use snowflake

sharding-core/src/main/java/io/shardingsphere/core/keygen/KeyGeneratorType.java

@@ -30,7 +30,7 @@ import lombok.RequiredArgsConstructor;
 @Getter
 public enum KeyGeneratorType {
     
-    SNOWFLAKE("io.shardingsphere.core.keygen.DefaultKeyGenerator"),
+    SNOWFLAKE("io.shardingsphere.core.keygen.SnowflakeKeyGenerator"),
     UUID(""),
     LEAF("");
     

sharding-core/src/test/java/io/shardingsphere/core/keygen/AllKeygenTests.java

@@ -23,7 +23,7 @@ import org.junit.runners.Suite.SuiteClasses;
 
 @RunWith(Suite.class)
 @SuiteClasses({
-        DefaultKeyGeneratorTest.class, 
+        SnowflakeKeyGeneratorTest.class, 
         KeyGeneratorFactoryTest.class
     })
 public final class AllKeygenTests {

sharding-core/src/test/java/io/shardingsphere/core/keygen/KeyGeneratorFactoryTest.java

@@ -33,7 +33,7 @@ public final class KeyGeneratorFactoryTest {
     
     @Test
     public void assertCreateKeyGeneratorSuccess() {
-        assertThat(KeyGeneratorFactory.newInstance(DefaultKeyGenerator.class.getName()), instanceOf(DefaultKeyGenerator.class));
+        assertThat(KeyGeneratorFactory.newInstance(SnowflakeKeyGenerator.class.getName()), instanceOf(SnowflakeKeyGenerator.class));
     }
     
     @Test(expected = IllegalArgumentException.class)

sharding-core/src/test/java/io/shardingsphere/core/keygen/fixture/FixedTimeService.java

@@ -17,7 +17,7 @@
 
 package io.shardingsphere.core.keygen.fixture;
 
-import io.shardingsphere.core.keygen.DefaultKeyGenerator;
+import io.shardingsphere.core.keygen.SnowflakeKeyGenerator;
 import io.shardingsphere.core.keygen.TimeService;
 import lombok.RequiredArgsConstructor;
 
@@ -30,7 +30,7 @@ public final class FixedTimeService extends TimeService {
     
     private final AtomicInteger invokedTimes = new AtomicInteger();
     
-    private long current = DefaultKeyGenerator.EPOCH;
+    private long current = SnowflakeKeyGenerator.EPOCH;
     
     @Override
     public long getCurrentMillis() {