| /* |
| * 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.skywalking.oal.tool.output; |
| |
| import freemarker.template.Configuration; |
| import freemarker.template.TemplateException; |
| import freemarker.template.Version; |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.List; |
| import java.util.Locale; |
| import org.apache.skywalking.oal.tool.parser.AnalysisResult; |
| |
| public class FileGenerator { |
| private List<AnalysisResult> results; |
| private String outputPath; |
| private Configuration configuration; |
| private DispatcherContext dispatcherContext; |
| |
| public FileGenerator(List<AnalysisResult> results, String outputPath) { |
| this.results = results; |
| this.outputPath = outputPath; |
| configuration = new Configuration(new Version("2.3.28")); |
| configuration.setEncoding(Locale.ENGLISH, "UTF-8"); |
| configuration.setClassLoaderForTemplateLoading(FileGenerator.class.getClassLoader(), "/code-templates"); |
| this.toDispatchers(); |
| } |
| |
| public void generate() throws IOException, TemplateException { |
| for (AnalysisResult result : results) { |
| generate(result, "AggregateWorker.java", (writer) -> generateAggregateWorker(result, writer)); |
| generate(result, "Indicator.java", (writer) -> generateIndicatorImplementor(result, writer)); |
| generate(result, "PersistentWorker.java", (writer) -> generatePersistentWorker(result, writer)); |
| generate(result, "RemoteWorker.java", (writer) -> generateRemoteWorker(result, writer)); |
| } |
| |
| File file = new File(outputPath, "generated/service/ServiceDispatcher.java"); |
| if (!file.exists()) { |
| if (!file.getParentFile().exists()) { |
| file.getParentFile().mkdirs(); |
| } |
| file.createNewFile(); |
| } |
| this.generateServiceDispatcher(new FileWriter(file)); |
| } |
| |
| |
| |
| private void generate(AnalysisResult result, String fileSuffix, |
| WriteWrapper writeWrapper) throws IOException, TemplateException { |
| File file = new File(outputPath, buildSubFolderName(result, fileSuffix)); |
| if (!file.exists()) { |
| if (!file.getParentFile().exists()) { |
| file.getParentFile().mkdirs(); |
| } |
| file.createNewFile(); |
| } |
| FileWriter fileWriter = new FileWriter(file); |
| try { |
| writeWrapper.execute(fileWriter); |
| } finally { |
| fileWriter.close(); |
| } |
| } |
| |
| private String buildSubFolderName(AnalysisResult result, String suffix) { |
| return "generated/" |
| + result.getSourceName().toLowerCase() + "/" |
| + result.getMetricName().toLowerCase() + "/" |
| + result.getMetricName() + suffix; |
| } |
| |
| void generateAggregateWorker(AnalysisResult result, Writer output) throws IOException, TemplateException { |
| configuration.getTemplate("AggregateWorkerTemplate.ftl").process(result, output); |
| } |
| |
| void generateRemoteWorker(AnalysisResult result, Writer output) throws IOException, TemplateException { |
| configuration.getTemplate("RemoteWorkerTemplate.ftl").process(result, output); |
| } |
| |
| void generatePersistentWorker(AnalysisResult result, Writer output) throws IOException, TemplateException { |
| configuration.getTemplate("PersistentWorkerTemplate.ftl").process(result, output); |
| } |
| |
| void generateIndicatorImplementor(AnalysisResult result, Writer output) throws IOException, TemplateException { |
| configuration.getTemplate("IndicatorImplementor.ftl").process(result, output); |
| } |
| |
| void generateServiceDispatcher(Writer output) throws IOException, TemplateException { |
| configuration.getTemplate("ServiceDispatcherTemplate.ftl").process(dispatcherContext, output); |
| } |
| |
| private void toDispatchers() { |
| dispatcherContext = new DispatcherContext(); |
| for (AnalysisResult result : results) { |
| String sourceName = result.getSourceName(); |
| switch (sourceName) { |
| case "Service": |
| dispatcherContext.getServiceIndicators().add(result); |
| break; |
| case "Endpoint": |
| dispatcherContext.getServiceInstanceIndicators().add(result); |
| break; |
| case "ServiceInstance": |
| dispatcherContext.getEndpointIndicators().add(result); |
| break; |
| default: |
| |
| } |
| } |
| } |
| } |