Use raw JDBC parameter string instead of ssl boolean flag

src/main/java/org/mobarena/stats/store/mariadb/MariadbStatsStore.java

@@ -29,11 +29,11 @@ public class MariadbStatsStore {
         String host = config.getString("host", "localhost");
         int port = config.getInt("port", 3306);
         String database = config.getString("database", "mobarena_stats");
-        boolean ssl = config.getBoolean("ssl", false);
+        String ssl = config.getString("ssl", "");
 
-        String params = "useSSL=" + ssl;
+        String url = "jdbc:mariadb://" + host + ":" + port + "/" + database;
 
-        return "jdbc:mariadb://" + host + ":" + port + "/" + database + "?" + params;
+        return ssl.isEmpty() ? url : url + "?" + ssl;
     }
 
 }

src/main/java/org/mobarena/stats/store/mysql/MysqlStatsStore.java

@@ -27,11 +27,11 @@ public class MysqlStatsStore {
         String host = config.getString("host", "localhost");
         int port = config.getInt("port", 3306);
         String database = config.getString("database", "mobarena_stats");
-        boolean ssl = config.getBoolean("ssl", false);
+        String ssl = config.getString("ssl", "");
 
-        String params = "useSSL=" + ssl;
+        String url = "jdbc:mysql://" + host + ":" + port + "/" + database;
 
-        return "jdbc:mysql://" + host + ":" + port + "/" + database + "?" + params;
+        return ssl.isEmpty() ? url : url + "?" + ssl;
     }
 
 }

src/main/resources/config.yml

@@ -38,14 +38,15 @@ store:
   # - database: name of the database (must exist!)
   # - username: username of a valid database user
   # - password: password of a valid database user
-  # - ssl: whether to use SSL for database connections
+  # - ssl: extra JDBC connection parameters, appended to the URL as-is
+  #         (e.g. 'verifyServerCertificate=false&sslmode=required')
   #
   #host: localhost
   #port: 3306
   #database: ''
   #username: ''
   #password: ''
-  #ssl: false
+  #ssl: ''
   #--------------------------------------------------------------------
 
   #--------------------------------------------------------------------

src/test/java/org/mobarena/stats/store/mariadb/MariadbStatsStoreTest.java

@@ -16,7 +16,7 @@ class MariadbStatsStoreTest {
 
         String result = MariadbStatsStore.getUrl(config);
 
-        String expected = "jdbc:mariadb://localhost:3306/mobarena_stats?useSSL=false";
+        String expected = "jdbc:mariadb://localhost:3306/mobarena_stats";
         assertThat(result, equalTo(expected));
     }
 
@@ -26,11 +26,11 @@ class MariadbStatsStoreTest {
         config.set("host", "stats.example.com");
         config.set("port", 1337);
         config.set("database", "mastats");
-        config.set("ssl", true);
+        config.set("ssl", "verifyServerCertificate=false&sslmode=required");
 
         String result = MariadbStatsStore.getUrl(config);
 
-        String expected = "jdbc:mariadb://stats.example.com:1337/mastats?useSSL=true";
+        String expected = "jdbc:mariadb://stats.example.com:1337/mastats?verifyServerCertificate=false&sslmode=required";
         assertThat(result, equalTo(expected));
     }
 

src/test/java/org/mobarena/stats/store/mysql/MysqlStatsStoreTest.java

@@ -16,7 +16,7 @@ class MysqlStatsStoreTest {
 
         String result = MysqlStatsStore.getUrl(config);
 
-        String expected = "jdbc:mysql://localhost:3306/mobarena_stats?useSSL=false";
+        String expected = "jdbc:mysql://localhost:3306/mobarena_stats";
         assertThat(result, equalTo(expected));
     }
 
@@ -26,11 +26,11 @@ class MysqlStatsStoreTest {
         config.set("host", "stats.example.com");
         config.set("port", 1337);
         config.set("database", "mastats");
-        config.set("ssl", true);
+        config.set("ssl", "verifyServerCertificate=false&sslmode=required");
 
         String result = MysqlStatsStore.getUrl(config);
 
-        String expected = "jdbc:mysql://stats.example.com:1337/mastats?useSSL=true";
+        String expected = "jdbc:mysql://stats.example.com:1337/mastats?verifyServerCertificate=false&sslmode=required";
         assertThat(result, equalTo(expected));
     }