lp-code/aztwittersar

A bot that receives Tweets, scores them, and can notify a Slack channel.

AzTwitterSAR -- tweet analysis and notification

This is an Azure Function that polls Twitter's API to obtain new tweets from a given account. Then it scores the new tweetby the presence of specific words. If this indicates that the tweet may be of interest, then a machine learning-based filter function (see the sibling project TwitterSARai) is called. If that, too, indicates relevance, then the tweet is posted to a slack channel through a webhook.

Prerequisites

• An Azure account and decent knowledge of deploying and running a serverless solution. ARM templates are included, i.e. the Azure infrastructure can be set up mostly automatically.
• Twitter API key + secret.
• The environment variable AZTWITTERSAR_SLACKHOOK must be set with a link to a web hook that should be used to post the notification. For local testing the definition must be in local.settings.json, on Azure it must be added in the deployment template parameters so that it can be written to the key vault.

Workflow when redeploying the code

• Send a POST request to the terminatePostUri (obtained when starting the workflow).
• Send a POST request to the purgeHistoryDeleteUri.
• Stop the Azure function.
• Optionally: download the tweets from the storage account (can be done at any time).
• Optionally: delete or expunge the tables in the storage account.
• Run infrastructure and/or code deployment.
• Start the Azure function.
• Start the workflow by triggering the starter function from the Azure portal with the id of the last treated tweet as argument. Save the response with the durable function management webhooks.

aztwittersar's Issues

Catch and handle exception when Tweetinvi is not authorized properly

Read parameters from keyvault

Keep dev solution as fallback. Injection?

Multiple notification targets

• For all messages or per omr.
• Event grid?
• How to configure multiple targets? (Idea: create naming scheme for webhooks in the keyvault; in code: list all secrets, get those according to the naming scheme; send to all; but this should still go into some code/function/infra of its own!)

Improve documentation in readme

Architecture

• code
• cloud services

Check vs AI component

Add build badge from Azure DevOps

Evaluate/treat tweet replies together with previous tweet(s)

Reduce Application Insights data volume

See https://medium.com/@beyerleinf/azure-application-insights-how-not-to-burn-money-using-it-5f1bbe5816b4
Try first/only solution 1.
Check volume of the different logging levels in the current configuration.

Geo-filtering

Automatic trigger of starter function after deployment

Variable frequency

Check out MS Durable Func example

https://docs.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-monitor?tabs=csharp

"Fjell" kommune: feil trigger

"#Fjell, Sotra, 0918: UP stanset kjøretøy hvor bilfører (mann 36) ikke innehar førerkort+ mistanke ruspåvirkning. Bilfører blir tatt med til legevakt for blodprøve."