Heart Rate demo app

The Heart Rate app provided on the Darcy Cloud platform simulates a wearable device transmitting a person’s heartbeat at the edge. The Wearable sends heart rate data over bluetooth to a data collector microservice located on the primary node . The Data collector microservice then communicates with another microservice running a web server on the secondary node to display the heart rate data on a graph.

Requirements #

• A Darcy Cloud Account
• Any edge node (or a virtual node)

Although this application works best with two nodes, you can deploy it with only one node and run all microservices on the same device. The YAML will automatically detect if you have one or two nodes.

Deploy using Darcy Cloud Portal #

Deploying the Heart Rate Application from the Darcy Cloud platform is extremely simple. Make sure you have added at least 1 node to your Darcy Cloud project , then follow the steps below:

1. Go to your Darcy Cloud project page
2. Select Apps
3. Click on + DEPLOY APP
4. Click on DARCY HEART RATE DEMO
5. Select the node(s) where you want it to run
6. Click DEPLOY

See Application Results #

When your app is deployed successfully you will see an Application Deployed message in the top right of your screen.

If you are not already seeing the app listed, click the APPS tab to see all of the apps in your current project. Click the app to access the app detail view.

From the app detail view, click the linked text under the ports column to navigate to the app output.

You should be brought to the Heart Rate Demo App.

App YAML #

kind: Application
apiVersion: iofog.org/v3
metadata:
  name: darcy-heart-rate-demo
spec:
  microservices:
    - name: data-generator
      agent:
        name: '{% raw %}{% assign agent = "" | findAgent | first %}{{ agent.name }}'
      images:
        arm: 'darcyai/heart-rate-demo-generator:1.0.0'
        x86: 'darcyai/heart-rate-demo-generator:1.0.0'
      container:
        rootHostAccess: false
        ports: []
      config:
        test_mode: true
        data_label: Anonymous Person
    - name: viewer
      agent:
        name: virtual-node-alexpc
      images:
        arm: 'darcyai/heart-rate-demo-viewer:1.0.0'
        x86: 'darcyai/heart-rate-demo-viewer:1.0.0'
      container:
        rootHostAccess: false
        ports:
          - external: 5005
            internal: 80
            proxy: true
        volumes: []
        env:
          - key: BASE_URL
            value: 'http://localhost:8080/data'
  routes:
    - from: '{{self.microservices[0].name}}'
      to: '{{self.microservices[1].name}}'
      name: monitor-to-viewer