feat: write metadata file

packages/build/src/plugins_core/functions/index.ts

@@ -1,6 +1,6 @@
 import { resolve } from 'path'
 
-import { NodeBundlerName, RUNTIME, zipFunctions } from '@netlify/zip-it-and-ship-it'
+import { NodeBundlerName, RUNTIME, zipFunctions, FunctionResult } from '@netlify/zip-it-and-ship-it'
 import { pathExists } from 'path-exists'
 
 import { addErrorInfo } from '../../error/info.js'
@@ -13,7 +13,7 @@ import { getUserAndInternalFunctions, validateFunctionsSrc } from './utils.js'
 import { getZisiParameters } from './zisi.js'
 
 // Get a list of all unique bundlers in this run
-const getBundlers = (results: Awaited<ReturnType<typeof zipFunctions>> = []) =>
+const getBundlers = (results: FunctionResult[] = []) =>
   // using a Set to filter duplicates
   new Set(
     results
@@ -38,7 +38,7 @@ const eventTriggeredFunctions = new Set([
   'identity-login',
 ])
 
-const validateCustomRoutes = function (functions: Awaited<ReturnType<typeof zipFunctions>>) {
+const validateCustomRoutes = function (functions: FunctionResult[]) {
   for (const { routes, name, schedule } of functions) {
     if (!routes || routes.length === 0) continue
 
@@ -61,6 +61,7 @@ const validateCustomRoutes = function (functions: Awaited<ReturnType<typeof zipF
 }
 
 const zipFunctionsAndLogResults = async ({
+  branch,
   buildDir,
   childEnv,
   featureFlags,
@@ -76,6 +77,7 @@ const zipFunctionsAndLogResults = async ({
   systemLog,
 }) => {
   const zisiParameters = getZisiParameters({
+    branch,
     buildDir,
     childEnv,
     featureFlags,
@@ -118,6 +120,7 @@ const coreStep = async function ({
     FUNCTIONS_DIST: relativeFunctionsDist,
   },
   buildDir,
+  branch,
   packagePath,
   logs,
   netlifyConfig,
@@ -166,6 +169,7 @@ const coreStep = async function ({
   }
 
   const { bundlers } = await zipFunctionsAndLogResults({
+    branch,
     buildDir,
     childEnv,
     featureFlags,
@@ -237,7 +241,7 @@ export const bundleFunctions = {
 // `zip-it-and-ship-it` methods. Therefore, we need to use an intermediary
 // function and export them so tests can use it.
 export const zipItAndShipIt = {
-  async zipFunctions(...args: Parameters<typeof zipFunctions>) {
+  async zipFunctions(...args: Parameters<typeof zipFunctions>): Promise<FunctionResult[]> {
     return await zipFunctions(...args)
   },
 }

packages/build/src/plugins_core/functions/zisi.ts

@@ -9,6 +9,7 @@ import type { FeatureFlags } from '../../core/feature_flags.js'
 import { getZisiFeatureFlags } from './feature_flags.js'
 
 type GetZisiParametersType = {
+  branch?: string
   buildDir: string
   childEnv: Record<string, string>
   featureFlags: FeatureFlags
@@ -40,6 +41,7 @@ const getLambdaNodeVersion = (childEnv: Record<string, string>, userNodeVersion:
 }
 
 export const getZisiParameters = ({
+  branch,
   buildDir,
   childEnv,
   featureFlags,
@@ -65,6 +67,7 @@ export const getZisiParameters = ({
 
   return {
     basePath: buildDir,
+    branch,
     config,
     manifest,
     featureFlags: zisiFeatureFlags,

packages/build/tests/functions/fixtures/v2/netlify/functions/test.mjs

@@ -0,0 +1,3 @@
+export default async () => new Response("Hello")
+
+export const config = { path: "/hello" }

packages/build/tests/functions/tests.js

@@ -1,9 +1,9 @@
 import { readdir, readFile, rm, stat, writeFile } from 'fs/promises'
-import { resolve } from 'path'
+import { join, resolve } from 'path'
 import { version as nodeVersion } from 'process'
 import { fileURLToPath } from 'url'
 
-import { Fixture, normalizeOutput, removeDir, getTempName } from '@netlify/testing'
+import { Fixture, normalizeOutput, removeDir, getTempName, unzipFile } from '@netlify/testing'
 import test from 'ava'
 import { pathExists } from 'path-exists'
 import semver from 'semver'
@@ -204,3 +204,39 @@ if (semver.gte(nodeVersion, '16.9.0')) {
     t.true(app2FunctionsDist.includes('worker.zip'))
   })
 }
+
+test('Functions: creates metadata file', async (t) => {
+  const fixture = await new Fixture('./fixtures/v2').withCopyRoot({ git: false })
+  const build = await fixture
+    .withFlags({
+      branch: 'my-branch',
+      cwd: fixture.repositoryRoot,
+      featureFlags: { zisi_add_metadata_file: true },
+    })
+    .runWithBuildAndIntrospect()
+
+  t.true(build.success)
+
+  const functionsDistPath = resolve(fixture.repositoryRoot, '.netlify/functions')
+  const functionsDistFiles = await readdir(functionsDistPath)
+
+  t.true(functionsDistFiles.includes('manifest.json'))
+  t.true(functionsDistFiles.includes('test.zip'))
+
+  const unzipPath = join(functionsDistPath, `.netlify-test-${Date.now()}`)
+
+  await unzipFile(join(functionsDistPath, 'test.zip'), unzipPath)
+
+  const functionFiles = await readdir(unzipPath)
+
+  t.true(functionFiles.includes('___netlify-bootstrap.mjs'))
+  t.true(functionFiles.includes('___netlify-entry-point.mjs'))
+  t.true(functionFiles.includes('___netlify-metadata.json'))
+  t.true(functionFiles.includes('test.mjs'))
+
+  const metadata = JSON.parse(await readFile(join(unzipPath, '___netlify-metadata.json'), 'utf8'))
+
+  t.is(semver.valid(metadata.bootstrap_version), metadata.bootstrap_version)
+  t.is(metadata.branch, 'my-branch')
+  t.is(metadata.version, 1)
+})

packages/testing/src/fs.ts

@@ -0,0 +1,14 @@
+import { mkdir } from 'fs/promises'
+import { platform } from 'process'
+
+import { execa } from 'execa'
+
+export const unzipFile = async function (path: string, dest: string): Promise<void> {
+  await mkdir(dest, { recursive: true })
+
+  if (platform === 'win32') {
+    await execa('tar', ['-xf', path, '-C', dest])
+  } else {
+    await execa('unzip', ['-o', path, '-d', dest])
+  }
+}

packages/testing/src/index.ts

@@ -1,5 +1,6 @@
 export * from './dir.js'
 export * from './fixture.js'
+export * from './fs.js'
 export * from './normalize.js'
 export * from './server.js'
 export * from './tcp_server.js'

packages/zip-it-and-ship-it/src/feature_flags.ts

@@ -33,8 +33,8 @@ export const defaultFlags = {
   // Adds the `___netlify-telemetry.mjs` file to the function bundle.
   zisi_add_instrumentation_loader: true,
 
-  // Adds a `___netlify-bootstrap-version` file to the function bundle.
-  zisi_add_version_file: false,
+  // Adds a `___netlify-metadata.json` file to the function bundle.
+  zisi_add_metadata_file: false,
 } as const
 
 export type FeatureFlags = Partial<Record<keyof typeof defaultFlags, boolean>>

packages/zip-it-and-ship-it/src/runtimes/node/index.ts

@@ -37,6 +37,7 @@ const getSrcFilesWithBundler: GetSrcFilesFunction = async (parameters) => {
 const zipFunction: ZipFunction = async function ({
   archiveFormat,
   basePath,
+  branch,
   cache,
   config = {},
   destFolder,
@@ -113,6 +114,7 @@ const zipFunction: ZipFunction = async function ({
     aliases,
     archiveFormat,
     basePath: finalBasePath,
+    branch,
     cache,
     destFolder,
     extension,

packages/zip-it-and-ship-it/src/runtimes/node/utils/entry_file.ts

@@ -18,6 +18,7 @@ import { normalizeFilePath } from './normalize_path.js'
 export const ENTRY_FILE_NAME = '___netlify-entry-point'
 export const BOOTSTRAP_FILE_NAME = '___netlify-bootstrap.mjs'
 export const BOOTSTRAP_VERSION_FILE_NAME = '___netlify-bootstrap-version'
+export const METADATA_FILE_NAME = '___netlify-metadata.json'
 export const TELEMETRY_FILE_NAME = '___netlify-telemetry.mjs'
 
 const require = createRequire(import.meta.url)

packages/zip-it-and-ship-it/src/runtimes/node/utils/metadata_file.ts

@@ -0,0 +1,11 @@
+export interface MetadataFile {
+  bootstrap_version?: string
+  branch?: string
+  version: number
+}
+
+export const getMetadataFile = (bootstrapVersion?: string, branch?: string): MetadataFile => ({
+  bootstrap_version: bootstrapVersion,
+  branch,
+  version: 1,
+})

packages/zip-it-and-ship-it/src/runtimes/node/utils/zip.ts

@@ -23,13 +23,14 @@ import { cachedLstat, mkdirAndWriteFile } from '../../../utils/fs.js'
 
 import {
   BOOTSTRAP_FILE_NAME,
-  BOOTSTRAP_VERSION_FILE_NAME,
+  METADATA_FILE_NAME,
   conflictsWithEntryFile,
   EntryFile,
   getEntryFile,
   getTelemetryFile,
   isNamedLikeEntryFile,
 } from './entry_file.js'
+import { getMetadataFile } from './metadata_file.js'
 import { ModuleFormat } from './module_format.js'
 import { normalizeFilePath } from './normalize_path.js'
 import { getPackageJsonIfAvailable } from './package_json.js'
@@ -44,6 +45,7 @@ const DEFAULT_USER_SUBDIRECTORY = 'src'
 interface ZipNodeParameters {
   aliases?: Map<string, string>
   basePath: string
+  branch?: string
   cache: RuntimeCache
   destFolder: string
   extension: string
@@ -186,6 +188,7 @@ const createDirectory = async function ({
 const createZipArchive = async function ({
   aliases = new Map(),
   basePath,
+  branch,
   cache,
   destFolder,
   extension,
@@ -251,12 +254,11 @@ const createZipArchive = async function ({
   if (runtimeAPIVersion === 2) {
     const bootstrapPath = addBootstrapFile(srcFiles, aliases)
 
-    if (featureFlags.zisi_add_version_file === true) {
+    if (featureFlags.zisi_add_metadata_file === true) {
       const { version: bootstrapVersion } = await getPackageJsonIfAvailable(bootstrapPath)
+      const payload = JSON.stringify(getMetadataFile(bootstrapVersion, branch))
 
-      if (bootstrapVersion) {
-        addZipContent(archive, bootstrapVersion, BOOTSTRAP_VERSION_FILE_NAME)
-      }
+      addZipContent(archive, payload, METADATA_FILE_NAME)
     }
   }
 

packages/zip-it-and-ship-it/src/runtimes/runtime.ts

@@ -66,6 +66,7 @@ export type ZipFunction = (
   args: {
     archiveFormat: ArchiveFormat
     basePath?: string
+    branch?: string
     cache: RuntimeCache
     config: FunctionConfig
     destFolder: string

packages/zip-it-and-ship-it/src/zip.ts

@@ -13,14 +13,15 @@ import { getFunctionsFromPaths } from './runtimes/index.js'
 import { MODULE_FORMAT } from './runtimes/node/utils/module_format.js'
 import { addArchiveSize } from './utils/archive_size.js'
 import { RuntimeCache } from './utils/cache.js'
-import { formatZipResult } from './utils/format_result.js'
+import { formatZipResult, FunctionResult } from './utils/format_result.js'
 import { listFunctionsDirectories, resolveFunctionsDirectories } from './utils/fs.js'
 import { getLogger, LogFunction } from './utils/logger.js'
 import { nonNullable } from './utils/non_nullable.js'
 
 export interface ZipFunctionOptions {
   archiveFormat?: ArchiveFormat
   basePath?: string
+  branch?: string
   config?: Config
   featureFlags?: FeatureFlags
   repositoryRoot?: string
@@ -53,6 +54,7 @@ export const zipFunctions = async function (
   {
     archiveFormat = ARCHIVE_FORMAT.ZIP,
     basePath,
+    branch,
     config = {},
     configFileDirectories,
     featureFlags: inputFeatureFlags,
@@ -63,7 +65,7 @@ export const zipFunctions = async function (
     debug,
     internalSrcFolder,
   }: ZipFunctionsOptions = {},
-) {
+): Promise<FunctionResult[]> {
   validateArchiveFormat(archiveFormat)
 
   const logger = getLogger(systemLog, debug)
@@ -94,6 +96,7 @@ export const zipFunctions = async function (
       const zipResult = await func.runtime.zipFunction({
         archiveFormat,
         basePath,
+        branch,
         cache,
         config: func.config,
         destFolder,
@@ -145,7 +148,7 @@ export const zipFunction = async function (
     debug,
     internalSrcFolder,
   }: ZipFunctionOptions = {},
-) {
+): Promise<FunctionResult | undefined> {
   validateArchiveFormat(archiveFormat)
 
   const logger = getLogger(systemLog, debug)

packages/zip-it-and-ship-it/tests/v2api.test.ts

@@ -709,22 +709,48 @@ describe.runIf(semver.gte(nodeVersion, '18.13.0'))('V2 functions API', () => {
     expect(files[0].runtimeVersion).toBe('nodejs20.x')
   })
 
-  test('Adds a file with the bootstrap version to the ZIP archive', async () => {
-    const fixtureName = 'v2-api'
-    const { files } = await zipFixture(fixtureName, {
-      fixtureDir: FIXTURES_ESM_DIR,
-      opts: {
-        featureFlags: {
-          zisi_add_version_file: true,
+  describe('Adds a file with metadata', () => {
+    test('Without a branch', async () => {
+      const fixtureName = 'v2-api'
+      const { files } = await zipFixture(fixtureName, {
+        fixtureDir: FIXTURES_ESM_DIR,
+        opts: {
+          featureFlags: {
+            zisi_add_metadata_file: true,
+          },
         },
-      },
+      })
+      const [unzippedFunction] = await unzipFiles(files)
+      const bootstrapPath = getBootstrapPath()
+      const bootstrapPackageJson = await readFile(resolve(bootstrapPath, '..', '..', 'package.json'), 'utf8')
+      const { version: bootstrapVersion } = JSON.parse(bootstrapPackageJson)
+      const versionFileContents = await readFile(join(unzippedFunction.unzipPath, '___netlify-metadata.json'), 'utf8')
+
+      expect(JSON.parse(versionFileContents)).toEqual({ bootstrap_version: bootstrapVersion, version: 1 })
     })
-    const [unzippedFunction] = await unzipFiles(files)
-    const bootstrapPath = getBootstrapPath()
-    const bootstrapPackageJson = await readFile(resolve(bootstrapPath, '..', '..', 'package.json'), 'utf8')
-    const { version: bootstrapVersion } = JSON.parse(bootstrapPackageJson)
-    const versionFileContents = await readFile(join(unzippedFunction.unzipPath, '___netlify-bootstrap-version'), 'utf8')
 
-    expect(versionFileContents).toBe(bootstrapVersion)
+    test('With a branch', async () => {
+      const fixtureName = 'v2-api'
+      const { files } = await zipFixture(fixtureName, {
+        fixtureDir: FIXTURES_ESM_DIR,
+        opts: {
+          branch: 'main',
+          featureFlags: {
+            zisi_add_metadata_file: true,
+          },
+        },
+      })
+      const [unzippedFunction] = await unzipFiles(files)
+      const bootstrapPath = getBootstrapPath()
+      const bootstrapPackageJson = await readFile(resolve(bootstrapPath, '..', '..', 'package.json'), 'utf8')
+      const { version: bootstrapVersion } = JSON.parse(bootstrapPackageJson)
+      const versionFileContents = await readFile(join(unzippedFunction.unzipPath, '___netlify-metadata.json'), 'utf8')
+
+      expect(JSON.parse(versionFileContents)).toEqual({
+        bootstrap_version: bootstrapVersion,
+        branch: 'main',
+        version: 1,
+      })
+    })
   })
 })