Initial attempt

src/installer.ts

@@ -0,0 +1,206 @@
+let tempDirectory = process.env['RUNNER_TEMPDIRECTORY'] || '';
+
+import * as core from '@actions/core';
+import * as io from '@actions/io';
+import * as exec from '@actions/exec';
+import * as tc from '@actions/tool-cache';
+import * as fs from 'fs';
+import * as path from 'path';
+
+if (!tempDirectory) {
+  let baseLocation;
+  if (process.platform === 'win32') {
+    // On windows use the USERPROFILE env variable
+    baseLocation = process.env['USERPROFILE'] || 'C:\\';
+  } else {
+    if (process.platform === 'darwin') {
+      baseLocation = '/Users';
+    } else {
+      baseLocation = '/home';
+    }
+  }
+  tempDirectory = path.join(baseLocation, 'actions', 'temp');
+}
+
+const IS_WINDOWS = process.platform === 'win32';
+
+export async function getJava(
+  versionSpec: string,
+  arch: string,
+  jdkFile: string
+): Promise<void> {
+  let toolPath = tc.find('Java', versionSpec);
+
+  if (toolPath) {
+    core.debug(`Tool found in cache ${toolPath}`);
+  } else {
+    core.debug('Retrieving Jdk from local path');
+    const compressedFileExtension = getFileEnding(jdkFile);
+    let tempDir: string = path.join(
+      tempDirectory,
+      'temp_' + Math.floor(Math.random() * 2000000000)
+    );
+    await unzipJavaDownload(jdkFile, compressedFileExtension, tempDir);
+    toolPath = await tc.cacheDir(tempDir, 'Java', versionSpec, arch);
+  }
+
+  let extendedJavaHome = 'JAVA_HOME_' + versionSpec + '_' + arch;
+  core.exportVariable('JAVA_HOME', toolPath);
+  core.exportVariable(extendedJavaHome, toolPath);
+  core.addPath(path.join(toolPath, 'bin'));
+}
+
+function getFileEnding(file: string): string {
+  let fileEnding = '';
+
+  if (file.endsWith('.tar')) {
+    fileEnding = '.tar';
+  } else if (file.endsWith('.tar.gz')) {
+    fileEnding = '.tar.gz';
+  } else if (file.endsWith('.zip')) {
+    fileEnding = '.zip';
+  } else if (file.endsWith('.7z')) {
+    fileEnding = '.7z';
+  } else {
+    throw new Error(`${file} has an unsupported file extension`);
+  }
+
+  return fileEnding;
+}
+
+async function getSevenZipLocation(): Promise<string> {
+  if (IS_WINDOWS) {
+    return path.join(__dirname, '7zip/7z.exe');
+  } else {
+    return await io.which('7z', true);
+  }
+}
+
+function isTar(file: string): boolean {
+  const name = file.toLowerCase();
+  // standard gnu-tar extension formats with recognized auto compression formats
+  // https://www.gnu.org/software/tar/manual/html_section/tar_69.html
+  return (
+    name.endsWith('.tar') || // no compression
+    name.endsWith('.tar.gz') || // gzip
+    name.endsWith('.tgz') || // gzip
+    name.endsWith('.taz') || // gzip
+    name.endsWith('.tar.z') || // compress
+    name.endsWith('.tar.bz2') || // bzip2
+    name.endsWith('.tz2') || // bzip2
+    name.endsWith('.tbz2') || // bzip2
+    name.endsWith('.tbz') || // bzip2
+    name.endsWith('.tar.lz') || // lzip
+    name.endsWith('.tar.lzma') || // lzma
+    name.endsWith('.tlz') || // lzma
+    name.endsWith('.tar.lzo') || // lzop
+    name.endsWith('.tar.xz') || // xz
+    name.endsWith('.txz')
+  ); // xz
+}
+
+async function sevenZipExtract(file: string, destinationFolder: string) {
+  console.log(`Using 7zip to extract ${file}`);
+  await tc.extract7z(file, destinationFolder, await getSevenZipLocation());
+}
+
+async function extractFiles(
+  file: string,
+  fileEnding: string,
+  destinationFolder: string
+): Promise<void> {
+  const stats = fs.statSync(file);
+  if (!stats) {
+    throw new Error(`Failed to extract ${file} - it doesn't exist`);
+  } else if (stats.isDirectory()) {
+    throw new Error(`Failed to extract ${file} - it is a directory`);
+  }
+
+  if (IS_WINDOWS) {
+    if ('.tar' === fileEnding) {
+      // a simple tar
+      await sevenZipExtract(file, destinationFolder);
+    } else if (isTar(file)) {
+      // a compressed tar, e.g. 'fullFilePath/test.tar.gz'
+      // e.g. 'fullFilePath/test.tar.gz' --> 'test.tar.gz'
+      const shortFileName = path.basename(file);
+      // e.g. 'destinationFolder/_test.tar.gz_'
+      const tempFolder = path.normalize(
+        destinationFolder + path.sep + '_' + shortFileName + '_'
+      );
+
+      // 0 create temp folder
+      await io.mkdirP(tempFolder);
+
+      // 1 extract compressed tar
+      await sevenZipExtract(file, tempFolder);
+      const tempTar = tempFolder + path.sep + fs.readdirSync(tempFolder)[0]; // should be only one
+
+      // 2 expand extracted tar
+      await sevenZipExtract(tempTar, destinationFolder);
+
+      // 3 cleanup temp folder
+      await io.rmRF(tempFolder);
+    } else {
+      // use sevenZip
+      await sevenZipExtract(file, destinationFolder);
+    }
+  } else {
+    // not windows
+    if ('.tar' === fileEnding || '.tar.gz' === fileEnding) {
+      await tc.extractTar(file, destinationFolder);
+    } else if ('.zip' === fileEnding) {
+      await tc.extractZip(file, destinationFolder);
+    } else {
+      // fall through and use sevenZip
+      await sevenZipExtract(file, destinationFolder);
+    }
+  }
+}
+
+// This method recursively finds all .pack files under fsPath and unpacks them with the unpack200 tool
+async function unpackJars(fsPath: string, javaBinPath: string) {
+  if (fs.existsSync(fsPath)) {
+    if (fs.lstatSync(fsPath).isDirectory()) {
+      for (const file in fs.readdirSync(fsPath)) {
+        const curPath = path.join(fsPath, file);
+        await unpackJars(curPath, javaBinPath);
+      }
+    } else if (path.extname(fsPath).toLowerCase() === '.pack') {
+      // Unpack the pack file synchonously
+      const p = path.parse(fsPath);
+      const toolName = process.platform.match(/^win/i)
+        ? 'unpack200.exe'
+        : 'unpack200';
+      const args = process.platform.match(/^win/i) ? '-r -v -l ""' : '';
+      const name = path.join(p.dir, p.name);
+      await exec.exec(`"${path.join(javaBinPath, toolName)}"`, [
+        `${args} "${name}.pack" "${name}.jar"`
+      ]);
+    }
+  }
+}
+
+async function unzipJavaDownload(
+  repoRoot: string,
+  fileEnding: string,
+  destinationFolder: string
+): Promise<string> {
+  let initialDirectoriesList: string[];
+  let finalDirectoriesList: string[];
+  let jdkDirectory: string;
+
+  // Create the destination folder if it doesn't exist
+  await io.mkdirP(destinationFolder);
+
+  const jdkFile = path.normalize(repoRoot);
+  const stats = fs.statSync(jdkFile);
+  if (stats.isFile()) {
+    await extractFiles(jdkFile, fileEnding, destinationFolder);
+    jdkDirectory = fs.readdirSync(tempDirectory)[0];
+    await unpackJars(jdkDirectory, path.join(jdkDirectory, 'bin'));
+    return jdkDirectory;
+  } else {
+    throw new Error(`Jdk argument ${jdkFile} is not a file`);
+  }
+}

src/setup-java.ts

@@ -1,8 +1,16 @@
 import * as core from '@actions/core';
+import * as installer from './installer';
 
 async function run() {
-  const myInput = core.getInput('myInput');
-  core.debug(`Hello ${myInput}`);
+  try {
+    const version = core.getInput('version', {required: true});
+    const arch = core.getInput('architecture', {required: true});
+    const jdkFile = core.getInput('jdkFile', {required: true});
+
+    await installer.getJava(version, arch, jdkFile);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
 }
 
 run();