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[Improve] [Seatunnel-Engine] remove
seatunnel-api from engine stora…
…ge. (#3834) * remove `seatunnel-api` from engine storage
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...nel-engine-common/src/main/java/org/apache/seatunnel/engine/common/utils/FactoryUtil.java
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| @@ -0,0 +1,82 @@ | ||
| /* | ||
| * 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. | ||
| * | ||
| */ | ||
|
|
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| package org.apache.seatunnel.engine.common.utils; | ||
|
|
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| import org.apache.seatunnel.engine.common.exception.SeaTunnelEngineException; | ||
|
|
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| import lombok.extern.slf4j.Slf4j; | ||
|
|
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| import java.lang.reflect.InvocationTargetException; | ||
| import java.util.LinkedList; | ||
| import java.util.List; | ||
| import java.util.ServiceConfigurationError; | ||
| import java.util.ServiceLoader; | ||
| import java.util.stream.Collectors; | ||
|
|
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| @Slf4j | ||
| public class FactoryUtil<T> { | ||
|
|
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| public static <T> T discoverFactory(ClassLoader classLoader, Class<T> factoryClass, String factoryIdentifier) { | ||
| try { | ||
| final List<T> result = new LinkedList<>(); | ||
| ServiceLoader.load(factoryClass, classLoader) | ||
| .iterator() | ||
| .forEachRemaining(result::add); | ||
|
|
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| List<T> foundFactories = result.stream().filter(f -> factoryClass.isAssignableFrom(f.getClass())) | ||
| .filter(t -> { | ||
| try { | ||
| return t.getClass().getMethod("factoryIdentifier").invoke(t).equals(factoryIdentifier); | ||
| } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) { | ||
| throw new SeaTunnelEngineException("Failed to call factoryIdentifier method."); | ||
| } | ||
| }) | ||
| .collect(Collectors.toList()); | ||
|
|
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| if (foundFactories.isEmpty()) { | ||
| throw new SeaTunnelEngineException( | ||
| String.format( | ||
| "Could not find any factories that implement '%s' in the classpath.", | ||
| factoryClass.getName())); | ||
| } | ||
|
|
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| if (foundFactories.size() > 1) { | ||
| throw new SeaTunnelEngineException( | ||
| String.format( | ||
| "Multiple factories for identifier '%s' that implement '%s' found in the classpath.\n\n" | ||
| + "Ambiguous factory classes are:\n\n" | ||
| + "%s", | ||
| factoryIdentifier, | ||
| factoryClass.getName(), | ||
| foundFactories.stream() | ||
| .map(f -> f.getClass().getName()) | ||
| .sorted() | ||
| .collect(Collectors.joining("\n")))); | ||
| } | ||
|
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| return foundFactories.get(0); | ||
| } catch (ServiceConfigurationError e) { | ||
| log.error("Could not load service provider for factories.", e); | ||
| throw new SeaTunnelEngineException("Could not load service provider for factories.", e); | ||
| } | ||
| } | ||
|
|
||
| } |
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