connecthing-api

connecthing-api offers two module. objectstore to create, read, update and delete with the connecthing objectstore and request for making Rest calls between microservices

objectstore

The objectstore object allows you to perform CRUD operations on the connecthing objectstore. With each call a javascript promise will be returned.

This module shares the same function api across node microservices and javascript widget.

The support operations are:

• read: get a collection or document from a collection ( address )
• add: insert a new document into a collection ( address , js_object ),
• replace: replace a document in a collection ( address , js_object ),
• remove: remove a document in a collection ( address ),
• drop: delete a collection( address )

The address can be a String or objectStore_Object(as return from an objectstore promise) The js_object should be a javacript object

Examples

microservices - setup for exampels

// get objectstore helper
const { objectstore } = require("connecthing-api")
// some data to save
const myMobileSensor = { device:123, name:"mobile sensor" }

widget - setup for exampels

<script src="https://cdn.jsdelivr.net/npm/@connecthing.io/connecthing-api@latest/objectstore.min.js"></script>
<script>
  const myMobileSensor = { device:123, name:"mobile sensor" }
</script>

Using objectstore:

add an object to the store

objectstore.add("sensors",myMobileSensor)
.then( objectStore_MyMobileSensor => {
  console.log("your sensor has been added to the objectstore")
})

get all values from a collection

objectstore.read("sensors")
.then( objectStore_Sensors => {
  console.log("You have " objectStore_Sensors.length " sensors in the objectstore")
})

get a value from a collection

// if you know the objectstore id

objectstore.read("sensors/5a6f0d713174acbdfd07eabe")
.then( objectStore_Sensor => {
  console.log("Your sensor:"+JSON.stringify(objectStore_Sensor))
})

to update the value in a collection

objectstore.read("sensors/5a6f0d713174acbdfd07eabe")
.then( objectStore_Sensor => {
  objectStore_Sensor.owner = "John"
  return objectStore_Sensor.update()
})
.then(objectStore_Sensor=>{
  console.log("sensor updated")
})

to remove value in a collection

objectstore.read("sensors")
.then( objectStore_Sensors => {
  // find your device
  const johnsSensor = objectStore_Sensor.find(sensor => sensor.owner = "John")

  // remove your device
  return objectstore.remove(johnsSensor)
})
.then(()=>{
  console.log("sensor remove")
})

to remove a collection

objectstore.drop("sensors")
.then(()=>{
  console.log("sensors deleted!")
})

request

The "request" module is for making Rest calls between microservices.

const { request } = require("connecthing-api")

request({
	url: "/api/v1/devices"
}, function(err, resp, body){
	if(err){
		throw new Error("Error making request to connecthing api: " + err.stack);
	}

	console.log("Call to devices api: " + resp.statusCode);
	console.dir(body);
});