| /* |
| * 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.phoenix.pherf.workload; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.phoenix.pherf.result.file.Extension; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.phoenix.pherf.PherfConstants; |
| import org.apache.phoenix.pherf.configuration.Query; |
| import org.apache.phoenix.pherf.util.PhoenixUtil; |
| |
| import difflib.DiffUtils; |
| import difflib.Patch; |
| |
| public class QueryVerifier { |
| private PhoenixUtil pUtil = PhoenixUtil.create(); |
| private static final Logger LOGGER = LoggerFactory.getLogger(QueryVerifier.class); |
| private boolean useTemporaryOutput; |
| private String directoryLocation; |
| |
| public QueryVerifier(boolean useTemporaryOutput) { |
| this.useTemporaryOutput = useTemporaryOutput; |
| this.directoryLocation = |
| this.useTemporaryOutput ? PherfConstants.EXPORT_TMP : PherfConstants.EXPORT_DIR; |
| |
| ensureBaseDirExists(); |
| } |
| |
| /** |
| * Export query resultSet to CSV file |
| * |
| * @param query |
| * @throws Exception |
| */ |
| public String exportCSV(Query query) throws Exception { |
| Connection conn = null; |
| PreparedStatement statement = null; |
| ResultSet rs = null; |
| String fileName = getFileName(query); |
| FileOutputStream fos = new FileOutputStream(fileName); |
| try { |
| conn = pUtil.getConnection(query.getTenantId()); |
| statement = conn.prepareStatement(query.getStatement()); |
| boolean isQuery = statement.execute(); |
| if (isQuery) { |
| rs = statement.executeQuery(); |
| int columnCount = rs.getMetaData().getColumnCount(); |
| while (rs.next()) { |
| for (int columnNum = 1; columnNum <= columnCount; columnNum++) { |
| fos.write((rs.getString(columnNum) + PherfConstants.RESULT_FILE_DELIMETER) |
| .getBytes()); |
| } |
| fos.write(PherfConstants.NEW_LINE.getBytes()); |
| } |
| } else { |
| conn.commit(); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } finally { |
| if (rs != null) rs.close(); |
| if (statement != null) statement.close(); |
| if (conn != null) conn.close(); |
| fos.flush(); |
| fos.close(); |
| } |
| return fileName; |
| } |
| |
| /** |
| * Do a diff between exported query results and temporary CSV file |
| * |
| * @param query |
| * @param newCSV |
| * @return |
| */ |
| public boolean doDiff(Query query, String newCSV) { |
| List<String> original = fileToLines(getCSVName(query, PherfConstants.EXPORT_DIR, "")); |
| List<String> newLines = fileToLines(newCSV); |
| |
| Patch patch = DiffUtils.diff(original, newLines); |
| if (patch.getDeltas().isEmpty()) { |
| LOGGER.info("Match: " + query.getId() + " with " + newCSV); |
| return true; |
| } else { |
| LOGGER.error("DIFF FAILED: " + query.getId() + " with " + newCSV); |
| return false; |
| } |
| } |
| |
| /** |
| * Helper method to load file |
| * |
| * @param filename |
| * @return |
| */ |
| private static List<String> fileToLines(String filename) { |
| List<String> lines = new LinkedList<String>(); |
| String line = ""; |
| try { |
| BufferedReader in = new BufferedReader(new FileReader(filename)); |
| while ((line = in.readLine()) != null) { |
| lines.add(line); |
| } |
| in.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| |
| return lines; |
| } |
| |
| /** |
| * Helper method to generate CSV file name |
| * |
| * @param query |
| * @return |
| * @throws FileNotFoundException |
| */ |
| private String getFileName(Query query) throws FileNotFoundException { |
| String tempExt = ""; |
| if (this.useTemporaryOutput) { |
| tempExt = "_" + java.util.UUID.randomUUID().toString(); |
| } |
| return getCSVName(query, this.directoryLocation, tempExt); |
| } |
| |
| private String getCSVName(Query query, String directory, String tempExt) { |
| String |
| csvFile = |
| directory + PherfConstants.PATH_SEPARATOR + query.getId() + tempExt + Extension.CSV |
| .toString(); |
| return csvFile; |
| } |
| |
| private void ensureBaseDirExists() { |
| File baseDir = new File(this.directoryLocation); |
| if (!baseDir.exists()) { |
| baseDir.mkdir(); |
| } |
| } |
| } |