Introduce check-for-updates feature.

src/constants.ts

@@ -7,6 +7,7 @@ export const INPUT_COMPONENTS = 'components'
 export const INPUT_GITHUB_TOKEN = 'github-token'
 export const INPUT_SET_JAVA_HOME = 'set-java-home'
 export const INPUT_CACHE = 'cache'
+export const INPUT_CHECK_FOR_UPDATES = 'check-for-updates'
 export const INPUT_NI_MUSL = 'native-image-musl'
 
 export const IS_LINUX = process.platform === 'linux'

src/features.ts

@@ -1,14 +1,42 @@
+import * as c from './constants'
 import * as core from '@actions/core'
 import * as tc from '@actions/tool-cache'
-import {IS_LINUX} from './constants'
-import {exec} from './utils'
+import {exec, toSemVer} from './utils'
 import {join} from 'path'
+import {lt, major, minor, valid} from 'semver'
+import {getLatestReleaseVersion} from './graalvm'
 
 const MUSL_NAME = 'x86_64-linux-musl-native'
 const MUSL_VERSION = '10.2.1'
 
+export async function checkForUpdates(
+  graalVMVersion: string,
+  javaVersion: string
+): Promise<void> {
+  if (graalVMVersion === '22.3.0' && javaVersion === '11') {
+    core.notice(
+      'Please consider upgrading your project to Java 17+. The GraalVM 22.3.0 release is the last to support JDK11: https://github.com/oracle/graal/issues/5063'
+    )
+    return
+  }
+  const latestGraalVMVersion = await getLatestReleaseVersion()
+  const selectedVersion = toSemVer(graalVMVersion)
+  const latestVersion = toSemVer(latestGraalVMVersion)
+  if (
+    valid(selectedVersion) &&
+    valid(latestVersion) &&
+    lt(selectedVersion, latestVersion)
+  ) {
+    core.notice(
+      `A new GraalVM release is available! Please consider upgrading to GraalVM ${latestGraalVMVersion}. Release notes: https://www.graalvm.org/release-notes/${major(
+        latestVersion
+      )}_${minor(latestVersion)}/`
+    )
+  }
+}
+
 export async function setUpNativeImageMusl(): Promise<void> {
-  if (!IS_LINUX) {
+  if (!c.IS_LINUX) {
     core.warning('musl is only supported on Linux')
     return
   }

src/graalvm.ts

@@ -20,14 +20,15 @@ export async function setUpGraalVMLatest(
   if (gdsToken.length > 0) {
     return setUpGraalVMRelease(gdsToken, c.VERSION_LATEST, javaVersion)
   }
+  const latestReleaseVersion = await getLatestReleaseVersion()
+  return setUpGraalVMRelease(gdsToken, latestReleaseVersion, javaVersion)
+}
+
+export async function getLatestReleaseVersion(): Promise<string> {
   const latestRelease = await getLatestRelease(GRAALVM_REPO_RELEASES)
   const tag_name = latestRelease.tag_name
   if (tag_name.startsWith(GRAALVM_TAG_PREFIX)) {
-    const latestVersion = tag_name.substring(
-      GRAALVM_TAG_PREFIX.length,
-      tag_name.length
-    )
-    return setUpGraalVMRelease(gdsToken, latestVersion, javaVersion)
+    return tag_name.substring(GRAALVM_TAG_PREFIX.length, tag_name.length)
   }
   throw new Error(`Could not find latest GraalVM release: ${tag_name}`)
 }

src/main.ts

@@ -7,7 +7,7 @@ import {restore} from './cache'
 import {setUpDependencies} from './dependencies'
 import {setUpGUComponents} from './gu'
 import {setUpMandrel} from './mandrel'
-import {setUpNativeImageMusl} from './features'
+import {checkForUpdates, setUpNativeImageMusl} from './features'
 import {setUpWindowsEnvironment} from './msvc'
 
 async function run(): Promise<void> {
@@ -20,6 +20,8 @@ async function run(): Promise<void> {
       componentsString.length > 0 ? componentsString.split(',') : []
     const setJavaHome = core.getInput(c.INPUT_SET_JAVA_HOME) === 'true'
     const cache = core.getInput(c.INPUT_CACHE)
+    const enableCheckForUpdates =
+      core.getInput(c.INPUT_CHECK_FOR_UPDATES) === 'true'
     const enableNativeImageMusl = core.getInput(c.INPUT_NI_MUSL) === 'true'
 
     if (c.IS_WINDOWS) {
@@ -43,6 +45,9 @@ async function run(): Promise<void> {
         if (graalvmVersion.startsWith(c.MANDREL_NAMESPACE)) {
           graalVMHome = await setUpMandrel(graalvmVersion, javaVersion)
         } else {
+          if (enableCheckForUpdates) {
+            await checkForUpdates(graalvmVersion, javaVersion)
+          }
           graalVMHome = await graalvm.setUpGraalVMRelease(
             gdsToken,
             graalvmVersion,

src/utils.ts

@@ -105,7 +105,7 @@ function findJavaHomeInSubfolder(searchPath: string): string {
  * semver.org versions (e.g., `22.0.0-2`), which is needed because
  * @actions/tool-cache uses `semver` to validate versions.
  */
-function toSemVer(version: string): string {
+export function toSemVer(version: string): string {
   const parts = version.split('.')
   const major = parts[0]
   const minor = parts.length > 1 ? parts[1] : '0'