commit dd6bada7eadc762cd2a2dfa810dbebfb4af673a6 Author: icksishu@gmail.com Date: Tue Jan 13 16:15:17 2026 +0900 종료, 상태 등 명령어 송신 기능 #1 - 완료 diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..8af972c --- /dev/null +++ b/.gitattributes @@ -0,0 +1,3 @@ +/gradlew text eol=lf +*.bat text eol=crlf +*.jar binary diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c2065bc --- /dev/null +++ b/.gitignore @@ -0,0 +1,37 @@ +HELP.md +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ diff --git a/HELP.md b/HELP.md new file mode 100644 index 0000000..a5b6891 --- /dev/null +++ b/HELP.md @@ -0,0 +1,14 @@ +# Getting Started + +### Reference Documentation +For further reference, please consider the following sections: + +* [Official Gradle documentation](https://docs.gradle.org) +* [Spring Boot Gradle Plugin Reference Guide](https://docs.spring.io/spring-boot/3.5.9/gradle-plugin) +* [Create an OCI image](https://docs.spring.io/spring-boot/3.5.9/gradle-plugin/packaging-oci-image.html) + +### Additional Links +These additional references should also help you: + +* [Gradle Build Scans – insights for your project's build](https://scans.gradle.com#gradle) + diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..22c2809 --- /dev/null +++ b/build.gradle @@ -0,0 +1,34 @@ +plugins { + id 'java' + id 'org.springframework.boot' version '3.4.3' + id 'io.spring.dependency-management' version '1.1.7' +} + +group = 'com.bsmlab.dfx' +version = '0.0.1-SNAPSHOT' +description = 'DFX Command' + +java { + toolchain { + languageVersion = JavaLanguageVersion.of(17) + } +} + +bootRun { + // 실행시 jvm에 -D 옵션을 적용하기 위하여 설정 + systemProperties System.properties +} + +repositories { + mavenCentral() +} + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter' + testImplementation 'org.springframework.boot:spring-boot-starter-test' + testRuntimeOnly 'org.junit.platform:junit-platform-launcher' +} + +tasks.named('test') { + useJUnitPlatform() +} diff --git a/gradlew b/gradlew new file mode 100644 index 0000000..23d15a9 --- /dev/null +++ b/gradlew @@ -0,0 +1,251 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed 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 +# +# https://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. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH="\\\"\\\"" + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..db3a6ac --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,94 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH= + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..07a8f73 --- /dev/null +++ b/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'dfxcmd' diff --git a/src/docs/script/dfxcmd.sh b/src/docs/script/dfxcmd.sh new file mode 100644 index 0000000..6d0686e --- /dev/null +++ b/src/docs/script/dfxcmd.sh @@ -0,0 +1,11 @@ +#!/bin/sh +AGENT_HOME=/home/dfxagent/agent +JAVA_HOME=$JAVA_HOME + + +java -XX:TieredStopAtLevel=1 -jar $AGENT_HOME/lib/dfxagent.jar -Xms2048m -Xmx8192m --setting.file=$AGENT_HOME/conf/settings.json & +#JDK: Red Hat OpenJDK 17.0.11+9 (LTS), OS: Rocky Linux 8.10 사용 중 하기의 오류 발생 -> -XX:TieredStopAtLevel=1 추가 (C1만 사용하여 C2 비활성화) +#크래시 시그널: SIGSEGV +#문제 프레임: PhaseOutput::BuildOopMaps() (HotSpot C2 JIT 내부) +#크래시 스레드: "C2 CompilerThread2" (JIT 컴파일러 스레드) +#크래시 직전 컴파일 중이던 메서드: C2: ... org.springframework.boot.loader.net.protocol.jar.Handler::openConnection (5 bytes) \ No newline at end of file diff --git a/src/main/java/com/bsmlab/dfx/cmd/DfxcmdApplication.java b/src/main/java/com/bsmlab/dfx/cmd/DfxcmdApplication.java new file mode 100644 index 0000000..56eff70 --- /dev/null +++ b/src/main/java/com/bsmlab/dfx/cmd/DfxcmdApplication.java @@ -0,0 +1,112 @@ +package com.bsmlab.dfx.cmd; + +import org.springframework.boot.autoconfigure.SpringBootApplication; + +import javax.management.MBeanServerConnection; +import javax.management.MalformedObjectNameException; +import javax.management.ObjectName; +import javax.management.remote.JMXConnector; +import java.io.IOException; +import java.util.Set; + +@SpringBootApplication +public class DfxcmdApplication { + + public static void main(String[] args) { + if (args.length < 2) { + usage(); + System.exit(1); + } + + String agentId = args[0]; + String command = args[1]; + + // shutdown 옵션 + int exitCode = 0; + int delaySec = 0; + + if ("shutdown".equalsIgnoreCase(command)) { + // dfxcmd shutdown [exitCode] [delaySec] + if (args.length >= 3) exitCode = Integer.parseInt(args[2]); + if (args.length >= 4) delaySec = Integer.parseInt(args[3]); + } + + ObjectName targetName = null; + try { + targetName = new ObjectName("com.bsmlab.dfx.agent:type=Control,agentId=" + ObjectName.quote(agentId)); + } + catch (MalformedObjectNameException e) { + println("cannot find a jvm for " + agentId + " by ObjectName"); + } + + // 1) 타깃 JVM 찾기 + JmxTarget target = null; + try { + target = JmxLocalAttach.findTargetJvmByMBean(targetName); + } + catch (Exception e) { + println("cannot find a jmx for " + agentId + " by MBean"); + println(e.getMessage()); + } + + if (target == null) { + System.err.println("Target dfxagent not found for agentId=" + agentId); + System.exit(2); + } + + try (JMXConnector connector = JmxLocalAttach.connect(target.pid())) { + MBeanServerConnection mbsc = connector.getMBeanServerConnection(); + + // 2) 정말 등록돼있는지 확인(안전) + Set names = mbsc.queryNames(targetName, null); + if (names == null || names.isEmpty()) { + System.err.println("MBean not found in target JVM. agentId=" + agentId); + System.exit(3); + } + + switch (command.toLowerCase()) { + case "status" -> { + String status = (String) mbsc.invoke( + targetName, + "status", + new Object[]{}, + new String[]{} + ); + System.out.println("status (agentId=" + agentId + ", status=" + status + ")"); + } + case "shutdown" -> { + mbsc.invoke( + targetName, + "shutdown", + new Object[]{exitCode, delaySec}, + new String[]{"int", "int"} + ); + System.out.println("shutdown requested (agentId=" + agentId + ", exitCode=" + exitCode + ", delaySec=" + delaySec + ")"); + } + default -> { + System.err.println("Unknown command: " + command); + usage(); + System.exit(4); + } + } + } + catch (IOException e) { + println("exception on JMXConnector"); + println(e.getLocalizedMessage()); + } + catch (Exception e) { + println("exception on JMXConnector"); + println(e.getLocalizedMessage()); + } + } + + private static void usage() { + System.out.println("Usage:"); + System.out.println(" dfxcmd status"); + System.out.println(" dfxcmd shutdown [exitCode] [delaySec]"); + } + + private static void println(String str) { + System.out.println(str); + } +} diff --git a/src/main/java/com/bsmlab/dfx/cmd/JmxLocalAttach.java b/src/main/java/com/bsmlab/dfx/cmd/JmxLocalAttach.java new file mode 100644 index 0000000..65a33e0 --- /dev/null +++ b/src/main/java/com/bsmlab/dfx/cmd/JmxLocalAttach.java @@ -0,0 +1,64 @@ +package com.bsmlab.dfx.cmd; + +import com.sun.tools.attach.VirtualMachineDescriptor; + +import javax.management.MBeanServerConnection; +import javax.management.ObjectName; + +import com.sun.tools.attach.VirtualMachine; +import javax.management.remote.JMXConnector; +import javax.management.remote.JMXConnectorFactory; +import javax.management.remote.JMXServiceURL; +import java.util.ArrayList; +import java.util.List; +import java.util.Set; + +public final class JmxLocalAttach { + + private JmxLocalAttach() {} + + public static JmxTarget findTargetJvmByMBean(ObjectName targetMBean) throws Exception { + List matches = new ArrayList<>(); + + for (VirtualMachineDescriptor vmd : VirtualMachine.list()) { + // dn 예) com.bsmlab.dfx.agent.DfxAgentApplication --setting.file=D:\projects\bsm-lab\dfx\dfxagent\src\docs\agent-tuf-a15-defree-oracle\conf\dfxagent-tuf-a15-defree-oracle.json + String dn = vmd.displayName(); + if (dn == null || dn.isBlank()) continue; + if (!dn.toLowerCase().contains("dfxagentapplication")) continue; + String pid = vmd.id(); + // PID별로 JMX 접속을 시도해서 MBean 존재 여부로 판별 + try (JMXConnector c = connect(pid)) { + MBeanServerConnection mbsc = c.getMBeanServerConnection(); + Set found = mbsc.queryNames(targetMBean, null); + if (found != null && !found.isEmpty()) { + matches.add(new JmxTarget(pid)); + } + } catch (Exception ignore) { + // 접근 불가/권한 불가/JVM이 아닌 프로세스/연결 실패 등은 스킵 + } + } + + if (matches.isEmpty()) return null; + if (matches.size() > 1) { + // 동일 agentId로 여러개가 뜨면 설계상 문제이므로 명확히 에러 + throw new IllegalStateException("Multiple JVMs matched for MBean " + targetMBean + " : " + matches); + } + return matches.get(0); + } + + /** + * target JVM에 attach 후 startLocalManagementAgent()로 로컬 JMX 주소를 만든 다음 접속합니다. + */ + public static JMXConnector connect(String pid) throws Exception { + VirtualMachine vm = VirtualMachine.attach(pid); + try { + String addr = vm.startLocalManagementAgent(); + if (addr == null || addr.isBlank()) { + throw new IllegalStateException("startLocalManagementAgent() returned empty for pid=" + pid); + } + return JMXConnectorFactory.connect(new JMXServiceURL(addr)); + } finally { + vm.detach(); + } + } +} diff --git a/src/main/java/com/bsmlab/dfx/cmd/JmxTarget.java b/src/main/java/com/bsmlab/dfx/cmd/JmxTarget.java new file mode 100644 index 0000000..d920849 --- /dev/null +++ b/src/main/java/com/bsmlab/dfx/cmd/JmxTarget.java @@ -0,0 +1,5 @@ +package com.bsmlab.dfx.cmd; + +public record JmxTarget(String pid) { + +} diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml new file mode 100644 index 0000000..2b82e24 --- /dev/null +++ b/src/main/resources/application.yaml @@ -0,0 +1,3 @@ +spring: + application: + name: dfxcmd