| // |
| // 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 com.cloud.utils.script; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.LogManager; |
| |
| /** |
| */ |
| public abstract class OutputInterpreter { |
| |
| protected Logger logger = LogManager.getLogger(getClass()); |
| public boolean drain() { |
| return false; |
| } |
| |
| public String processError(BufferedReader reader) throws IOException { |
| StringBuilder buff = new StringBuilder(); |
| String line = null; |
| while ((line = reader.readLine()) != null) { |
| buff.append(line); |
| } |
| return buff.toString(); |
| } |
| |
| public abstract String interpret(BufferedReader reader) throws IOException; |
| |
| public static final OutputInterpreter NoOutputParser = new OutputInterpreter() { |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| return null; |
| } |
| }; |
| |
| public static class TimedOutLogger extends OutputInterpreter { |
| Process _process; |
| |
| public TimedOutLogger(Process process) { |
| _process = process; |
| } |
| |
| @Override |
| public boolean drain() { |
| return true; |
| } |
| |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| StringBuilder buff = new StringBuilder(); |
| |
| while (reader.ready()) { |
| buff.append(reader.readLine()); |
| } |
| |
| _process.destroy(); |
| |
| try { |
| while (reader.ready()) { |
| buff.append(reader.readLine()); |
| } |
| } catch (IOException e) { |
| logger.info("[ignored] can not append line to buffer",e); |
| } |
| |
| return buff.toString(); |
| } |
| } |
| |
| public static class OutputLogger extends OutputInterpreter { |
| Logger _logger; |
| |
| public OutputLogger(Logger logger) { |
| _logger = logger; |
| } |
| |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| StringBuilder builder = new StringBuilder(); |
| String line = null; |
| while ((line = reader.readLine()) != null) { |
| builder.append(line).append("\n"); |
| } |
| if (builder.length() > 0) { |
| _logger.debug(builder.toString()); |
| } |
| return null; |
| } |
| } |
| |
| public static class OneLineParser extends OutputInterpreter { |
| String line = null; |
| |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| line = reader.readLine(); |
| return null; |
| } |
| |
| public String getLine() { |
| return line; |
| } |
| }; |
| |
| public static class AllLinesParser extends OutputInterpreter { |
| String allLines = null; |
| |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| StringBuilder builder = new StringBuilder(); |
| String line = null; |
| while ((line = reader.readLine()) != null) { |
| builder.append(line).append("\n"); |
| } |
| allLines = builder.toString(); |
| return null; |
| } |
| |
| public String getLines() { |
| return allLines; |
| } |
| |
| @Override |
| public boolean drain() { |
| return true; |
| } |
| } |
| |
| public static class LineByLineOutputLogger extends OutputInterpreter { |
| private Logger logger; |
| private String logPrefix; |
| |
| public LineByLineOutputLogger(Logger logger) { |
| this.logger = logger; |
| } |
| |
| public LineByLineOutputLogger(Logger logger, String logPrefix) { |
| this.logger = logger; |
| this.logPrefix = logPrefix; |
| } |
| |
| @Override |
| public boolean drain() { |
| return true; |
| } |
| |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| String line; |
| while ((line = reader.readLine()) != null) { |
| logger.info(StringUtils.isNotBlank(logPrefix) ? String.format("(%s) %s", logPrefix, line) : line); |
| } |
| return null; |
| } |
| } |
| } |