Connectivity/Agent Communication Protocol in MQTT

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Overview

Introduction for "WISEAgent communication protocol". WISEAgent communication protocol is base on standard MQTT protocol. We also define Advantech IoT Topic and message in JSON format. Follow standard to design our [Sensor Format in JSON ]

Protocol

Connect

  • Description: Agent Client sends the "Connect Info" to RMM Server for on-line notification.
  • Type: Info
  • Direction: Agent -> Server
  • Topic: /cagent/admin/<devID>/agentinfoack
  • QoS: 2
  • Retained: 0
  • Payload:
{
  "susiCommData": {
    	"devID":"0017000E40000001",
    	"hostname":"AAA",
    	"sn":"0017000E40000001",
    	"mac":"0017000E40000001",
    	"version":"3.1.23",
    	"type":"SenHub",
    	"product":"WISE-1020",
    	"manufacture":"",
    	"status":"1",
    	"commCmd":1,
    	"requestID":30002,
    	"agentID":"0017000E40000001",
    	"handlerName":"general",
    	"sendTS":160081026
   }
}

OS Info

  • Description: Agent Client sends the OS Info" to RMM Server for device OS information.
  • Type: Info
  • Direction: Agent -> Server
  • Topic: /cagent/admin/<devID>/agentactionreq
  • QoS: 0
  • Retained: 0
  • Payload:
{
  "susiCommData":{
     "osInfo":
      {
        "cagentVersion":"3.1.23",
        "cagentType":"IoTGW",
        "osVersion":"SnailOS",
        "biosVersion":"",
        "platformName":"",
        "processorName":"SnailGW",
        "osArch":"SnailX86",
        "totalPhysMemKB":123,
        "macs":"000E40ABCDEF",
        "IP":"192.168.0.100"
     },
     "commCmd":116,
     "requestID":109,
     "agentID":"0000000E40ABCDEF",
     "handlerName":"general",
     "sendTS":1466730390
   }
}


Disconnect

  • Description: Agent Client sends the "Disconnect Info" to Server for off-line notification.
  • Type: Info
  • Direction: Agent -> Server
  • Topic: /cagent/admin/<devID>/agentinfoack
  • QoS: 2
  • Retained: 0
  • Payload:
{
  "susiCommData": {
    	"devID":"0017000E40000001",
    	"hostname":"AAA",
    	"sn":"0017000E40000001",
    	"mac":"0017000E40000001",
    	"version":"3.1.23",
    	"type":"SenHub",
    	"product":"WISE-1020",
    	"manufacture":"",
    	"status":"0",
    	"commCmd":1,
    	"requestID":30002,
    	"agentID":"0017000E40000001",
    	"handlerName":"general",
    	"sendTS":160081026
   }
}

Info or Update Device's Capability

  • Description: Agent will send it's capability to Server for description all resource.
  • Type: Auto update
  • Direction: Agent-> Server
  • Topic: /cagent/admin/<devID>/agentactionreq
  • QoS: 0
  • Retained: 0
  • Payload: 

Example: SenHub's Capability 

{
  "susiCommData":{
    "infoSpec": {
        "SenHub": {
            "SenData": {"e":[ {"n":"Temperature","u":"Cel","v":0.000000,"min":-100.000000,"max":200.000000,"asm":"r","type":"d","rt":"ucum.Cel","st":"ipso","exten":""},
                              {"n":"Humidity","u":"%","v":0.000000,"min":0.000000,"max":100.000000,"asm":"r","type":"d","rt":"ucum.%","st":"ipso","exten":""},
                              {"n":"GPIO1","u":"","bv":0,"min":0.000000,"max":1.000000,"asm":"r","type":"b","rt":"","st":"ipso","exten":""},
                              {"n":"GPIO2","u":"","bv":0,"min":0.000000,"max":1.000000,"asm":"r","type":"b","rt":"","st":"ipso","exten":""}
                            ],
            "bn":"SenData"
            },
            "Info": {"e":[{"n":"Name","sv":"SenHub1","asm":"rw"},
                          {"n":"sw","sv":"1.0.00","asm":"r"}
                         ],
            "bn":"Info"
           },
           "Net": {"e":[{"n":"sw","sv":"1.0.00","asm":"r"},
                        {"n":"Neighbor","sv":"","asm":"r"},
                        {"n":"Health","v":"100.000000","asm":"r"}
                       ],
            "bn":"Net"
           }
       }
   },
   "commCmd":2052,
   "requestID":2001,
   "agentID":"0017000E40000001",
   "handlerName":"general",
   "sendTS":160081024
  }
}

Auto Update Sensor Data Value

  • Description: Agent will update latest value to server.
  • Type: Auto update
  • Direction: Agent-> Server
  • Topic: /cagent/admin/<devID>/deviceinfo
  • QoS: 0
  • Retained: 0
  • Payload:
{  
  "susiCommData":{  
     "data":{  
        "SenHub":{  
           "SenData":{  
              "e":[  
                 {  
                    "n":"Temperature",
                    "v":1
                 },
                 {  
                    "n":"Humidity",
                    "v":57
                 },
                 {  
                    "n":"GPIO1",
                    "bv":0
                 },
                 {  
                    "n":"GPIO2",
                    "bv":0
                 }
              ],
              "bn":"SenData"
           },
           "ver":1
        }
     },
     "commCmd":2055,
     "requestID":2001,
     "agentID":"0017000E40000001",
     "handlerName":"general",
     "sendTS":160081031
  }
}

Get Sensor Data

  • Description: Server can send mqtt message to get sensor data value.
  • Type: Request
  • Direction: Server -> Agent
  • Topic: /cagent/admin/<devID>/agentcallbackreq
  • QoS: 0
  • Retained: 0
  • Payload:
{  
  "susiCommData":{  
     "sessionID":"2746E3B65BAB115338B9668CDC5C35C4",
     "sensorIDList":{  
        "e":[  
           {  
              "n":"SenHub/Info/sw"
           }
        ]
     },
     "commCmd":523,
     "requestID":0,
     "agentID":"",
     "handlerName":"SenHub",
     "sendTS":1466057267
  }
}
  • Description: Agent will reply its data value.
  • Type: Reply
  • Direction: Agent -> Server
  • Topic: /cagent/admin/<devID>/agentactionreq
  • QoS: 0
  • Retained: 0
  • Payload:
{  
  "susiCommData":{  
     "commCmd":524,
     "handlerName":"SenHub",
     "sessionID":"2746E3B65BAB115338B9668CDC5C35C4",
     "sensorInfoList":{  
        "e":[  
           {  
              "n":"/Info/sw",
              "sv":"1.0.00",
              "StatusCode":200
           }
        ]
     }
  }
}

Set Sensor Data

  • Description: Server can send mqtt message to set sensor data value.
  • Type: Request
  • Direction: Server -> Agent
  • Topic: /cagent/admin/<devID>/agentcallbackreq
  • QoS: 0
  • Retained: 0
  • Payload:
{  
  "susiCommData":{  
     "sensorIDList":{  
        "e":[  
           {  
              "sv":"SenHub1",
              "n":"SenHub/Info/Name"
           }
        ]
     },
     "sessionID":"4DDF0B6DE2773176095F55E8C930507A",
     "commCmd":525,
     "requestID":0,
     "agentID":"",
     "handlerName":"SenHub",
     "sendTS":1466088605
  }
}
  • Description: Agent will reply its result.
  • Type: Reply
  • Direction: Agent -> Server
  • Topic: /cagent/admin/<devID>/agentactionreq
  • QoS: 0
  • Retained: 0
  • Payload:
{  
  "susiCommData":{  
     "commCmd":526,
     "handlerName":"SenHub",
     "sessionID":"4DDF0B6DE2773176095F55E8C930507A",
     "sensorInfoList":{  
        "e":[  
           {  
              "n":"/Info/Name",
              "sv":"Success",
              "StatusCode":200
           }
        ]
     }
  }
}


EventNotify

  • Description: 
  • Type: Auto update
  • Direction: Agent -> Server
  • Topic: /cagent/admin/<devID>/eventnotify
  • QoS: ?
  • Retained: ?
  • Payload:
{  
   "susiCommData":{  
      "commCmd":2059,
      "requestID":2001,
      "agentID":"000014DAE996BE04",
      "handlerName":"general",
      "sendTS":1453356274,
      "eventnotify":{  
         "subtype":"predictError", #predictError/predictInfo
         "msg":"HDD smart 5 over the threshold",
         "severity":2,
         "handler":"MsgGen",
         "extMsg":{
               "predictMsg":{
               "health":"Sick",
               "suggestion1":"Please back up your HDD data. The HDD has the probability to break down in 30 days.",
               "deviceName":"ST9250315AS"
            },
               "alertMsg":{
                  "warning":"Yes",
                  "suggestion1":"Please lower the environment temperature under 40C.",
                  "suggestion2":"Please make sure the cooling system is working properly.",
                  "deviceName":"ST9250315AS"
               }
            }
      }
   }
}


severity:
     Severity_Emergency = 0,
     Severity_Alert     = 1,
     Severity_Critical  = 2,
     Severity_Error     = 3,
     Severity_Warning   = 4,
     Severity_Informational = 5,
     Severity_Debug     = 6,

subtype: 
    THRESHOLD_CHECK_INFO
    THRESHOLD_CHECK_ERROR
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