This is a Node app in TypeScript that takes environmental data through HTTP POST and sends it to Azure IoT Hub. I also stores the latest (not aggregated) data on the local file system, this can easily be disabled.
It's build for a project where it runs on a RaspberryPi and recieves the data from another local service, so there is no authentication going on here.
This code is part of a project described here: http://henrik.sommerfeld.nu/my-iot-exploration-part-3-sending-data-to-cloud/
For installing this on the Raspberry Pi you can first (optionally) build it on another machine using the following procedure.
- The usual npm install installs what's needed for running the app.
npm install
- To build it, run gulp build-production. This creates a dist folder that can be copied to the target system
gulp build-production
- Copy dist folder to target system.
- Navigate to the dist folder and run npm install --production
npm install --production
- To connect to Azure IoT Hub you need the connection string and a description for your device. This is kept in a configuration file that is not created automatically, since we don't want to overwritten when updating the app. Create a folder next to the dist folder called config. In that folder, create a file named azure.json with the following properties.
{
"AzureConnectionString": "What ever your connection string is",
"DeviceDescription": "What ever you want to call your device"
}-
See all available gulp tasks.
gulp help -
Compile the TypeScript files
gulp typescript-compile -
Run jasmine tests using karma.
gulp tests-run -
Run jasmine tests using karma with a watch.
gulp tests-watch -
Serve jasmine tests in the browser.
gulp tests-serve