add setting field default value

Author: hengboy

src/main/java/org/minbox/framework/mongo/client/setting/ConnectionPoolSettings.java

@@ -2,6 +2,9 @@
 
 import lombok.Data;
 
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+import static java.util.concurrent.TimeUnit.MINUTES;
+
 /**
  * All settings that relate to the pool of connections to a MongoDB server.
  *
@@ -11,11 +14,12 @@
  */
 @Data
 public class ConnectionPoolSettings {
-    private int maxSize;
+    private int maxSize = 100;
     private int minSize;
-    private long maxWaitTimeMilliSeconds;
+    private long maxWaitTimeMilliSeconds = 1000 * 60 * 2;
     private long maxConnectionLifeTimeMilliSeconds;
     private long maxConnectionIdleTimeMilliSeconds;
     private long maintenanceInitialDelayMilliSeconds;
-    private long maintenanceFrequencyMilliSeconds;
+    private long maintenanceFrequencyMilliSeconds = MILLISECONDS.convert(1, MINUTES);
+    ;
 }

src/main/java/org/minbox/framework/mongo/client/setting/ServerSettings.java

@@ -11,6 +11,6 @@
  */
 @Data
 public class ServerSettings {
-    private long heartbeatFrequencyMilliSeconds;
-    private long minHeartbeatFrequencyMilliSeconds;
+    private long heartbeatFrequencyMilliSeconds = 10000;
+    private long minHeartbeatFrequencyMilliSeconds = 500;
 }

src/main/java/org/minbox/framework/mongo/client/setting/SocketSettings.java

@@ -18,7 +18,7 @@ public class SocketSettings {
     /**
      * The socket read timeout MilliSeconds
      */
-    private long readTimeoutMilliSeconds;
+    private long readTimeoutMilliSeconds = 10000;
     /**
      * The receive buffer size
      */