Log4j ThreadContext MultiThread不会继承

Question

我遇到了这个post的问题

下面是我的代码示例

public class StackOverflow implements RequestHandler<Map<String, String>, ApiGatewayResponse> {
    private static final Logger LOGGER = LogManager.getLogger(StackOverflow.class);

    public abstract class StreamGobbler extends Thread {
        // Working Interceptor using this.print("message")
        public abstract void print(String line);
    }

    private class ErrStreamGobbler extends StreamGobbler {
        ErrStreamGobbler(InputStream in) { super(in); }

        @Override
        public void print(String line) { LOGGER.error(line); }
    }

    private class OutStreamGobbler extends StreamGobbler {
        OutStreamGobbler(InputStream in) { super(in); }

        @Override
        public void print(String line) { LOGGER.info(line); }
    }


    // MAIN METHOD
    @Override
    public ApiGatewayResponse handleRequest(Map<String, String> params, Context context) {
        // ThreadContext propagation
        System.setProperty("isThreadContextMapInheritable", "true");
        ThreadContext.put("foo", "bar");

        LOGGER.info("Hello from main");

        // My process will return value on System.in & System.out
        ProcessBuilder pb = new ProcessBuilder("sh", String.format("batchs/JOB_FOO/run.sh"));
        Process p = pb.start();
        // Intercept those logs
        new ErrStreamGobbler(p.getErrorStream()).start();
        new OutStreamGobbler(p.getInputStream()).start();
        p.waitFor();
    }
}

来自LOGGER.info("Hello from main");的ThreadContext可以正常工作，并且还可以打印foo: bar。

但是我的子线程StreamGobbler没有得到ThreadContext，并且如果isThreadContextMapInheritable被设置为true，也不会将foo: bar作为log4j属性事件输出。

Answer 1

刚刚遇到了这个问题。发现在应用程序启动时设置-DisThreadContextMapInheritable=true有效，即使在代码中设置它不起作用。

Answer 2

使用自定义的ThreadPoolExecutor确实解决了我的问题。

使用此answer找到此解决方案。