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Pixel Server

This site is intended as a backing server to serve pixels being loaded on a web page. Note that the limit of data retrieved here is merely:

a pixel with query string x was requested

No PII data is recorded.

Prerequisites

  • This project was built, tested, and peformance checked using .NET Core 2.1.
  • It is intended (and has been tested) for deployment to an Azure AppService
  • The backing data store is Application Insights, so you will need to create one prior to deployment.

Usage

To add a tracking pixel, simply embed an image of the following form.

Markdown:
![AltText](https://<yourappservicename>.azurewebsites.net/api/impressions/<URI-path> "AltText")

RST:
.. image::  https://<yourappservicename>.azurewebsites.net/api/impressions/<URI-path>

Img URL:
<img src="https://<yourappservicename>.azurewebsites.net/api/impressions/<URI-path>">

Deployment and Setup

This site is currently configured to leverage Application Insights as a connected service. With the code that is currently checked in, the order to deploy your own version of this site is as follows:

  • Deploy site in release configuration to your AppService
  • Enable Application Insights on your AppService

Enabling Application Insights on your AppService

First, install the Azure CLI. Use the az login command to sign in with the appropriate email to access your azure subscriptions. After that, ensure you've created an Application Insights where it is visible to your target AppService.

Then, leverage the following az commands:

#retrieve the InstrumentationKey for your previously created appinsights 
$key = az resource show -g <resource group name> -n <appinsight name> --resource-type "Microsoft.Insights/components" --query properties.InstrumentationKey

#set the application insight for web app
az webapp config appsettings set -g <resource group name> -n <web app name> --settings "APPINSIGHTS_INSTRUMENTATIONKEY = $key"

Or, if you the above is too much trouble. Go through the UI.

Where To Click

Querying App Insight's logs

The customEvents table can be filtered by name PixelImpression. The table will contain a column visitor_path for the URI-PATH that's passed in with the request.

Example query:

customEvents
| project name, operation_Name, timestamp, customDimensions.visitor_path
| where name == "PixelImpression" and timestamp >= ago(90d)
| sort by timestamp