Coverage Summary for Class: SystemUtils (co.rsk.util)

Class Class, % Method, % Line, %
SystemUtils 0% (0/1) 0% (0/6) 0% (0/14)


1 /* 2  * This file is part of RskJ 3  * Copyright (C) 2020 RSK Labs Ltd. 4  * 5  * This program is free software: you can redistribute it and/or modify 6  * it under the terms of the GNU Lesser General Public License as published by 7  * the Free Software Foundation, either version 3 of the License, or 8  * (at your option) any later version. 9  * 10  * This program is distributed in the hope that it will be useful, 11  * but WITHOUT ANY WARRANTY; without even the implied warranty of 12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13  * GNU Lesser General Public License for more details. 14  * 15  * You should have received a copy of the GNU Lesser General Public License 16  * along with this program. If not, see <http://www.gnu.org/licenses/>. 17  */ 18 package co.rsk.util; 19  20 import org.apache.commons.lang3.tuple.Pair; 21 import org.slf4j.Logger; 22  23 import java.util.Arrays; 24 import java.util.List; 25 import java.util.stream.Collectors; 26 import java.util.stream.Stream; 27  28 public class SystemUtils { 29  30  private static final List<String> SYSTEM_PROPERTIES = Arrays.asList( 31  "java.version", 32  "java.runtime.name", "java.runtime.version", 33  "java.vm.name", "java.vm.version", "java.vm.vendor", 34  "os.name", "os.version", "os.arch" 35  ); 36  37  private SystemUtils() { /* hidden */ } 38  39  /** 40  * Helper method that prints some system and runtime properties available to JVM. 41  */ 42  public static void printSystemInfo(Logger logger) { 43  String sysInfo = Stream.concat( 44  systemPropsStream(), 45  runtimePropsStream() 46  ).map(p -> p.getKey() + ": " + p.getValue()).collect(Collectors.joining("\r ")); 47  48  logger.info("System info:\r {}", sysInfo); 49  } 50  51  private static Stream<Pair<String, String>> systemPropsStream() { 52  return SYSTEM_PROPERTIES.stream().map(sp -> Pair.of(sp, System.getProperty(sp))); 53  } 54  55  private static Stream<Pair<String, String>> runtimePropsStream() { 56  Runtime runtime = Runtime.getRuntime(); 57  return Stream.of( 58  Pair.of("processors", Integer.toString(runtime.availableProcessors())), 59  Pair.of("memory.free", Long.toString(runtime.freeMemory())), 60  Pair.of("memory.max", Long.toString(runtime.maxMemory())), 61  Pair.of("memory.total", Long.toString(runtime.totalMemory())) 62  ); 63  } 64 }