .bind(now(), script, id) |
| 416 | .run(); |
| 417 | await this.status(input.repoId, input.commit, "pending", "Building", `${this.env.SITE}/${input.repo.namespace}/${input.repo.name}/deployments/${id}`); |
| 418 | const env = JSON.parse(input.settings.build_env || "{}") as Record<string, string>; |
| 419 | const response = await this.env.RUNNER.fetch("https://runner/rpc/start_deploy", { |
| 420 | method: "POST", |
| 421 | headers: { "content-type": "application/json" }, |
| 422 | body: JSON.stringify({ |
| 423 | deployId: id, |
| 424 | token, |
| 425 | actor: input.reader, |
| 426 | source: input.source, |
| 427 | commit: input.commit, |
| 428 | buildCommand: input.settings.build_command, |
| 429 | outputDir: input.settings.output_dir, |
| 430 | buildEnv: env, |
| 431 | }), |
| 432 | }); |
| 433 | const started = response.ok ? ((await response.json()) as Result<true>) : fail("conflict", `The runner answered ${response.status}.`); |
| 434 | if (!started.ok) await this.finishFailed(id, started.error.message, null, null); |
| 435 | return ok(toDeployment((await this.deploymentRow(id))!)); |
| 436 | } |
| 437 | |
| 438 | private async deployProduction( |
| 439 | repoId: string, |
| 440 | repo: RepoPath, |
| 441 | branch: string, |
| 442 | commit: string | null, |
| 443 | createdBy: string, |
| 444 | ): Promise<Result<Deployment> | null> { |
| 445 | const settings = await this.settingsRow(repoId); |
| 446 | if (!settings?.enabled || !settings.production) return null; |
| 447 | const actor = await this.workspaceActor(repo.namespace); |
| 448 | if (!actor) return null; |
| 449 | let head = commit; |
| 450 | if (!head) { |
| 451 | const branches = await reposClient(this.env.REPOS).branches(repo, actor); |
| 452 | head = branches.ok ? (branches.value.find((b) => b.name === branch)?.hash ?? null) : null; |
| 453 | } |
| 454 | if (!head) return null; |
| 455 | return this.start({ |
| 456 | repoId, |
| 457 | repo, |
| 458 | kind: "production", |
| 459 | number: null, |
| 460 | commit: head, |
| 461 | source: repo, |
| 462 | reader: actor, |
| 463 | createdBy, |
| 464 | settings, |
| 465 | }); |
| 466 | } |
| 467 | |
| 468 | private async deployPreview( |
| 469 | repoId: string, |
| 470 | repo: RepoPath, |
| 471 | number: number, |
| 472 | createdBy: string, |
| 473 | force = false, |
| 474 | ): Promise<Result<Deployment> | null> { |
| 475 | const settings = await this.settingsRow(repoId); |
| 476 | if (!settings?.enabled || !settings.previews) return null; |
| 477 | const actor = await this.workspaceActor(repo.namespace); |
| 478 | if (!actor) return null; |
| 479 | const detail = await workClient(this.env.WORK).getPull(repo, number, actor); |
| 480 | if (!detail.ok) return null; |
| 481 | const { pull } = detail.value; |
| 482 | if ((pull.status !== "open" && pull.status !== "draft") || !pull.headCommit) return null; |
| 483 | if (!force) { |
| 484 | // Already built, or being built, at this commit. |
| 485 | const same = await this.db |
| 486 | .prepare( |
| 487 | `SELECT id FROM deployments WHERE repo_id = ? AND kind = 'preview' AND number = ? AND commit_sha = ? |
| 488 | AND status IN ('queued', 'building', 'ready')`, |
| 489 | ) |
| 490 | .bind(repoId, number, pull.headCommit) |
| 491 | .first(); |
| 492 | if (same) return null; |
| 493 | } |
| 494 | return this.start({ |
| 495 | repoId, |
| 496 | repo, |
| 497 | kind: "preview", |
| 498 | number, |
| 499 | commit: pull.headCommit, |
| 500 | source: pull.fork ?? repo, |
| 501 | // The pull request's fork may be private: read it as its author. |
| 502 | reader: pull.author, |
| 503 | createdBy, |
| 504 | settings, |
| 505 | }); |
| 506 | } |
| 507 | |
| 508 | // ---- A build's reports --------------------------------------------- |
| 509 | |
| 510 | private async deploymentRow(id: string): Promise<DeploymentRow | null> { |
| 511 | return this.db.prepare("SELECT * FROM deployments WHERE id = ?").bind(id).first<DeploymentRow>(); |
| 512 | } |
| 513 | |
| 514 | /** The build, if `token` is its own and it is still under way. */ |
| 515 | private async building(id: string, token: unknown): Promise<DeploymentRow | null> { |
| 516 | const row = await this.deploymentRow(id); |
| 517 | if (!row?.token_hash || typeof token !== "string") return null; |
| 518 | if (row.token_hash !== (await sha256(token))) return null; |
| 519 | return row.status === "queued" || row.status === "building" ? row : null; |
| 520 | } |
| 521 | |
| 522 | async job(id: string, step: string, body: Record<string, unknown>): Promise<Response> { |
| 523 | const row = await this.building(id, body.token); |
| 524 | if (!row) return Response.json(fail("not_found", "No such build, or it has finished."), { status: 404 }); |
| 525 | const cloudflare = this.cloudflare; |
| 526 | if (!cloudflare) return Response.json(fail("conflict", "Deployments are not set up."), { status: 409 }); |
| 527 | switch (step) { |
| 528 | case "started": |
| 529 | await this.db |
| 530 | .prepare("UPDATE deployments SET status = 'building', started_at = ? WHERE id = ?") |
| 531 | .bind(now(), id) |
| 532 | .run(); |
| 533 | return Response.json(ok(true)); |
| 534 | case "session": { |
| 535 | const manifest = body.manifest as Manifest | undefined; |
| 536 | if (!manifest || typeof manifest !== "object") return Response.json(fail("invalid", "No manifest."), { status: 400 }); |
| 537 | const session = await cloudflare.openUpload(row.script, manifest); |
| 538 | return Response.json(ok({ ...session, uploadUrl: cloudflare.uploadUrl })); |
| 539 | } |
| 540 | case "finish": { |
| 541 | const worker = (body.worker ?? {}) as BuiltWorker; |
| 542 | const seconds = Number(body.buildSeconds) || 0; |
| 543 | try { |
| 544 | await cloudflare.putScript( |
| 545 | row.script, |
| 546 | worker, |
| 547 | typeof body.completionJwt === "string" ? body.completionJwt : null, |
| 548 | [`workspace:${row.namespace}`, `repo:${row.namespace}/${row.name}`, row.kind], |
| 549 | ); |
| 550 | } catch (error) { |
| 551 | await this.finishFailed(id, `Cloudflare did not take the app: ${String(error).replace(/^Error: /, "")}`, String(body.log ?? ""), seconds); |
| 552 | return Response.json(ok(false)); |
| 553 | } |
| 554 | const at = now(); |
| 555 | await this.db.batch([ |
| 556 | this.db |
| 557 | .prepare( |
| 558 | `UPDATE deployments SET status = 'ready', warnings = ?, log = ?, build_seconds = ?, finished_at = ? |
| 559 | WHERE id = ?`, |
| 560 | ) |
| 561 | .bind(JSON.stringify(Array.isArray(body.warnings) ? body.warnings : []), String(body.log ?? ""), seconds, at, id), |
| 562 | this.db |
| 563 | .prepare( |
| 564 | `INSERT INTO apps (script, repo_id, namespace, name, kind, number, commit_sha, deployed_at, created_at) |
| 565 | VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?8) |
| 566 | ON CONFLICT (script) DO UPDATE SET commit_sha = ?7, deployed_at = ?8`, |
| 567 | ) |
| 568 | .bind(row.script, row.repo_id, row.namespace, row.name, row.kind, row.number, row.commit_sha, at), |
| 569 | ]); |
| 570 | await this.chargeBuild(row, seconds); |
| 571 | await this.notePeak(row.namespace); |
| 572 | await this.status( |
| 573 | row.repo_id, |
| 574 | row.commit_sha, |
| 575 | "success", |
| 576 | row.kind === "preview" ? "Preview is live" : "Production is live", |
| 577 | appUrl(row.script), |
| 578 | ); |
| 579 | return Response.json(ok(true)); |
| 580 | } |
| 581 | case "fail": |
| 582 | await this.finishFailed(id, String(body.message ?? "The build failed."), body.log == null ? null : String(body.log), Number(body.buildSeconds) || null); |
| 583 | return Response.json(ok(true)); |
| 584 | default: |
| 585 | return Response.json(fail("not_found", "No such step."), { status: 404 }); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | private async finishFailed(id: string, message: string, log: string | null, seconds: number | null): Promise<void> { |
| 590 | const row = await this.deploymentRow(id); |
| 591 | if (!row || (row.status !== "queued" && row.status !== "building")) return; |
| 592 | await this.db |
| 593 | .prepare( |
| 594 | `UPDATE deployments SET status = 'failed', error = ?, log = COALESCE(?, log), build_seconds = ?, finished_at = ? |
| 595 | WHERE id = ?`, |
| 596 | ) |
| 597 | .bind(message.slice(0, 2000), log, seconds, now(), id) |
| 598 | .run(); |
| 599 | // A failed build still used its sandbox. |
| 600 | if (seconds) await this.chargeBuild(row, seconds); |
| 601 | await this.status( |
| 602 | row.repo_id, |
| 603 | row.commit_sha, |
| 604 | "failure", |
| 605 | "Deployment failed", |
| 606 | `${this.env.SITE}/${row.namespace}/${row.name}/deployments/${id}`, |
| 607 | ); |
| 608 | } |
| 609 | |
| 610 | /** Each build is charged by the second at the container price plus the margin. */ |
| 611 | private async chargeBuild(row: DeploymentRow, seconds: number): Promise<void> { |
| 612 | const cost = Math.ceil(seconds) * DEPLOYMENTS_ALLOWANCE.microsPerBuildSecond; |
| 613 | if (cost <= 0) return; |
| 614 | const what = row.kind === "preview" ? `the preview of ${row.namespace}/${row.name}#${row.number}` : `${row.namespace}/${row.name} to production`; |
| 615 | await billingClient(this.env.BILLING).chargeFeature({ |
| 616 | workspace: row.namespace, |
| 617 | feature: "deployments", |
| 618 | costMicros: cost, |
| 619 | description: `Building ${what} (${Math.ceil(seconds)} s)`, |
| 620 | repo: `${row.namespace}/${row.name}`, |
| 621 | reference: `deploy/${row.id}`, |
| 622 | }); |
| 623 | await this.db |
| 624 | .prepare( |
| 625 | `INSERT INTO meters (namespace, month, build_seconds, build_micros) VALUES (?1, ?2, ?3, ?4) |
| 626 | ON CONFLICT (namespace, month) DO UPDATE SET build_seconds = build_seconds + ?3, build_micros = build_micros + ?4`, |
| 627 | ) |
| 628 | .bind(row.namespace, month(), Math.ceil(seconds), cost) |
| 629 | .run(); |
| 630 | } |
| 631 | |
| 632 | /** Remembers the most apps the workspace had up at once this month. */ |
| 633 | private async notePeak(namespace: string): Promise<void> { |
| 634 | await this.db |
| 635 | .prepare( |
| 636 | `INSERT INTO meters (namespace, month, peak_apps) |
| 637 | VALUES (?1, ?2, (SELECT COUNT(*) FROM apps WHERE namespace = ?1)) |
| 638 | ON CONFLICT (namespace, month) DO UPDATE SET |
| 639 | peak_apps = MAX(peak_apps, (SELECT COUNT(*) FROM apps WHERE namespace = ?1))`, |
| 640 | ) |
| 641 | .bind(namespace, month()) |
| 642 | .run(); |
| 643 | } |
| 644 | |
| 645 | private async status(repoId: string, sha: string, state: string, description: string, targetUrl: string): Promise<void> { |
| 646 | await this.env.WORK.fetch("https://work/rpc/set_commit_status", { |
| 647 | method: "POST", |
| 648 | headers: { "content-type": "application/json" }, |
| 649 | body: JSON.stringify({ repoId, sha, context: STATUS_CONTEXT, state, description, targetUrl }), |
| 650 | }).catch(() => undefined); |
| 651 | } |
| 652 | |
| 653 | // ---- Taking apps down ---------------------------------------------- |
| 654 | |
| 655 | private async removeApp(script: string): Promise<void> { |
| 656 | await this.cloudflare?.deleteScript(script); |
| 657 | await this.db.prepare("DELETE FROM apps WHERE script = ?").bind(script).run(); |
| 658 | } |
| 659 | |
| 660 | private async takeDownWhere(repoId: string, kind: DeployKind | null, number?: number): Promise<void> { |
| 661 | const apps = await this.db |
| 662 | .prepare( |
| 663 | `SELECT script FROM apps WHERE repo_id = ?1 AND (?2 IS NULL OR kind = ?2) AND (?3 IS NULL OR number = ?3)`, |
| 664 | ) |
| 665 | .bind(repoId, kind, number ?? null) |
| 666 | .all<{ script: string }>(); |
| 667 | for (const app of apps.results) await this.removeApp(app.script); |
| 668 | } |
| 669 | |
| 670 | // ---- Events -------------------------------------------------------- |
| 671 | |
| 672 | async onEvent(event: G1tEvent): Promise<void> { |
| 673 | switch (event.type) { |
| 674 | case "pull.opened": |
| 675 | case "pull.ready": |
| 676 | case "pull.updated": { |
| 677 | const repo = await this.pathById(event.data.repoId); |
| 678 | if (repo) await this.deployPreview(event.data.repoId, repo, event.data.number, "g1t"); |
| 679 | break; |
| 680 | } |
| 681 | case "pull.closed": |
| 682 | case "pull.merged": |
| 683 | await this.takeDownWhere(event.data.repoId, "preview", event.data.number); |
| 684 | break; |
| 685 | case "git.push": { |
| 686 | if (!event.data.defaultBranch) break; |
| 687 | const repo = await this.pathById(event.data.repoId); |
| 688 | if (!repo) break; |
| 689 | await this.deployProduction( |
| 690 | event.data.repoId, |
| 691 | repo, |
| 692 | event.data.ref.replace(/^refs\/heads\//, ""), |
| 693 | event.data.after, |
| 694 | event.actor ?? "g1t", |
| 695 | ); |
| 696 | break; |
| 697 | } |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | // ---- The sweep ----------------------------------------------------- |
| 702 | |
| 703 | /** |
| 704 | * Every few minutes: builds that died are failed; usage is counted; idle |
| 705 | * previews and the apps of workspaces whose plan ended come down; and a |
| 706 | * month that is over is charged past its allowance. |
| 707 | */ |
| 708 | async sweep(): Promise<void> { |
| 709 | const cutoff = new Date(Date.now() - BUILD_TIMEOUT_MS).toISOString(); |
| 710 | const stuck = await this.db |
| 711 | .prepare("SELECT id FROM deployments WHERE status IN ('queued', 'building') AND created_at < ?") |
| 712 | .bind(cutoff) |
| 713 | .all<{ id: string }>(); |
| 714 | for (const { id } of stuck.results) await this.finishFailed(id, "The build did not finish in 45 minutes.", null, null); |
| 715 | |
| 716 | const apps = (await this.db.prepare("SELECT * FROM apps").all<AppRow>()).results; |
| 717 | const workspaces = [...new Set(apps.map((app) => app.namespace))]; |
| 718 | |
| 719 | // Apps of workspaces whose plan has ended come down. |
| 720 | const billing = billingClient(this.env.BILLING); |
| 721 | for (const workspace of workspaces) { |
| 722 | const plan = await billing.hasFeature(workspace, "deployments"); |
| 723 | if (!plan.ok && plan.error.code === "payment_required") { |
| 724 | for (const app of apps.filter((a) => a.namespace === workspace)) await this.removeApp(app.script); |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | await this.count(apps).catch((error) => console.error("could not count usage", error)); |
| 729 | await this.takeDownIdle(); |
| 730 | await this.chargeMonths(); |
| 731 | } |
| 732 | |
| 733 | /** Counts this month's requests and CPU time per workspace, from analytics. */ |
| 734 | private async count(apps: AppRow[]): Promise<void> { |
| 735 | const cloudflare = this.cloudflare; |
| 736 | if (!cloudflare || apps.length === 0) return; |
| 737 | const start = `${month()}-01T00:00:00Z`; |
| 738 | const totals = await cloudflare.usage(apps.map((app) => app.script), start, now()); |
| 739 | // Analytics only counts apps that are up; the meter keeps what earlier |
| 740 | // apps used by never going down. |
| 741 | const perWorkspace = new Map<string, { requests: number; cpuMs: number }>(); |
| 742 | for (const app of apps) { |
| 743 | const used = totals.get(app.script); |
| 744 | if (!used) continue; |
| 745 | const sum = perWorkspace.get(app.namespace) ?? { requests: 0, cpuMs: 0 }; |
| 746 | sum.requests += used.requests; |
| 747 | sum.cpuMs += used.cpuMs; |
| 748 | perWorkspace.set(app.namespace, sum); |
| 749 | } |
| 750 | const at = now(); |
| 751 | for (const [namespace, used] of perWorkspace) { |
| 752 | await this.db |
| 753 | .prepare( |
| 754 | `INSERT INTO meters (namespace, month, requests, cpu_ms, counted_at) VALUES (?1, ?2, ?3, ?4, ?5) |
| 755 | ON CONFLICT (namespace, month) DO UPDATE SET |
| 756 | requests = MAX(requests, ?3), cpu_ms = MAX(cpu_ms, ?4), counted_at = ?5`, |
| 757 | ) |
| 758 | .bind(namespace, month(), used.requests, used.cpuMs, at) |
| 759 | .run(); |
| 760 | } |
| 761 | // When each preview last answered anyone, for the idle sweep. |
| 762 | const recent = await cloudflare.usage( |
| 763 | apps.filter((app) => app.kind === "preview").map((app) => app.script), |
| 764 | new Date(Date.now() - 24 * 60 * 60 * 1000).toISOString(), |
| 765 | at, |
| 766 | ); |
| 767 | for (const [script, used] of recent) { |
| 768 | if (used.requests > 0) { |
| 769 | await this.db.prepare("UPDATE apps SET last_request_at = ? WHERE script = ?").bind(at, script).run(); |
| 770 | } |
| 771 | } |
| 772 | for (const namespace of new Set(apps.map((app) => app.namespace))) await this.notePeak(namespace); |
| 773 | } |
| 774 | |
| 775 | /** Previews no one has visited in their repository's idle days. */ |
| 776 | private async takeDownIdle(): Promise<void> { |
| 777 | const idle = await this.db |
| 778 | .prepare( |
| 779 | `SELECT apps.script FROM apps JOIN settings ON settings.repo_id = apps.repo_id |
| 780 | WHERE apps.kind = 'preview' |
| 781 | AND COALESCE(apps.last_request_at, apps.deployed_at) < strftime('%Y-%m-%dT%H:%M:%fZ', 'now', '-' || settings.idle_days || ' days')`, |
| 782 | ) |
| 783 | .all<{ script: string }>(); |
| 784 | for (const { script } of idle.results) await this.removeApp(script); |
| 785 | } |
| 786 | |
| 787 | /** Charges each month that is over for what it used past the allowance, once. */ |
| 788 | private async chargeMonths(): Promise<void> { |
| 789 | const due = await this.db |
| 790 | .prepare("SELECT * FROM meters WHERE month < ? AND charged_at IS NULL") |
| 791 | .bind(month()) |
| 792 | .all<{ namespace: string; month: string; requests: number; cpu_ms: number; peak_apps: number }>(); |
| 793 | const a = DEPLOYMENTS_ALLOWANCE; |
| 794 | for (const meter of due.results) { |
| 795 | const extraRequests = Math.max(0, meter.requests - a.requests); |
| 796 | const extraCpu = Math.max(0, meter.cpu_ms - a.cpuMs); |
| 797 | const extraApps = Math.max(0, meter.peak_apps - a.apps); |
| 798 | const cost = Math.ceil( |
| 799 | (extraRequests / 1_000_000) * a.microsPerMillionRequests + |
| 800 | (extraCpu / 1_000_000) * a.microsPerMillionCpuMs + |
| 801 | extraApps * a.microsPerAppMonth, |
| 802 | ); |
| 803 | if (cost > 0) { |
| 804 | const parts = [ |
| 805 | extraApps && `${extraApps} extra apps`, |
| 806 | extraRequests && `${extraRequests.toLocaleString("en-US")} extra requests`, |
| 807 | extraCpu && `${extraCpu.toLocaleString("en-US")} extra CPU ms`, |
| 808 | ].filter(Boolean); |
| 809 | const charged = await billingClient(this.env.BILLING).chargeFeature({ |
| 810 | workspace: meter.namespace, |
| 811 | feature: "deployments", |
| 812 | costMicros: cost, |
| 813 | description: `Deployments in ${meter.month} past the plan: ${parts.join(", ")}`, |
| 814 | reference: `deployments/${meter.namespace}/${meter.month}`, |
| 815 | }); |
| 816 | if (!charged.ok) continue; |
| 817 | } |
| 818 | await this.db |
| 819 | .prepare("UPDATE meters SET charged_at = ? WHERE namespace = ? AND month = ?") |
| 820 | .bind(now(), meter.namespace, meter.month) |
| 821 | .run(); |
| 822 | } |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | /** `POST /rpc/<method>`: the arguments are the body. */ |
| 827 | async function rpc(service: Deployments, method: string, args: any): Promise<unknown> { |
| 828 | switch (method) { |
| 829 | case "settings": |
| 830 | return service.settings(args); |
| 831 | case "update_settings": |
| 832 | return service.updateSettings(args); |
| 833 | case "list": |
| 834 | return service.list(args); |
| 835 | case "get": |
| 836 | return service.get(args); |
| 837 | case "redeploy": |
| 838 | return service.redeploy(args); |
| 839 | case "take_down": |
| 840 | return service.takeDown(args); |
| 841 | case "usage": |
| 842 | return service.usage(args); |
| 843 | default: |
| 844 | return undefined; |
| 845 | } |
| 846 | } |
| 847 | |
| 848 | export default { |
| 849 | async fetch(request: Request, env: Env): Promise<Response> { |
| 850 | const { pathname } = new URL(request.url); |
| 851 | if (request.method !== "POST") return new Response("Not found\n", { status: 404 }); |
| 852 | const service = new Deployments(env); |
| 853 | const body = (await request.json().catch(() => ({}))) as Record<string, unknown>; |
| 854 | const rpcMatch = pathname.match(/^\/rpc\/([a-z_]+)$/); |
| 855 | if (rpcMatch) { |
| 856 | const result = await rpc(service, rpcMatch[1], body); |
| 857 | return result === undefined ? new Response("Unknown method\n", { status: 404 }) : Response.json(result); |
| 858 | } |
| 859 | // A build's reports, forwarded by the API. |
| 860 | const jobMatch = pathname.match(/^\/jobs\/([a-z0-9_]+)\/(started|session|finish|fail)$/); |
| 861 | if (jobMatch) return service.job(jobMatch[1], jobMatch[2], body); |
| 862 | return new Response("Not found\n", { status: 404 }); |
| 863 | }, |
| 864 | |
| 865 | async queue(batch: MessageBatch<G1tEvent>, env: Env): Promise<void> { |
| 866 | const service = new Deployments(env); |
| 867 | for (const message of batch.messages) { |
| 868 | try { |
| 869 | await service.onEvent(message.body); |
| 870 | message.ack(); |
| 871 | } catch (error) { |
| 872 | console.error("deployments could not handle", message.body.type, error); |
| 873 | message.retry(); |
| 874 | } |
| 875 | } |
| 876 | }, |
| 877 | |
| 878 | async scheduled(_controller: ScheduledController, env: Env): Promise<void> { |
| 879 | await new Deployments(env).sweep(); |
| 880 | }, |
| 881 | } satisfies ExportedHandler<Env, G1tEvent>; |