Add support for Oracle GraalVM (#501)

* Add support for Oracle GraalVM

* Add support for EA builds of Oracle GraalVM

src/distributions/distribution-factory.ts

@@ -11,6 +11,7 @@ import {CorrettoDistribution} from './corretto/installer';
 import {OracleDistribution} from './oracle/installer';
 import {DragonwellDistribution} from './dragonwell/installer';
 import {SapMachineDistribution} from './sapmachine/installer';
+import {GraalVMDistribution} from './graalvm/installer';
 
 enum JavaDistribution {
   Adopt = 'adopt',
@@ -25,7 +26,8 @@ enum JavaDistribution {
   Corretto = 'corretto',
   Oracle = 'oracle',
   Dragonwell = 'dragonwell',
-  SapMachine = 'sapmachine'
+  SapMachine = 'sapmachine',
+  GraalVM = 'graalvm'
 }
 
 export function getJavaDistribution(
@@ -68,6 +70,8 @@ export function getJavaDistribution(
       return new DragonwellDistribution(installerOptions);
     case JavaDistribution.SapMachine:
       return new SapMachineDistribution(installerOptions);
+    case JavaDistribution.GraalVM:
+      return new GraalVMDistribution(installerOptions);
     default:
       return null;
   }

src/distributions/graalvm/installer.ts

@@ -0,0 +1,173 @@
+import * as core from '@actions/core';
+import * as tc from '@actions/tool-cache';
+
+import fs from 'fs';
+import path from 'path';
+
+import {JavaBase} from '../base-installer';
+import {
+  JavaDownloadRelease,
+  JavaInstallerOptions,
+  JavaInstallerResults
+} from '../base-models';
+import {
+  extractJdkFile,
+  getDownloadArchiveExtension,
+  getGitHubHttpHeaders
+} from '../../util';
+import {HttpCodes} from '@actions/http-client';
+import {GraalVMEAVersion} from './models';
+
+const GRAALVM_DL_BASE = 'https://download.oracle.com/graalvm';
+const IS_WINDOWS = process.platform === 'win32';
+const GRAALVM_PLATFORM = IS_WINDOWS ? 'windows' : process.platform;
+
+export class GraalVMDistribution extends JavaBase {
+  constructor(installerOptions: JavaInstallerOptions) {
+    super('GraalVM', installerOptions);
+  }
+
+  protected async downloadTool(
+    javaRelease: JavaDownloadRelease
+  ): Promise<JavaInstallerResults> {
+    core.info(
+      `Downloading Java ${javaRelease.version} (${this.distribution}) from ${javaRelease.url} ...`
+    );
+    const javaArchivePath = await tc.downloadTool(javaRelease.url);
+
+    core.info(`Extracting Java archive...`);
+    const extension = getDownloadArchiveExtension();
+
+    const extractedJavaPath = await extractJdkFile(javaArchivePath, extension);
+
+    const archiveName = fs.readdirSync(extractedJavaPath)[0];
+    const archivePath = path.join(extractedJavaPath, archiveName);
+    const version = this.getToolcacheVersionName(javaRelease.version);
+
+    const javaPath = await tc.cacheDir(
+      archivePath,
+      this.toolcacheFolderName,
+      version,
+      this.architecture
+    );
+
+    return {version: javaRelease.version, path: javaPath};
+  }
+
+  protected async findPackageForDownload(
+    range: string
+  ): Promise<JavaDownloadRelease> {
+    const arch = this.distributionArchitecture();
+    if (arch !== 'x64' && arch !== 'aarch64') {
+      throw new Error(`Unsupported architecture: ${this.architecture}`);
+    }
+
+    if (!this.stable) {
+      return this.findEABuildDownloadUrl(`${range}-ea`);
+    }
+
+    if (this.packageType !== 'jdk') {
+      throw new Error('GraalVM provides only the `jdk` package type');
+    }
+
+    const platform = this.getPlatform();
+    const extension = getDownloadArchiveExtension();
+    let major;
+    let fileUrl;
+    if (range.includes('.')) {
+      major = range.split('.')[0];
+      fileUrl = `${GRAALVM_DL_BASE}/${major}/archive/graalvm-jdk-${range}_${platform}-${arch}_bin.${extension}`;
+    } else {
+      major = range;
+      fileUrl = `${GRAALVM_DL_BASE}/${range}/latest/graalvm-jdk-${range}_${platform}-${arch}_bin.${extension}`;
+    }
+
+    if (parseInt(major) < 17) {
+      throw new Error('GraalVM is only supported for JDK 17 and later');
+    }
+
+    const response = await this.http.head(fileUrl);
+
+    if (response.message.statusCode === HttpCodes.NotFound) {
+      throw new Error(`Could not find GraalVM for SemVer ${range}`);
+    }
+
+    if (response.message.statusCode !== HttpCodes.OK) {
+      throw new Error(
+        `Http request for GraalVM failed with status code: ${response.message.statusCode}`
+      );
+    }
+
+    return {url: fileUrl, version: range};
+  }
+
+  private async findEABuildDownloadUrl(
+    javaEaVersion: string
+  ): Promise<JavaDownloadRelease> {
+    const versions = await this.fetchEAJson(javaEaVersion);
+    const latestVersion = versions.find(v => v.latest);
+    if (!latestVersion) {
+      throw new Error(`Unable to find latest version for '${javaEaVersion}'`);
+    }
+    const arch = this.distributionArchitecture();
+    const file = latestVersion.files.find(
+      f => f.arch === arch && f.platform === GRAALVM_PLATFORM
+    );
+    if (!file || !file.filename.startsWith('graalvm-jdk-')) {
+      throw new Error(`Unable to find file metadata for '${javaEaVersion}'`);
+    }
+    return {
+      url: `${latestVersion.download_base_url}${file.filename}`,
+      version: latestVersion.version
+    };
+  }
+
+  private async fetchEAJson(
+    javaEaVersion: string
+  ): Promise<GraalVMEAVersion[]> {
+    const owner = 'graalvm';
+    const repository = 'oracle-graalvm-ea-builds';
+    const branch = 'main';
+    const filePath = `versions/${javaEaVersion}.json`;
+
+    const url = `https://api.github.com/repos/${owner}/${repository}/contents/${filePath}?ref=${branch}`;
+
+    const headers = getGitHubHttpHeaders();
+
+    core.debug(
+      `Trying to fetch available version info for GraalVM EA builds from '${url}'`
+    );
+    let fetchedJson;
+    try {
+      fetchedJson = (await this.http.getJson<GraalVMEAVersion[]>(url, headers))
+        .result;
+    } catch (err) {
+      throw Error(
+        `Fetching version info for GraalVM EA builds from '${url}' failed with the error: ${
+          (err as Error).message
+        }`
+      );
+    }
+    if (fetchedJson === null) {
+      throw Error(
+        `No GraalVM EA build found. Are you sure java-version: '${javaEaVersion}' is correct?`
+      );
+    }
+    return fetchedJson;
+  }
+
+  public getPlatform(platform: NodeJS.Platform = process.platform): OsVersions {
+    switch (platform) {
+      case 'darwin':
+        return 'macos';
+      case 'win32':
+        return 'windows';
+      case 'linux':
+        return 'linux';
+      default:
+        throw new Error(
+          `Platform '${platform}' is not supported. Supported platforms: 'linux', 'macos', 'windows'`
+        );
+    }
+  }
+}

src/distributions/graalvm/models.ts

@@ -0,0 +1,14 @@
+export type OsVersions = 'linux' | 'macos' | 'windows';
+
+export interface GraalVMEAFile {
+  filename: string;
+  arch: 'aarch64' | 'x64';
+  platform: 'darwin' | 'linux' | 'windows';
+}
+
+export interface GraalVMEAVersion {
+  version: string;
+  latest?: boolean;
+  download_base_url: string;
+  files: GraalVMEAFile[];
+}