ppalaga commented on a change in pull request #2048: URL: https://github.com/apache/camel-quarkus/pull/2048#discussion_r535291704
########## File path: extensions-core/core/deployment/src/main/java/org/apache/camel/quarkus/core/deployment/CSimpleLanguageProcessor.java ########## @@ -0,0 +1,455 @@ +/* + * 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.camel.quarkus.core.deployment; + +import java.io.BufferedReader; +import java.io.File; +import java.io.IOException; +import java.io.InputStreamReader; +import java.net.URISyntaxException; +import java.net.URL; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.AbstractMap.SimpleImmutableEntry; +import java.util.ArrayDeque; +import java.util.Collections; +import java.util.Deque; +import java.util.Enumeration; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedHashMap; +import java.util.LinkedHashSet; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.Set; +import java.util.TreeSet; +import java.util.function.Function; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import javax.xml.bind.JAXBContext; +import javax.xml.bind.JAXBException; +import javax.xml.bind.Marshaller; +import javax.xml.bind.Marshaller.Listener; + +import org.xml.sax.Attributes; +import org.xml.sax.ContentHandler; +import org.xml.sax.Locator; +import org.xml.sax.SAXException; + +import io.quarkus.bootstrap.classloading.ClassPathElement; +import io.quarkus.bootstrap.classloading.QuarkusClassLoader; +import io.quarkus.deployment.annotations.BuildProducer; +import io.quarkus.deployment.annotations.BuildStep; +import io.quarkus.deployment.annotations.ExecutionTime; +import io.quarkus.deployment.annotations.Record; +import io.quarkus.deployment.builditem.GeneratedClassBuildItem; +import io.quarkus.deployment.dev.CompilationProvider; +import io.quarkus.deployment.dev.CompilationProvider.Context; +import io.quarkus.deployment.dev.JavaCompilationProvider; +import io.quarkus.runtime.RuntimeValue; +import org.apache.camel.Exchange; +import org.apache.camel.NamedNode; +import org.apache.camel.builder.RouteBuilder; +import org.apache.camel.language.csimple.CSimpleCodeGenerator; +import org.apache.camel.language.csimple.CSimpleGeneratedCode; +import org.apache.camel.language.csimple.CSimpleHelper; +import org.apache.camel.language.csimple.CSimpleLanguage; +import org.apache.camel.model.Constants; +import org.apache.camel.model.ExpressionNode; +import org.apache.camel.quarkus.core.CSimpleLanguageRecorder; +import org.apache.camel.quarkus.core.deployment.spi.CSimpleExpressionSourceBuildItem; +import org.apache.camel.quarkus.core.deployment.spi.CamelBeanBuildItem; +import org.apache.camel.quarkus.core.deployment.spi.CamelContextBuildItem; +import org.apache.camel.quarkus.core.deployment.spi.CamelRoutesBuilderClassBuildItem; +import org.apache.camel.quarkus.core.deployment.spi.CompiledCSimpleExpressionBuildItem; +import org.apache.camel.util.PropertiesHelper; + +class CSimpleLanguageProcessor { + static final String CLASS_EXT = ".class"; + + @BuildStep + void collectCSimpleExpresions( + List<CamelRoutesBuilderClassBuildItem> routesBuilderClasses, + BuildProducer<CSimpleExpressionSourceBuildItem> csimpleExpressions) + throws IOException, ClassNotFoundException, URISyntaxException, JAXBException { + + if (!routesBuilderClasses.isEmpty()) { + final ClassLoader loader = Thread.currentThread().getContextClassLoader(); + if (!(loader instanceof QuarkusClassLoader)) { + throw new IllegalStateException( + QuarkusClassLoader.class.getSimpleName() + " expected as the context class loader"); + } + + final ExpressionCollector collector = new ExpressionCollector(loader); + + for (CamelRoutesBuilderClassBuildItem routesBuilderClass : routesBuilderClasses) { + final String className = routesBuilderClass.getDotName().toString(); + final Class<?> cl = loader.loadClass(className); + + if (RouteBuilder.class.isAssignableFrom(cl)) { + try { + final RouteBuilder rb = (RouteBuilder) cl.newInstance(); + rb.configure(); Review comment: Yeah, thanks for the feedback. I thought something like this could be the case. I think we can set a dummy context to support a couple of more cases. For the rest, I'd say, at this experimental stage, we simply won't compile their expressions and either make them fail at runtime (recommending to use simple language instead) or have some runtime "interpreted" fallback. In the long term we'd probably need to redesign the existing route builder or add a new kind of route builder such that it would allow introspecting the route defs without requiring any runtime info. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
