[WIP] ZEPPELIN-1571. Support pig udf interpreter #1545
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| /* | ||
| * 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.zeppelin.pig; | ||
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| import com.thoughtworks.qdox.JavaProjectBuilder; | ||
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There was a problem hiding this comment. whats the license of this qdox library? There was a problem hiding this comment. It is apache licence 2. https://mvnrepository.com/artifact/com.thoughtworks.qdox/qdox There was a problem hiding this comment. we need to add that to LICENSE file? |
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| import com.thoughtworks.qdox.model.JavaClass; | ||
| import com.thoughtworks.qdox.model.JavaSource; | ||
| import org.apache.commons.io.FileUtils; | ||
| import org.apache.commons.io.filefilter.FileFileFilter; | ||
| import org.apache.commons.lang3.StringUtils; | ||
| import org.apache.pig.PigServer; | ||
| import org.apache.zeppelin.interpreter.*; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import javax.tools.*; | ||
| import java.io.*; | ||
| import java.net.URI; | ||
| import java.util.*; | ||
| import java.util.jar.JarEntry; | ||
| import java.util.jar.JarOutputStream; | ||
| import java.util.jar.Manifest; | ||
| import java.util.zip.ZipEntry; | ||
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| /** | ||
| * Interpreter for Pig UDF | ||
| */ | ||
| public class PigUDFInterpreter extends Interpreter { | ||
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| private static final Logger LOGGER = LoggerFactory.getLogger(PigUDFInterpreter.class); | ||
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| private PigServer pigServer; | ||
| private String udfBuildClasspath; | ||
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| public PigUDFInterpreter(Properties property) { | ||
| super(property); | ||
| } | ||
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| @Override | ||
| public void open() { | ||
| pigServer = getPigInterpreter().getPigServer(); | ||
| // register dependency jars | ||
| String localRepo = getProperty("zeppelin.interpreter.localRepo"); | ||
| if (localRepo != null && new File(localRepo).exists()) { | ||
| File[] jars = new File(localRepo).listFiles(new FileFilter() { | ||
| @Override | ||
| public boolean accept(File pathname) { | ||
| return pathname.isFile() && pathname.getName().endsWith(".jar"); | ||
| } | ||
| }); | ||
| StringBuilder classPathBuilder = new StringBuilder(System.getProperty("java.class.path")); | ||
| for (File jar : jars) { | ||
| try { | ||
| pigServer.registerJar(jar.getAbsolutePath()); | ||
| classPathBuilder.append(":" + jar.getAbsolutePath()); | ||
| LOGGER.debug("Register dependency jar:" + jar.getAbsolutePath()); | ||
| } catch (IOException e) { | ||
| LOGGER.error("Fail to register dependency jar", e); | ||
| } | ||
| } | ||
| this.udfBuildClasspath = classPathBuilder.toString(); | ||
| LOGGER.debug("udfBuildClass:" + udfBuildClasspath); | ||
| } else { | ||
| LOGGER.error("localRepo is missing or doesn't exist, " + | ||
| "zeppelin.interpreter.localRepo=" + localRepo); | ||
| } | ||
| } | ||
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| @Override | ||
| public void close() { | ||
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| } | ||
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| @Override | ||
| public InterpreterResult interpret(String st, InterpreterContext context) { | ||
| try { | ||
| CompiledClass compiledClass = compile(st); | ||
| File jarFile = buildJar(compiledClass); | ||
| pigServer.registerJar(jarFile.getAbsolutePath()); | ||
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| return new InterpreterResult(InterpreterResult.Code.SUCCESS, "Build successfully"); | ||
| } catch (Exception e) { | ||
| LOGGER.error("Fail to compile/build udf", e); | ||
| return new InterpreterResult(InterpreterResult.Code.ERROR, | ||
| InterpreterUtils.getMostRelevantMessage(e)); | ||
| } | ||
| } | ||
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| @Override | ||
| public void cancel(InterpreterContext context) { | ||
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| } | ||
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| @Override | ||
| public FormType getFormType() { | ||
| return FormType.SIMPLE; | ||
| } | ||
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| @Override | ||
| public int getProgress(InterpreterContext context) { | ||
| return 0; | ||
| } | ||
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| private PigInterpreter getPigInterpreter() { | ||
| LazyOpenInterpreter lazy = null; | ||
| PigInterpreter pig = null; | ||
| Interpreter p = getInterpreterInTheSameSessionByClassName(PigInterpreter.class.getName()); | ||
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| while (p instanceof WrappedInterpreter) { | ||
| if (p instanceof LazyOpenInterpreter) { | ||
| lazy = (LazyOpenInterpreter) p; | ||
| } | ||
| p = ((WrappedInterpreter) p).getInnerInterpreter(); | ||
| } | ||
| pig = (PigInterpreter) p; | ||
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| if (lazy != null) { | ||
| lazy.open(); | ||
| } | ||
| return pig; | ||
| } | ||
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| private CompiledClass compile(String code) throws Exception { | ||
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| JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); | ||
| DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>(); | ||
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| // Java parsing | ||
| JavaProjectBuilder builder = new JavaProjectBuilder(); | ||
| JavaSource src = builder.addSource(new StringReader(code)); | ||
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| // get all classes in code (paragraph) | ||
| List<JavaClass> classes = src.getClasses(); | ||
| if (classes.size() != 1) { | ||
| throw new Exception("Either you doesn't define class or define multiple classes " + | ||
| "in on paragraph."); | ||
| } | ||
| String className = classes.get(0).getName(); | ||
| String packageName = classes.get(0).getPackageName(); | ||
| JavaFileObject file = new JavaSourceFromString(className, code.toString()); | ||
| Iterable<? extends JavaFileObject> compilationUnits = Arrays.asList(file); | ||
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| ByteArrayOutputStream baosOut = new ByteArrayOutputStream(); | ||
| ByteArrayOutputStream baosErr = new ByteArrayOutputStream(); | ||
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| // Creating new stream to get the output data | ||
| PrintStream newOut = new PrintStream(baosOut); | ||
| PrintStream newErr = new PrintStream(baosErr); | ||
| // Save the old System.out! | ||
| PrintStream oldOut = System.out; | ||
| PrintStream oldErr = System.err; | ||
| // Tell Java to use your special stream | ||
| System.setOut(newOut); | ||
| System.setErr(newErr); | ||
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| List<String> options = new ArrayList<>(); | ||
| options.addAll(Arrays.asList("-classpath", udfBuildClasspath)); | ||
| JavaCompiler.CompilationTask task = compiler.getTask(null, null, diagnostics, options, null, | ||
| compilationUnits); | ||
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| // executing the compilation process | ||
| boolean success = task.call(); | ||
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| // if success is false will get error | ||
| if (!success) { | ||
| for (Diagnostic diagnostic : diagnostics.getDiagnostics()) { | ||
| if (diagnostic.getLineNumber() == -1) { | ||
| continue; | ||
| } | ||
| System.err.println("line " + diagnostic.getLineNumber() + " : " | ||
| + diagnostic.getMessage(null)); | ||
| } | ||
| System.out.flush(); | ||
| System.err.flush(); | ||
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| System.setOut(oldOut); | ||
| System.setErr(oldErr); | ||
| logger.error("Exception in Interpreter while compilation", baosErr.toString()); | ||
| throw new Exception(baosErr.toString()); | ||
| } else { | ||
| System.out.flush(); | ||
| System.err.flush(); | ||
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| // set the stream to old stream | ||
| System.setOut(oldOut); | ||
| System.setErr(oldErr); | ||
| return new CompiledClass(packageName, new File(className + ".class")); | ||
| } | ||
| } | ||
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| private File buildJar(CompiledClass clazz) throws IOException { | ||
| File tmpJarFile = File.createTempFile("zeppelin_pig", ".jar"); | ||
| FileOutputStream fOut = null; | ||
| JarOutputStream jarOut = null; | ||
| try { | ||
| fOut = new FileOutputStream(tmpJarFile); | ||
| jarOut = new JarOutputStream(fOut); | ||
| String entryPath = null; | ||
| if (clazz.packageName.isEmpty()) { | ||
| entryPath = clazz.classFile.getName(); | ||
| } else { | ||
| entryPath = clazz.packageName.replace(".", "/") + "/" + clazz.classFile.getName(); | ||
| } | ||
| jarOut.putNextEntry(new JarEntry(entryPath)); | ||
| jarOut.write(FileUtils.readFileToByteArray(clazz.classFile)); | ||
| jarOut.closeEntry(); | ||
| LOGGER.debug("pig udf jar is created under " + tmpJarFile.getAbsolutePath()); | ||
| return tmpJarFile; | ||
| } catch (IOException e) { | ||
| throw e; | ||
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| } finally { | ||
| if (jarOut != null) { | ||
| jarOut.close(); | ||
| } | ||
| if (fOut != null) { | ||
| fOut.close(); | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * | ||
| */ | ||
| public static class JavaSourceFromString extends SimpleJavaFileObject { | ||
| final String code; | ||
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| JavaSourceFromString(String name, String code) { | ||
| super(URI.create("string:///" + name.replace('.', '/') + Kind.SOURCE.extension), Kind.SOURCE); | ||
| this.code = code; | ||
| } | ||
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| @Override | ||
| public CharSequence getCharContent(boolean ignoreEncodingErrors) { | ||
| return code; | ||
| } | ||
| } | ||
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| /** | ||
| * | ||
| */ | ||
| public static class CompiledClass { | ||
| public final String packageName; | ||
| public final File classFile; | ||
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| public CompiledClass(String packageName, File classFile) { | ||
| this.packageName = packageName; | ||
| this.classFile = classFile; | ||
| } | ||
| } | ||
| } | ||
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This is for test in PigUDFInterpreterTest