mirror of https://github.com/alibaba/arthas.git
remove oshi dependency. #278
hengyunabc
6 years ago
parent
54fbb6e602
commit
857488fffd
@ -0,0 +1,111 @@
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package com.taobao.arthas.boot;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* A class for executing on the command line and returning the result of
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* execution.
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*
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* @author alessandro[at]perucchi[dot]org
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*/
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public class ExecutingCommand {
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private static final Logger LOG = LoggerFactory.getLogger(ExecutingCommand.class);
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private ExecutingCommand() {
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}
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/**
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* Executes a command on the native command line and returns the result.
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*
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* @param cmdToRun
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* Command to run
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* @return A list of Strings representing the result of the command, or empty
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* string if the command failed
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*/
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public static List<String> runNative(String cmdToRun) {
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String[] cmd = cmdToRun.split(" ");
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return runNative(cmd);
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}
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/**
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* Executes a command on the native command line and returns the result line by
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* line.
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*
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* @param cmdToRunWithArgs
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* Command to run and args, in an array
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* @return A list of Strings representing the result of the command, or empty
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* string if the command failed
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*/
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public static List<String> runNative(String[] cmdToRunWithArgs) {
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Process p = null;
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try {
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p = Runtime.getRuntime().exec(cmdToRunWithArgs);
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} catch (SecurityException e) {
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LOG.trace("Couldn't run command {}: {}", Arrays.toString(cmdToRunWithArgs), e);
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return new ArrayList<String>(0);
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} catch (IOException e) {
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LOG.trace("Couldn't run command {}: {}", Arrays.toString(cmdToRunWithArgs), e);
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return new ArrayList<String>(0);
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}
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ArrayList<String> sa = new ArrayList<String>();
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BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
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try {
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String line;
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while ((line = reader.readLine()) != null) {
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sa.add(line);
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}
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p.waitFor();
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} catch (IOException e) {
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LOG.trace("Problem reading output from {}: {}", Arrays.toString(cmdToRunWithArgs), e);
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return new ArrayList<String>(0);
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} catch (InterruptedException ie) {
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LOG.trace("Interrupted while reading output from {}: {}", Arrays.toString(cmdToRunWithArgs), ie);
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Thread.currentThread().interrupt();
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} finally {
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IOUtils.close(reader);
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}
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return sa;
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}
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/**
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* Return first line of response for selected command.
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*
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* @param cmd2launch
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* String command to be launched
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* @return String or empty string if command failed
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*/
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public static String getFirstAnswer(String cmd2launch) {
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return getAnswerAt(cmd2launch, 0);
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}
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/**
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* Return response on selected line index (0-based) after running selected
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* command.
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*
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* @param cmd2launch
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* String command to be launched
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* @param answerIdx
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* int index of line in response of the command
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* @return String whole line in response or empty string if invalid index or
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* running of command fails
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*/
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public static String getAnswerAt(String cmd2launch, int answerIdx) {
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List<String> sa = ExecutingCommand.runNative(cmd2launch);
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if (answerIdx >= 0 && answerIdx < sa.size()) {
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return sa.get(answerIdx);
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}
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return "";
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}
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}
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@ -0,0 +1,38 @@
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package com.taobao.arthas.boot;
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/**
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*
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* @author hengyunabc 2018-11-08
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*
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*/
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public class OSUtils {
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static PlatformEnum platform;
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static {
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String osName = System.getProperty("os.name");
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if (osName.startsWith("Linux")) {
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platform = PlatformEnum.LINUX;
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} else if (osName.startsWith("Mac") || osName.startsWith("Darwin")) {
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platform = PlatformEnum.MACOSX;
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} else if (osName.startsWith("Mac") || osName.startsWith("Darwin")) {
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platform = PlatformEnum.MACOSX;
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} else if (osName.startsWith("Windows")) {
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platform = PlatformEnum.WINDOWS;
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} else {
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platform = PlatformEnum.UNKNOWN;
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}
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}
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public static boolean isWindows() {
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return platform == PlatformEnum.WINDOWS;
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}
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public static boolean isLinux() {
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return platform == PlatformEnum.LINUX;
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}
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public static boolean isMac() {
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return platform == PlatformEnum.MACOSX;
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}
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}
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@ -0,0 +1,22 @@
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package com.taobao.arthas.boot;
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/**
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* Enum of supported operating systems.
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*
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*/
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public enum PlatformEnum {
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/**
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* Microsoft Windows
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*/
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WINDOWS,
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/**
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* A flavor of Linux
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*/
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LINUX,
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/**
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* macOS (OS X)
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*/
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MACOSX,
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UNKNOWN;
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}
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