Consolidate buildSrc checking logic inside buildSrc/settings.gradle.kts and propagate via System property

Author: shunping

buildSrc/build.gradle.kts

@@ -15,40 +15,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import java.net.HttpURLConnection
-import java.net.URL
 import java.util.Properties
 
-fun checkMavenCentralAccessibility(testUrl: String): Boolean {
-  val accessible = try {
-    val connection = URL(testUrl).openConnection() as HttpURLConnection
-    connection.requestMethod = "GET"
-    connection.setRequestProperty("User-Agent", "Gradle")
-    connection.connectTimeout = 2000
-    connection.readTimeout = 2000
-    connection.useCaches = false
-    connection.responseCode == 200
-  } catch (e: Exception) {
-    false
-  }
-  return accessible
-}
-
 val parentProperties = Properties().apply {
   val file = file("../gradle.properties")
   if (file.exists()) {
     file.inputStream().use { load(it) }
   }
 }
 
-val mavenCentralTestUrl = parentProperties.getProperty("mavenCentralTestUrl")
 val mavenCentralMirrorUrl = parentProperties.getProperty("mavenCentralMirrorUrl")
 
-val isMavenAccessible = if (!mavenCentralTestUrl.isNullOrBlank()) {
-  checkMavenCentralAccessibility(mavenCentralTestUrl)
-} else {
-  true
-}
+val isMavenAccessible = System.getProperty("buildSrc.maven.accessible")?.toBoolean() ?: true
 
 val useFallbackMirror = !isMavenAccessible && !mavenCentralMirrorUrl.isNullOrBlank()
 

buildSrc/settings.gradle.kts

@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.util.Properties
+
+pluginManagement {
+    val parentProperties = java.util.Properties().apply {
+        val file = file("../gradle.properties")
+        if (file.exists()) {
+            file.inputStream().use { load(it) }
+        }
+    }
+
+    val mavenCentralTestUrl = parentProperties.getProperty("mavenCentralTestUrl")
+    val mavenCentralMirrorUrl = parentProperties.getProperty("mavenCentralMirrorUrl")
+
+    val isMavenAccessible = if (!mavenCentralTestUrl.isNullOrBlank()) {
+        try {
+            val connection = java.net.URL(mavenCentralTestUrl).openConnection() as java.net.HttpURLConnection
+            connection.requestMethod = "GET"
+            connection.setRequestProperty("User-Agent", "Gradle")
+            connection.connectTimeout = 2000
+            connection.readTimeout = 2000
+            connection.useCaches = false
+            connection.responseCode == 200
+        } catch (e: Exception) {
+            false
+        }
+    } else {
+        true
+    }
+    System.setProperty("buildSrc.maven.accessible", isMavenAccessible.toString())
+
+    val useFallbackMirror = !isMavenAccessible && !mavenCentralMirrorUrl.isNullOrBlank()
+
+    if (isMavenAccessible) {
+        logger.lifecycle("Maven Central is accessible. Using default repositories for buildSrc plugins.")
+    } else if (useFallbackMirror) {
+        logger.lifecycle("Maven Central is not accessible. Falling back to Google Maven Mirror for buildSrc plugins.")
+    } else {
+        logger.lifecycle("Maven Central is not accessible and no mirror is configured. Using default repositories for buildSrc plugins.")
+    }
+
+    repositories {
+        if (useFallbackMirror) {
+            maven { url = uri(mavenCentralMirrorUrl!!) }
+        }
+        gradlePluginPortal()
+    }
+}