Use new Oracle GraalVM EA builds repo.

.github/workflows/test.yml

@@ -35,6 +35,9 @@ jobs:
         ]
         components: ['']
         include:
+          - java-version: 'latest-ea'
+            distribution: 'graalvm'
+            os: ubuntu-latest
           - java-version: '22-ea'
             distribution: 'graalvm'
             os: ubuntu-latest

__tests__/graalvm.test.ts

@@ -2,7 +2,11 @@ import * as path from 'path'
 import * as graalvm from '../src/graalvm'
 import {expect, test} from '@jest/globals'
 import {getTaggedRelease} from '../src/utils'
-import {findGraalVMVersion, findHighestJavaVersion} from '../src/graalvm'
+import {
+  findGraalVMVersion,
+  findHighestJavaVersion,
+  findLatestEABuildDownloadUrl
+} from '../src/graalvm'
 import {GRAALVM_RELEASES_REPO} from '../src/constants'
 
 process.env['RUNNER_TOOL_CACHE'] = path.join(__dirname, 'TOOL_CACHE')
@@ -79,3 +83,21 @@ test('find version/javaVersion', async () => {
   }
   expect(error.message).toContain('Could not find highest Java version.')
 })
+
+test('find version/javaVersion', async () => {
+  let url22EA = await findLatestEABuildDownloadUrl('22-ea')
+  expect(url22EA).not.toBe('')
+  let urlLatestEA = await findLatestEABuildDownloadUrl('latest-ea')
+  expect(urlLatestEA).not.toBe('')
+
+  let error = new Error('unexpected')
+  try {
+    await findLatestEABuildDownloadUrl('8-ea')
+  } catch (err) {
+    if (!(err instanceof Error)) {
+      fail(`Unexpected non-Error: ${err}`)
+    }
+    error = err
+  }
+  expect(error.message).toContain('Unable to resolve download URL for')
+})

dist/cleanup/index.js

@@ -92172,7 +92172,7 @@ else {
 "use strict";
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.ERROR_HINT = exports.EVENT_NAME_PULL_REQUEST = exports.ENV_GITHUB_EVENT_NAME = exports.GDS_GRAALVM_PRODUCT_ID = exports.GDS_BASE = exports.MANDREL_NAMESPACE = exports.GRAALVM_RELEASES_REPO = exports.GRAALVM_PLATFORM = exports.GRAALVM_GH_USER = exports.GRAALVM_FILE_EXTENSION = exports.GRAALVM_ARCH = exports.JDK_HOME_SUFFIX = exports.JDK_PLATFORM = exports.JDK_ARCH = exports.VERSION_LATEST = exports.VERSION_DEV = exports.DISTRIBUTION_MANDREL = exports.DISTRIBUTION_GRAALVM_COMMUNITY = exports.DISTRIBUTION_GRAALVM = exports.IS_WINDOWS = exports.IS_MACOS = exports.IS_LINUX = exports.INPUT_NI_MUSL = exports.INPUT_CHECK_FOR_UPDATES = exports.INPUT_CACHE = exports.INPUT_SET_JAVA_HOME = exports.INPUT_GITHUB_TOKEN = exports.INPUT_COMPONENTS = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_VERSION = exports.INPUT_GDS_TOKEN = exports.INPUT_VERSION = void 0;
+exports.ERROR_HINT = exports.ERROR_REQUEST = exports.EVENT_NAME_PULL_REQUEST = exports.ENV_GITHUB_EVENT_NAME = exports.GDS_GRAALVM_PRODUCT_ID = exports.GDS_BASE = exports.MANDREL_NAMESPACE = exports.GRAALVM_RELEASES_REPO = exports.GRAALVM_PLATFORM = exports.GRAALVM_GH_USER = exports.GRAALVM_FILE_EXTENSION = exports.GRAALVM_ARCH = exports.JDK_HOME_SUFFIX = exports.JDK_PLATFORM = exports.JDK_ARCH = exports.VERSION_LATEST = exports.VERSION_DEV = exports.DISTRIBUTION_MANDREL = exports.DISTRIBUTION_GRAALVM_COMMUNITY = exports.DISTRIBUTION_GRAALVM = exports.IS_WINDOWS = exports.IS_MACOS = exports.IS_LINUX = exports.INPUT_NI_MUSL = exports.INPUT_CHECK_FOR_UPDATES = exports.INPUT_CACHE = exports.INPUT_SET_JAVA_HOME = exports.INPUT_GITHUB_TOKEN = exports.INPUT_COMPONENTS = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_VERSION = exports.INPUT_GDS_TOKEN = exports.INPUT_VERSION = void 0;
 exports.INPUT_VERSION = 'version';
 exports.INPUT_GDS_TOKEN = 'gds-token';
 exports.INPUT_JAVA_VERSION = 'java-version';
@@ -92204,6 +92204,7 @@ exports.GDS_BASE = 'https://gds.oracle.com/api/20220101';
 exports.GDS_GRAALVM_PRODUCT_ID = 'D53FAE8052773FFAE0530F15000AA6C6';
 exports.ENV_GITHUB_EVENT_NAME = 'GITHUB_EVENT_NAME';
 exports.EVENT_NAME_PULL_REQUEST = 'pull_request';
+exports.ERROR_REQUEST = 'Please file an issue at: https://github.com/graalvm/setup-graalvm/issues.';
 exports.ERROR_HINT = 'If you think this is a mistake, please file an issue at: https://github.com/graalvm/setup-graalvm/issues.';
 function determineJDKArchitecture() {
     switch (process.arch) {
@@ -92864,7 +92865,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.createPRComment = exports.isPREvent = exports.toSemVer = exports.calculateSHA256 = exports.downloadExtractAndCacheJDK = exports.downloadAndExtractJDK = exports.getMatchingTags = exports.getTaggedRelease = exports.getLatestRelease = exports.getLatestPrerelease = exports.exec = void 0;
+exports.createPRComment = exports.isPREvent = exports.toSemVer = exports.calculateSHA256 = exports.downloadExtractAndCacheJDK = exports.downloadAndExtractJDK = exports.getMatchingTags = exports.getTaggedRelease = exports.getContents = exports.getLatestRelease = exports.exec = void 0;
 const c = __importStar(__nccwpck_require__(9042));
 const core = __importStar(__nccwpck_require__(2186));
 const github = __importStar(__nccwpck_require__(5438));
@@ -92895,23 +92896,6 @@ function exec(commandLine, args, options) {
     });
 }
 exports.exec = exec;
-function getLatestPrerelease(repo) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const githubToken = getGitHubToken();
-        const options = githubToken.length > 0 ? { auth: githubToken } : {};
-        const octokit = new GitHubDotCom(options);
-        const releases = (yield octokit.request('GET /repos/{owner}/{repo}/releases', {
-            owner: c.GRAALVM_GH_USER,
-            repo
-        })).data;
-        const firstPrerelease = releases.find(r => r.prerelease);
-        if (!firstPrerelease) {
-            throw new Error(`Unable to find latest prerelease in ${repo}`);
-        }
-        return firstPrerelease;
-    });
-}
-exports.getLatestPrerelease = getLatestPrerelease;
 function getLatestRelease(repo) {
     return __awaiter(this, void 0, void 0, function* () {
         const githubToken = getGitHubToken();
@@ -92924,6 +92908,19 @@ function getLatestRelease(repo) {
     });
 }
 exports.getLatestRelease = getLatestRelease;
+function getContents(repo, path) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const githubToken = getGitHubToken();
+        const options = githubToken.length > 0 ? { auth: githubToken } : {};
+        const octokit = new GitHubDotCom(options);
+        return (yield octokit.request('GET /repos/{owner}/{repo}/contents/{path}', {
+            owner: c.GRAALVM_GH_USER,
+            repo,
+            path
+        })).data;
+    });
+}
+exports.getContents = getContents;
 function getTaggedRelease(repo, tag) {
     return __awaiter(this, void 0, void 0, function* () {
         const githubToken = getGitHubToken();

dist/main/index.js

@@ -92738,7 +92738,7 @@ function wrappy (fn, cb) {
 "use strict";
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.ERROR_HINT = exports.EVENT_NAME_PULL_REQUEST = exports.ENV_GITHUB_EVENT_NAME = exports.GDS_GRAALVM_PRODUCT_ID = exports.GDS_BASE = exports.MANDREL_NAMESPACE = exports.GRAALVM_RELEASES_REPO = exports.GRAALVM_PLATFORM = exports.GRAALVM_GH_USER = exports.GRAALVM_FILE_EXTENSION = exports.GRAALVM_ARCH = exports.JDK_HOME_SUFFIX = exports.JDK_PLATFORM = exports.JDK_ARCH = exports.VERSION_LATEST = exports.VERSION_DEV = exports.DISTRIBUTION_MANDREL = exports.DISTRIBUTION_GRAALVM_COMMUNITY = exports.DISTRIBUTION_GRAALVM = exports.IS_WINDOWS = exports.IS_MACOS = exports.IS_LINUX = exports.INPUT_NI_MUSL = exports.INPUT_CHECK_FOR_UPDATES = exports.INPUT_CACHE = exports.INPUT_SET_JAVA_HOME = exports.INPUT_GITHUB_TOKEN = exports.INPUT_COMPONENTS = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_VERSION = exports.INPUT_GDS_TOKEN = exports.INPUT_VERSION = void 0;
+exports.ERROR_HINT = exports.ERROR_REQUEST = exports.EVENT_NAME_PULL_REQUEST = exports.ENV_GITHUB_EVENT_NAME = exports.GDS_GRAALVM_PRODUCT_ID = exports.GDS_BASE = exports.MANDREL_NAMESPACE = exports.GRAALVM_RELEASES_REPO = exports.GRAALVM_PLATFORM = exports.GRAALVM_GH_USER = exports.GRAALVM_FILE_EXTENSION = exports.GRAALVM_ARCH = exports.JDK_HOME_SUFFIX = exports.JDK_PLATFORM = exports.JDK_ARCH = exports.VERSION_LATEST = exports.VERSION_DEV = exports.DISTRIBUTION_MANDREL = exports.DISTRIBUTION_GRAALVM_COMMUNITY = exports.DISTRIBUTION_GRAALVM = exports.IS_WINDOWS = exports.IS_MACOS = exports.IS_LINUX = exports.INPUT_NI_MUSL = exports.INPUT_CHECK_FOR_UPDATES = exports.INPUT_CACHE = exports.INPUT_SET_JAVA_HOME = exports.INPUT_GITHUB_TOKEN = exports.INPUT_COMPONENTS = exports.INPUT_DISTRIBUTION = exports.INPUT_JAVA_VERSION = exports.INPUT_GDS_TOKEN = exports.INPUT_VERSION = void 0;
 exports.INPUT_VERSION = 'version';
 exports.INPUT_GDS_TOKEN = 'gds-token';
 exports.INPUT_JAVA_VERSION = 'java-version';
@@ -92770,6 +92770,7 @@ exports.GDS_BASE = 'https://gds.oracle.com/api/20220101';
 exports.GDS_GRAALVM_PRODUCT_ID = 'D53FAE8052773FFAE0530F15000AA6C6';
 exports.ENV_GITHUB_EVENT_NAME = 'GITHUB_EVENT_NAME';
 exports.EVENT_NAME_PULL_REQUEST = 'pull_request';
+exports.ERROR_REQUEST = 'Please file an issue at: https://github.com/graalvm/setup-graalvm/issues.';
 exports.ERROR_HINT = 'If you think this is a mistake, please file an issue at: https://github.com/graalvm/setup-graalvm/issues.';
 function determineJDKArchitecture() {
     switch (process.arch) {
@@ -93841,7 +93842,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.setUpGraalVMRelease = exports.findGraalVMVersion = exports.setUpGraalVMLatest_22_X = exports.findHighestJavaVersion = exports.setUpGraalVMJDKDevBuild = exports.findLatestGraalVMJDKCEJavaVersion = exports.setUpGraalVMJDKCE = exports.setUpGraalVMJDK = void 0;
+exports.setUpGraalVMRelease = exports.findGraalVMVersion = exports.setUpGraalVMLatest_22_X = exports.findHighestJavaVersion = exports.setUpGraalVMJDKDevBuild = exports.findLatestGraalVMJDKCEJavaVersion = exports.setUpGraalVMJDKCE = exports.findLatestEABuildDownloadUrl = exports.setUpGraalVMJDK = void 0;
 const c = __importStar(__nccwpck_require__(9042));
 const semver = __importStar(__nccwpck_require__(1383));
 const utils_1 = __nccwpck_require__(1314);
@@ -93850,7 +93851,8 @@ const tool_cache_1 = __nccwpck_require__(7784);
 const path_1 = __nccwpck_require__(1017);
 const GRAALVM_DL_BASE = 'https://download.oracle.com/graalvm';
 const GRAALVM_CE_DL_BASE = `https://github.com/graalvm/${c.GRAALVM_RELEASES_REPO}/releases/download`;
-const ORACLE_GRAALVM_REPO_EA_BUILDS = 'oracle-graalvm-dev-builds';
+const ORACLE_GRAALVM_REPO_EA_BUILDS = 'oracle-graalvm-ea-builds';
+const ORACLE_GRAALVM_REPO_EA_BUILDS_LATEST_SYMBOL = 'latest-ea';
 const GRAALVM_REPO_DEV_BUILDS = 'graalvm-ce-dev-builds';
 const GRAALVM_JDK_TAG_PREFIX = 'jdk-';
 const GRAALVM_TAG_PREFIX = 'vm-';
@@ -93864,7 +93866,10 @@ function setUpGraalVMJDK(javaVersionOrDev) {
         const toolName = determineToolName(javaVersion, false);
         let downloadName = toolName;
         let downloadUrl;
-        if (javaVersion.includes('.')) {
+        if (javaVersion.endsWith('-ea')) {
+            downloadUrl = yield findLatestEABuildDownloadUrl(javaVersion);
+        }
+        else if (javaVersion.includes('.')) {
             if (semver.valid(javaVersion)) {
                 const majorJavaVersion = semver.major(javaVersion);
                 const minorJavaVersion = semver.minor(javaVersion);
@@ -93880,9 +93885,6 @@ function setUpGraalVMJDK(javaVersionOrDev) {
                 throw new Error(`java-version set to '${javaVersion}'. Please make sure the java-version is set correctly. ${c.ERROR_HINT}`);
             }
         }
-        else if (javaVersion === '22-ea') {
-            downloadUrl = yield findLatestEABuildDownloadUrl(javaVersion);
-        }
         else {
             downloadUrl = `${GRAALVM_DL_BASE}/${javaVersion}/latest/${downloadName}${c.GRAALVM_FILE_EXTENSION}`;
         }
@@ -93893,18 +93895,38 @@ function setUpGraalVMJDK(javaVersionOrDev) {
 exports.setUpGraalVMJDK = setUpGraalVMJDK;
 function findLatestEABuildDownloadUrl(javaEaVersion) {
     return __awaiter(this, void 0, void 0, function* () {
-        const latestPrerelease = yield (0, utils_1.getLatestPrerelease)(ORACLE_GRAALVM_REPO_EA_BUILDS);
-        const expectedFileNamePrefix = 'graalvm-jdk-';
-        const expectedFileNameSuffix = `_${c.JDK_PLATFORM}-${c.JDK_ARCH}_bin${c.GRAALVM_FILE_EXTENSION}`;
-        for (const asset of latestPrerelease.assets) {
-            if (asset.name.startsWith(expectedFileNamePrefix) &&
-                asset.name.endsWith(expectedFileNameSuffix)) {
-                return asset.browser_download_url;
+        const filePath = `versions/${javaEaVersion}.json`;
+        let response;
+        try {
+            response = yield (0, utils_1.getContents)(ORACLE_GRAALVM_REPO_EA_BUILDS, filePath);
+        }
+        catch (error) {
+            throw new Error(`Unable to resolve download URL for '${javaEaVersion}'. Please make sure the java-version is set correctly. ${c.ERROR_HINT}`);
+        }
+        if (Array.isArray(response) ||
+            response.type !== 'file' ||
+            !response.content) {
+            throw new Error(`Unexpected response when resolving download URL for '${javaEaVersion}'. ${c.ERROR_REQUEST}`);
+        }
+        const versionData = JSON.parse(Buffer.from(response.content, 'base64').toString('utf-8'));
+        let latestVersion;
+        if (javaEaVersion === ORACLE_GRAALVM_REPO_EA_BUILDS_LATEST_SYMBOL) {
+            latestVersion = versionData;
+        }
+        else {
+            latestVersion = versionData.find(v => v.latest);
+            if (!latestVersion) {
+                throw new Error(`Unable to find latest version for '${javaEaVersion}'. ${c.ERROR_REQUEST}`);
             }
         }
-        throw new Error(`Could not find Oracle GraalVM build for ${javaEaVersion}. ${c.ERROR_HINT}`);
+        const file = latestVersion.files.find(f => f.arch === c.JDK_ARCH && f.platform === c.GRAALVM_PLATFORM);
+        if (!file || !file.filename.startsWith('graalvm-jdk-')) {
+            throw new Error(`Unable to find file metadata for '${javaEaVersion}'. ${c.ERROR_REQUEST}`);
+        }
+        return `${latestVersion.download_base_url}${file.filename}`;
     });
 }
+exports.findLatestEABuildDownloadUrl = findLatestEABuildDownloadUrl;
 function setUpGraalVMJDKCE(javaVersionOrDev) {
     return __awaiter(this, void 0, void 0, function* () {
         if (javaVersionOrDev === c.VERSION_DEV) {
@@ -94639,7 +94661,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.createPRComment = exports.isPREvent = exports.toSemVer = exports.calculateSHA256 = exports.downloadExtractAndCacheJDK = exports.downloadAndExtractJDK = exports.getMatchingTags = exports.getTaggedRelease = exports.getLatestRelease = exports.getLatestPrerelease = exports.exec = void 0;
+exports.createPRComment = exports.isPREvent = exports.toSemVer = exports.calculateSHA256 = exports.downloadExtractAndCacheJDK = exports.downloadAndExtractJDK = exports.getMatchingTags = exports.getTaggedRelease = exports.getContents = exports.getLatestRelease = exports.exec = void 0;
 const c = __importStar(__nccwpck_require__(9042));
 const core = __importStar(__nccwpck_require__(2186));
 const github = __importStar(__nccwpck_require__(5438));
@@ -94670,23 +94692,6 @@ function exec(commandLine, args, options) {
     });
 }
 exports.exec = exec;
-function getLatestPrerelease(repo) {
-    return __awaiter(this, void 0, void 0, function* () {
-        const githubToken = getGitHubToken();
-        const options = githubToken.length > 0 ? { auth: githubToken } : {};
-        const octokit = new GitHubDotCom(options);
-        const releases = (yield octokit.request('GET /repos/{owner}/{repo}/releases', {
-            owner: c.GRAALVM_GH_USER,
-            repo
-        })).data;
-        const firstPrerelease = releases.find(r => r.prerelease);
-        if (!firstPrerelease) {
-            throw new Error(`Unable to find latest prerelease in ${repo}`);
-        }
-        return firstPrerelease;
-    });
-}
-exports.getLatestPrerelease = getLatestPrerelease;
 function getLatestRelease(repo) {
     return __awaiter(this, void 0, void 0, function* () {
         const githubToken = getGitHubToken();
@@ -94699,6 +94704,19 @@ function getLatestRelease(repo) {
     });
 }
 exports.getLatestRelease = getLatestRelease;
+function getContents(repo, path) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const githubToken = getGitHubToken();
+        const options = githubToken.length > 0 ? { auth: githubToken } : {};
+        const octokit = new GitHubDotCom(options);
+        return (yield octokit.request('GET /repos/{owner}/{repo}/contents/{path}', {
+            owner: c.GRAALVM_GH_USER,
+            repo,
+            path
+        })).data;
+    });
+}
+exports.getContents = getContents;
 function getTaggedRelease(repo, tag) {
     return __awaiter(this, void 0, void 0, function* () {
         const githubToken = getGitHubToken();

src/constants.ts

@@ -40,6 +40,9 @@ export const GDS_GRAALVM_PRODUCT_ID = 'D53FAE8052773FFAE0530F15000AA6C6'
 export const ENV_GITHUB_EVENT_NAME = 'GITHUB_EVENT_NAME'
 export const EVENT_NAME_PULL_REQUEST = 'pull_request'
 
+export const ERROR_REQUEST =
+  'Please file an issue at: https://github.com/graalvm/setup-graalvm/issues.'
+
 export const ERROR_HINT =
   'If you think this is a mistake, please file an issue at: https://github.com/graalvm/setup-graalvm/issues.'
 
@@ -52,6 +55,22 @@ export type MatchingRefsResponse =
 export type ReleasesResponse =
   otypes.Endpoints['GET /repos/{owner}/{repo}/releases']['response']
 
+export type ContentsResponse =
+  otypes.Endpoints['GET /repos/{owner}/{repo}/contents/{path}']['response']
+
+export interface OracleGraalVMEAFile {
+  filename: string
+  arch: 'aarch64' | 'x64'
+  platform: 'darwin' | 'linux' | 'windows'
+}
+
+export interface OracleGraalVMEAVersion {
+  version: string
+  latest?: boolean
+  download_base_url: string
+  files: OracleGraalVMEAFile[]
+}
+
 function determineJDKArchitecture(): string {
   switch (process.arch) {
     case 'x64': {

src/graalvm.ts

@@ -3,11 +3,10 @@ import * as semver from 'semver'
 import {
   downloadAndExtractJDK,
   downloadExtractAndCacheJDK,
-  getLatestPrerelease,
+  getContents,
   getLatestRelease,
   getMatchingTags,
-  getTaggedRelease,
-  toSemVer
+  getTaggedRelease
 } from './utils'
 import {downloadGraalVMEELegacy} from './gds'
 import {downloadTool} from '@actions/tool-cache'
@@ -15,7 +14,8 @@ import {basename} from 'path'
 
 const GRAALVM_DL_BASE = 'https://download.oracle.com/graalvm'
 const GRAALVM_CE_DL_BASE = `https://github.com/graalvm/${c.GRAALVM_RELEASES_REPO}/releases/download`
-const ORACLE_GRAALVM_REPO_EA_BUILDS = 'oracle-graalvm-dev-builds'
+const ORACLE_GRAALVM_REPO_EA_BUILDS = 'oracle-graalvm-ea-builds'
+const ORACLE_GRAALVM_REPO_EA_BUILDS_LATEST_SYMBOL = 'latest-ea'
 const GRAALVM_REPO_DEV_BUILDS = 'graalvm-ce-dev-builds'
 const GRAALVM_JDK_TAG_PREFIX = 'jdk-'
 const GRAALVM_TAG_PREFIX = 'vm-'
@@ -32,7 +32,9 @@ export async function setUpGraalVMJDK(
   const toolName = determineToolName(javaVersion, false)
   let downloadName = toolName
   let downloadUrl: string
-  if (javaVersion.includes('.')) {
+  if (javaVersion.endsWith('-ea')) {
+    downloadUrl = await findLatestEABuildDownloadUrl(javaVersion)
+  } else if (javaVersion.includes('.')) {
     if (semver.valid(javaVersion)) {
       const majorJavaVersion = semver.major(javaVersion)
       const minorJavaVersion = semver.minor(javaVersion)
@@ -48,8 +50,6 @@ export async function setUpGraalVMJDK(
         `java-version set to '${javaVersion}'. Please make sure the java-version is set correctly. ${c.ERROR_HINT}`
       )
     }
-  } else if (javaVersion === '22-ea') {
-    downloadUrl = await findLatestEABuildDownloadUrl(javaVersion)
   } else {
     downloadUrl = `${GRAALVM_DL_BASE}/${javaVersion}/latest/${downloadName}${c.GRAALVM_FILE_EXTENSION}`
   }
@@ -57,25 +57,52 @@ export async function setUpGraalVMJDK(
   return downloadExtractAndCacheJDK(downloader, toolName, javaVersion)
 }
 
-async function findLatestEABuildDownloadUrl(
+export async function findLatestEABuildDownloadUrl(
   javaEaVersion: string
 ): Promise<string> {
-  const latestPrerelease = await getLatestPrerelease(
-    ORACLE_GRAALVM_REPO_EA_BUILDS
+  const filePath = `versions/${javaEaVersion}.json`
+  let response
+  try {
+    response = await getContents(ORACLE_GRAALVM_REPO_EA_BUILDS, filePath)
+  } catch (error) {
+    throw new Error(
+      `Unable to resolve download URL for '${javaEaVersion}'. Please make sure the java-version is set correctly. ${c.ERROR_HINT}`
+    )
+  }
+  if (
+    Array.isArray(response) ||
+    response.type !== 'file' ||
+    !response.content
+  ) {
+    throw new Error(
+      `Unexpected response when resolving download URL for '${javaEaVersion}'. ${c.ERROR_REQUEST}`
+    )
+  }
+  const versionData = JSON.parse(
+    Buffer.from(response.content, 'base64').toString('utf-8')
   )
-  const expectedFileNamePrefix = 'graalvm-jdk-'
-  const expectedFileNameSuffix = `_${c.JDK_PLATFORM}-${c.JDK_ARCH}_bin${c.GRAALVM_FILE_EXTENSION}`
-  for (const asset of latestPrerelease.assets) {
-    if (
-      asset.name.startsWith(expectedFileNamePrefix) &&
-      asset.name.endsWith(expectedFileNameSuffix)
-    ) {
-      return asset.browser_download_url
+  let latestVersion
+  if (javaEaVersion === ORACLE_GRAALVM_REPO_EA_BUILDS_LATEST_SYMBOL) {
+    latestVersion = versionData as c.OracleGraalVMEAVersion
+  } else {
+    latestVersion = (versionData as c.OracleGraalVMEAVersion[]).find(
+      v => v.latest
+    )
+    if (!latestVersion) {
+      throw new Error(
+        `Unable to find latest version for '${javaEaVersion}'. ${c.ERROR_REQUEST}`
+      )
     }
   }
-  throw new Error(
-    `Could not find Oracle GraalVM build for ${javaEaVersion}. ${c.ERROR_HINT}`
+  const file = latestVersion.files.find(
+    f => f.arch === c.JDK_ARCH && f.platform === c.GRAALVM_PLATFORM
   )
+  if (!file || !file.filename.startsWith('graalvm-jdk-')) {
+    throw new Error(
+      `Unable to find file metadata for '${javaEaVersion}'. ${c.ERROR_REQUEST}`
+    )
+  }
+  return `${latestVersion.download_base_url}${file.filename}`
 }
 
 export async function setUpGraalVMJDKCE(

src/utils.ts

@@ -34,25 +34,6 @@ export async function exec(
   }
 }
 
-export async function getLatestPrerelease(
-  repo: string
-): Promise<c.ReleasesResponse['data'][number]> {
-  const githubToken = getGitHubToken()
-  const options = githubToken.length > 0 ? {auth: githubToken} : {}
-  const octokit = new GitHubDotCom(options)
-  const releases: c.ReleasesResponse['data'] = (
-    await octokit.request('GET /repos/{owner}/{repo}/releases', {
-      owner: c.GRAALVM_GH_USER,
-      repo
-    })
-  ).data
-  const firstPrerelease = releases.find(r => r.prerelease)
-  if (!firstPrerelease) {
-    throw new Error(`Unable to find latest prerelease in ${repo}`)
-  }
-  return firstPrerelease
-}
-
 export async function getLatestRelease(
   repo: string
 ): Promise<c.LatestReleaseResponse['data']> {
@@ -67,6 +48,22 @@ export async function getLatestRelease(
   ).data
 }
 
+export async function getContents(
+  repo: string,
+  path: string
+): Promise<c.ContentsResponse['data']> {
+  const githubToken = getGitHubToken()
+  const options = githubToken.length > 0 ? {auth: githubToken} : {}
+  const octokit = new GitHubDotCom(options)
+  return (
+    await octokit.request('GET /repos/{owner}/{repo}/contents/{path}', {
+      owner: c.GRAALVM_GH_USER,
+      repo,
+      path
+    })
+  ).data
+}
+
 export async function getTaggedRelease(
   repo: string,
   tag: string