mirror of https://github.com/alibaba/arthas.git
add vmoption command. close #839
hengyunabc
6 years ago
parent
5dc091d38b
commit
58e77dc6f3
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package com.taobao.arthas.core.command.basic1000;
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import static com.taobao.text.ui.Element.label;
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import java.lang.management.ManagementFactory;
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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 com.sun.management.HotSpotDiagnosticMXBean;
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import com.sun.management.VMOption;
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import com.taobao.arthas.core.command.Constants;
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import com.taobao.arthas.core.shell.cli.Completion;
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import com.taobao.arthas.core.shell.cli.CompletionUtils;
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import com.taobao.arthas.core.shell.command.AnnotatedCommand;
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import com.taobao.arthas.core.shell.command.CommandProcess;
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import com.taobao.arthas.core.util.LogUtil;
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import com.taobao.arthas.core.util.StringUtils;
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import com.taobao.middleware.cli.annotations.Argument;
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import com.taobao.middleware.cli.annotations.Description;
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import com.taobao.middleware.cli.annotations.Name;
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import com.taobao.middleware.cli.annotations.Summary;
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import com.taobao.middleware.logger.Logger;
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import com.taobao.text.Decoration;
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import com.taobao.text.ui.TableElement;
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import com.taobao.text.util.RenderUtil;
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/**
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* vmoption command
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*
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* @author hengyunabc 2019-09-02
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*
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*/
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@Name("vmoption")
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@Summary("Display, and update the vm diagnostic options.")
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@Description("\nExamples:\n" + " vmoption\n" + " vmoption PrintGCDetails\n" + " vmoption PrintGCDetails true\n"
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+ Constants.WIKI + Constants.WIKI_HOME + "vmoption")
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public class VMOptionCommand extends AnnotatedCommand {
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private static final Logger logger = LogUtil.getArthasLogger();
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private String name;
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private String value;
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@Argument(index = 0, argName = "name", required = false)
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@Description("VMOption name")
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public void setOptionName(String name) {
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this.name = name;
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}
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@Argument(index = 1, argName = "value", required = false)
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@Description("VMOption value")
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public void setOptionValue(String value) {
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this.value = value;
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}
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@Override
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public void process(CommandProcess process) {
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run(process, name, value);
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}
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private static void run(CommandProcess process, String name, String value) {
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try {
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HotSpotDiagnosticMXBean hotSpotDiagnosticMXBean = ManagementFactory
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.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
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if (StringUtils.isBlank(name) && StringUtils.isBlank(value)) {
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// show all options
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process.write(renderVMOptions(hotSpotDiagnosticMXBean.getDiagnosticOptions(), process.width()));
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} else if (StringUtils.isBlank(value)) {
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// view the specified option
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VMOption option = hotSpotDiagnosticMXBean.getVMOption(name);
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if (option == null) {
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process.write("In order to change the system properties, you must specify the property value.\n");
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} else {
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process.write(renderVMOptions(Arrays.asList(option), process.width()));
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}
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} else {
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// change vm option
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hotSpotDiagnosticMXBean.setVMOption(name, value);
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process.write("Successfully updated the vm option.\n");
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process.write(name + "=" + hotSpotDiagnosticMXBean.getVMOption(name).getValue() + "\n");
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}
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} catch (Throwable t) {
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process.write("Error during setting vm option: " + t.getMessage() + "\n");
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logger.error("arthas", "Error during setting vm option", t);
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} finally {
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process.end();
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}
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}
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private static String renderVMOptions(List<VMOption> diagnosticOptions, int width) {
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TableElement table = new TableElement(1, 1, 1, 1).leftCellPadding(1).rightCellPadding(1);
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table.row(true, label("KEY").style(Decoration.bold.bold()), label("VALUE").style(Decoration.bold.bold()),
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label("ORIGIN").style(Decoration.bold.bold()),
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label("WRITEABLE").style(Decoration.bold.bold()));
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for (VMOption option : diagnosticOptions) {
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table.row(option.getName(), option.getValue(), "" + option.getOrigin(), "" + option.isWriteable());
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}
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return RenderUtil.render(table, width);
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}
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@Override
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public void complete(Completion completion) {
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HotSpotDiagnosticMXBean hotSpotDiagnosticMXBean = ManagementFactory
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.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
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List<VMOption> diagnosticOptions = hotSpotDiagnosticMXBean.getDiagnosticOptions();
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List<String> names = new ArrayList<String>(diagnosticOptions.size());
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for (VMOption option : diagnosticOptions) {
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names.add(option.getName());
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}
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CompletionUtils.complete(completion, names);
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}
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}
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@ -0,0 +1,53 @@
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vmoption
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===
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> Display, and update the vm diagnostic options.
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### Usage
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#### View all options
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```bash
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[arthas@56963]$ vmoption
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KEY VALUE ORIGIN WRITEABLE
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---------------------------------------------------------------------------------------------
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HeapDumpBeforeFullGC false DEFAULT true
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HeapDumpAfterFullGC false DEFAULT true
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HeapDumpOnOutOfMemory false DEFAULT true
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Error
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HeapDumpPath DEFAULT true
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CMSAbortablePrecleanW 100 DEFAULT true
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aitMillis
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CMSWaitDuration 2000 DEFAULT true
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CMSTriggerInterval -1 DEFAULT true
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PrintGC false DEFAULT true
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PrintGCDetails true MANAGEMENT true
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PrintGCDateStamps false DEFAULT true
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PrintGCTimeStamps false DEFAULT true
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PrintGCID false DEFAULT true
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PrintClassHistogramBe false DEFAULT true
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foreFullGC
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PrintClassHistogramAf false DEFAULT true
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terFullGC
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PrintClassHistogram false DEFAULT true
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MinHeapFreeRatio 0 DEFAULT true
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MaxHeapFreeRatio 100 DEFAULT true
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PrintConcurrentLocks false DEFAULT true
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```
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#### View individual option
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```bash
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[arthas@56963]$ vmoption PrintGCDetails
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KEY VALUE ORIGIN WRITEABLE
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---------------------------------------------------------------------------------------------
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PrintGCDetails false MANAGEMENT true
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```
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#### Update individual option
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```bash
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[arthas@56963]$ vmoption PrintGCDetails true
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Successfully updated the vm option.
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PrintGCDetails=true
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```
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