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Azure Image Service

An image service designed for the Azure cloud platform. Its main purpose is to upload images to Azure storage and create resized variations. It's a function app with the following components:

  • A function to upload an image to an Azure storage blob container.
  • A function that gets triggered when an image is uploaded and puts messages in an Azure storage queue, in order to create resized variations of the image.
  • A function that gets trigger when a message arrives to the Azure storage queue and creates a resized variation of an image.

Application Settings

The function app requires the following application settings:

  • AzureWebJobsStorage: The connection string to the Azure storage account.
  • MainImageContainer: The name of the blob container that stores the images.
  • QueueName: The name of the queue that holds messages to create image variations.
  • BaseImageUrl: The base URL prefix of the images.
  • Sizes: The resize variations, in a comma-separated format (e.g. "256,128,64").
  • MaxFileSize: The maximum allowed file size (in bytes).

How to run locally

  1. Set the application settings in the src/ImageService.FunctionApp/local.settings.json file.
  2. Navigate to the src/ImageService.FunctionApp directory and run the func start command. However, you need to install the Azure function core tools first. Alternatively, you can run it with docker:
    • docker build -t imageservice .
    • docker run -it --rm -p 7071:7071 imageservice

License

This project is licensed under the MIT License - see the LICENSE file for details.