| /* |
| * 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. |
| */ |
| |
| // Log Event Prototype |
| // From event_viewer.jsp |
| package org.apache.hadoop.chukwa.extraction.engine.datasource.database; |
| |
| |
| import java.sql.Connection; |
| import java.sql.ResultSet; |
| import java.sql.ResultSetMetaData; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.text.SimpleDateFormat; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.TreeMap; |
| import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord; |
| import org.apache.hadoop.chukwa.extraction.engine.Record; |
| import org.apache.hadoop.chukwa.extraction.engine.SearchResult; |
| import org.apache.hadoop.chukwa.extraction.engine.Token; |
| import org.apache.hadoop.chukwa.extraction.engine.datasource.DataSource; |
| import org.apache.hadoop.chukwa.extraction.engine.datasource.DataSourceException; |
| import org.apache.hadoop.chukwa.util.ExceptionUtil; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| //import org.apache.hadoop.chukwa.hicc.ClusterConfig; |
| |
| public class DatabaseDS implements DataSource { |
| private static final Log log = LogFactory.getLog(DatabaseDS.class); |
| |
| @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = |
| "SQL_NONCONSTANT_STRING_PASSED_TO_EXECUTE", |
| justification = "Dynamic based upon tables in the database") |
| public SearchResult search(SearchResult result, String cluster, |
| String dataSource, long t0, long t1, String filter, Token token) |
| throws DataSourceException { |
| SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd kk:mm:ss"); |
| String timeField = null; |
| TreeMap<Long, List<Record>> records = result.getRecords(); |
| |
| if (cluster == null) { |
| cluster = "demo"; |
| } |
| |
| if (dataSource.equalsIgnoreCase("MRJob")) { |
| timeField = "LAUNCH_TIME"; |
| } else if (dataSource.equalsIgnoreCase("HodJob")) { |
| timeField = "StartTime"; |
| } else { |
| timeField = "timestamp"; |
| } |
| String startS = formatter.format(t0); |
| String endS = formatter.format(t1); |
| Statement stmt = null; |
| ResultSet rs = null; |
| try { |
| String dateclause = timeField + " >= '" + startS + "' and " + timeField |
| + " <= '" + endS + "'"; |
| |
| // ClusterConfig cc = new ClusterConfig(); |
| String jdbc = ""; // cc.getURL(cluster); |
| |
| Connection conn = org.apache.hadoop.chukwa.util.DriverManagerUtil.getConnection(jdbc); |
| |
| stmt = conn.createStatement(); |
| String query = ""; |
| query = "select * from " + dataSource + " where " + dateclause + ";"; |
| rs = stmt.executeQuery(query); |
| if (stmt.execute(query)) { |
| rs = stmt.getResultSet(); |
| ResultSetMetaData rmeta = rs.getMetaData(); |
| int col = rmeta.getColumnCount(); |
| while (rs.next()) { |
| ChukwaRecord event = new ChukwaRecord(); |
| StringBuilder cell = new StringBuilder();; |
| long timestamp = 0; |
| |
| for (int i = 1; i < col; i++) { |
| String value = rs.getString(i); |
| if (value != null) { |
| cell.append(" "); |
| cell.append(rmeta.getColumnName(i)); |
| cell.append(":"); |
| cell.append(value); |
| } |
| if (rmeta.getColumnName(i).equals(timeField)) { |
| timestamp = rs.getLong(i); |
| event.setTime(timestamp); |
| } |
| } |
| boolean isValid = false; |
| if (filter == null || filter.equals("")) { |
| isValid = true; |
| } else if (cell.indexOf(filter) > 0) { |
| isValid = true; |
| } |
| if (!isValid) { |
| continue; |
| } |
| |
| event.add(Record.bodyField, cell.toString()); |
| event.add(Record.sourceField, cluster + "." + dataSource); |
| if (records.containsKey(timestamp)) { |
| records.get(timestamp).add(event); |
| } else { |
| List<Record> list = new LinkedList<Record>(); |
| list.add(event); |
| records.put(event.getTime(), list); |
| } |
| } |
| } |
| } catch (SQLException e) { |
| e.printStackTrace(); |
| throw new DataSourceException(e); |
| } finally { |
| if (rs != null) { |
| try { |
| rs.close(); |
| } catch (SQLException sqlEx) { |
| log.debug(ExceptionUtil.getStackTrace(sqlEx)); |
| } |
| rs = null; |
| } |
| if (stmt != null) { |
| try { |
| stmt.close(); |
| } catch (SQLException sqlEx) { |
| log.debug(ExceptionUtil.getStackTrace(sqlEx)); |
| } |
| stmt = null; |
| } |
| } |
| return result; |
| } |
| |
| public boolean isThreadSafe() { |
| return true; |
| } |
| |
| } |