有没有干净的方法将上下文数据传递给@Asynchronous ejb 调用? [英] Is there clean way to pass context data to @Asynchronous ejb call?

问题描述

在wildfly中，我异步执行无状态ejb方法(它用@Asynchronous注解映射).在调用方法中，我在线程本地中有一些上下文信息.将此数据传递给异步方法的最佳方法是什么?我不想向异步方法签名添加其他参数.

In wildfly I execute stateless ejb method asynchronously (it is mapped with @Asynchronous annotation). In the calling method I have some context information in thread local. What is the best way to pass this data to async method? I don't want to add additional parameter to async method signature.

推荐答案

有一点丑陋的管道可以解决如下(wildfly 8.x.x):

With a bit of ugly plumbing it can be resolved as follows (wildfly 8.x.x):

if (SecurityContextAssociation.getSecurityContext()==null)
    SecurityContextAssociation.setSecurityContext(new JBossSecurityContext("background-job"));
SecurityContext current = SecurityContextAssociation.getSecurityContext();
final Object cred = current.getUtil().getCredential();
final Subject s = current.getUtil().getSubject();
final Principal up = current.getUtil().getUserPrincipal();
boolean needToUpdatePrincipal=true;
if (up instanceof TenantPrincipal) {
    if (t.getTenantName().equals(((TenantPrincipal) up).getAdditonalField())) {
        needToUpdatePrincipal=false;
    }
}
if (needToUpdatePrincipal) {
    TenantPrincipal tp=new TenantPrincipal(up.getName());
    tp.setAdditionalField(t.getTenantName());
    current.getUtil().createSubjectInfo(
            , cred, (Subject) s);
}

基本上，您需要创建自己的 Principal 类并在其实例的附加字段中设置上下文数据.

Basically you need to create your own Principal class and set context data in the additional field of its instance.

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