Prepare for deprecation of GraalVM Updater.

src/gu.ts

@@ -1,6 +1,9 @@
+import * as c from './constants'
+import * as core from '@actions/core'
 import {GRAALVM_PLATFORM} from './constants'
 import {exec} from './utils'
 import {join} from 'path'
+import {gte as semverGte, valid as semverValid} from 'semver'
 
 const BASE_FLAGS = ['--non-interactive', 'install', '--no-progress']
 const COMPONENT_TO_POST_INSTALL_HOOK = new Map<string, Map<string, string>>([
@@ -22,6 +25,35 @@ const COMPONENT_TO_POST_INSTALL_HOOK = new Map<string, Map<string, string>>([
 ])
 
 export async function setUpGUComponents(
+  javaVersion: string,
+  graalVMVersion: string,
+  graalVMHome: string,
+  components: string[],
+  gdsToken: string
+): Promise<void> {
+  if (components.length == 0) {
+    return // nothing to do
+  }
+  if (
+    graalVMVersion === c.VERSION_DEV ||
+    javaVersion === c.VERSION_DEV ||
+    (semverValid(javaVersion) && semverGte(javaVersion, '21'))
+  ) {
+    core.warning(
+      `Unable to install component(s): '${components.join(
+        ','
+      )}'. The latest GraalVM dev builds and the upcoming GraalVM for JDK 21 no longer include the GraalVM Updater: https://github.com/oracle/graal/issues/6855`
+    )
+  } else if (graalVMVersion.startsWith(c.MANDREL_NAMESPACE)) {
+    core.warning(
+      `Mandrel does not support GraalVM component(s): '${components.join(',')}'`
+    )
+  } else {
+    await installGUComponents(gdsToken, graalVMHome, components)
+  }
+}
+
+async function installGUComponents(
   gdsToken: string,
   graalVMHome: string,
   components: string[]