feat: skip work when gatsby version supports adapters (#639)

* feat: skip work when gatsby version supports adapters

* fix: unit tests

* feat: log that work is skipped when adapters are used

* test: add e2e test

* test: add unit test for shouldSkip

* test: log version

* test: check both stdout and stderr for logs

* test: bump timeout

* test: bump canary version

---------

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: pieh

Diff for: plugin/src/helpers/config.ts

@@ -15,7 +15,7 @@ import fs, {
 import type { GatsbyConfig, PluginRef } from 'gatsby'
 import { v4 as uuidv4 } from 'uuid'
 
-import { checkPackageVersion } from './files'
+import { checkPackageVersion, findModuleFromBase } from './files'
 import type { FunctionList } from './functions'
 
 /**
@@ -338,4 +338,48 @@ function isEnvSet(envVar: string) {
 export function getGatsbyRoot(publish: string): string {
   return resolve(dirname(publish))
 }
+
+export function shouldSkip(publishDir: string): boolean {
+  if (typeof process.env.NETLIFY_SKIP_GATSBY_BUILD_PLUGIN !== 'undefined') {
+    return isEnvSet('NETLIFY_SKIP_GATSBY_BUILD_PLUGIN')
+  }
+
+  const siteRoot = getGatsbyRoot(publishDir)
+
+  let shouldSkipResult = false
+
+  try {
+    const gatsbyPath = findModuleFromBase({
+      paths: [siteRoot],
+      candidates: ['gatsby/package.json'],
+    })
+    if (gatsbyPath) {
+      const gatsbyPluginUtilsPath = findModuleFromBase({
+        paths: [gatsbyPath, siteRoot],
+        candidates: ['gatsby-plugin-utils'],
+      })
+
+      // eslint-disable-next-line import/no-dynamic-require, n/global-require, @typescript-eslint/no-var-requires
+      const { hasFeature } = require(gatsbyPluginUtilsPath)
+
+      if (hasFeature(`adapters`)) {
+        shouldSkipResult = true
+      }
+    }
+  } catch {
+    // ignore
+  }
+
+  process.env.NETLIFY_SKIP_GATSBY_BUILD_PLUGIN = shouldSkipResult
+    ? 'true'
+    : 'false'
+
+  if (shouldSkipResult) {
+    console.log(
+      'Skipping @netlify/plugin-gatsby work, because used Gatsby version supports adapters.',
+    )
+  }
+
+  return shouldSkipResult
+}
 /* eslint-enable max-lines */

Diff for: plugin/src/index.ts

@@ -14,6 +14,7 @@ import {
   getNeededFunctions,
   modifyConfig,
   shouldSkipBundlingDatastore,
+  shouldSkip,
 } from './helpers/config'
 import { modifyFiles } from './helpers/files'
 import { deleteFunctions, writeFunctions } from './helpers/functions'
@@ -33,6 +34,11 @@ export async function onPreBuild({
       `Gatsby sites must publish the "public" directory, but your site’s publish directory is set to “${PUBLISH_DIR}”. Please set your publish directory to your Gatsby site’s "public" directory.`,
     )
   }
+
+  if (shouldSkip(PUBLISH_DIR)) {
+    return
+  }
+
   await restoreCache({ utils, publish: PUBLISH_DIR })
 
   await checkConfig({ utils, netlifyConfig })
@@ -47,6 +53,11 @@ export async function onBuild({
     FUNCTIONS_SRC = DEFAULT_FUNCTIONS_SRC,
     INTERNAL_FUNCTIONS_SRC,
   } = constants
+
+  if (shouldSkip(PUBLISH_DIR)) {
+    return
+  }
+
   const cacheDir = normalizedCacheDir(PUBLISH_DIR)
 
   if (
@@ -81,6 +92,10 @@ export async function onPostBuild({
   constants: { PUBLISH_DIR, FUNCTIONS_DIST },
   utils,
 }): Promise<void> {
+  if (shouldSkip(PUBLISH_DIR)) {
+    return
+  }
+
   await saveCache({ publish: PUBLISH_DIR, utils })
 
   const cacheDir = normalizedCacheDir(PUBLISH_DIR)
@@ -92,7 +107,11 @@ export async function onPostBuild({
   }
 }
 
-export async function onSuccess() {
+export async function onSuccess({ constants: { PUBLISH_DIR } }) {
+  if (shouldSkip(PUBLISH_DIR)) {
+    return
+  }
+
   // Pre-warm the lambdas as downloading the datastore file can take a while
   if (shouldSkipBundlingDatastore()) {
     const FETCH_TIMEOUT = 5000

Diff for: plugin/test/fixtures/v5/with-adapters/.env.production

@@ -0,0 +1 @@
+pickle=word

Diff for: plugin/test/fixtures/v5/with-adapters/.gitignore

@@ -0,0 +1,14 @@
+node_modules/
+.cache/
+public
+
+# Local Netlify folder
+.netlify
+netlify/functions/gatsby/functions
+deployment.json
+
+# @netlify/plugin-gatsby ignores start
+netlify/functions/gatsby
+# @netlify/plugin-gatsby ignores end
+
+package-lock.json

Diff for: plugin/test/fixtures/v5/with-adapters/.nvmrc

@@ -0,0 +1 @@
+v14.17.0

Diff for: plugin/test/fixtures/v5/with-adapters/e2e-tests/__snapshots__/functions.test.js.snap

@@ -0,0 +1,41 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Local functions can parse different ways of sending data file in multipart/form 1`] = `
+Object {
+  "body": Object {
+    "something": "here",
+  },
+  "files": Array [
+    Object {
+      "buffer": Object {
+        "data": Array [
+          104,
+          105,
+        ],
+        "type": "Buffer",
+      },
+      "encoding": "7bit",
+      "fieldname": "file",
+      "mimetype": "text/plain",
+      "originalname": "test.txt",
+      "size": 2,
+    },
+  ],
+}
+`;
+
+exports[`Local routing dynamic routes 1`] = `
+Object {
+  "super": "additional",
+  "userId": "23",
+}
+`;
+
+exports[`Local routing dynamic routes 2`] = `
+Object {
+  "*": "super",
+  "0": "super",
+}
+`;
+
+exports[`Local routing routes with special characters 1`] = `"I-Am-Capitalized.js"`;

Diff for: plugin/test/fixtures/v5/with-adapters/e2e-tests/build.test.js

@@ -0,0 +1,33 @@
+// eslint-disable-next-line node/no-unpublished-require
+const { buildSite } = require('../../../../helpers')
+const { readFileSync } = require('fs')
+
+jest.setTimeout(240_000)
+describe('A site using gatsby version with adapters', () => {
+  it('successfully builds and disables @netlify/plugin-gatsby and gatsby-plugin-netlify', async () => {
+    const {
+      success,
+      logs: { stdout, stderr },
+    } = await buildSite()
+
+    // in CI warnings are outputted to stderr (yikes)
+    const fullOutput = stdout + stderr
+
+    expect(success).toBeTruthy()
+
+    expect(fullOutput).toContain(
+      'Skipping @netlify/plugin-gatsby work, because used Gatsby version supports adapters.',
+    )
+    expect(fullOutput).toContain('Disabling plugin "gatsby-plugin-netlify"')
+
+    const _redirectsContent = readFileSync('public/_redirects', 'utf8')
+
+    expect(_redirectsContent).not.toContain(
+      '# @netlify/plugin-gatsby redirects start',
+    )
+    expect(_redirectsContent).not.toContain(
+      '## Created with gatsby-plugin-netlify',
+    )
+    expect(_redirectsContent).toContain('# gatsby-adapter-netlify start')
+  })
+})

Diff for: plugin/test/fixtures/v5/with-adapters/e2e-tests/fixtures/test.txt

@@ -0,0 +1 @@
+hi

Diff for: plugin/test/fixtures/v5/with-adapters/e2e-tests/functions.test.js

@@ -0,0 +1,8 @@
+const { runTests } = require('./test-helpers')
+
+if (process.env.TEST_ENV === 'netlify') {
+  const { deploy_url } = require('../deployment.json')
+  runTests('Netlify', deploy_url)
+} else {
+  runTests('Local', 'http://localhost:8888')
+}