From 4ee88736f5cd0eb649a8a289ddb5a6fd36c78024 Mon Sep 17 00:00:00 2001
From: Wojtek Wajerowicz
 <115081248+wojciech-wajerowicz-sonarsource@users.noreply.github.com>
Date: Mon, 22 Jan 2024 10:41:11 +0100
Subject: [PATCH] SONAR-19603 Throw exception when lib/scanner doesn't exist.

---
 .../java/org/sonar/server/batch/BatchIndex.java     |  4 ++++
 .../java/org/sonar/server/batch/BatchIndexTest.java | 13 ++++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/server/sonar-webserver-webapi/src/main/java/org/sonar/server/batch/BatchIndex.java b/server/sonar-webserver-webapi/src/main/java/org/sonar/server/batch/BatchIndex.java
index fb210a45791..2fa9934bee9 100644
--- a/server/sonar-webserver-webapi/src/main/java/org/sonar/server/batch/BatchIndex.java
+++ b/server/sonar-webserver-webapi/src/main/java/org/sonar/server/batch/BatchIndex.java
@@ -35,6 +35,8 @@ import org.sonar.api.server.ServerSide;
 import org.sonar.server.exceptions.NotFoundException;
 import org.sonar.server.platform.ServerFileSystem;
 
+import static java.lang.String.format;
+
 /**
  * Scanner Engine JAR file(s) to be downloaded by sonar-scanner-api. There is currently only one JAR (see assembly.xml)
  * but let's keep possibility to pass several files for possible future evolutions.
@@ -66,6 +68,8 @@ public class BatchIndex implements Startable {
           }
         }
       }
+    } else {
+      throw new IllegalStateException(format("%s folder not found", batchDir.getAbsolutePath()));
     }
     this.index = sb.toString();
   }
diff --git a/server/sonar-webserver-webapi/src/test/java/org/sonar/server/batch/BatchIndexTest.java b/server/sonar-webserver-webapi/src/test/java/org/sonar/server/batch/BatchIndexTest.java
index 989386e590f..5a744a8615e 100644
--- a/server/sonar-webserver-webapi/src/test/java/org/sonar/server/batch/BatchIndexTest.java
+++ b/server/sonar-webserver-webapi/src/test/java/org/sonar/server/batch/BatchIndexTest.java
@@ -30,6 +30,7 @@ import org.junit.rules.TemporaryFolder;
 import org.sonar.server.exceptions.NotFoundException;
 import org.sonar.server.platform.ServerFileSystem;
 
+import static java.lang.String.format;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.mockito.Mockito.mock;
@@ -40,7 +41,6 @@ public class BatchIndexTest {
   @Rule
   public TemporaryFolder temp = new TemporaryFolder();
 
-
   private File jar;
 
   private ServerFileSystem fs = mock(ServerFileSystem.class);
@@ -103,4 +103,15 @@ public class BatchIndexTest {
       .isInstanceOf(NotFoundException.class)
       .hasMessage("Bad filename: other.jar");
   }
+
+  @Test
+  public void start_whenBatchDirDoesntExist_shouldThrow() throws IOException {
+    File homeDir = temp.newFolder();
+    when(fs.getHomeDir()).thenReturn(homeDir);
+
+    BatchIndex batchIndex = new BatchIndex(fs);
+    assertThatThrownBy(batchIndex::start)
+      .isInstanceOf(IllegalStateException.class)
+      .hasMessage(format("%s/lib/scanner folder not found", homeDir.getAbsolutePath()));
+  }
 }
-- 
2.39.5