java - Docker 容器无法使用 Java 12 运行 jacoco 代理

Question

我正在尝试使用我的 Spring Boot 应用程序运行 java docker 镜像。我想用它进行 API 测试，并且还想收集代码覆盖率。但是我无法使 jacocoagent 在 docker 容器内运行。难道我做错了什么？我是否缺少某些地方的设置？当我不添加代理时，常规 bootJar 运行顺利。此外，我可以在 docker env 之外毫无问题地执行相同的命令。所以这似乎不是一个java bug。

这是我的 docker-compose 文件:

version: '3.7'
services:
  bootJarTestApi:
    image: openjdk:12.0.1-jdk-oracle
    environment:
      - "JAVA_TOOL_OPTIONS=-javaagent:/jacoco-agent/jacocoagent.jar=destfile=/jacoco-report/apiDockerTest.exec,output=file"
    ports:
      - 2020:2020
      - 2021:2021
    volumes:
      - "./build/libs/bootJar.jar:/bootJar.jar"
      - "./build/libs/jacoco-agent/jacocoagent.jar:/jacoco-agent/jacocoagent.jar"
      - "./build/jacoco/:/jacoco-report/"
    entrypoint: ["java", "-jar",
#                 "-javaagent:/jacoco-agent/jacocoagent.jar=destfile=/jacoco-report/apiDockerTest.exec,output=file",
                 "-Dspring.profiles.active=dev",
                 "/bootJar.jar"]

当我尝试运行它时，docker 说:

bootJarTestApi_1  | Picked up JAVA_TOOL_OPTIONS: -javaagent:/jacoco-agent/jacocoagent.jar=destfile=/jacoco-report/apiDockerTest.exec,output=file
bootJarTestApi_1  | FATAL ERROR in native method: processing of -javaagent failed
bootJarTestApi_1  | mmap failed for CEN and END part of zip file
bootJarTestApi_1  | Unexpected error (103) returned by AddToSystemClassLoaderSearch
bootJarTestApi_1  | Unable to add /jacoco-agent/jacocoagent.jar to system class path - the system class loader does not define the appendToClassPathForInstrumentation method or the method failed
bootJarTestApi_1  | #
bootJarTestApi_1  | # A fatal error has been detected by the Java Runtime Environment:
bootJarTestApi_1  | #
bootJarTestApi_1  | #  SIGSEGV (0xb) at pc=0x00007f85d2728b07, pid=1, tid=7
bootJarTestApi_1  | #
bootJarTestApi_1  | # JRE version: OpenJDK Runtime Environment (12.0.1+12) (build 12.0.1+12)
bootJarTestApi_1  | # Java VM: OpenJDK 64-Bit Server VM (12.0.1+12, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
bootJarTestApi_1  | # Problematic frame:
bootJarTestApi_1  | # C  [libc.so.6+0x37b07]  abort+0x297
bootJarTestApi_1  | #
bootJarTestApi_1  | # Core dump will be written. Default location: Core dumps may be processed with "/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e" (or dumping to //core.1)
bootJarTestApi_1  | #
bootJarTestApi_1  | # An error report file with more information is saved as:
bootJarTestApi_1  | # //hs_err_pid1.log
bootJarTestApi_1  | #
bootJarTestApi_1  | # If you would like to submit a bug report, please visit:
bootJarTestApi_1  | #   http://bugreport.java.com/bugreport/crash.jsp
bootJarTestApi_1  | #
bootJarTestApi_1  | 
bootJarTestApi_1  | [error occurred during error reporting (), id 0xb, SIGSEGV (0xb) at pc=0x00007f85d2728b07]

Answer 1

看起来错误消息中的关键行是

mmap failed for CEN and END part of zip file

在 Google 中搜索这一行表明它始终与文件系统访问相关，但可能由多种原因引起 - 从错误的操作系统配置到某些文件系统的奇怪行为和 JVM 中的错误。因此，我认为这与特定代理无关，即与 JaCoCo 代理无关，并且您应该能够使用任何其他代理重现相同的情况。

你可以试试

• 不将卷用于代理文件，而是用于目录；
• 完全不使用代理的体积并将其直接放入图像中。