| /* |
| * 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.drill.exec.compile; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| import javax.tools.DiagnosticListener; |
| import javax.tools.JavaCompiler; |
| import javax.tools.JavaCompiler.CompilationTask; |
| import javax.tools.JavaFileManager; |
| import javax.tools.JavaFileObject; |
| import javax.tools.ToolProvider; |
| |
| import org.apache.drill.exec.compile.ClassTransformer.ClassNames; |
| import org.codehaus.commons.compiler.CompileException; |
| |
| import org.apache.drill.shaded.guava.com.google.common.base.Charsets; |
| import org.apache.drill.shaded.guava.com.google.common.collect.Lists; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| class JDKClassCompiler extends AbstractClassCompiler { |
| private static final Logger logger = LoggerFactory.getLogger(JDKClassCompiler.class); |
| |
| private final Collection<String> compilerOptions; |
| private final DiagnosticListener<JavaFileObject> listener; |
| private final JavaCompiler compiler; |
| private final ClassLoader classLoader; |
| |
| private JDKClassCompiler(JavaCompiler compiler, ClassLoader classLoader, boolean debug) { |
| super(debug); |
| this.compiler = compiler; |
| this.listener = new DrillDiagnosticListener(); |
| this.classLoader = classLoader; |
| this.compilerOptions = Lists.newArrayList(this.debug ? "-g:source,lines,vars" : "-g:none"); |
| } |
| |
| public static JDKClassCompiler newInstance(ClassLoader classLoader, boolean debug) { |
| JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); |
| if (compiler == null) { |
| throw new RuntimeException("JDK Java compiler not available - probably you're running Drill with a JRE and not a JDK"); |
| } |
| return new JDKClassCompiler(compiler, classLoader, debug); |
| } |
| |
| @Override |
| protected byte[][] getByteCode(final ClassNames className, final String sourceCode) |
| throws CompileException, IOException, ClassNotFoundException { |
| return doCompile(className, sourceCode).getByteCode(); |
| } |
| |
| @Override |
| public Map<String, byte[]> compile(final ClassNames className, final String sourceCode) |
| throws CompileException, IOException, ClassNotFoundException { |
| return doCompile(className, sourceCode).getClassByteCodes(); |
| } |
| |
| private DrillJavaFileObject doCompile(final ClassNames className, final String sourceCode) |
| throws CompileException, IOException, ClassNotFoundException { |
| // JavaFileManager should be closed after its usage to release all resources opened by this file manager |
| try (JavaFileManager fileManager = new DrillJavaFileManager(compiler.getStandardFileManager(listener, null, Charsets.UTF_8), classLoader)) { |
| // Create one Java source file in memory, which will be compiled later. |
| DrillJavaFileObject compilationUnit = new DrillJavaFileObject(className.dot, sourceCode); |
| |
| CompilationTask task = compiler.getTask(null, fileManager, listener, compilerOptions, null, Collections.singleton(compilationUnit)); |
| |
| // Run the compiler. |
| if (!task.call()) { |
| throw new CompileException("Compilation failed", null); |
| } else if (!compilationUnit.isCompiled()) { |
| throw new ClassNotFoundException(className + ": Class file not created by compilation."); |
| } |
| // all good |
| return compilationUnit; |
| } catch (RuntimeException rte) { |
| // Unwrap the compilation exception and throw it. |
| Throwable cause = rte.getCause(); |
| if (cause != null) { |
| cause = cause.getCause(); |
| if (cause instanceof CompileException) { |
| throw (CompileException) cause; |
| } |
| if (cause instanceof IOException) { |
| throw (IOException) cause; |
| } |
| } |
| throw rte; |
| } |
| } |
| |
| @Override |
| protected Logger getLogger() { |
| return logger; |
| } |
| } |