Java tutorial
package com.logicmonitor.ft.jmxstat; import com.logicmonitor.ft.jmx.jmxman.*; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import org.apache.commons.cli.*; import org.fusesource.jansi.AnsiConsole; import java.util.ArrayList; import java.util.List; import static java.lang.System.exit; /** * Created by vincent on 14-10-16. */ public class JMXStatMain { public static void main(String[] args) { RunParameter runParameter = ARGSAnalyser(args); if (!runParameter.isValid()) { System.out.println(runParameter.getValidInfo()); System.out.println("<Please check your arguments>"); exit(-1); } try { JMXMan jmxman = new JMXMan(runParameter.getSurl(), runParameter.getUsername(), runParameter.getPassword(), runParameter.getTimeout()); jmxman.init(runParameter); statJMXValues(jmxman, runParameter); } catch (Exception e) { System.out.println("Fail to connect to process, check the surl,username and password"); e.printStackTrace(); } } private static void statJMXValues(JMXMan jmxMan, RunParameter runParameter) { AnsiConsole.systemInstall(); if (!jmxMan.hasFullPath()) { System.err.print("Can not discover any full path for inputted paths, please check the path format!"); exit(-1); } List<String> lastValues; List<String> values; lastValues = jmxMan.getValues(); List<JMXFullPath> jmxFullPaths = jmxMan.getJmxFullPaths(); int columnLen[] = new int[jmxFullPaths.size()]; _showCompanyInfo(); if (runParameter.isShowAliasTitle()) { for (int i = 0; i < jmxFullPaths.size(); i++) { int tmp = jmxFullPaths.get(i).getDomain().length() > jmxFullPaths.get(i).getPropertyList().length() ? jmxFullPaths.get(i).getDomain().length() : jmxFullPaths.get(i).getPropertyList().length(); int tmp2 = jmxFullPaths.get(i).getSelectorStr().length() > jmxFullPaths.get(i).getAlias().length() ? jmxFullPaths.get(i).getSelectorStr().length() : jmxFullPaths.get(i).getAlias().length(); columnLen[i] = tmp > tmp2 ? tmp : tmp2; } _showTitles(jmxFullPaths, columnLen); } else { for (int i = 0; i < jmxFullPaths.size(); i++) { columnLen[i] = jmxFullPaths.get(i).getPath().length(); } _showPathTitles(jmxFullPaths); } int times = runParameter.getTimes(); int interval = runParameter.getInterval(); if (times > 0) { while (times > 0) { values = jmxMan.getValues(); _showValues(jmxFullPaths, values, lastValues, columnLen); times--; lastValues = values; try { Thread.sleep(interval * 1000); } catch (InterruptedException e) { e.printStackTrace(); } } } else { while (true) { values = jmxMan.getValues(); _showValues(jmxFullPaths, values, lastValues, columnLen); lastValues = values; try { Thread.sleep(interval * 1000); } catch (InterruptedException e) { e.printStackTrace(); } } } AnsiConsole.systemUninstall(); } private static void _showCompanyInfo() { System.out.println(""); System.out.println(" JMXStat was created by LogicMonitor under the BSD3 License."); System.out.println(""); System.out.println( " To learn more about LogicMonitor and its automated IT Infrastructure Performance Monitoring Platform, visit www.logicmonitor.com."); System.out.println( " For the latest updates, versions and configuration files, please visit our page on GitHub at https://github.com/logicmonitor/jmx-clt.git."); System.out.println(""); } private static void _showPathTitles(List<JMXFullPath> jmxFullPaths) { for (int i = 0; i < jmxFullPaths.size(); i++) { System.out.printf(String.format(" %s ", jmxFullPaths.get(i).getPath())); } System.out.printf("\n"); } private static void _showTitles(List<JMXFullPath> jmxFullPaths, int columnLen[]) { for (int i = 0; i < jmxFullPaths.size(); i++) { System.out.printf(String.format(" %s ", fixLengthStr(jmxFullPaths.get(i).getDomain(), columnLen[i]))); } System.out.println(); for (int i = 0; i < jmxFullPaths.size(); i++) { System.out.printf( String.format(" %s ", fixLengthStr(jmxFullPaths.get(i).getPropertyList(), columnLen[i]))); } System.out.println(); for (int i = 0; i < jmxFullPaths.size(); i++) { System.out.printf( String.format(" %s ", fixLengthStr(jmxFullPaths.get(i).getSelectorStr(), columnLen[i]))); } System.out.println(); for (int i = 0; i < jmxFullPaths.size(); i++) { System.out.printf(String.format(" %s ", fixLengthStr(jmxFullPaths.get(i).getAlias(), columnLen[i]))); } System.out.println(); } private static void _showValues(List<JMXFullPath> jmxFullPaths, List<String> values, List<String> lastValues, int columnLen[]) { String combined_all = ""; for (int i = 0; i < jmxFullPaths.size(); i++) { String value; if (jmxFullPaths.get(i).isCounter()) { long rs = Long.valueOf(values.get(i)) - Long.valueOf(lastValues.get(i)); value = String.valueOf(rs); } else { value = values.get(i); } if (jmxFullPaths.get(i).getOperator() != null && jmxFullPaths.get(i).getScale() != 0) { String opt = jmxFullPaths.get(i).getOperator(); int scale = jmxFullPaths.get(i).getScale(); long v = Long.valueOf(value); if (opt.equals("+")) { v += scale; } else if (opt.equals("-")) { v -= scale; } else if (opt.equals("*")) { v *= scale; } else if (opt.equals("/")) { v /= scale; } else { } value = String.valueOf(v); } if (jmxFullPaths.get(i).getUnit() != null) value = value + jmxFullPaths.get(i).getUnit(); combined_all = combined_all + " " + fixLengthStr(value, columnLen[i]) + " "; } System.out.printf("%s\n", combined_all); } private static String fixLengthStr(String inStr, int length) { //TODO: The source String is longer than dest-length, just return the origin String currently if (inStr.length() >= length) return inStr; int spc = length - inStr.length(); int left_spaces_count = spc / 2; int right_spaces_count = spc - left_spaces_count; String left_spaces = ""; for (int i = 0; i < left_spaces_count; i++) left_spaces += " "; String right_spaces = ""; for (int i = 0; i < right_spaces_count; i++) right_spaces += " "; return left_spaces + inStr + right_spaces; } /** * @param args : arguments array * @return Run Parameter */ private static RunParameter ARGSAnalyser(String[] args) { Options options = new Options(); options.addOption(new Option("h", "help", false, "show this help message")) .addOption(new Option("u", true, "User name for remote process")) .addOption(new Option("p", true, "Password for remote process")) .addOption(new Option("f", true, "Path to the configure file")) .addOption(new Option("t", true, "Exit after scanning jmx-paths n times")) .addOption(new Option("i", true, "Interval between two scan tasks, unit is second")) .addOption(new Option("a", false, "Show alias names instead of jmx paths")); CommandLineParser parser = new BasicParser(); RunParameter runParameter = new RunParameter(); ArrayList<JMXInPath> inputtedPaths = new ArrayList<JMXInPath>(); try { CommandLine cli = parser.parse(options, args); if (args.length == 0 || cli.hasOption('h')) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp("jmxstat jmxURL [jmx path lists]", "To view statuses of jmx paths:", options, "@Support by LogicMonitor", true); exit(0); } runParameter.setValid(true); if (cli.hasOption('a')) { runParameter.setShowAliasTitle(true); } if (cli.hasOption('f')) { List<JMXInPath> paths_from_file = getPathsFromFile(cli.getOptionValue('f')); inputtedPaths.addAll(paths_from_file); } if (cli.hasOption('t')) { try { int times = Integer.valueOf(cli.getOptionValue('t')); if (times < 0) System.out.println("The argument after <-t> is useless here since it's a negative number."); else runParameter.setTimes(times); } catch (Exception e) { runParameter.setValid(false); runParameter.setValidInfo( runParameter.getValidInfo() + "Argument after <-t> should be an integer\n"); } } if (cli.hasOption('u')) { runParameter.setUsername(cli.getOptionValue('u')); } if (cli.hasOption('p')) { runParameter.setPassword(cli.getOptionValue('p')); } if (cli.hasOption('i')) { try { int interval = Integer.valueOf(cli.getOptionValue('i')); if (interval < 0) System.err.println("The interval value is negative! Using default set!"); else { runParameter.setInterval(interval); } } catch (Exception e) { runParameter.setValid(false); runParameter.setValidInfo( runParameter.getValidInfo() + "Argument after <-i> should be an integer\n"); } } List<String> others = cli.getArgList(); boolean jmxurl_found = false; for (String other : others) { if (other.toLowerCase().startsWith("service:jmx")) { if (jmxurl_found) { runParameter.setValid(false); runParameter.setValidInfo(runParameter.getValidInfo() + "multiple jmxurl found\n"); return runParameter; } else { jmxurl_found = true; runParameter.setSurl(other.toLowerCase()); } } else { inputtedPaths.add(new JMXInPath(other)); } } if (!jmxurl_found) { runParameter.setValid(false); runParameter.setValidInfo(runParameter.getValidInfo() + "No jmxurl found. The jmxurl should start with \"service:jmx\" \n"); } } catch (ParseException e) { runParameter.setValid(false); runParameter.setValidInfo(runParameter.getValidInfo() + "Exception caught while parse arguments!\n"); } if (inputtedPaths.isEmpty()) { runParameter.setValid(false); runParameter.setValidInfo(runParameter.getValidInfo() + "No jmx paths inputted"); } else { runParameter.setPaths(inputtedPaths); } return runParameter; } /** * Get the paths from the configure file * @param filePath path to the configure file * @return JMX in paths */ private static List<JMXInPath> getPathsFromFile(String filePath) { ArrayList<JMXInPath> pathsFromFile = new ArrayList<JMXInPath>(); String strFromFile = FileHelper.loadFileIntoString(filePath); if (strFromFile == null || strFromFile.isEmpty()) return pathsFromFile; JSONObject confJSON = JSONObject.fromObject(strFromFile); // TODO: the usage of version # String confVersion = confJSON.optString("version"); JSONArray pathArrays = confJSON.optJSONArray("paths"); if (pathArrays == null || pathArrays.isEmpty()) return pathsFromFile; for (Object ob : pathArrays) { JSONObject pathStrJSON = JSONObject.fromObject(ob); JMXInPath inPath = new JMXInPath(pathStrJSON.optString("path", null), pathStrJSON.optString("alias", null)); String opt = pathStrJSON.optString("operate", null); int scale = pathStrJSON.optInt("scale", 0); String unit = pathStrJSON.optString("unit", null); if (unit != null) inPath.setUnit(unit); if (opt != null && !opt.isEmpty() && scale != 0) { inPath.setOperator(opt); inPath.setScale(scale); } pathsFromFile.add(inPath); } return pathsFromFile; } }