From 325a1a8dc1a1ce6f17415d85bbfb877ff0fe5a64 Mon Sep 17 00:00:00 2001
From: Jerome Prinet <jprinet@gradle.com>
Date: Mon, 9 Oct 2023 15:58:28 +0200
Subject: [PATCH] Check current Maven version is aligned with wrapper Maven
 version

---
 .../gradle-enterprise-custom-user-data.groovy | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/.mvn/gradle-enterprise-custom-user-data.groovy b/.mvn/gradle-enterprise-custom-user-data.groovy
index a076e48718294..8e78dcf99e597 100644
--- a/.mvn/gradle-enterprise-custom-user-data.groovy
+++ b/.mvn/gradle-enterprise-custom-user-data.groovy
@@ -96,3 +96,23 @@ if (System.env.GITHUB_ACTIONS) {
     }
 }
 
+// Check runtime Maven version and Maven Wrapper version are aligned
+def runtimeInfo = (org.apache.maven.rtinfo.RuntimeInformation) session.lookup("org.apache.maven.rtinfo.RuntimeInformation")
+def runtimeMavenVersion = runtimeInfo?.getMavenVersion()
+Properties mavenWrapperProperties = new Properties()
+File mavenWrapperPropertiesFile = new File(".mvn/wrapper/maven-wrapper.properties")
+if(mavenWrapperPropertiesFile.exists()) {
+    mavenWrapperPropertiesFile.withInputStream {
+        mavenWrapperProperties.load(it)
+    }
+    // assuming the wrapper properties contains:
+    // distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/VERSION/apache-maven-VERSION-bin.zip
+    if(regexp = mavenWrapperProperties."distributionUrl" =~ /.*\/apache-maven-(.*)-bin\.zip/) {
+        def wrapperMavenVersion = regexp.group(1)
+        if (runtimeMavenVersion && wrapperMavenVersion && wrapperMavenVersion != runtimeMavenVersion) {
+            log.warn("Maven Wrapper is configured with a different version (" + wrapperMavenVersion + ") than the runtime version (" + runtimeMavenVersion + "). This will negatively impact build consistency and build caching.")
+            buildScan.tag("misaligned-maven-version")
+            buildScan.value("wrapper-maven-version", wrapperMavenVersion)
+        }
+    }
+}