| /** |
| * 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.hadoop.contrib.failmon; |
| |
| import java.net.InetAddress; |
| import java.util.Calendar; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /********************************************************** |
| * Objects of this class parse the output of the lm-sensors utility |
| * to gather information about fan speed, temperatures for cpus |
| * and motherboard etc. |
| * |
| **********************************************************/ |
| |
| public class SensorsParser extends ShellParser { |
| |
| /** |
| * Reads and parses the output of the 'sensors' command |
| * and creates an appropriate EventRecord that holds |
| * the desirable information. |
| * |
| * @param s unused parameter |
| * |
| * @return the EventRecord created |
| */ |
| public EventRecord query(String s) throws Exception { |
| StringBuffer sb; |
| |
| //sb = Environment.runCommand("sensors -A"); |
| sb = Environment.runCommand("cat sensors.out"); |
| |
| EventRecord retval = new EventRecord(InetAddress.getLocalHost() |
| .getCanonicalHostName(), InetAddress.getAllByName(InetAddress.getLocalHost() |
| .getHostName()), Calendar.getInstance(), "lm-sensors", "Unknown", |
| "sensors -A", "-"); |
| readGroup(retval, sb, "fan"); |
| readGroup(retval, sb, "in"); |
| readGroup(retval, sb, "temp"); |
| readGroup(retval, sb, "Core"); |
| |
| return retval; |
| } |
| |
| /** |
| * Reads and parses lines that provide the output |
| * of a group of sensors with the same functionality. |
| * |
| * @param er the EventRecord to which the new attributes are added |
| * @param sb the text to parse |
| * @param prefix a String prefix specifying the common prefix of the |
| * sensors' names in the group (e.g. "fan", "in", "temp" |
| * |
| * @return the EventRecord created |
| */ |
| private EventRecord readGroup(EventRecord er, StringBuffer sb, String prefix) { |
| |
| Pattern pattern = Pattern.compile(".*(" + prefix |
| + "\\s*\\d*)\\s*:\\s*(\\+?\\d+)", Pattern.MULTILINE); |
| Matcher matcher = pattern.matcher(sb); |
| |
| while (matcher.find()) |
| er.set(matcher.group(1), matcher.group(2)); |
| |
| return er; |
| } |
| |
| /** |
| * Invokes query() to do the parsing and handles parsing errors. |
| * |
| * @return an array of EventRecords that holds one element that represents |
| * the current state of the hardware sensors |
| */ |
| public EventRecord[] monitor() { |
| EventRecord[] recs = new EventRecord[1]; |
| |
| try { |
| recs[0] = query(null); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| |
| return recs; |
| } |
| |
| /** |
| * Return a String with information about this class |
| * |
| * @return A String describing this class |
| */ |
| public String getInfo() { |
| return ("lm-sensors parser"); |
| } |
| |
| } |