| /* |
| * 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.flink.statefun.flink.core; |
| |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import org.apache.flink.api.java.utils.ParameterTool; |
| import org.apache.flink.configuration.Configuration; |
| import org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders; |
| import org.apache.flink.statefun.flink.core.feedback.FeedbackKey; |
| import org.apache.flink.statefun.flink.core.message.Message; |
| import org.apache.flink.statefun.flink.core.translation.FlinkUniverse; |
| import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; |
| import org.apache.flink.util.FlinkUserCodeClassLoader; |
| |
| public class StatefulFunctionsJob { |
| |
| private static final AtomicInteger FEEDBACK_INVOCATION_ID_SEQ = new AtomicInteger(); |
| |
| public static void main(String... args) throws Exception { |
| ParameterTool parameterTool = ParameterTool.fromArgs(args); |
| Map<String, String> globalConfigurations = parameterTool.toMap(); |
| |
| StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); |
| |
| Configuration flinkConfig = FlinkConfigExtractor.reflectivelyExtractFromEnv(env); |
| StatefulFunctionsConfigValidator.validate(flinkConfig); |
| |
| StatefulFunctionsConfig stateFunConfig = |
| StatefulFunctionsConfig.fromFlinkConfiguration(flinkConfig); |
| stateFunConfig.addAllGlobalConfigurations(globalConfigurations); |
| stateFunConfig.setProvider(new StatefulFunctionsUniverses.ClassPathUniverseProvider()); |
| |
| main(env, stateFunConfig); |
| } |
| |
| /** |
| * The main entry point for executing a stateful functions application. |
| * |
| * @param env The StreamExecutionEnvironment under which the application will be bound. |
| * @param stateFunConfig The stateful function specific configurations for the deployment. |
| */ |
| public static void main(StreamExecutionEnvironment env, StatefulFunctionsConfig stateFunConfig) |
| throws Exception { |
| Objects.requireNonNull(env); |
| Objects.requireNonNull(stateFunConfig); |
| |
| setDefaultContextClassLoaderIfAbsent(); |
| |
| env.getConfig().enableObjectReuse(); |
| |
| final StatefulFunctionsUniverse statefulFunctionsUniverse = |
| StatefulFunctionsUniverses.get( |
| Thread.currentThread().getContextClassLoader(), stateFunConfig); |
| |
| final StatefulFunctionsUniverseValidator statefulFunctionsUniverseValidator = |
| new StatefulFunctionsUniverseValidator(); |
| statefulFunctionsUniverseValidator.validate(statefulFunctionsUniverse); |
| |
| FeedbackKey<Message> feedbackKey = |
| new FeedbackKey<>("statefun-pipeline", FEEDBACK_INVOCATION_ID_SEQ.incrementAndGet()); |
| FlinkUniverse flinkUniverse = |
| new FlinkUniverse(feedbackKey, stateFunConfig, statefulFunctionsUniverse); |
| flinkUniverse.configure(env); |
| |
| env.execute(stateFunConfig.getFlinkJobName()); |
| } |
| |
| private static void setDefaultContextClassLoaderIfAbsent() { |
| ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); |
| if (classLoader == null) { |
| URLClassLoader flinkClassLoader = |
| FlinkUserCodeClassLoaders.parentFirst( |
| new URL[0], |
| StatefulFunctionsJob.class.getClassLoader(), |
| FlinkUserCodeClassLoader.NOOP_EXCEPTION_HANDLER, |
| false); |
| Thread.currentThread().setContextClassLoader(flinkClassLoader); |
| } |
| } |
| } |