| /* |
| * 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.dubbo.maven.plugin; |
| |
| import org.apache.dubbo.common.extension.Adaptive; |
| import org.apache.dubbo.common.extension.AdaptiveClassCodeGenerator; |
| import org.apache.dubbo.common.extension.SPI; |
| import org.apache.dubbo.common.utils.StringUtils; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.apache.maven.plugin.logging.Log; |
| import org.apache.maven.plugin.logging.SystemStreamLog; |
| |
| import java.io.File; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Method; |
| import java.net.URL; |
| import java.nio.charset.Charset; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.regex.Matcher; |
| import java.util.stream.Collectors; |
| |
| /** |
| * generate related self-adaptive code (native image does not support dynamic code generation. Therefore, code needs to be generated before compilation) |
| */ |
| public class CodeGenerator { |
| |
| |
| public static void execute(String p, Log log) { |
| log.info("Start generating code:" + p); |
| List<Class<?>> classes = new ClassFinder().findClassSet("org.apache.dubbo", msg -> { |
| log.info(msg); |
| }).stream().map(it -> { |
| try { |
| return Class.forName(it); |
| } catch (Throwable e) { |
| } |
| return null; |
| }).collect(Collectors.toList()); |
| new ArrayList<>(classes).stream().filter(it -> { |
| if (null == it) { |
| return false; |
| } |
| Annotation anno = it.getAnnotation(SPI.class); |
| if (null == anno) { |
| return false; |
| } |
| try { |
| Optional<Method> optional = Arrays.stream(it.getMethods()).filter(it2 -> it2.getAnnotation(Adaptive.class) != null).findAny(); |
| return optional.isPresent(); |
| } catch (Throwable ex) { |
| log.warn(ex.getMessage()); |
| return false; |
| } |
| }).forEach(it -> { |
| try { |
| SPI spi = it.getAnnotation(SPI.class); |
| String value = spi.value(); |
| if (StringUtils.isEmpty(value)) { |
| value = "adaptive"; |
| } |
| AdaptiveClassCodeGenerator codeGenerator = new AdaptiveClassCodeGenerator(it, value); |
| String code = codeGenerator.generate(); |
| String file = p + File.separator + it.getName().replaceAll("\\.", Matcher.quoteReplacement(File.separator)); |
| String dir = Paths.get(file).getParent().toString(); |
| FileUtils.forceMkdir(new File(dir)); |
| code = licensedStr + code + "\n"; |
| File tmpFile = new File(file + "$Adaptive.java"); |
| FileUtils.write(tmpFile, code, Charset.defaultCharset()); |
| log.info("Generate file:" + tmpFile); |
| } catch (Throwable e) { |
| log.error("error:" + it.getPackage()); |
| } |
| }); |
| log.info("End of code generation"); |
| } |
| |
| |
| public static void main(String[] args) { |
| URL r = Thread.currentThread().getContextClassLoader().getResource(""); |
| String targetClassPath = new File(r.getFile()).getAbsolutePath(); |
| String p = Paths.get(targetClassPath).getParent().getParent().toString() + File.separator + "src" + File.separator + "main" + File.separator + "java"; |
| execute(p, new SystemStreamLog()); |
| } |
| |
| |
| private static String licensedStr = "/*\n" + |
| " * Licensed to the Apache Software Foundation (ASF) under one or more\n" + |
| " * contributor license agreements. See the NOTICE file distributed with\n" + |
| " * this work for additional information regarding copyright ownership.\n" + |
| " * The ASF licenses this file to You under the Apache License, Version 2.0\n" + |
| " * (the \"License\"); you may not use this file except in compliance with\n" + |
| " * the License. You may obtain a copy of the License at\n" + |
| " *\n" + |
| " * http://www.apache.org/licenses/LICENSE-2.0\n" + |
| " *\n" + |
| " * Unless required by applicable law or agreed to in writing, software\n" + |
| " * distributed under the License is distributed on an \"AS IS\" BASIS,\n" + |
| " * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n" + |
| " * See the License for the specific language governing permissions and\n" + |
| " * limitations under the License.\n" + |
| " */\n"; |
| |
| } |