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5.3. Runtime bean 部署信息

运行时元数据可从 bean 部署中获得，以便您可以监控 Bean 的性能。

运行时元数据可用于以下 Bean 类型：

  • 有状态会话 Bean
  • 无状态会话 Bean
  • 单例 bean
  • 消息驱动的 Bean

Bean 应用将元数据作为代码或部署描述符中的注释包含在内。应用可以同时使用这两个选项。有关可用运行时数据的详情，请查看 JBoss EAP 管理模型中的 ejb3 子系统。

通过管理 CLI 提供了 Jakarta Enterprise Beans 的运行时数据，以便您评估 Jakarta 企业 Bean 的性能。

用于获取所有类型的 Bean 的运行时数据的命令使用以下模式： 

/deployment=<deployment_name>/subsystem=ejb3/<bean_type>=<bean_name>:read-resource(include-runtime)
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将 <deployment_name> 替换为检索运行时数据的部署 .jar 文件的名称。将 <bean_type> 替换为检索运行时数据的 bean 类型。以下选项对这个占位符有效：

  • stateless-session-bean
  • stateful-session-bean
  • singleton-bean
  • message-driven-bean

将 <bean_name> 替换为您要检索运行时数据的 bean 的名称。

系统将结果提供给 stdout，格式为 JavaScript 对象表示法(JSON)数据。

获取名为 ejb-management.jar的文件中的名为 ManagedSingletonBean 的单例的运行时数据示例

/deployment=ejb-management.jar/subsystem=ejb3/singleton-bean=ManagedSingletonBean:read-resource(include-runtime)
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单例 bean 的输出运行时数据示例

{
    "outcome" => "success",
    "result" => {
        "async-methods" => ["void async(int, int)"],
        "business-local" => ["sample.ManagedSingletonBean"],
        "business-remote" => ["sample.BusinessInterface"],
        "component-class-name" => "sample.ManagedSingletonBean",
        "concurrency-management-type" => undefined,
        "declared-roles" => [
            "Role3",
            "Role2",
            "Role1"
        ],
        "depends-on" => undefined,
        "execution-time" => 156L,
        "init-on-startup" => false,
        "invocations" => 3L,
        "jndi-names" => [
            "java:module/ManagedSingletonBean!sample.ManagedSingletonBean",
            "java:global/ejb-management/ManagedSingletonBean!sample.ManagedSingletonBean",
            "java:app/ejb-management/ManagedSingletonBean!sample.ManagedSingletonBean",
            "java:app/ejb-management/ManagedSingletonBean!sample.BusinessInterface",
            "java:global/ejb-management/ManagedSingletonBean!sample.BusinessInterface",
            "java:module/ManagedSingletonBean!sample.BusinessInterface"
        ],
        "methods" => {"doIt" => {
            "execution-time" => 156L,
            "invocations" => 3L,
            "wait-time" => 0L
        }},
        "peak-concurrent-invocations" => 1L,
        "run-as-role" => "Role3",
        "security-domain" => "other",
        "timeout-method" => "public void sample.ManagedSingletonBean.timeout(javax.ejb.Timer)",
        "timers" => [{
            "time-remaining" => 4304279L,
            "next-timeout" => 1577768415000L,
            "calendar-timer" => true,
            "persistent" => false,
            "info" => "timer1",
            "schedule" => {
                "year" => "*",
                "month" => "*",
                "day-of-month" => "*",
                "day-of-week" => "*",
                "hour" => "0",
                "minute" => "0",
                "second" => "15",
                "timezone" => undefined,
                "start" => undefined,
                "end" => undefined
            }
        }],
        "transaction-type" => "CONTAINER",
        "wait-time" => 0L,
        "service" => {"timer-service" => undefined}
    }
}
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检索名为 ejb-management.jar的文件中部署的名为 NoTimerMDB 的消息的运行时数据示例

/deployment=ejb-management.jar/subsystem=ejb3/message-driven-bean=NoTimerMDB:read-resource(include-runtime)
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消息驱动的 Bean 的输出示例

{
    "outcome" => "success",
    "result" => {
        "activation-config" => [
            ("destination" => "java:/queue/NoTimerMDB-queue"),
            ("destinationType" => "javax.jms.Queue"),
            ("acknowledgeMode" => "Auto-acknowledge")
        ],
        "component-class-name" => "sample.NoTimerMDB",
        "declared-roles" => [
            "Role3",
            "Role2",
            "Role1"
        ],
        "delivery-active" => true,
        "execution-time" => 0L,
        "invocations" => 0L,
        "message-destination-link" => "queue/NoTimerMDB-queue",
        "message-destination-type" => "javax.jms.Queue",
        "messaging-type" => "javax.jms.MessageListener",
        "methods" => {},
        "peak-concurrent-invocations" => 0L,
        "pool-available-count" => 16,
        "pool-create-count" => 0,
        "pool-current-size" => 0,
        "pool-max-size" => 16,
        "pool-name" => "mdb-strict-max-pool",
        "pool-remove-count" => 0,
        "run-as-role" => "Role3",
        "security-domain" => "other",
        "timeout-method" => undefined,
        "timers" => [],
        "transaction-type" => "CONTAINER",
        "wait-time" => 0L,
        "service" => undefined
    }
}
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