控制匯流排控制器

從 6.4 版本開始，HTTP 模組提供了 @EnableControlBusController 配置類註解，用於在 /control-bus 路徑下將 ControlBusController 作為 REST 服務公開。底層的 ControlBusControllerConfiguration 啟用了 ControlBusCommandRegistry 的預初始化，以便為上述 REST 服務公開所有可用的控制匯流排命令。/control-bus GET 請求以如下格式返回應用程式的所有控制匯流排命令

[
  {
    "beanName": "errorChannel",
    "commands": [
      {
        "command": "errorChannel.setShouldTrack",
        "description": "setShouldTrack",
        "parameterTypes": [
          "boolean"
        ]
      },
      {
        "command": "errorChannel.setLoggingEnabled",
        "description": "Use to disable debug logging during normal message flow",
        "parameterTypes": [
          "boolean"
        ]
      },
      {
        "command": "errorChannel.isLoggingEnabled",
        "description": "isLoggingEnabled",
        "parameterTypes": []
      }
    ]
  },
  {
    "beanName": "testManagementComponent",
    "commands": [
      {
        "command": "testManagementComponent.operation2",
        "description": "operation2",
        "parameterTypes": []
      },
      {
        "command": "testManagementComponent.operation",
        "description": "operation",
        "parameterTypes": []
      },
      {
        "command": "testManagementComponent.operation",
        "description": "operation",
        "parameterTypes": [
          "int",
          "java.lang.String"
        ]
      },
      {
        "command": "testManagementComponent.operation",
        "description": "operation",
        "parameterTypes": [
          "int"
        ]
      }
    ]
  }
]

本質上，是 ControlBusController.ControlBusBean 例項的 JSON 序列化列表。每個條目都是一個 bean，其中包含一系列符合控制匯流排條件的可用方法（有關更多資訊，請參閱 ControlBusMethodFilter），以及它們的引數型別和來自 @ManagedOperation 或 @ManagedAttribute（否則回退到方法名）的描述。

對 /control-bus/{beanName.methodName} 的 POST 方法會呼叫該命令。請求正文可能包含要執行的命令的值及其型別的列表。例如，對於該類的帶 int 引數的 operation 命令

@ManagedResource
class TestManagementComponent {

    @ManagedOperation
    public void operation() {

    }

    @ManagedOperation(description = "The overloaded operation with int argument")
    public void operation(int input) {

    }

    @ManagedOperation(description = "The overloaded operation with two arguments")
    public void operation(int input1, String input2) {

    }

    @ManagedOperation
    public int operation2() {
    	return 123;
    }

}

可以使用帶有請求正文的 POST 方法呼叫 /testManagementComponent.operation，如下所示

[
    {
        "value": "1",
        "parameterType": "int"
    }
]

有關更多資訊，請參閱控制匯流排。