| /* |
| * 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.dubbo.remoting; |
| |
| import java.net.NetworkInterface; |
| import java.net.SocketException; |
| import java.text.DecimalFormat; |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| import java.util.List; |
| |
| /** |
| * PerformanceUtils |
| */ |
| public class PerformanceUtils { |
| |
| private static final int WIDTH = 64; |
| |
| public static String getProperty(String key, String defaultValue) { |
| String value = System.getProperty(key); |
| if (value == null || value.trim().length() == 0 || value.startsWith("$")) { |
| return defaultValue; |
| } |
| return value.trim(); |
| } |
| |
| public static int getIntProperty(String key, int defaultValue) { |
| String value = System.getProperty(key); |
| if (value == null || value.trim().length() == 0 || value.startsWith("$")) { |
| return defaultValue; |
| } |
| return Integer.parseInt(value.trim()); |
| } |
| |
| public static boolean getBooleanProperty(String key, boolean defaultValue) { |
| String value = System.getProperty(key); |
| if (value == null || value.trim().length() == 0 || value.startsWith("$")) { |
| return defaultValue; |
| } |
| return Boolean.parseBoolean(value.trim()); |
| } |
| |
| public static List<String> getEnvironment() { |
| List<String> environment = new ArrayList<String>(); |
| environment.add("OS: " + System.getProperty("os.name") + " " + System.getProperty("os.version") + " " |
| + System.getProperty("os.arch", "")); |
| environment.add("CPU: " + Runtime.getRuntime().availableProcessors() + " cores"); |
| environment.add( |
| "JVM: " + System.getProperty("java.vm.name") + " " + System.getProperty("java.runtime.version")); |
| environment.add("Memory: " |
| + DecimalFormat.getIntegerInstance().format(Runtime.getRuntime().totalMemory()) + " bytes (Max: " |
| + DecimalFormat.getIntegerInstance().format(Runtime.getRuntime().maxMemory()) + " bytes)"); |
| NetworkInterface ni = PerformanceUtils.getNetworkInterface(); |
| if (ni != null) { |
| environment.add("Network: " + ni.getDisplayName()); |
| } |
| return environment; |
| } |
| |
| public static void printSeparator() { |
| StringBuilder pad = new StringBuilder(); |
| for (int i = 0; i < WIDTH; i++) { |
| pad.append('-'); |
| } |
| System.out.println("+" + pad + "+"); |
| } |
| |
| public static void printBorder() { |
| StringBuilder pad = new StringBuilder(); |
| for (int i = 0; i < WIDTH; i++) { |
| pad.append('='); |
| } |
| System.out.println("+" + pad + "+"); |
| } |
| |
| public static void printBody(String msg) { |
| StringBuilder pad = new StringBuilder(); |
| int len = WIDTH - msg.length() - 1; |
| if (len > 0) { |
| for (int i = 0; i < len; i++) { |
| pad.append(' '); |
| } |
| } |
| System.out.println("| " + msg + pad + "|"); |
| } |
| |
| public static void printHeader(String msg) { |
| StringBuilder pad = new StringBuilder(); |
| int len = WIDTH - msg.length(); |
| if (len > 0) { |
| int half = len / 2; |
| for (int i = 0; i < half; i++) { |
| pad.append(' '); |
| } |
| } |
| System.out.println("|" + pad + msg + pad + ((len % 2 == 0) ? "" : " ") + "|"); |
| } |
| |
| public static NetworkInterface getNetworkInterface() { |
| try { |
| Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces(); |
| if (interfaces != null) { |
| while (interfaces.hasMoreElements()) { |
| try { |
| return interfaces.nextElement(); |
| } catch (Throwable e) { |
| } |
| } |
| } |
| } catch (SocketException e) { |
| } |
| return null; |
| } |
| } |