/*
* 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.zeppelin.beam;
import java.io.File;
import java.util.Collections;
import java.util.List;
import java.util.Properties;
import java.util.UUID;
import org.apache.zeppelin.interpreter.Interpreter;
import org.apache.zeppelin.interpreter.InterpreterContext;
import org.apache.zeppelin.interpreter.InterpreterResult;
import org.apache.zeppelin.interpreter.thrift.InterpreterCompletion;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Beam interpreter
*
*/
public class BeamInterpreter extends Interpreter {
Logger logger = LoggerFactory.getLogger(BeamInterpreter.class);
public BeamInterpreter(Properties property) {
super(property);
}
@Override
public void open() {
}
@Override
public void close() {
File dir = new File(".");
// delete all .class files created while compilation process
for (int i = 0; i < dir.list().length; i++) {
File f = dir.listFiles()[i];
if (f.getAbsolutePath().endsWith(".class")) {
f.delete();
}
}
}
@Override
public InterpreterResult interpret(String code, InterpreterContext context) {
// choosing new name to class containing Main method
String generatedClassName = "C" + UUID.randomUUID().toString().replace("-", "");
try {
String res = StaticRepl.execute(generatedClassName, code);
return new InterpreterResult(InterpreterResult.Code.SUCCESS, res);
} catch (Exception e) {
logger.error("Exception in Interpreter while interpret", e);
return new InterpreterResult(InterpreterResult.Code.ERROR, e.getMessage());
}
}
@Override
public void cancel(InterpreterContext context) {
}
@Override
public FormType getFormType() {
return FormType.SIMPLE;
}
@Override
public int getProgress(InterpreterContext context) {
return 0;
}
@Override
public List<InterpreterCompletion> completion(String buf, int cursor,
InterpreterContext interpreterContext) {
return Collections.emptyList();
}
}