content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to you 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 org.apache.calcite.adapter.splunk;
  
  import org.apache.calcite.adapter.splunk.search.SearchResultListener;
  import org.apache.calcite.adapter.splunk.search.SplunkConnection;
  import org.apache.calcite.adapter.splunk.search.SplunkConnectionImpl;
  import org.apache.calcite.avatica.DriverVersion;
  import org.apache.calcite.jdbc.CalciteConnection;
  import org.apache.calcite.linq4j.Enumerator;
  import org.apache.calcite.schema.SchemaPlus;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.net.URI;
  import java.net.URL;
  import java.sql.Connection;
  import java.sql.SQLException;
  import java.util.List;
  import java.util.Map;
  import java.util.Properties;
  
  /**
   * JDBC driver for Splunk.
   *
   * <p>It accepts connect strings that start with "jdbc:splunk:".
   */
  public class SplunkDriver extends org.apache.calcite.jdbc.Driver {
    protected SplunkDriver() {
      super();
    }
  
    static {
      new SplunkDriver().register();
    }
  
    @Override protected String getConnectStringPrefix() {
      return "jdbc:splunk:";
    }
  
    @Override protected DriverVersion createDriverVersion() {
      return new SplunkDriverVersion();
    }
  
    @Override public Connection connect(String url, Properties info)
        throws SQLException {
      Connection connection = super.connect(url, info);
      CalciteConnection calciteConnection = (CalciteConnection) connection;
      SplunkConnection splunkConnection;
      try {
        String url1 = info.getProperty("url");
        if (url1 == null) {
          throw new IllegalArgumentException(
              "Must specify 'url' property");
        }
        if (url1.equals("mock")) {
          splunkConnection = new MockSplunkConnection();
        } else {
          String user = info.getProperty("user");
          if (user == null) {
            throw new IllegalArgumentException(
                "Must specify 'user' property");
          }
          String password = info.getProperty("password");
          if (password == null) {
            throw new IllegalArgumentException(
                "Must specify 'password' property");
          }
          URL url2 = URI.create(url1).toURL();
          splunkConnection = new SplunkConnectionImpl(url2, user, password);
        }
      } catch (Exception e) {
        throw new SQLException("Cannot connect", e);
      }
      final SchemaPlus rootSchema = calciteConnection.getRootSchema();
      rootSchema.add("splunk", new SplunkSchema(splunkConnection));
  
      return connection;
    }
  
    /** Connection that looks up responses from a static map. */
    @SuppressWarnings("unused")
    private static class MockSplunkConnection implements SplunkConnection {
      @Override public Enumerator<Object> getSearchResultEnumerator(String search,
          Map<String, String> otherArgs, @Nullable List<String> fieldList) {
        throw new NullPointerException();
      }
  
      @Override public void getSearchResults(String search,
          Map<String, String> otherArgs,
          @Nullable List<String> fieldList, SearchResultListener srl) {
        throw new UnsupportedOperationException();
      }
    }
  
    /** Connection that records requests and responses. */
    @SuppressWarnings("unused")
    private static class WrappingSplunkConnection implements SplunkConnection {
      WrappingSplunkConnection(SplunkConnection connection) {
      }
  
      @Override public void getSearchResults(String search,
          Map<String, String> otherArgs,
          @Nullable List<String> fieldList, SearchResultListener srl) {
        System.out.println("search='" + search
            + "', otherArgs=" + otherArgs
            + ", fieldList='" + fieldList);
      }
  
      @Override public Enumerator<Object> getSearchResultEnumerator(String search,
          Map<String, String> otherArgs, @Nullable List<String> fieldList) {
        throw new UnsupportedOperationException();
      }
    }
  }
  