| /* |
| * 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.maven.plugins.pmd.exec; |
| |
| import java.io.BufferedInputStream; |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.net.URLDecoder; |
| import java.nio.charset.StandardCharsets; |
| import java.util.logging.Handler; |
| import java.util.logging.Level; |
| import java.util.logging.SimpleFormatter; |
| |
| import org.apache.maven.cli.logging.Slf4jConfiguration; |
| import org.apache.maven.cli.logging.Slf4jConfigurationFactory; |
| import org.codehaus.plexus.logging.console.ConsoleLogger; |
| import org.slf4j.ILoggerFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.slf4j.bridge.SLF4JBridgeHandler; |
| |
| abstract class Executor { |
| private static final Logger LOG = LoggerFactory.getLogger(Executor.class); |
| |
| /** |
| * This holds a strong reference in case we configured the logger to |
| * redirect to slf4j. See {@link #showPmdLog}. Without a strong reference, |
| * the logger might be garbage collected and the redirect to slf4j is gone. |
| */ |
| private java.util.logging.Logger julLogger; |
| |
| protected void setupPmdLogging(boolean showPmdLog, String logLevel) { |
| if (!showPmdLog) { |
| return; |
| } |
| |
| java.util.logging.Logger logger = java.util.logging.Logger.getLogger("net.sourceforge.pmd"); |
| |
| boolean slf4jBridgeAlreadyAdded = false; |
| for (Handler handler : logger.getHandlers()) { |
| if (handler instanceof SLF4JBridgeHandler) { |
| slf4jBridgeAlreadyAdded = true; |
| break; |
| } |
| } |
| |
| if (slf4jBridgeAlreadyAdded) { |
| return; |
| } |
| |
| SLF4JBridgeHandler handler = new SLF4JBridgeHandler(); |
| SimpleFormatter formatter = new SimpleFormatter(); |
| handler.setFormatter(formatter); |
| logger.setUseParentHandlers(false); |
| logger.addHandler(handler); |
| handler.setLevel(Level.ALL); |
| logger.setLevel(Level.ALL); |
| julLogger = logger; |
| julLogger.fine("Configured jul-to-slf4j bridge for " + logger.getName()); |
| } |
| |
| protected void setupLogLevel(String logLevel) { |
| ILoggerFactory slf4jLoggerFactory = LoggerFactory.getILoggerFactory(); |
| Slf4jConfiguration slf4jConfiguration = Slf4jConfigurationFactory.getConfiguration(slf4jLoggerFactory); |
| if ("debug".equals(logLevel)) { |
| slf4jConfiguration.setRootLoggerLevel(Slf4jConfiguration.Level.DEBUG); |
| } else if ("info".equals(logLevel)) { |
| slf4jConfiguration.setRootLoggerLevel(Slf4jConfiguration.Level.INFO); |
| } else { |
| slf4jConfiguration.setRootLoggerLevel(Slf4jConfiguration.Level.ERROR); |
| } |
| slf4jConfiguration.activate(); |
| } |
| |
| protected static String buildClasspath() { |
| StringBuilder classpath = new StringBuilder(); |
| |
| // plugin classpath needs to come first |
| ClassLoader pluginClassloader = Executor.class.getClassLoader(); |
| buildClasspath(classpath, pluginClassloader); |
| |
| ClassLoader coreClassloader = ConsoleLogger.class.getClassLoader(); |
| buildClasspath(classpath, coreClassloader); |
| |
| return classpath.toString(); |
| } |
| |
| static void buildClasspath(StringBuilder classpath, ClassLoader cl) { |
| if (cl instanceof URLClassLoader) { |
| for (URL url : ((URLClassLoader) cl).getURLs()) { |
| if ("file".equalsIgnoreCase(url.getProtocol())) { |
| try { |
| String filename = URLDecoder.decode(url.getPath(), StandardCharsets.UTF_8.name()); |
| classpath.append(new File(filename).getPath()).append(File.pathSeparatorChar); |
| } catch (UnsupportedEncodingException e) { |
| LOG.warn("Ignoring " + url + " in classpath due to UnsupportedEncodingException", e); |
| } |
| } |
| } |
| } |
| } |
| |
| protected static class ProcessStreamHandler implements Runnable { |
| private static final int BUFFER_SIZE = 8192; |
| |
| private final BufferedInputStream in; |
| private final BufferedOutputStream out; |
| |
| public static void start(InputStream in, OutputStream out) { |
| Thread t = new Thread(new ProcessStreamHandler(in, out)); |
| t.start(); |
| } |
| |
| private ProcessStreamHandler(InputStream in, OutputStream out) { |
| this.in = new BufferedInputStream(in); |
| this.out = new BufferedOutputStream(out); |
| } |
| |
| @Override |
| public void run() { |
| byte[] buffer = new byte[BUFFER_SIZE]; |
| try { |
| int count = in.read(buffer); |
| while (count != -1) { |
| out.write(buffer, 0, count); |
| out.flush(); |
| count = in.read(buffer); |
| } |
| out.flush(); |
| } catch (IOException e) { |
| LOG.error(e.getMessage(), e); |
| } |
| } |
| } |
| } |