content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.
   */
  package com.alibaba.druid.sql.test;
  
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleOutputVisitor;
  import com.alibaba.druid.sql.dialect.postgresql.visitor.PGOutputVisitor;
  import com.alibaba.druid.sql.dialect.sqlserver.visitor.SQLServerOutputVisitor;
  import com.alibaba.druid.sql.visitor.SQLASTOutputVisitor;
  
  import javax.management.MBeanServer;
  import javax.management.ObjectName;
  
  import java.lang.management.ManagementFactory;
  import java.util.Arrays;
  import java.util.List;
  
  public class TestUtils {
      public static String outputOracle(List<SQLStatement> stmtList) {
          StringBuilder out = new StringBuilder();
          OracleOutputVisitor visitor = new OracleOutputVisitor(out);
  
          for (SQLStatement stmt : stmtList) {
              stmt.accept(visitor);
          }
  
          return out.toString();
      }
  
      public static String outputPg(List<SQLStatement> stmtList) {
          StringBuilder out = new StringBuilder();
          PGOutputVisitor visitor = new PGOutputVisitor(out);
  
          for (SQLStatement stmt : stmtList) {
              stmt.accept(visitor);
          }
  
          return out.toString();
      }
  
      public static String outputSqlServer(List<SQLStatement> stmtList) {
          StringBuilder out = new StringBuilder();
          SQLServerOutputVisitor visitor = new SQLServerOutputVisitor(out);
  
          for (SQLStatement stmt : stmtList) {
              stmt.accept(visitor);
          }
  
          return out.toString();
      }
  
      public static String outputOracle(SQLStatement... stmtList) {
          return outputOracle(Arrays.asList(stmtList));
      }
  
      public static String outputSqlServer(SQLStatement... stmtList) {
          return outputSqlServer(Arrays.asList(stmtList));
      }
  
      public static String output(SQLStatement... stmtList) {
          return output(Arrays.asList(stmtList));
      }
  
      public static String output(List<SQLStatement> stmtList) {
          StringBuilder out = new StringBuilder();
          SQLASTOutputVisitor visitor = new SQLASTOutputVisitor(out);
  
          for (SQLStatement stmt : stmtList) {
              stmt.accept(visitor);
          }
  
          return out.toString();
      }
  
      public static long getYoungGC() {
          try {
              // java.lang:type=GarbageCollector,name=G1 Young Generation
              // java.lang:type=GarbageCollector,name=G1 Old Generation
              MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer();
              ObjectName objectName;
              if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=ParNew"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=ParNew");
              } else if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=Copy"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=Copy");
              } else if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=G1 Young Generation"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=G1 Young Generation");
              } else {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=PS Scavenge");
              }
  
              return (Long) mbeanServer.getAttribute(objectName, "CollectionCount");
          } catch (Exception e) {
              throw new RuntimeException("error");
          }
      }
  
      public static long getYoungGCTime() {
          try {
              MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer();
              ObjectName objectName;
              if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=ParNew"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=ParNew");
              } else if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=Copy"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=Copy");
              } else if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=G1 Young Generation"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=G1 Young Generation");
              } else {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=PS Scavenge");
              }
  
              return (Long) mbeanServer.getAttribute(objectName, "CollectionTime");
          } catch (Exception e) {
              throw new RuntimeException("error", e);
          }
      }
  
      public static long getFullGC() {
          try {
              MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer();
              ObjectName objectName;
  
              if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=ConcurrentMarkSweep"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=ConcurrentMarkSweep");
              } else if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=MarkSweepCompact"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=MarkSweepCompact");
              } else if (mbeanServer.isRegistered(new ObjectName("java.lang:type=GarbageCollector,name=G1 Old Generation"))) {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=G1 Old Generation");
              } else {
                  objectName = new ObjectName("java.lang:type=GarbageCollector,name=PS MarkSweep");
              }
  
              return (Long) mbeanServer.getAttribute(objectName, "CollectionCount");
          } catch (Exception e) {
              throw new RuntimeException("error");
          }
      }
  }
  