| /* |
| * 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.fluo.integration.client; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| |
| import org.apache.fluo.api.client.Loader; |
| import org.apache.fluo.api.client.LoaderExecutor; |
| import org.apache.fluo.api.client.Snapshot; |
| import org.apache.fluo.api.client.TransactionBase; |
| import org.apache.fluo.api.data.Column; |
| import org.apache.fluo.api.exceptions.AlreadySetException; |
| import org.apache.fluo.integration.ITBaseMini; |
| import org.junit.Assert; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.Timeout; |
| |
| public class LoaderExecutorIT extends ITBaseMini { |
| |
| public static class BadLoader implements Loader { |
| @Rule |
| public Timeout globalTimeout = Timeout.seconds(getTestTimeout()); |
| |
| @Override |
| public void load(TransactionBase tx, Context context) throws Exception { |
| tx.set("r", new Column("f", "q"), "v"); |
| // setting same thing should cause exception |
| tx.set("r", new Column("f", "q"), "v2"); |
| } |
| |
| } |
| |
| public static class CounterLoader implements Loader { |
| |
| private Long newValue; |
| |
| @Override |
| public void load(TransactionBase tx, Context context) throws Exception { |
| |
| // Increment a counter in Fluo |
| String row = "r"; |
| Column column = new Column("f", "q"); |
| String currentStringValue = tx.gets(row, column); |
| if (currentStringValue != null) { |
| Long currentValue = Long.parseLong(currentStringValue); |
| newValue = currentValue + 1; |
| } else { |
| newValue = 1L; |
| } |
| |
| tx.set(row, column, newValue.toString()); |
| } |
| |
| public Long getNewValue() { |
| return newValue; |
| } |
| } |
| |
| @Test |
| public void testLoaderFailure() { |
| LoaderExecutor le = client.newLoaderExecutor(); |
| le.execute(new BadLoader()); |
| |
| try { |
| le.close(); |
| Assert.fail(); |
| } catch (RuntimeException e) { |
| Assert.assertEquals(AlreadySetException.class, e.getCause().getClass()); |
| } |
| } |
| |
| @Test |
| public void testSubmit() throws Exception { |
| |
| LoaderExecutor le = client.newLoaderExecutor(); |
| |
| List<CompletableFuture<Loader>> futures = new ArrayList<>(); |
| |
| futures.add(le.submit("test", (tx, ctx) -> { |
| tx.set("1234", new Column("last", "date"), "20060101"); |
| })); |
| |
| futures.add(le.submit("test", (tx, ctx) -> { |
| tx.set("6789", new Column("last", "date"), "20050101"); |
| })); |
| |
| futures.add(le.submit("test", (tx, ctx) -> { |
| tx.set("0abc", new Column("last", "date"), "20070101"); |
| })); |
| |
| futures.add(le.submit("test", (tx, ctx) -> { |
| tx.set("ef01", new Column("last", "date"), "20040101"); |
| // setting same thing should cause exception |
| tx.set("ef01", new Column("last", "date"), "20040101"); |
| })); |
| |
| |
| // wait for transaction to commit |
| futures.get(0).get(); |
| try (Snapshot snap = client.newSnapshot()) { |
| Assert.assertEquals("20060101", snap.gets("1234", new Column("last", "date"))); |
| } |
| |
| // wait for transaction to commit |
| futures.get(1).get(); |
| try (Snapshot snap = client.newSnapshot()) { |
| Assert.assertEquals("20050101", snap.gets("6789", new Column("last", "date"))); |
| } |
| |
| le.close(); |
| |
| // wait for transaction to commit |
| futures.get(2).get(); |
| try (Snapshot snap = client.newSnapshot()) { |
| Assert.assertEquals("20070101", snap.gets("0abc", new Column("last", "date"))); |
| } |
| |
| try { |
| futures.get(3).get(); |
| Assert.fail(); |
| } catch (ExecutionException e) { |
| // expected from future |
| } |
| } |
| |
| @Test |
| public void testSubmitResult() throws Exception { |
| |
| LoaderExecutor le = client.newLoaderExecutor(); |
| // Each time the CounterLoader is executed, it increments a counter and makes that value |
| // available in the returned Future |
| CompletableFuture<CounterLoader> future = le.submit(new CounterLoader()); |
| Assert.assertEquals(future.get().getNewValue().longValue(), 1); |
| |
| // test with an alias parameter |
| future = le.submit("alias", new CounterLoader()); |
| Assert.assertEquals(future.get().getNewValue().longValue(), 2); |
| |
| // verify the Future can take on the Loader interface type |
| CompletableFuture<Loader> future2 = le.submit(new CounterLoader()); |
| Assert.assertEquals(((CounterLoader) future2.get()).getNewValue().longValue(), 3); |
| } |
| } |