Merge pull request #3555 from kaliy/adding_firebird_to_health_checking

* pr/3555:
  Polish
  Add firebird specific health query

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/DataSourceHealthIndicator.java

@@ -43,6 +43,7 @@ import org.springframework.util.StringUtils;
  * @author Christian Dupuis
  * @author Andy Wilkinson
  * @author Stephane Nicoll
+ * @author Arthur Kalimullin
  * @since 1.1.0
  */
 public class DataSourceHealthIndicator extends AbstractHealthIndicator implements
@@ -203,13 +204,22 @@ public class DataSourceHealthIndicator extends AbstractHealthIndicator implement
 
 		},
 
-		INFORMIX("Informix Dynamic Server", "select count(*) from systables");
+		INFORMIX("Informix Dynamic Server", "select count(*) from systables"),
+
+		FIREBIRD("Firebird", "SELECT 1 FROM RDB$DATABASE") {
+
+			@Override
+			protected boolean matchesProduct(String product) {
+				return super.matchesProduct(product)
+						|| product.toLowerCase().startsWith("firebird");
+			}
+		};
 
 		private final String product;
 
 		private final String query;
 
-		private Product(String product, String query) {
+		Product(String product, String query) {
 			this.product = product;
 			this.query = query;
 		}

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/DataSourceHealthIndicatorTests.java

@@ -110,6 +110,8 @@ public class DataSourceHealthIndicatorTests {
 		assertThat(Product.forProduct("DB2/LINUXX8664"), equalTo(Product.DB2));
 		assertThat(Product.forProduct("Informix Dynamic Server"),
 				equalTo(Product.INFORMIX));
+		assertThat(Product.forProduct("Firebird 2.5.WI"), equalTo(Product.FIREBIRD));
+		assertThat(Product.forProduct("Firebird 2.1.LI"), equalTo(Product.FIREBIRD));
 	}
 
 }