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Flink supports udf function #5067
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116 changes: 116 additions & 0 deletions
116
...re/src/main/java/org/apache/linkis/engineconnplugin/flink/client/utils/FlinkUdfUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * 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.linkis.engineconnplugin.flink.client.utils; | ||
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| import org.apache.flink.configuration.Configuration; | ||
| import org.apache.flink.configuration.PipelineOptions; | ||
| import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; | ||
| import org.apache.flink.table.functions.UserDefinedFunction; | ||
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| import java.lang.reflect.Field; | ||
| import java.lang.reflect.Method; | ||
| import java.net.URL; | ||
| import java.net.URLClassLoader; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.regex.Matcher; | ||
| import java.util.regex.Pattern; | ||
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| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| public class FlinkUdfUtils { | ||
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| private static final Logger logger = LoggerFactory.getLogger(FlinkUdfUtils.class); | ||
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| private static final String CREATE_TEMP_FUNCTION_PATTERN = | ||
| "create\\s+temporary\\s+function\\s+(\\w+)\\s+as\\s+\"(.*?)\""; | ||
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| private static final String CREATE_TEMP_FUNCTION_SQL = | ||
| "CREATE TEMPORARY FUNCTION IF NOT EXISTS %s AS '%s' "; | ||
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| public static void addFlinkPipelineClasspaths(StreamExecutionEnvironment env, String path) { | ||
| logger.info("Flink udf start add pipeline classpaths, jar path: {}", path); | ||
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| try { | ||
| Field configuration = StreamExecutionEnvironment.class.getDeclaredField("configuration"); | ||
| configuration.setAccessible(true); | ||
| Configuration conf = (Configuration) configuration.get(env); | ||
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| Field confData = Configuration.class.getDeclaredField("confData"); | ||
| confData.setAccessible(true); | ||
| Map<String, Object> map = (Map<String, Object>) confData.get(conf); | ||
| List<String> jarList = new ArrayList<>(); | ||
| jarList.add(path); | ||
| map.put(PipelineOptions.CLASSPATHS.key(), jarList); | ||
| } catch (Exception e) { | ||
| logger.warn("Flink udf add pipeline classpaths failed", e); | ||
| } | ||
| } | ||
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| public static void loadJar(String jarPath) { | ||
| logger.info("Flink udf URLClassLoader start loadJar: {}", jarPath); | ||
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| Method method = null; | ||
| Boolean accessible = null; | ||
| try { | ||
| method = URLClassLoader.class.getDeclaredMethod("addURL", URL.class); | ||
| accessible = method.isAccessible(); | ||
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| if (accessible == false) { | ||
| method.setAccessible(true); | ||
| } | ||
| URLClassLoader classLoader = (URLClassLoader) ClassLoader.getSystemClassLoader(); | ||
| method.invoke(classLoader, new URL(jarPath)); | ||
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| } catch (Exception e) { | ||
| logger.warn("Flink udf URLClassLoader loadJar failed", e); | ||
| } finally { | ||
| if (accessible != null) { | ||
| method.setAccessible(accessible); | ||
| } | ||
| } | ||
| } | ||
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| public static String extractUdfClass(String statement) { | ||
| Pattern pattern = Pattern.compile(CREATE_TEMP_FUNCTION_PATTERN); | ||
| Matcher matcher = pattern.matcher(statement); | ||
| if (matcher.find() && matcher.groupCount() >= 2) { | ||
| return matcher.group(2); | ||
| } | ||
| return ""; | ||
| } | ||
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| public static boolean isFlinkUdf(ClassLoader classLoader, String className) { | ||
| try { | ||
| Class<?> udfClass = classLoader.loadClass(className); | ||
| if (UserDefinedFunction.class.isAssignableFrom(udfClass)) { | ||
| return true; | ||
| } | ||
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| } catch (ClassNotFoundException e) { | ||
| logger.warn("flink udf load isFlinkUdf failed, ClassNotFoundException: {}", className); | ||
| } | ||
| return false; | ||
| } | ||
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| public static String generateFlinkUdfSql(String name, String className) { | ||
| return String.format(CREATE_TEMP_FUNCTION_SQL, name, className); | ||
| } | ||
| } | ||
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Is it necessary to consider the situation where the value was originally changed to append list?
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Ok, thanks for reviewing the code