gemini-code-assist[bot] commented on code in PR #38974:
URL: https://github.com/apache/beam/pull/38974#discussion_r3429875782


##########
buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy:
##########
@@ -507,6 +507,16 @@ class BeamModulePlugin implements Plugin<Project> {
 
     project.ext.mavenGroupId = 'org.apache.beam'
 
+    if (!project.hasProperty('java17Home') && 
System.getenv('JAVA_HOME_17_X64')) {
+      project.ext.java17Home = System.getenv('JAVA_HOME_17_X64')
+    }
+    if (!project.hasProperty('java11Home') && 
System.getenv('JAVA_HOME_11_X64')) {
+      project.ext.java11Home = System.getenv('JAVA_HOME_11_X64')
+    }
+    if (!project.hasProperty('java21Home') && 
System.getenv('JAVA_HOME_21_X64')) {
+      project.ext.java21Home = System.getenv('JAVA_HOME_21_X64')
+    }

Review Comment:
   ![medium](https://www.gstatic.com/codereviewagent/medium-priority.svg)
   
   The current implementation only checks for `_X64` suffixed environment 
variables (e.g., `JAVA_HOME_17_X64`). On ARM64 runners (such as Apple Silicon 
Macs or ARM64 GitHub Actions runners), `actions/setup-java` sets environment 
variables with the `_ARM64` suffix (e.g., `JAVA_HOME_17_ARM64`).\n\nTo ensure 
compatibility across both x64 and ARM64 architectures, we should check both 
suffixes. We can also simplify and DRY up this block using a loop in Groovy.
   
   ```
       ['11', '17', '21'].each { version ->\n      def propName = 
"java${version}Home"\n      if (!project.hasProperty(propName)) {\n        def 
home = System.getenv("JAVA_HOME_${version}_X64") ?: 
System.getenv("JAVA_HOME_${version}_ARM64")\n        if (home) {\n          
project.ext[propName] = home\n        }\n      }\n    }
   ```



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