Azure Blob Storage Connector

Azure Blob Storage is a cloud solution for storing unstructured data, like large binary or text files. It's often used to store blob data for web applications that don't store nicely in a relational database.

This component allows you to list, create and delete Azure containers, and create and modify blobs (files) within those Azure containers.

Connections

Connection String

Authenticates requests to Azure Blob Storage with a connection string.

Azure Blob Storage supports authentication using a Shared Access Signature (SAS) connection string. This method grants limited access to Azure Storage resources with fine-grained control over permissions and expiration.

A connection string containing a SAS token provides temporary, restricted access and is useful when full account key access is not required.

Prerequisites

• An active Azure account
• An existing Azure Storage Account
• Understanding of required permissions for the integration's operations

Setup Steps

To generate a SAS connection string:

1. Sign in to the Azure Portal
2. Navigate to Storage accounts from the main menu
3. Select the storage account to connect to
4. In the left sidebar, under Security + networking, select Shared access signature
5. Configure the SAS token settings:
   • Allowed services: Select Blob (at minimum)
   • Allowed resource types: Select the appropriate types (Container, Object, etc.)
   • Allowed permissions: Select the minimum required permissions for the integration
   • Start and expiry date/time: Set an appropriate expiration date
6. Click Generate SAS and connection string at the bottom
7. Copy the Connection string value (not the SAS token alone)

Token Expiration

The SAS token has an expiration date. Note the expiration date and plan to refresh the connection string before it expires to avoid authentication failures.

Connection String Format

The connection string will have the format:

BlobEndpoint=https://account.blob.core.windows.net/;SharedAccessSignature=sv=...

Configure the Connection

• Enter the complete Connection string value into the connection configuration

For more information about SAS tokens, permissions, and security considerations, refer to the Azure SAS documentation.

Input	Comments	Default
Connection String	The Azure Storage connection string. Find this in Azure Portal under Storage accounts > Security + networking > Access keys > Connection string. Supports account key or SAS token authentication. Learn more

Storage Shared Key

Authenticates requests to Azure Blob Storage with a Storage Shared Key of an account name and key.

Azure Blob Storage can use Shared Key authentication to authenticate requests. This authentication method uses a storage account name and account key pair.

For more information about storage account authentication, refer to the Azure Storage security guide.

Prerequisites

• An active Azure account
• An existing Azure Storage Account or permissions to create one
• Appropriate permissions to view and manage storage account access keys

Setup Steps

To obtain the storage account credentials:

1. Sign in to the Azure Portal
2. Navigate to Storage accounts from the main menu
3. Select the storage account to connect to
4. In the left sidebar, under Security + networking, select Access keys
5. Two keys are displayed: key1 and key2. Either key can be used for authentication
6. Copy the Storage account name (shown at the top of the page)
7. Click Show next to either key and copy the Key value

Key Rotation

Azure provides two access keys to allow for key rotation without downtime. When rotating keys, update the connection configuration with the new key value.

Configure the Connection

• Enter the Storage account name into the Account Name field
• Enter the copied Key value into the Account Key field

For additional information about managing storage account keys and security best practices, refer to the Azure documentation.

Input	Comments	Default
Account Name	The Azure Storage account name (3-24 characters, lowercase letters and numbers only). Find this in your Azure Portal under Storage accounts. Learn more
Account Key	The 512-bit storage account access key (Base64-encoded). Find this in Azure Portal under Storage accounts > Security + networking > Access keys. Learn more

Actions

Append to Append Blob

Append blocks to an existing append blob

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
File Contents	The contents to write to a blob. Accepts text strings or binary data (images, PDFs, etc.) from previous steps.
Connection	The Azure Blob Storage connection to use.

Create Append Blob

Create an empty append blob object (use "Append to Append Blob" to add blocks)

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
Connection	The Azure Blob Storage connection to use.

Create Container

Create a container

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Connection	The Azure Blob Storage connection to use.

Create Page Blob

Create a page blob with a specific size (must be a multiple of 512 bytes)

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
Page Blob Size	The size to reserve for the page blob in bytes. Must be a multiple of 512 (e.g., 1024, 1536, 2048, 4096). Maximum size is 8 TiB (8,796,093,022,208 bytes).
Connection	The Azure Blob Storage connection to use.

Delete Blob

Delete a blob

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
Connection	The Azure Blob Storage connection to use.

Delete Container

Delete a container

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Connection	The Azure Blob Storage connection to use.

Download Blob

Download a blob

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
Connection	The Azure Blob Storage connection to use.

Generate Shared Access Signature URL

Generate a pre-signed URL (Shared Access Signature or SAS) for a blob

Input	Comments	Default
Connection	The Azure Blob Storage connection to use.
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	A blob is a file that is saved in a 'container'. This represents the file's name.
SAS Starts On	The start date and time when the Shared Access Signature becomes valid. Must be in ISO 8601 format (YYYY-MM-DDTHH:MM:SSZ).
SAS Permissions	The permission string for the SAS token. Combine permissions in this order: 'racwdxltmeop'. Common examples: 'r' (read), 'rw' (read/write), 'racwd' (read, add, create, write, delete). Learn more
SAS Expires On	The expiration date and time when the Shared Access Signature becomes invalid. Must be in ISO 8601 format (YYYY-MM-DDTHH:MM:SSZ).

List Blobs

Get a list of blobs in a container

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Prefix	Filter blobs by prefix string. Use this to list blobs within a specific virtual directory. Include a trailing slash for directory-style filtering (e.g., 'documents/'). Leave blank to list all blobs.
Connection	The Azure Blob Storage connection to use.

List Containers

Get a list of containers available in the account

Input	Comments	Default
Connection	The Azure Blob Storage connection to use.

Resize Page Blob

Resize an existing page blob (must be a multiple of 512 bytes)

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
Page Blob Size	The size to reserve for the page blob in bytes. Must be a multiple of 512 (e.g., 1024, 1536, 2048, 4096). Maximum size is 8 TiB (8,796,093,022,208 bytes).
Connection	The Azure Blob Storage connection to use.

Upload Block Blob

Upload file data to a block blob object

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
File Contents	The contents to write to a blob. Accepts text strings or binary data (images, PDFs, etc.) from previous steps.
Connection	The Azure Blob Storage connection to use.

Upload to Page Blob

Upload to an existing page blob (both data size and offset must be a multiple of 512)

Input	Comments	Default
Container Name	The Azure Blob Storage container name (3-63 characters, lowercase letters, numbers, and hyphens only). Containers organize blob storage similar to directories. Learn more
Blob Name	The blob name (file path) within the container. Do not include a leading slash. Use forward slashes for virtual directory structures.
Page Blob Offset	The starting byte position for writing to the page blob. Must be a multiple of 512 (e.g., 0, 512, 1024, 2048).
File Contents	The contents to write to a blob. Accepts text strings or binary data (images, PDFs, etc.) from previous steps.
Connection	The Azure Blob Storage connection to use.