| /** |
| * 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.sqoop.mapreduce; |
| |
| import java.sql.SQLException; |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.util.List; |
| import org.apache.sqoop.fi.ProbabilityModel; |
| import org.apache.sqoop.lib.SqoopRecord; |
| import java.util.Random; |
| /** |
| * This aspect injects faults into the SQLServerExportDBExecThread |
| * which handles executing the write batch to the sql server database |
| */ |
| public privileged aspect SqlServerExportAspect { |
| |
| // Before adding to these, note that every sqlstate must have a |
| // corresponding exceptionMsg and vice versa!!!!!! |
| private static String[] exceptionMsg = { "Connection reset", |
| "deadlocked on thread", |
| "Connection initialization error", |
| "Connection link failure" |
| }; |
| |
| private static String[] sqlStates = { "08S01", // covers SQL error states |
| // 40143 40197, 40501, 40613, |
| // 10054, 10053,64 |
| "40001", // SQL Error 1205, |
| // deadlock victim |
| "01000", // SQL Error 233, |
| // connection init failure |
| "08001", // 10060 connection link |
| // init failure |
| }; |
| |
| private static boolean allFaults = false; |
| |
| // export pointcut and advice |
| pointcut ExportExecuteStatementPointcut(SQLServerExportDBExecThread thread, |
| PreparedStatement stmt, |
| List<SqoopRecord> records): |
| execution (protected void SQLServerAsyncDBExecThread.executeStatement( |
| PreparedStatement, List<SqoopRecord>)) |
| && target(thread) && args(stmt, records); |
| |
| void around(SQLServerExportDBExecThread thread,PreparedStatement stmt, |
| List<SqoopRecord> records) throws SQLException: |
| ExportExecuteStatementPointcut(thread, stmt, records) { |
| |
| |
| Random random = new Random(); |
| |
| int exceptionToThrow = 0; |
| if (allFaults) |
| { |
| exceptionToThrow = random.nextInt(sqlStates.length); |
| } |
| thread.LOG.info("exception to be thrown is " + exceptionToThrow); |
| |
| // start the method like normal, execute the batch |
| Connection conn = thread.getConnection(); |
| try { |
| // throw a SQL exception before/during the execute |
| if (ProbabilityModel.injectCriteria("SQLServerExportDBExecThread")) { |
| thread.LOG.info("throwing " + exceptionMsg[exceptionToThrow] |
| + "exception after execute and before commit"); |
| conn.close(); |
| throw new SQLException(exceptionMsg[exceptionToThrow], |
| sqlStates[exceptionToThrow]); |
| } |
| stmt.executeBatch(); |
| } catch (SQLException execSqlEx) { |
| thread.LOG.warn("Error executing statement: " + execSqlEx); |
| //conn.rollback(); |
| if (thread.failedCommit && |
| thread.canIgnoreForFailedCommit(execSqlEx.getSQLState())){ |
| thread.LOG.info("Ignoring error after failed commit"); |
| } else { |
| throw execSqlEx; |
| } |
| } |
| |
| // If the batch of records is executed successfully, then commit before |
| // processing the next batch of records |
| try { |
| if (ProbabilityModel.injectCriteria("SQLServerExportDBExecThread")) { |
| thread.LOG.info("throwing " + exceptionMsg[exceptionToThrow] |
| + "exception during commit"); |
| conn.close(); |
| throw new SQLException(exceptionMsg[exceptionToThrow], |
| sqlStates[exceptionToThrow]); |
| } |
| conn.commit(); |
| thread.failedCommit = false; |
| } catch (SQLException commitSqlEx) { |
| thread.LOG.warn("Error while committing transactions: " + commitSqlEx); |
| thread.failedCommit = true; |
| throw commitSqlEx; |
| } |
| } |
| } |