| /* |
| * 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.tinkerpop.gremlin.groovy.engine; |
| |
| import org.apache.commons.lang3.concurrent.BasicThreadFactory; |
| import org.apache.tinkerpop.gremlin.LoadGraphWith; |
| import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource; |
| import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerFactory; |
| import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph; |
| import org.hamcrest.Matchers; |
| import org.junit.Ignore; |
| import org.junit.Test; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import static org.hamcrest.core.StringStartsWith.startsWith; |
| import static org.junit.Assert.assertEquals; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.fail; |
| |
| /** |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public class GremlinExecutorOverGraphTest { |
| private final BasicThreadFactory testingThreadFactory = new BasicThreadFactory.Builder().namingPattern("test-gremlin-executor-%d").build(); |
| |
| @Test |
| public void shouldOverrideTimeoutWithinScript() throws Exception { |
| final TinkerGraph graph = TinkerFactory.createModern(); |
| final GraphTraversalSource g = graph.traversal(); |
| |
| final ExecutorService evalExecutor = Executors.newSingleThreadExecutor(testingThreadFactory); |
| final GremlinExecutor gremlinExecutor = GremlinExecutor.build() |
| .evaluationTimeout(60000) |
| .afterSuccess(b -> { |
| final GraphTraversalSource ig = (GraphTraversalSource) b.get("g"); |
| if (ig.getGraph().features().graph().supportsTransactions()) |
| ig.tx().commit(); |
| }) |
| .executorService(evalExecutor).create(); |
| |
| final Map<String,Object> bindings = new HashMap<>(); |
| bindings.put("g", g); |
| |
| try { |
| gremlinExecutor.eval("g.with('evaluationTimeout',100).V().repeat(both()).toList()", bindings).get(); |
| fail("Should have timed out"); |
| } catch (ExecutionException ex) { |
| // should die in 100ms not 60000 |
| assertThat(ex.getCause().getMessage(), startsWith("Evaluation exceeded the configured 'evaluationTimeout' threshold of 100 ms")); |
| } |
| } |
| |
| @Test |
| public void shouldAllowTraversalToIterateInDifferentThreadThanOriginallyEvaluatedWithAutoCommit() throws Exception { |
| final TinkerGraph graph = TinkerFactory.createModern(); |
| final GraphTraversalSource g = graph.traversal(); |
| |
| // this test sort of simulates Gremlin Server interaction where a Traversal is eval'd in one Thread, but |
| // then iterated in another. note that Gremlin Server configures the script engine to auto-commit |
| // after evaluation. this basically tests the state of the Gremlin Server GremlinExecutor when |
| // being used in sessionless mode |
| final ExecutorService evalExecutor = Executors.newSingleThreadExecutor(testingThreadFactory); |
| final GremlinExecutor gremlinExecutor = GremlinExecutor.build() |
| .afterSuccess(b -> { |
| final GraphTraversalSource ig = (GraphTraversalSource) b.get("g"); |
| if (ig.getGraph().features().graph().supportsTransactions()) |
| ig.tx().commit(); |
| }) |
| .executorService(evalExecutor).create(); |
| |
| final Map<String,Object> bindings = new HashMap<>(); |
| bindings.put("g", g); |
| |
| final AtomicInteger vertexCount = new AtomicInteger(0); |
| |
| final ExecutorService iterationExecutor = Executors.newSingleThreadExecutor(testingThreadFactory); |
| gremlinExecutor.eval("g.V().out()", bindings).thenAcceptAsync(o -> { |
| final Iterator itty = (Iterator) o; |
| itty.forEachRemaining(v -> vertexCount.incrementAndGet()); |
| }, iterationExecutor).join(); |
| |
| assertEquals(6, vertexCount.get()); |
| |
| gremlinExecutor.close(); |
| evalExecutor.shutdown(); |
| evalExecutor.awaitTermination(30000, TimeUnit.MILLISECONDS); |
| iterationExecutor.shutdown(); |
| iterationExecutor.awaitTermination(30000, TimeUnit.MILLISECONDS); |
| } |
| |
| @Test |
| @LoadGraphWith(LoadGraphWith.GraphData.MODERN) |
| public void shouldAllowTraversalToIterateInDifferentThreadThanOriginallyEvaluatedWithoutAutoCommit() throws Exception { |
| final TinkerGraph graph = TinkerFactory.createModern(); |
| final GraphTraversalSource g = graph.traversal(); |
| |
| // this test sort of simulates Gremlin Server interaction where a Traversal is eval'd in one Thread, but |
| // then iterated in another. this basically tests the state of the Gremlin Server GremlinExecutor when |
| // being used in session mode |
| final ExecutorService evalExecutor = Executors.newSingleThreadExecutor(testingThreadFactory); |
| final GremlinExecutor gremlinExecutor = GremlinExecutor.build().executorService(evalExecutor).create(); |
| |
| final Map<String,Object> bindings = new HashMap<>(); |
| bindings.put("g", g); |
| |
| final AtomicInteger vertexCount = new AtomicInteger(0); |
| |
| final ExecutorService iterationExecutor = Executors.newSingleThreadExecutor(testingThreadFactory); |
| gremlinExecutor.eval("g.V().out()", bindings).thenAcceptAsync(o -> { |
| final Iterator itty = (Iterator) o; |
| itty.forEachRemaining(v -> vertexCount.incrementAndGet()); |
| }, iterationExecutor).join(); |
| |
| assertEquals(6, vertexCount.get()); |
| |
| gremlinExecutor.close(); |
| evalExecutor.shutdown(); |
| evalExecutor.awaitTermination(30000, TimeUnit.MILLISECONDS); |
| iterationExecutor.shutdown(); |
| iterationExecutor.awaitTermination(30000, TimeUnit.MILLISECONDS); |
| } |
| } |