Add support for java.version file (#426)

src/constants.ts

@@ -1,5 +1,6 @@
 export const MACOS_JAVA_CONTENT_POSTFIX = 'Contents/Home';
 export const INPUT_JAVA_VERSION = 'java-version';
+export const INPUT_JAVA_VERSION_FILE = 'java-version-file';
 export const INPUT_ARCHITECTURE = 'architecture';
 export const INPUT_JAVA_PACKAGE = 'java-package';
 export const INPUT_DISTRIBUTION = 'distribution';
@@ -26,3 +27,5 @@ export const MVN_SETTINGS_FILE = 'settings.xml';
 export const MVN_TOOLCHAINS_FILE = 'toolchains.xml';
 export const INPUT_MVN_TOOLCHAIN_ID = 'mvn-toolchain-id';
 export const INPUT_MVN_TOOLCHAIN_VENDOR = 'mvn-toolchain-vendor';
+
+export const DISTRIBUTIONS_ONLY_MAJOR_VERSION = ['corretto'];

src/distributions/microsoft/installer.ts

@@ -60,7 +60,7 @@ export class MicrosoftDistributions extends JavaBase {
 
     if (!foundRelease) {
       throw new Error(
-        `Could not find satisfied version for SemVer ${range}. ${manifest
+        `Could not find satisfied version for SemVer ${range}.\nAvailable versions: ${manifest
           .map(item => item.version)
           .join(', ')}`
       );

src/setup-java.ts

@@ -1,6 +1,7 @@
+import fs from 'fs';
 import * as core from '@actions/core';
 import * as auth from './auth';
-import { getBooleanInput, isCacheFeatureAvailable } from './util';
+import { getBooleanInput, isCacheFeatureAvailable, getVersionFromFileContent } from './util';
 import * as toolchains from './toolchains';
 import * as constants from './constants';
 import { restore } from './cache';
@@ -10,8 +11,9 @@ import { JavaInstallerOptions } from './distributions/base-models';
 
 async function run() {
   try {
-    const versions = core.getMultilineInput(constants.INPUT_JAVA_VERSION, { required: true });
+    const versions = core.getMultilineInput(constants.INPUT_JAVA_VERSION);
     const distributionName = core.getInput(constants.INPUT_DISTRIBUTION, { required: true });
+    const versionFile = core.getInput(constants.INPUT_JAVA_VERSION_FILE);
     const architecture = core.getInput(constants.INPUT_ARCHITECTURE);
     const packageType = core.getInput(constants.INPUT_JAVA_PACKAGE);
     const jdkFile = core.getInput(constants.INPUT_JDK_FILE);
@@ -19,38 +21,44 @@ async function run() {
     const checkLatest = getBooleanInput(constants.INPUT_CHECK_LATEST, false);
     let toolchainIds = core.getMultilineInput(constants.INPUT_MVN_TOOLCHAIN_ID);
 
+    core.startGroup('Installed distributions');
+
     if (versions.length !== toolchainIds.length) {
       toolchainIds = [];
     }
 
-    core.startGroup('Installed distributions');
-    for (const [index, version] of versions.entries()) {
-      const installerOptions: JavaInstallerOptions = {
-        architecture,
-        packageType,
-        version,
-        checkLatest
-      };
+    if (!versions.length && !versionFile) {
+      throw new Error('java-version or java-version-file input expected');
+    }
 
-      const distribution = getJavaDistribution(distributionName, installerOptions, jdkFile);
-      if (!distribution) {
-        throw new Error(`No supported distribution was found for input ${distributionName}`);
+    const installerInputsOptions: installerInputsOptions = {
+      architecture,
+      packageType,
+      checkLatest,
+      distributionName,
+      jdkFile,
+      toolchainIds
+    };
+
+    if (!versions.length) {
+      core.debug('java-version input is empty, looking for java-version-file input');
+      const content = fs
+        .readFileSync(versionFile)
+        .toString()
+        .trim();
+
+      const version = getVersionFromFileContent(content, distributionName);
+      core.debug(`Parsed version from file '${version}'`);
+
+      if (!version) {
+        throw new Error(`No supported version was found in file ${versionFile}`);
       }
 
-      const result = await distribution.setupJava();
-      await toolchains.configureToolchains(
-        version,
-        distributionName,
-        result.path,
-        toolchainIds[index]
-      );
+      await installVersion(version, installerInputsOptions);
+    }
 
-      core.info('');
-      core.info('Java configuration:');
-      core.info(`  Distribution: ${distributionName}`);
-      core.info(`  Version: ${result.version}`);
-      core.info(`  Path: ${result.path}`);
-      core.info('');
+    for (const [index, version] of versions.entries()) {
+      await installVersion(version, installerInputsOptions, index);
     }
     core.endGroup();
     const matchersPath = path.join(__dirname, '..', '..', '.github');
@@ -66,3 +74,50 @@ async function run() {
 }
 
 run();
+
+async function installVersion(version: string, options: installerInputsOptions, toolchainId = 0) {
+  const {
+    distributionName,
+    jdkFile,
+    architecture,
+    packageType,
+    checkLatest,
+    toolchainIds
+  } = options;
+
+  const installerOptions: JavaInstallerOptions = {
+    architecture,
+    packageType,
+    checkLatest,
+    version
+  };
+
+  const distribution = getJavaDistribution(distributionName, installerOptions, jdkFile);
+  if (!distribution) {
+    throw new Error(`No supported distribution was found for input ${distributionName}`);
+  }
+
+  const result = await distribution.setupJava();
+  await toolchains.configureToolchains(
+    version,
+    distributionName,
+    result.path,
+    toolchainIds[toolchainId]
+  );
+
+  core.info('');
+  core.info('Java configuration:');
+  core.info(`  Distribution: ${distributionName}`);
+  core.info(`  Version: ${result.version}`);
+  core.info(`  Path: ${result.path}`);
+  core.info('');
+}
+
+interface installerInputsOptions {
+  architecture: string;
+  packageType: string;
+  checkLatest: boolean;
+  distributionName: string;
+  jdkFile: string;
+  toolchainIds: Array<string>;
+}

src/util.ts

@@ -6,7 +6,7 @@ import * as cache from '@actions/cache';
 import * as core from '@actions/core';
 
 import * as tc from '@actions/tool-cache';
-import { INPUT_JOB_STATUS } from './constants';
+import { INPUT_JOB_STATUS, DISTRIBUTIONS_ONLY_MAJOR_VERSION } from './constants';
 
 export function getTempDir() {
   let tempDirectory = process.env['RUNNER_TEMP'] || os.tmpdir();
@@ -99,3 +99,41 @@ export function isCacheFeatureAvailable(): boolean {
 
   return true;
 }
+
+export function getVersionFromFileContent(
+  content: string,
+  distributionName: string
+): string | null {
+  const javaVersionRegExp = /(?<version>(?<=(^|\s|\-))(\d+\S*))(\s|$)/;
+  const fileContent = content.match(javaVersionRegExp)?.groups?.version
+    ? (content.match(javaVersionRegExp)?.groups?.version as string)
+    : '';
+  if (!fileContent) {
+    return null;
+  }
+
+  core.debug(`Version from file '${fileContent}'`);
+
+  const tentativeVersion = avoidOldNotation(fileContent);
+  const rawVersion = tentativeVersion.split('-')[0];
+
+  let version = semver.validRange(rawVersion) ? tentativeVersion : semver.coerce(tentativeVersion);
+
+  core.debug(`Range version from file is '${version}'`);
+
+  if (!version) {
+    return null;
+  }
+
+  if (DISTRIBUTIONS_ONLY_MAJOR_VERSION.includes(distributionName)) {
+    const coerceVersion = semver.coerce(version) ?? version;
+    version = semver.major(coerceVersion).toString();
+  }
+
+  return version.toString();
+}
+
+// By convention, action expects version 8 in the format `8.*` instead of `1.8`
+function avoidOldNotation(content: string): string {
+  return content.startsWith('1.') ? content.substring(2) : content;
+}