Build Scan URL parsing is more resilient

components/fetch-build-scan-data-cmdline-tool/src/main/java/com/gradle/enterprise/model/NumberedBuildScan.java

@@ -65,10 +65,10 @@ private static URL extractBaseUrl(URL buildScanUrl) {
 
     private static String extractBuildScanId(URL buildScanUrl) {
         String[] pathSegments = buildScanUrl.getPath().split("/");
-        if (pathSegments.length == 0) {
+        if (pathSegments.length <= 2 || !pathSegments[1].equals("s")) {
             throw new IllegalArgumentException("Invalid Build Scan URL: " + buildScanUrl);
         }
-        return pathSegments[pathSegments.length - 1];
+        return pathSegments[2];
     }
 
     private static URL toURL(String url) {

components/fetch-build-scan-data-cmdline-tool/src/test/java/com/gradle/enterprise/model/NumberedBuildScanTests.java

@@ -0,0 +1,42 @@
+package com.gradle.enterprise.model;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.net.URL;
+
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class NumberedBuildScanTests {
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            "https://ge.example.com/s/7slcdesxr2xnw",
+            "https://ge.example.com/s/7slcdesxr2xnw/",
+            "https://ge.example.com/s/7slcdesxr2xnw/timeline",
+            "https://ge.example.com/s/7slcdesxr2xnw/console-log?page=1",
+            "https://ge.example.com/s/7slcdesxr2xnw/projects#:foo-service"
+    })
+    void validBuildScanUrlsAreCorrectlyParsed(String buildScanUrl) {
+        final NumberedBuildScan numberedBuildScan = NumberedBuildScan.parse("0," + buildScanUrl);
+        assertAll(
+                () -> assertEquals(new URL("https://ge.example.com"), numberedBuildScan.baseUrl()),
+                () -> assertEquals("7slcdesxr2xnw", numberedBuildScan.buildScanId())
+        );
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            "https://ge.example.com",
+            "https://ge.example.com/",
+            "https://ge.example.com/s",
+            "https://ge.example.com/s/",
+            "https://ge.example.com/S/",
+            "https://ge.example.com/S/7slcdesxr2xnw",
+    })
+    void invalidBuildScanUrlsThrowException(String buildScanUrl) {
+        assertThrows(IllegalArgumentException.class, () -> NumberedBuildScan.parse("0," + buildScanUrl));
+    }
+}

release/changes.md

@@ -1 +1,2 @@
 - [FIX] Logging level when fetching Build Scan data from Gradle Enterprise is incorrect 
+- [FIX] Experiments accepting Build Scan URLs incorrectly parse Build Scan ID when path contains extra parts