Fix google maven repo url

Author: shunping

buildSrc/build.gradle.kts

@@ -22,7 +22,8 @@ fun checkMavenCentralAccessibility(): Boolean {
   val testUrl = "https://repo.maven.apache.org/maven2/org/slf4j/slf4j-api/1.7.2/slf4j-api-1.7.2.pom"
   return try {
     val connection = URL(testUrl).openConnection() as HttpURLConnection
-    connection.requestMethod = "HEAD"
+    connection.requestMethod = "GET"
+    connection.setRequestProperty("User-Agent", "Gradle")
     connection.connectTimeout = 2000
     connection.readTimeout = 2000
     connection.useCaches = false
@@ -33,7 +34,7 @@ fun checkMavenCentralAccessibility(): Boolean {
 }
 
 val isMavenAccessible = checkMavenCentralAccessibility()
-val mavenCentralMirrorUrl = "https://maven-central.storage-api.googleapis.com/repos/central/data/"
+val mavenCentralMirrorUrl = "https://maven-central.storage-download.googleapis.com/maven2/"
 
 // Plugins for configuring _this build_ of the module
 plugins {

buildSrc/src/main/groovy/org/apache/beam/gradle/Repositories.groovy

@@ -34,7 +34,8 @@ class Repositories {
     try {
       def url = new URL(testUrl)
       def connection = (HttpURLConnection) url.openConnection()
-      connection.requestMethod = "HEAD"
+      connection.requestMethod = "GET"
+      connection.setRequestProperty("User-Agent", "Gradle")
       connection.connectTimeout = 2000
       connection.readTimeout = 2000
       connection.useCaches = false
@@ -63,7 +64,7 @@ class Repositories {
         mavenCentral()
       } else {
         project.logger.lifecycle "Maven Central is not accessible. Redirecting to Google Maven Mirror."
-        maven { url "https://maven-central.storage-api.googleapis.com/repos/central/data/" }
+        maven { url "https://maven-central.storage-download.googleapis.com/maven2/" }
       }
       mavenLocal()
 
@@ -100,7 +101,7 @@ class Repositories {
           mavenCentral()
           maven { url "https://plugins.gradle.org/m2/" }
         } else {
-          maven { url "https://maven-central.storage-api.googleapis.com/repos/central/data/" }
+          maven { url "https://maven-central.storage-download.googleapis.com/maven2/" }
         }
         maven { url "https://repo.spring.io/plugins-release" }
         maven { url "https://packages.confluent.io/maven/" }

settings.gradle.kts

@@ -20,15 +20,16 @@ import com.gradle.enterprise.gradleplugin.internal.extension.BuildScanExtensionW
 pluginManagement {
     val isMavenAccessible = try {
         val connection = java.net.URL("https://repo.maven.apache.org/maven2/org/slf4j/slf4j-api/1.7.2/slf4j-api-1.7.2.pom").openConnection() as java.net.HttpURLConnection
-        connection.requestMethod = "HEAD"
+        connection.requestMethod = "GET"
+        connection.setRequestProperty("User-Agent", "Gradle")
         connection.connectTimeout = 2000
         connection.readTimeout = 2000
         connection.useCaches = false
         connection.responseCode == 200
     } catch (e: Exception) {
         false
     }
-    val mavenCentralMirrorUrl = "https://maven-central.storage-api.googleapis.com/repos/central/data/"
+    val mavenCentralMirrorUrl = "https://maven-central.storage-download.googleapis.com/maven2/"
 
     repositories {
         if (isMavenAccessible) {