Storage Blobs Quickstart

The following sample includes the following features:

• Uses async/await: The Azure Storage SDK API is still callback-based, but the approach in this sample modernizes the syntax. API calls are wrapped in Promises and are executed in the context of an async/await operation.

• Command-based interaction: By passing a command to the --command parameter, you are able to explicitly tell the script which operation to execute (ex: upload, download, list, etc.)

• Uses environment variables: This sample accesses the connection string from an environment variable. The use of environment variables is representative of how you would access sensitive information in production.

To run this sample, you need an Azure account, a blob storage account, and the associated blob storage connection string.

Set up

First, clone the repository on your machine:

git clone https://github.com/Azure-Samples/storage-blobs-node-quickstart.git

Then, switch to the appropriate folder:

cd storage-blobs-node-quickstart

Next, install the dependencies:

npm install

Now, add your blob storage connection string as an environment variable named AZURE_STORAGE_CONNECTION_STRING to a file named .env.

Note: This repository includes a file named .env.example. You can rename this file by removing .example and adding the correct value for your connection string in the .env file.

Running the sample

Once the setup steps are complete, you can interact with the sample by passing a known command into the --command parameter.

For instance if you want to create a container in blob storage, then run the following command:

node index.js --command createContainer

Commands available include:

Command	Description
createContainer	Creates a container named test (succeeds even if container already exists)
upload	Uploads the example.txt file
download	Downloads the contents of the example blob to example.txt
delete	Deletes the example blob
list	Lists the contents of the test container to the console

Resources

You can use the Azure Storage explorer to see the data in your Azure account.