fix: MySQL host info type (#1423)

Co-authored-by: xeroman.k <xeroman.k@coinone.com>
Co-authored-by: Karen <64801825+karenc-bq@users.noreply.github.com>

Author: 3 people

wrapper/src/main/java/software/amazon/jdbc/hostlistprovider/RdsHostListProvider.java

@@ -435,8 +435,8 @@ protected HostSpec createHost(final ResultSet resultSet) throws SQLException {
     // should contain 4 columns: node ID, 1/0 (writer/reader), CPU utilization, node lag in time.
     String hostName = resultSet.getString(1);
     final boolean isWriter = resultSet.getBoolean(2);
-    final float cpuUtilization = resultSet.getFloat(3);
-    final float nodeLag = resultSet.getFloat(4);
+    final double cpuUtilization = resultSet.getDouble(3);
+    final double nodeLag = resultSet.getDouble(4);
     Timestamp lastUpdateTime;
     try {
       lastUpdateTime = resultSet.getTimestamp(5);

wrapper/src/test/java/software/amazon/jdbc/hostlistprovider/RdsHostListProviderTest.java

@@ -532,15 +532,15 @@ void testGetTopology_StaleRecord() throws SQLException {
 
     final String hostName1 = "hostName1";
     final String hostName2 = "hostName2";
-    final Float cpuUtilization = 11.1F;
-    final Float nodeLag = 0.123F;
+    final Double cpuUtilization = 11.1D;
+    final Double nodeLag = 0.123D;
     final Timestamp firstTimestamp = Timestamp.from(Instant.now());
     final Timestamp secondTimestamp = new Timestamp(firstTimestamp.getTime() + 100);
     when(mockResultSet.next()).thenReturn(true, true, false);
     when(mockResultSet.getString(1)).thenReturn(hostName1).thenReturn(hostName2);
     when(mockResultSet.getBoolean(2)).thenReturn(true).thenReturn(true);
-    when(mockResultSet.getFloat(3)).thenReturn(cpuUtilization).thenReturn(cpuUtilization);
-    when(mockResultSet.getFloat(4)).thenReturn(nodeLag).thenReturn(nodeLag);
+    when(mockResultSet.getDouble(3)).thenReturn(cpuUtilization).thenReturn(cpuUtilization);
+    when(mockResultSet.getDouble(4)).thenReturn(nodeLag).thenReturn(nodeLag);
     when(mockResultSet.getTimestamp(5)).thenReturn(firstTimestamp).thenReturn(secondTimestamp);
     long weight = Math.round(nodeLag) * 100L + Math.round(cpuUtilization);
     final HostSpec expectedWriter = new HostSpecBuilder(new SimpleHostAvailabilityStrategy())
@@ -565,13 +565,13 @@ void testGetTopology_InvalidLastUpdatedTimestamp() throws SQLException {
     rdsHostListProvider.isInitialized = true;
 
     final String hostName = "hostName";
-    final Float cpuUtilization = 11.1F;
-    final Float nodeLag = 0.123F;
+    final Double cpuUtilization = 11.1D;
+    final Double nodeLag = 0.123D;
     when(mockResultSet.next()).thenReturn(true, false);
     when(mockResultSet.getString(1)).thenReturn(hostName);
     when(mockResultSet.getBoolean(2)).thenReturn(true);
-    when(mockResultSet.getFloat(3)).thenReturn(cpuUtilization);
-    when(mockResultSet.getFloat(4)).thenReturn(nodeLag);
+    when(mockResultSet.getDouble(3)).thenReturn(cpuUtilization);
+    when(mockResultSet.getDouble(4)).thenReturn(nodeLag);
     when(mockResultSet.getTimestamp(5)).thenThrow(WrongArgumentException.class);
 
     final FetchTopologyResult result = rdsHostListProvider.getTopology(mockConnection, true);