1 files changed, 32 insertions, 0 deletions
diff --git a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbHelper.java b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbHelper.java
new file mode 100644
index 00000000..a7e2a191
--- /dev/null
+++ b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbHelper.java
@@ -0,0 +1,32 @@
+package org.openslx.bwlp.sat.database.mappers;
+
+import java.sql.ResultSet;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.openslx.bwlp.sat.database.Database;
+import org.openslx.bwlp.sat.database.MysqlConnection;
+import org.openslx.bwlp.sat.database.MysqlStatement;
+
+public class DbHelper {
+
+	private static final Logger LOGGER = LogManager.getLogger(DbHelper.class);
+
+	public static boolean isDockerContainerAvailable(){
+
+		try (MysqlConnection connection = Database.getConnection()) {
+			MysqlStatement stmt = connection.prepareStatement(
+					"SELECT *FROM virtualizer WHERE virtid = \"docker\"");
+			ResultSet rs = stmt.executeQuery();
+
+			if (!rs.isBeforeFirst()) {
+				// no data, do not enable.
+				return false;
+			}
+			return true;
+		} catch (Exception e) {
+			LOGGER.error("Query failed in DbHelper.isDockerContainerAvailable()", e);
+			return false;
+		}
+	}
+}