| /* |
| * 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.drill.exec.physical.impl.scan.v3.lifecycle; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import org.apache.drill.categories.EvfTest; |
| import org.apache.drill.common.exceptions.UserException; |
| import org.apache.drill.exec.physical.impl.scan.RowBatchReader; |
| import org.apache.drill.exec.physical.impl.scan.v3.ManagedReader; |
| import org.apache.drill.exec.physical.impl.scan.v3.ScanLifecycleBuilder; |
| import org.apache.drill.exec.physical.impl.scan.v3.SchemaNegotiator; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Verifies proper handling of errors from a reader, including use of the |
| * scan and reader error contexts. |
| */ |
| @Category(EvfTest.class) |
| public class TestReaderErrors extends BaseTestScanLifecycle { |
| |
| @Test |
| public void testCtorError() { |
| ScanLifecycleBuilder builder = new ScanLifecycleBuilder(); |
| builder.errorContext(b -> b.addContext("Scan context")); |
| builder.readerFactory(new SingleReaderFactory() { |
| @Override |
| public ManagedReader next(SchemaNegotiator negotiator) { |
| return new FailingReader(negotiator, "ctor"); |
| } |
| }); |
| ScanLifecycle scan = buildScan(builder); |
| RowBatchReader reader = scan.nextReader(); |
| try { |
| reader.open(); |
| fail(); |
| } catch (UserException e) { |
| String msg = e.getMessage(); |
| assertTrue(msg.contains("Oops ctor")); |
| assertTrue(msg.contains("My custom context")); |
| assertTrue(msg.contains("Scan context")); |
| assertTrue(e.getCause() instanceof IllegalStateException); |
| } |
| scan.close(); |
| } |
| |
| @Test |
| public void testCtorUserError() { |
| ScanLifecycleBuilder builder = new ScanLifecycleBuilder(); |
| builder.errorContext(b -> b.addContext("Scan context")); |
| builder.readerFactory(new SingleReaderFactory() { |
| @Override |
| public ManagedReader next(SchemaNegotiator negotiator) { |
| return new FailingReader(negotiator, "ctor-u"); |
| } |
| }); |
| ScanLifecycle scan = buildScan(builder); |
| RowBatchReader reader = scan.nextReader(); |
| try { |
| reader.open(); |
| fail(); |
| } catch (UserException e) { |
| String msg = e.getMessage(); |
| assertTrue(msg.contains("Oops ctor")); |
| assertTrue(msg.contains("My custom context")); |
| assertTrue(msg.contains("Scan context")); |
| assertNull(e.getCause()); |
| } |
| scan.close(); |
| } |
| |
| @Test |
| public void testNextError() { |
| ScanLifecycleBuilder builder = new ScanLifecycleBuilder(); |
| builder.errorContext(b -> b.addContext("Scan context")); |
| builder.readerFactory(new SingleReaderFactory() { |
| @Override |
| public ManagedReader next(SchemaNegotiator negotiator) { |
| return new FailingReader(negotiator, "next"); |
| } |
| }); |
| ScanLifecycle scan = buildScan(builder); |
| RowBatchReader reader = scan.nextReader(); |
| assertTrue(reader.open()); |
| try { |
| reader.next(); |
| fail(); |
| } catch (UserException e) { |
| String msg = e.getMessage(); |
| assertTrue(msg.contains("Oops next")); |
| assertTrue(msg.contains("My custom context")); |
| assertTrue(msg.contains("Scan context")); |
| assertTrue(e.getCause() instanceof IllegalStateException); |
| } |
| scan.close(); |
| } |
| |
| @Test |
| public void testNextUserError() { |
| ScanLifecycleBuilder builder = new ScanLifecycleBuilder(); |
| builder.errorContext(b -> b.addContext("Scan context")); |
| builder.readerFactory(new SingleReaderFactory() { |
| @Override |
| public ManagedReader next(SchemaNegotiator negotiator) { |
| return new FailingReader(negotiator, "next-u"); |
| } |
| }); |
| ScanLifecycle scan = buildScan(builder); |
| RowBatchReader reader = scan.nextReader(); |
| assertTrue(reader.open()); |
| try { |
| reader.next(); |
| fail(); |
| } catch (UserException e) { |
| String msg = e.getMessage(); |
| assertTrue(msg.contains("Oops next")); |
| assertTrue(msg.contains("My custom context")); |
| assertTrue(msg.contains("Scan context")); |
| assertNull(e.getCause()); |
| } |
| scan.close(); |
| } |
| |
| @Test |
| public void testCloseError() { |
| ScanLifecycleBuilder builder = new ScanLifecycleBuilder(); |
| builder.errorContext(b -> b.addContext("Scan context")); |
| builder.readerFactory(new SingleReaderFactory() { |
| @Override |
| public ManagedReader next(SchemaNegotiator negotiator) { |
| return new FailingReader(negotiator, "close"); |
| } |
| }); |
| ScanLifecycle scan = buildScan(builder); |
| RowBatchReader reader = scan.nextReader(); |
| assertTrue(reader.open()); |
| assertFalse(reader.next()); |
| |
| try { |
| reader.close(); |
| fail(); |
| } catch (UserException e) { |
| // Expected |
| } |
| scan.close(); |
| } |
| |
| @Test |
| public void testCloseUserError() { |
| ScanLifecycleBuilder builder = new ScanLifecycleBuilder(); |
| builder.errorContext(b -> b.addContext("Scan context")); |
| builder.readerFactory(new SingleReaderFactory() { |
| @Override |
| public ManagedReader next(SchemaNegotiator negotiator) { |
| return new FailingReader(negotiator, "close-u"); |
| } |
| }); |
| ScanLifecycle scan = buildScan(builder); |
| RowBatchReader reader = scan.nextReader(); |
| assertTrue(reader.open()); |
| assertFalse(reader.next()); |
| |
| // User exceptions fail the query. Handles case of, say, a |
| // failed transaction, or something that tried, and failed, |
| // to update an external system. |
| try { |
| reader.close(); |
| fail(); |
| } catch (UserException e) { |
| String msg = e.getMessage(); |
| assertTrue(msg.contains("Oops close")); |
| assertTrue(msg.contains("My custom context")); |
| assertTrue(msg.contains("Scan context")); |
| assertNull(e.getCause()); |
| } |
| scan.close(); |
| } |
| } |