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.proxy.jdbc;
  
  import com.alibaba.druid.filter.FilterChainImpl;
  import com.alibaba.druid.filter.stat.StatFilter;
  
  import java.sql.*;
  import java.util.Date;
  import java.util.Map;
  import java.util.Properties;
  import java.util.concurrent.Executor;
  
  /**
   * @author wenshao [szujobs@hotmail.com]
   */
  public class ConnectionProxyImpl extends WrapperProxyImpl implements ConnectionProxy {
      private final Connection connection;
  
      private final DataSourceProxy dataSource;
  
      private final Properties properties;
  
      private final long connectedTime;
  
      private TransactionInfo transactionInfo;
  
      private int closeCount;
  
      private FilterChainImpl filterChain;
  
      private long lastValidateTimeMillis;
  
      public ConnectionProxyImpl(DataSourceProxy dataSource, Connection connection, Properties properties, long id) {
          super(connection, id);
          this.dataSource = dataSource;
          this.connection = connection;
          this.properties = properties;
          this.connectedTime = System.currentTimeMillis();
      }
  
      public Date getConnectedTime() {
          return new Date(connectedTime);
      }
  
      public Properties getProperties() {
          return properties;
      }
  
      public Connection getConnectionRaw() {
          return connection;
      }
  
      public Connection getRawObject() {
          return connection;
      }
  
      public DataSourceProxy getDirectDataSource() {
          return this.dataSource;
      }
  
      public FilterChainImpl createChain() {
          FilterChainImpl chain = this.filterChain;
          if (chain == null) {
              chain = new FilterChainImpl(dataSource);
          } else {
              this.filterChain = null;
          }
  
          return chain;
      }
  
      public void recycleFilterChain(FilterChainImpl chain) {
          chain.reset();
          this.filterChain = chain;
      }
  
      @Override
      public void clearWarnings() throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_clearWarnings(this);
          recycleFilterChain(chain);
      }
  
      @Override
      public void close() throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_close(this);
          closeCount++;
          recycleFilterChain(chain);
      }
  
      @Override
      public void commit() throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_commit(this);
  
          if (transactionInfo != null) {
              transactionInfo.setEndTimeMillis();
          }
          recycleFilterChain(chain);
      }
  
      @Override
      public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
          FilterChainImpl chain = createChain();
          Array value = chain.connection_createArrayOf(this, typeName, elements);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public Blob createBlob() throws SQLException {
          FilterChainImpl chain = createChain();
          Blob value = chain.connection_createBlob(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public Clob createClob() throws SQLException {
          FilterChainImpl chain = createChain();
          Clob value = chain.connection_createClob(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public NClob createNClob() throws SQLException {
          FilterChainImpl chain = createChain();
          NClob value = chain.connection_createNClob(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public SQLXML createSQLXML() throws SQLException {
          FilterChainImpl chain = createChain();
          SQLXML value = chain.connection_createSQLXML(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public Statement createStatement() throws SQLException {
          FilterChainImpl chain = createChain();
          Statement stmt = chain.connection_createStatement(this);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public Statement createStatement(int resultSetType, //
                                       int resultSetConcurrency //
      ) throws SQLException {
          FilterChainImpl chain = createChain();
          Statement stmt = chain.connection_createStatement(this, resultSetType, resultSetConcurrency);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public Statement createStatement(int resultSetType, //
                                       int resultSetConcurrency, //
                                       int resultSetHoldability //
      ) throws SQLException {
          FilterChainImpl chain = createChain();
          Statement stmt = chain.connection_createStatement(this, resultSetType, resultSetConcurrency,
                  resultSetHoldability);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
          FilterChainImpl chain = createChain();
          Struct value = chain.connection_createStruct(this, typeName, attributes);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public boolean getAutoCommit() throws SQLException {
          FilterChainImpl chain = createChain();
          boolean value = chain.connection_getAutoCommit(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public String getCatalog() throws SQLException {
          FilterChainImpl chain = createChain();
          String value = chain.connection_getCatalog(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public Properties getClientInfo() throws SQLException {
          FilterChainImpl chain = createChain();
          Properties value = chain.connection_getClientInfo(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public String getClientInfo(String name) throws SQLException {
          FilterChainImpl chain = createChain();
          String value = chain.connection_getClientInfo(this, name);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public int getHoldability() throws SQLException {
          FilterChainImpl chain = createChain();
          int value = chain.connection_getHoldability(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public DatabaseMetaData getMetaData() throws SQLException {
          FilterChainImpl chain = createChain();
          DatabaseMetaData value = chain.connection_getMetaData(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public int getTransactionIsolation() throws SQLException {
          FilterChainImpl chain = createChain();
          int value = chain.connection_getTransactionIsolation(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public Map<String, Class<?>> getTypeMap() throws SQLException {
          FilterChainImpl chain = createChain();
          Map<String, Class<?>> value = chain.connection_getTypeMap(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public SQLWarning getWarnings() throws SQLException {
          FilterChainImpl chain = createChain();
          SQLWarning value = chain.connection_getWarnings(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public boolean isClosed() throws SQLException {
          FilterChainImpl chain = createChain();
          boolean value = chain.connection_isClosed(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public boolean isReadOnly() throws SQLException {
          FilterChainImpl chain = createChain();
          boolean value = chain.connection_isReadOnly(this);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public boolean isValid(int timeout) throws SQLException {
          FilterChainImpl chain = createChain();
          boolean value = chain.connection_isValid(this, timeout);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public String nativeSQL(String sql) throws SQLException {
          FilterChainImpl chain = createChain();
          String value = chain.connection_nativeSQL(this, sql);
          recycleFilterChain(chain);
          return value;
      }
  
      @Override
      public CallableStatement prepareCall(String sql) throws SQLException {
          FilterChainImpl chain = createChain();
          CallableStatement stmt = chain.connection_prepareCall(this, sql);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
          FilterChainImpl chain = createChain();
          CallableStatement stmt = chain.connection_prepareCall(this, sql, resultSetType, resultSetConcurrency);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency,
                                           int resultSetHoldability) throws SQLException {
          FilterChainImpl chain = createChain();
          CallableStatement stmt = chain.connection_prepareCall(this, sql, resultSetType, resultSetConcurrency,
                  resultSetHoldability);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public PreparedStatement prepareStatement(String sql) throws SQLException {
          FilterChainImpl chain = createChain();
          PreparedStatement stmt = chain.connection_prepareStatement(this, sql);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
          FilterChainImpl chain = createChain();
          PreparedStatement stmt = chain.connection_prepareStatement(this, sql, autoGeneratedKeys);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
          FilterChainImpl chain = createChain();
          PreparedStatement stmt = chain.connection_prepareStatement(this, sql, columnIndexes);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
          FilterChainImpl chain = createChain();
          PreparedStatement stmt = chain.connection_prepareStatement(this, sql, columnNames);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency)
              throws SQLException {
          FilterChainImpl chain = createChain();
          PreparedStatement stmt = chain.connection_prepareStatement(this, sql, resultSetType, resultSetConcurrency);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency,
                                                int resultSetHoldability) throws SQLException {
          FilterChainImpl chain = createChain();
          PreparedStatement stmt = chain.connection_prepareStatement(this, sql, resultSetType, resultSetConcurrency,
                  resultSetHoldability);
          recycleFilterChain(chain);
          return stmt;
      }
  
      @Override
      public void releaseSavepoint(Savepoint savepoint) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_releaseSavepoint(this, savepoint);
          recycleFilterChain(chain);
      }
  
      @Override
      public void rollback() throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_rollback(this);
          recycleFilterChain(chain);
          if (transactionInfo != null) {
              transactionInfo.setEndTimeMillis();
          }
      }
  
      @Override
      public void rollback(Savepoint savepoint) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_rollback(this, savepoint);
          recycleFilterChain(chain);
          if (transactionInfo != null) {
              transactionInfo.setEndTimeMillis();
          }
      }
  
      @Override
      public void setAutoCommit(boolean autoCommit) throws SQLException {
          if (!autoCommit) {
              if (transactionInfo == null) {
                  long transactionId = this.dataSource.createTransactionId();
                  transactionInfo = new TransactionInfo(transactionId);
                  this.putAttribute(StatFilter.ATTR_TRANSACTION, transactionInfo); // compatible for druid 0.1.18
              }
          } else {
              transactionInfo = null;
          }
  
          FilterChainImpl chain = createChain();
          chain.connection_setAutoCommit(this, autoCommit);
          recycleFilterChain(chain);
      }
  
      @Override
      public void setCatalog(String catalog) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setCatalog(this, catalog);
          recycleFilterChain(chain);
      }
  
      @Override
      public void setClientInfo(Properties properties) throws SQLClientInfoException {
          FilterChainImpl chain = createChain();
          chain.connection_setClientInfo(this, properties);
          recycleFilterChain(chain);
      }
  
      @Override
      public void setClientInfo(String name, String value) throws SQLClientInfoException {
          FilterChainImpl chain = createChain();
          chain.connection_setClientInfo(this, name, value);
          recycleFilterChain(chain);
      }
  
      @Override
      public void setHoldability(int holdability) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setHoldability(this, holdability);
          recycleFilterChain(chain);
      }
  
      @Override
      public void setReadOnly(boolean readOnly) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setReadOnly(this, readOnly);
          recycleFilterChain(chain);
      }
  
      @Override
      public Savepoint setSavepoint() throws SQLException {
          FilterChainImpl chain = createChain();
          Savepoint savepoint = chain.connection_setSavepoint(this);
          recycleFilterChain(chain);
          return savepoint;
      }
  
      @Override
      public Savepoint setSavepoint(String name) throws SQLException {
          FilterChainImpl chain = createChain();
          Savepoint savepoint = chain.connection_setSavepoint(this, name);
          recycleFilterChain(chain);
          return savepoint;
      }
  
      @Override
      public void setTransactionIsolation(int level) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setTransactionIsolation(this, level);
          recycleFilterChain(chain);
      }
  
      @Override
      public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setTypeMap(this, map);
          recycleFilterChain(chain);
      }
  
      public void setSchema(String schema) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setSchema(this, schema);
          recycleFilterChain(chain);
      }
  
      public String getSchema() throws SQLException {
          FilterChainImpl chain = createChain();
          String schema = chain.connection_getSchema(this);
          recycleFilterChain(chain);
          return schema;
      }
  
      public void abort(Executor executor) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_abort(this, executor);
          recycleFilterChain(chain);
      }
  
      public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
          FilterChainImpl chain = createChain();
          chain.connection_setNetworkTimeout(this, executor, milliseconds);
          recycleFilterChain(chain);
      }
  
      public int getNetworkTimeout() throws SQLException {
          FilterChainImpl chain = createChain();
          int networkTimeout = chain.connection_getNetworkTimeout(this);
          recycleFilterChain(chain);
          return networkTimeout;
      }
  
      @SuppressWarnings("unchecked")
      public <T> T unwrap(Class<T> iface) throws SQLException {
          if (iface == this.getClass() || iface == ConnectionProxy.class) {
              return (T) this;
          }
  
          return super.unwrap(iface);
      }
  
      @Override
      public TransactionInfo getTransactionInfo() {
          return transactionInfo;
      }
  
      @Override
      public int getCloseCount() {
          return closeCount;
      }
  
      @Override
      public long getLastValidateTimeMillis() {
          return lastValidateTimeMillis;
      }
  
      public void setLastValidateTimeMillis(long lastValidateTimeMillis) {
          this.lastValidateTimeMillis = lastValidateTimeMillis;
      }
  
      @Override
      public String toString() {
          return "ConnectionProxyImpl{" +
              "connectedTime=" + new java.sql.Timestamp(connectedTime) +
              ", closeCount=" + closeCount +
              ", lastValidateTimeMillis=" + new java.sql.Timestamp(lastValidateTimeMillis) +
              '}';
      }
  }
  