add ShardingThreadFactoryBuilder

sharding-jdbc/src/main/java/io/shardingsphere/core/executor/ExecutorEngine.java

@@ -19,7 +19,6 @@
 
 import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.common.util.concurrent.MoreExecutors;
-import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import io.shardingsphere.core.constant.SQLType;
 import io.shardingsphere.core.executor.event.AbstractExecutionEvent;
 import io.shardingsphere.core.executor.event.DMLExecutionEvent;
@@ -40,7 +39,6 @@
 import java.util.Map;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -54,28 +52,17 @@
 @Slf4j
 public abstract class ExecutorEngine implements AutoCloseable {
 
-    private static final String EXECUTOR_NAME_FORMAT = "Sharding-Sphere-%d";
-
-    private static final String SHUTDOWN_EXECUTOR_NAME = "Sharding-Sphere-ExecutorEngineCloser";
-
-    private static final ExecutorService SHUTDOWN_EXECUTOR = Executors.newSingleThreadExecutor(newThreadFactory(SHUTDOWN_EXECUTOR_NAME));
+    private static final ExecutorService SHUTDOWN_EXECUTOR = Executors.newSingleThreadExecutor(ShardingThreadFactoryBuilder.build("ExecutorEngineCloser"));
 
     @Getter
     private final ListeningExecutorService executorService;
 
     public ExecutorEngine(final int executorSize) {
-        executorService = MoreExecutors.listeningDecorator(0 == executorSize ? Executors.newCachedThreadPool(newThreadFactory()) : Executors.newFixedThreadPool(executorSize, newThreadFactory()));
+        executorService = MoreExecutors.listeningDecorator(
+                0 == executorSize ? Executors.newCachedThreadPool(ShardingThreadFactoryBuilder.build()) : Executors.newFixedThreadPool(executorSize, ShardingThreadFactoryBuilder.build()));
         MoreExecutors.addDelayedShutdownHook(executorService, 60, TimeUnit.SECONDS);
     }
 
-    private static ThreadFactory newThreadFactory(final String nameFormat) {
-        return new ThreadFactoryBuilder().setDaemon(true).setNameFormat(nameFormat).build();
-    }
-
-    private static ThreadFactory newThreadFactory() {
-        return newThreadFactory(EXECUTOR_NAME_FORMAT);
-    }
-
     /**
      * Execute.
      *

sharding-jdbc/src/main/java/io/shardingsphere/core/executor/ShardingThreadFactoryBuilder.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2016-2018 shardingsphere.io.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * </p>
+ */
+
+package io.shardingsphere.core.executor;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+
+import java.util.concurrent.ThreadFactory;
+
+/**
+ * Sharding thread factory builder.
+ *
+ * @author zhangliang
+ */
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class ShardingThreadFactoryBuilder {
+
+    private static final String NAME_FORMAT_PREFIX = "Sharding-Sphere-";
+
+    private static final String DEFAULT_EXECUTOR_NAME_FORMAT = NAME_FORMAT_PREFIX + "%d";
+
+    /**
+     * Build default sharding thread factory.
+     *
+     * @return default sharding thread factory
+     */
+    public static ThreadFactory build() {
+        return new ThreadFactoryBuilder().setDaemon(true).setNameFormat(DEFAULT_EXECUTOR_NAME_FORMAT).build();
+    }
+
+    /**
+     * Build sharding thread factory.
+     * 
+     * @param nameFormat thread name format
+     * @return sharding thread factory
+     */
+    public static ThreadFactory build(final String nameFormat) {
+        return new ThreadFactoryBuilder().setDaemon(true).setNameFormat(NAME_FORMAT_PREFIX + nameFormat).build();
+    }
+}