Azure Function Timer Covid-19 News Sentiment

⏲ Fetch coronavirus news sentiment on a regular schedule via Azure Functions.

Requirements

Microsoft Azure Account
VS Code for Production Deployment and Local Development
Azure Functions VS Code Extension for Local Development
Node.js LTS Version

Installation

Create a .env file and include the following values:

AZURE_TENANT_ID=XXX
AZURE_CLIENT_ID=XXX
AZURE_CLIENT_SECRET=XXX
AZURE_STORAGE_CONTAINER=XXX
BLOB_SERVICE_ACCOUNT_NAME=XXX
INCREMENT=XX
JOB_DATA_FILENAME=XXX.json
THROTTLE_LIMIT=X
THROTTLE_INTERVAL=XXX

INCREMENT is the number added to the start of the messages to fetch.

JOB_DATA_FILENAME is the meta data file containing the first and last message ID's from the last job.

THROTTLE_LIMIT is the number of concurrent requests processed when fetching data and requesting data from Azure Cognitive Services.

THROTTLE_INTERVAL is the number of milliseconds between each batched request for data.

Next, Create a local.settings.json file as well for running the Azure Function locally in VS Code.

If you don't know where to obtain the other values in Azure, look at the AZURE.md document.

{
  "IsEncrypted": false,
  "Values": {
		"AzureWebJobsStorage": "CREATED-BY-AZURE-FUNCTION-IN-VS-CODE"
		"FUNCTIONS_WORKER_RUNTIME": "node",
		"AZURE_TENANT_ID": "XXX",
		"AZURE_CLIENT_ID": "XXX",
		"AZURE_CLIENT_SECRET": "XXX",
		"AZURE_STORAGE_CONTAINER": "XXX"
		"BLOB_SERVICE_ACCOUNT_NAME": "XXX",
		"INCREMENT": "10",
		"JOB_DATA_FILENAME": "XXXX.json",
		"THROTTLE_LIMIT": X,
		"THROTTLE_INTERVAL": XXXX
  }
}

Deployment

In VS Code, deploy this function from the root of this directory.
Verify in the Portal

Tests

npm i -D
npm test

License

MIT

joemccann / azure-function-timer-covid-19-news-sentiment