| /* |
| * 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.pig.test; |
| |
| import static org.apache.pig.newplan.logical.relational.LOTestHelper.newLOLoad; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.Properties; |
| |
| import org.apache.pig.FuncSpec; |
| import org.apache.pig.PigException; |
| import org.apache.pig.PigServer; |
| import org.apache.pig.ResourceSchema; |
| import org.apache.pig.StoreFuncInterface; |
| import org.apache.pig.backend.datastorage.DataStorage; |
| import org.apache.pig.backend.hadoop.datastorage.ConfigurationUtil; |
| import org.apache.pig.builtin.PigStorage; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.impl.PigContext; |
| import org.apache.pig.impl.io.FileLocalizer; |
| import org.apache.pig.impl.io.FileSpec; |
| import org.apache.pig.impl.logicalLayer.FrontendException; |
| import org.apache.pig.impl.plan.VisitorException; |
| import org.apache.pig.impl.util.LogUtils; |
| import org.apache.pig.newplan.logical.relational.LOLoad; |
| import org.apache.pig.newplan.logical.relational.LOStore; |
| import org.apache.pig.newplan.logical.relational.LogicalPlan; |
| import org.apache.pig.newplan.logical.visitor.InputOutputFileValidatorVisitor; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestInputOutputFileValidator { |
| private PigContext ctx; |
| private PigServer pig; |
| |
| @Before |
| public void setUp() throws Exception { |
| ctx = new PigContext(Util.getLocalTestMode(), new Properties()); |
| ctx.connect(); |
| pig = new PigServer(Util.getLocalTestMode()); |
| } |
| |
| @Test |
| public void testLocalModeInputPositive() throws Throwable { |
| String inputfile = generateTempFile().getAbsolutePath() ; |
| String outputfile = generateNonExistenceTempFile().getAbsolutePath() ; |
| |
| LogicalPlan plan = genNewLoadStorePlan(inputfile, outputfile, ctx.getFs()) ; |
| InputOutputFileValidatorVisitor visitor = new InputOutputFileValidatorVisitor(plan, ctx) ; |
| visitor.visit(); |
| } |
| |
| @Test(expected = VisitorException.class) //should expect an exception |
| public void testLocalModeNegative2() throws Throwable { |
| String inputfile = generateTempFile().getAbsolutePath() ; |
| String outputfile = generateTempFile().getAbsolutePath() ; |
| |
| LogicalPlan plan = genNewLoadStorePlan(inputfile, outputfile, ctx.getDfs()) ; |
| |
| InputOutputFileValidatorVisitor visitor = new InputOutputFileValidatorVisitor(plan, ctx) ; |
| visitor.visit() ; |
| } |
| |
| /** |
| * Testcase to ensure Input output validation allows store to a location |
| * that does not exist when using {@link PigServer#store(String, String)} |
| * @throws Exception |
| */ |
| @Test |
| public void testPigServerStore() throws Exception { |
| String input = "input.txt"; |
| String output= "output.txt"; |
| String data[] = new String[] {"hello\tworld"}; |
| try { |
| // reinitialize FileLocalizer for each mode |
| // this is need for the tmp file creation as part of |
| // PigServer.openIterator |
| FileLocalizer.setInitialized(false); |
| Util.deleteFile(pig.getPigContext(), input); |
| Util.deleteFile(pig.getPigContext(), output); |
| Util.createInputFile(pig.getPigContext(), input, data); |
| pig.registerQuery("a = load '" + input + "';"); |
| pig.store("a", output); |
| pig.registerQuery("b = load '" + output + "';"); |
| Iterator<Tuple> it = pig.openIterator("b"); |
| Tuple t = it.next(); |
| assertEquals("hello", t.get(0).toString()); |
| assertEquals("world", t.get(1).toString()); |
| assertFalse(it.hasNext()); |
| } finally { |
| Util.deleteFile(pig.getPigContext(), input); |
| Util.deleteFile(pig.getPigContext(), output); |
| } |
| } |
| |
| /** |
| * Test case to test that Input output file validation catches the case |
| * where the output file exists when using |
| * {@link PigServer#store(String, String)} |
| * @throws Exception |
| */ |
| @Test(expected = PigException.class) |
| public void testPigServerStoreNeg() throws Exception { |
| String input = "input.txt"; |
| String output= "output.txt"; |
| String data[] = new String[] {"hello\tworld"}; |
| try { |
| Util.deleteFile(pig.getPigContext(), input); |
| Util.deleteFile(pig.getPigContext(), output); |
| Util.createInputFile(pig.getPigContext(), input, data); |
| Util.createInputFile(pig.getPigContext(), output, data); |
| try { |
| pig.registerQuery("a = load '" + input + "';"); |
| pig.store("a", output); |
| } catch (Exception e) { |
| assertEquals(6000, LogUtils.getPigException(e).getErrorCode()); |
| throw e; |
| } |
| } finally { |
| Util.deleteFile(pig.getPigContext(), input); |
| Util.deleteFile(pig.getPigContext(), output); |
| } |
| |
| } |
| |
| private LogicalPlan genNewLoadStorePlan(String inputFile, |
| String outputFile, DataStorage dfs) |
| throws Throwable { |
| LogicalPlan plan = new LogicalPlan() ; |
| FileSpec filespec1 = |
| new FileSpec(inputFile, new FuncSpec("org.apache.pig.builtin.PigStorage")) ; |
| FileSpec filespec2 = |
| new FileSpec(outputFile, new FuncSpec("org.apache.pig.builtin.PigStorage")); |
| LOLoad load = newLOLoad( filespec1, null, plan, |
| ConfigurationUtil.toConfiguration(dfs.getConfiguration())) ; |
| LOStore store = new LOStore(plan, filespec2, (StoreFuncInterface)PigContext.instantiateFuncFromSpec(filespec2.getFuncSpec()), null) ; |
| |
| plan.add(load) ; |
| plan.add(store) ; |
| |
| plan.connect(load, store) ; |
| |
| return plan ; |
| } |
| |
| private File generateTempFile() throws Throwable { |
| File fp1 = File.createTempFile("file", ".txt") ; |
| BufferedWriter bw = new BufferedWriter(new FileWriter(fp1)) ; |
| bw.write("hohoho") ; |
| bw.close() ; |
| fp1.deleteOnExit() ; |
| return fp1 ; |
| } |
| |
| private File generateNonExistenceTempFile() throws Throwable { |
| File fp1 = File.createTempFile("file", ".txt") ; |
| fp1.delete() ; |
| return fp1 ; |
| } |
| |
| public static class DummyStorer extends PigStorage{ |
| @Override |
| public void checkSchema(ResourceSchema s) throws IOException { |
| throw new FrontendException("Exception from DummyStorer.", 1115); |
| } |
| } |
| } |