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The ALIYUN::ROS::WaitCondition type is used to create an instance for processing UserData messages.

Syntax

{
    "Type" : "ALIYUN::ROS::WaitCondition",
    "Properties" : {
         "Count" : Integer,
         "Handle" : String,
         "Timeout" : Integer
    }
}

Attributes

Attribute name	Type	Required?	Description	Constraint
Handle	string	Yes	Referenced ALIYUN::ROS::WaitConditionHandle instance.
Timeout	number	Yes	Timeout time for UserData message reception.	Value range: [1, 43200]; unit: seconds.
Count	number	No	Total number of messages to be received.

Return values

Fn::GetAtt

Data: received message content.

Example

{
  "ROSTemplateFormatVersion" : "2015-09-01",
  "Resources" : {
    "WaitCondition": {
      "Type": "ALIYUN::ROS::WaitCondition",
      "Properties": {
        "Handle": {"Ref": "WaitConHandle"},
        "Timeout": 5,
        "Count": 2
      }
    },
    "WaitConHandle": {
        "Type": "ALIYUN::ROS::WaitConditionHandle"
    }
  },
  "Outputs" : {
    "CurlCli" : {
       "Value" : { "Fn::GetAtt": ["WaitConHandle", "CurlCli"] }
    },
    "Data" : {
       "Value" : { "Fn::GetAtt": ["WaitCondition", "Data"] }
     }
  }
}