Allow "startup commands"

Which service(blob, file, queue, table) does this issue concern?

Blob.

Which version of the Azurite was used?

3.19.0

Where do you get Azurite? (npm, DockerHub, NuGet, Visual Studio Code Extension)

DockerHub

What’s the Node.js version?

In Docker image.

What problem was encountered?

When trying to set up Azurite for my app’s functional tests (app uses Azure blob storage), I need to have a few containers created in the storage. The real containers are typically created with Terraform on deployment, the app itself doesn’t create the containers.

It would make sense to be able to do a similar thing with Azurite: being able to have a basic “startup commands” feature where the user can list some pre-requisites and Azurite itself creates them.

Steps to reproduce the issue?

Run Azurite container and use the container thumbnails. The container doesn’t exists and I can’t make Azurite create it when starting up.

Have you found a mitigation/solution?

Two ways:

1. the app can use its SDK and connection string to create the required containers, but since it otherwise expects them to be pre-existing, this feature would be built for tests only, messing up the application codebase with unrelated infrastructure code
2. use an additional sideloaded container with a standalone SDK client (or az CLI tool) to run the commands, this is tricky to coordinate and quite convoluted overall, but seems like the direction which I’ll probably take

[dkarlovi]

Full example how to create storage containers with approach 2:

services:
    app:
        image: my/app:version
        depends_on:
            storage_init:
                condition: service_completed_successfully
    # Azure Blob Storage stuff here
    storage:
        image: mcr.microsoft.com/azure-storage/azurite:3.19.0
        # required, see https://github.com/Azure/Azurite/issues/1666
        healthcheck:
            test: nc 127.0.0.1 10000 -z
            interval: 1s
            retries: 30
    storage_init:
        image: mcr.microsoft.com/azure-cli:latest
        command:
            - /bin/sh
            - -c
            - |
                az storage container create --name version
        depends_on:
            storage:
                condition: service_healthy
        environment:
            # https://github.com/Azure/Azurite/blob/main/README.md#usage-with-azure-storage-sdks-or-tools
            AZURE_STORAGE_CONNECTION_STRING: DefaultEndpointsProtocol=http;AccountName=devstoreaccount1;AccountKey=Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==;BlobEndpoint=http://storage:10000/devstoreaccount1;

[blueww]

@dkarlovi Thanks for the suggestion!

We will keep the issue open to track this request.

Azurite welcome contribution. It would be great if you have a good idea to implement this, and raise a PR to add this to Azurite.