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ASF GitHub Bot logged work on KNOX-1742: ---------------------------------------- Author: ASF GitHub Bot Created on: 21/Jan/20 01:42 Start Date: 21/Jan/20 01:42 Worklog Time Spent: 10m Work Description: risdenk commented on pull request #241: KNOX-1742 - Simple SQL Client in KnoxShell for access to JDBC sources URL: https://github.com/apache/knox/pull/241#discussion_r368778336 ########## File path: gateway-shell/src/main/java/org/apache/knox/gateway/shell/jdbc/KnoxLine.java ########## @@ -0,0 +1,213 @@ +/* + * 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.knox.gateway.shell.jdbc; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.sql.Statement; +import java.util.HashMap; +import java.util.Map; + +import org.apache.knox.gateway.shell.CredentialCollectionException; +import org.apache.knox.gateway.shell.Credentials; +import org.apache.knox.gateway.shell.KnoxDataSource; +import org.apache.knox.gateway.shell.KnoxSession; +import org.apache.knox.gateway.shell.table.KnoxShellTable; + +public class KnoxLine { + String user; + String pass; + KnoxDataSource datasource; + Connection conn; + + public void execute(String[] args) + throws ClassNotFoundException, SQLException, CredentialCollectionException { + + Runtime.getRuntime().addShutdownHook(new Thread() { + @Override + public void run() { + System.out.println("Closing any open connections ..."); + closeConnection(); + } + }); + executeShell(); + } + + private void executeShell() { + String sql; + + System.out.println(" _ _ _ "); + System.out.println("| | ___ __ _____ _| (_)_ __ ___ "); + System.out.println("| |/ / '_ \\ / _ \\ \\/ / | | '_ \\ / _ \\"); + System.out.println("| <| | | | (_) > <| | | | | | __/"); + System.out.println("|_|\\_\\_| |_|\\___/_/\\_\\_|_|_| |_|\\\\__|"); + System.out.println("powered by Apache Knox"); + System.out.println(""); + System.out.println(""); + + while(true) { + sql = System.console().readLine("knoxline> "); + if (sql != null && !sql.isEmpty()) { + if (sql.startsWith(":ds") || sql.startsWith(":datasource")) { + try { + processDataSourceCommand(sql); + } catch (CredentialCollectionException | SQLException e) { + e.printStackTrace(); + } + } + else { + // Configure JDBC connection + if (datasource != null) { + System.out.println(sql); + try (Statement statement = conn.createStatement()) { + if (statement.execute(sql)) { + try (ResultSet resultSet = statement.getResultSet()) { + KnoxShellTable table = KnoxShellTable.builder().jdbc().resultSet(resultSet); + System.out.println(table.toString()); + System.out.println("\nRows: " + table.getRows().size() + "\n"); + } + } + } + catch(SQLException e) { + //e.printStackTrace() + System.out.println("SQL Exception encountered... " + e.getMessage()); + // if (e.getMessage().contains("org.apache.thrift.transport.TTransportException")) { + // System.out.println("reconnecting... "); + // connection = DriverManager.getConnection( connectionString, user, pass ); Review comment: Commented out code? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 374774) > Simple SQL Client in KnoxShell for access to JDBC datasources > ------------------------------------------------------------- > > Key: KNOX-1742 > URL: https://issues.apache.org/jira/browse/KNOX-1742 > Project: Apache Knox > Issue Type: Improvement > Components: KnoxShell > Reporter: Larry McCay > Assignee: Larry McCay > Priority: Major > Fix For: 1.5.0 > > Time Spent: 0.5h > Remaining Estimate: 0h > > Let's take the following wiki article example and make it an actual feature > of KnoxShell: > https://cwiki.apache.org/confluence/display/KNOX/SQL+Client+Example+using+KnoxShell+in+Apache+Knox > In order to make it a generic feature, we will need to do a number of things: > # add a lib directory > # add the HiveDriver - *maybe* - perhaps it is better to have the user > download the right version? > # add commons-logging jar to lib directory > # add a real table rendering class to the KnoxShell rather than embedded in > the SQL client script - so that other features and scripts can use it to > render results > # add the knoxline.sh and hive2.groovy script to bin directory -- This message was sent by Atlassian Jira (v8.3.4#803005)