Difference between revisions of "HelloWorld plugin"

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(→‎Configure amtechM2MBridge template)
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=== Create thing type HelloWorld ===
 
=== Create thing type HelloWorld ===
−
*add supported property type string hwgreetingLabel (See [[Activities#Thing types|Thing types]])  
+
*Add supported property type string hwgreetingLabel (See [[Activities#Thing types|Thing types]])  
−
**string without space validation regexp ^[^\s]+$
+
**String without space validation regexp ^[^\s]+$
−
*add supported property type integer hwSayHelloFrequency
+
*Add supported property type integer hwSayHelloFrequency
  
 
=== Create observation type obsrvHelloWorld ===
 
=== Create observation type obsrvHelloWorld ===
−
*add supported property type string hwgreetingLabel (See [[Sensor's network#Observations and observation types|Observations and observation types]])
+
*Add supported property type string hwgreetingLabel (See [[Sensor's network#Observations and observation types|Observations and observation types]])
−
*clone obsrvHelloWorld with name commandHelloWorld
+
*Clone obsrvHelloWorld with name commandHelloWorld
  
 
=== Define observation types produce or consume by HelloWorld ===
 
=== Define observation types produce or consume by HelloWorld ===
−
*add obsrvHelloWorldobservation to Observation Production configuration list (See [[Activities#Thing types|Thing types]])
+
*Add obsrvHelloWorldobservation to Observation Production configuration list (See [[Activities#Thing types|Thing types]])
−
*add commandHelloWorldobservation to Observation Production configuration list
+
*Add commandHelloWorldobservation to Observation Production configuration list
−
*add observationresourcecrud to Observation Production configuration list
+
*Add observationresourcecrud to Observation Production configuration list
−
**enables listen per configuration changes
+
**Enables listen per configuration changes
  
 
=== Implement plugin HelloWorld interface ===
 
=== Implement plugin HelloWorld interface ===
−
*create a directory with the name HelloWorld at (See [https://github.com/AMTechMX/M2MBridge/tree/master/plugins plugin directory] )
+
*Create a directory with the name HelloWorld at (See [https://github.com/AMTechMX/M2MBridge/tree/master/plugins plugin directory] )
−
*at the directory HelloWorld create a javascript file HelloWorld.js
+
*At the directory HelloWorld create a javascript file HelloWorld.js
−
*implement the interface (See [[How to implement a new plugin|How to implement a new plugin]])
+
*Implement the interface (See [[How to implement a new plugin|How to implement a new plugin]])
 
<syntaxhighlight lang="javascript">
 
<syntaxhighlight lang="javascript">
 
     function HelloWorld() {
 
     function HelloWorld() {
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=== What helloWorld does ===
 
=== What helloWorld does ===
−
*send an observation obsrvHelloWorldobservation with the frequency set by the property hwSayHelloFrequency
+
*Send an observation obsrvHelloWorldobservation with the frequency set by the property hwSayHelloFrequency
−
*change hwgreetingLabel value when receive command obsrvHelloWorld observation
+
*Change hwgreetingLabel value when receive command obsrvHelloWorld observation
−
*implement placeholder #{greetingLabel}
+
*Implement placeholder #{greetingLabel}
−
*start method
+
*Start method
−
**create an observation type obsrvHelloWorld at /amtech/things/observations (See [[Simulator|Simulator]])  
+
**Create an observation type obsrvHelloWorld at /amtech/things/observations (See [[Simulator|Simulator]])  
−
**tip copy observation instance jsonld using jsonld Viewer (See [[Tree editor|Json Viewer]])
+
**Tip copy observation instance jsonld using jsonld Viewer (See [[Tree editor|Json Viewer]])
 
<syntaxhighlight lang="javascript">
 
<syntaxhighlight lang="javascript">
 
     var clone = require('clone');
 
     var clone = require('clone');
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=== Configure amtechM2MBridge template ===
 
=== Configure amtechM2MBridge template ===
 
*(See [[M2M Bridge#Cloud Configuration|Cloud Configuration]])
 
*(See [[M2M Bridge#Cloud Configuration|Cloud Configuration]])
−
*create [[Activities|activity]] helloWorld  
+
*Create [[Activities|activity]] helloWorld  
−
*create helloWord [[Notifications|notification]]
+
*Create helloWord [[Notifications|notification]]
−
**add subject with [[Sensor%27s_network#Placeholders_substitution|placeholder]] #{label}
+
**Add subject with [[Sensor%27s_network#Placeholders_substitution|placeholder]] #{label}
−
**add subject with [[Sensor%27s_network#Placeholders_substitution|placeholder]] #{producer} and #{label}
+
**Add subject with [[Sensor%27s_network#Placeholders_substitution|placeholder]] #{producer} and #{label}
−
*create helloWorld actor with access [[Access_control#Policies|polices]] (See [[Access control#Actors|Actors]])
+
*Create helloWorld actor with access [[Access_control#Policies|polices]] (See [[Access control#Actors|Actors]])
−
**amtechM2MBridge thing type
+
**AmtechM2MBridge thing type
 
**HelloWord thing type
 
**HelloWord thing type
 
**helloWord notification
 
**helloWord notification
−
**associate [[Activities#Actors|helloWorld actor]] with helloWorld activity
+
**Associate [[Activities#Actors|helloWorld actor]] with helloWorld activity
−
*configure [[Observation_production_config|observation production]]
+
*Configure [[Observation_production_config|observation production]]
−
** thing type HelloWorld
+
** Thing type HelloWorld
−
***observation type obsrvHelloWorld
+
***Observation type obsrvHelloWorld
−
****topic /helloWorld/#{greetingLabel}
+
****Topic /helloWorld/#{greetingLabel}
−
****producer #{thingId}
+
****Producer #{thingId}
 
****guestTeants add m2mcreator to shared the observation
 
****guestTeants add m2mcreator to shared the observation
 
***observation type observationresourcecrud
 
***observation type observationresourcecrud

Revision as of 00:23, 12 October 2016

HelloWorld plugin flow

  • Create HelloWorld thing type
  • Create observation(s) type
  • Implement plugin node.js interface
  • Configuration to test plugin

Create thing type HelloWorld

  • Add supported property type string hwgreetingLabel (See Thing types)
    • String without space validation regexp ^[^\s]+$
  • Add supported property type integer hwSayHelloFrequency

Create observation type obsrvHelloWorld

Define observation types produce or consume by HelloWorld

  • Add obsrvHelloWorldobservation to Observation Production configuration list (See Thing types)
  • Add commandHelloWorldobservation to Observation Production configuration list
  • Add observationresourcecrud to Observation Production configuration list
    • Enables listen per configuration changes

Implement plugin HelloWorld interface

    function HelloWorld() {
    }

    HelloWorld.prototype.start = function (complete) {
        try {
            complete(null);
        } catch (e) {
            complete(e);
        }
    };

    HelloWorld.prototype.stop = function (complete) {
        try {
            complete(null);
        } catch (e) {
            complete(e);
        }
    };

    HelloWorld.prototype.command = function (observation, complete) {
        try {
            complete(null);
        } catch (e) {
            complete(e);
        }
    };

    module.exports.HelloWorld = HelloWorld;

What helloWorld does

  • Send an observation obsrvHelloWorldobservation with the frequency set by the property hwSayHelloFrequency
  • Change hwgreetingLabel value when receive command obsrvHelloWorld observation
  • Implement placeholder #{greetingLabel}
  • Start method
    • Create an observation type obsrvHelloWorld at /amtech/things/observations (See Simulator)
    • Tip copy observation instance jsonld using jsonld Viewer (See Json Viewer)
    var clone = require('clone');
    var util = require('util');

    function HelloWorld() {
    }

    HelloWorld.prototype.start = function (complete) {
        var self = this;
        try {        
            self.sayHelloInterval = setInterval(function(){
                var obsrvHelloWorld = clone({
                    "proximityarea": "",
                    "topic": "",
                    "guestusers": [],
                    "targetthings": "[]",
                    "location": "",
                    "@type": "/amtech/linkeddata/types/composite/observation/obsrvHelloWorld",
                    "hwgreetingLabel": "",
                    "creationDate": "2016-04-20T03:24:54.099Z",
                    "guesttenants": [],
                    "description": "",
                    "producer": ""
                });
                obsrvHelloWorld.hwgreetingLabel = self.hwgreetingLabel;
                var ph = {'greetingLabel': self.hwgreetingLabel};
                self.sendObservation(self,obsrvHelloWorld, ph );            
            }, self.hwSayHelloFrequency);
            complete(null);
        } catch (e) {
            complete(e);
        }
    };

    HelloWorld.prototype.stop = function (complete) {
        try {
            if (this.sayHelloInterval) {
                clearInterval(this.sayHelloInterval);
            }
            complete(null);
        } catch (e) {
            complete(e);
        }
    };

    HelloWorld.prototype.command = function (observation, complete) {
        try {
            if(observation['@type'] === "/amtech/linkeddata/types/composite/observation/commandHelloWorld"){
                this.hwgreetingLabel = observation.hwgreetingLabel;
                complete(null);
            }else{
                complete(new Error(util.format("HelloWorld %s support commands of observations type commandHelloWorld", this._name)));
            }
        } catch (e) {
            complete(e);
        }
    };

    module.exports.HelloWorld = HelloWorld;

Configure amtechM2MBridge template

  • (See Cloud Configuration)
  • Create activity helloWorld
  • Create helloWord notification
  • Create helloWorld actor with access polices (See Actors)
    • AmtechM2MBridge thing type
    • HelloWord thing type
    • helloWord notification
    • Associate helloWorld actor with helloWorld activity
  • Configure observation production
    • Thing type HelloWorld
      • Observation type obsrvHelloWorld
        • Topic /helloWorld/#{greetingLabel}
        • Producer #{thingId}
        • guestTeants add m2mcreator to shared the observation
      • observation type observationresourcecrud
        • topic /helloWorld/asynch
        • producer #{thingId}
    • thing type amtechM2mBridge
      • observation type observationresourcecrud
        • topic /helloWorld/asynch
        • producer #{thingId}
  • publishing activity (See Publishing)
    • validate activity
  • invite a user as helloWorld actor (See Invite user)
  • configure helloWorld m2mBridge template
    • create amtechM2MBridge instance with name helloWorld (See Instances)
    • create HelloWorld type instace with name helloWorld
    • associate HelloWorld instance to amtechM2MBridge instance propety bridgeInstances
    • give guest access to helloWorld M2MBridge instance to tenant m2mfollower and user smartsensor@amtech.mx (if check user id set in policies)

bridgeConfig.json

    {
        "description": "AMTech M2M Bridge Helloworld demo",
        "description:children" : true,
        "dap":{
            "dapUrl": "https://dapdev.amtech.mx",
            "userId": "smartsensor@amtech.mx",
            "tenant" : "m2mfollower",
            "password" :"xxxxxxxx"
        }, 
        "templateId":"helloWorld",
        "bridgeIdPrefix":"helloWorldDemo",
        "location:children" : true,
        "address" :{
            "country" : "USA",
            "city": "New York City",
            "road" : "97th street transverse"
        }     
    }

Debug a plugin

Retrieved from "http://wiki.amtech.mx/mediawiki/index.php?title=HelloWorld_plugin&oldid=2583"