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Azure Blob Storage

Type: bindings.azure.blobstorage

Status: stable

Reference: https://docs.dapr.io/reference/components-reference/supported-bindings/blobstorage/

Example​

apiVersion: cra.diagrid.io/v1beta1
kind: Component
metadata:
  name: <name>
spec:
  type: bindings.azure.blobstorage
  version: v1
  metadata:
    # Shared access policy connection string for Blob Storage.
    - name: connectionString
      value: "BlobEndpoint=https://storagesample.blob.core.windows.net;SharedAccessSignature={KeySig}"
    # The name of the container to be used for Dapr state. The container will be created for you if it doesn't exist.
    - name: containerName
      value: "container"
    # Decode the blob in base64. (Optional)
    #- name: decodeBase64
    #  value: "false"
    # Disable entity management. Skips the attempt to create the specified storage container. This is useful when operating with minimal Azure AD permissions. (Optional)
    #- name: disableEntityManagement
    #  value: "false"
    # Optional custom endpoint URL. This is useful when using the Azurite emulator or when using custom domains for Azure Storage (although this is not officially supported). The endpoint must be the full base URL, including the protocol (http:// or https://), the IP or FQDN, and optional port. (Optional)
    #- name: endpoint
    #  value: "http://127.0.0.1:10000"
    # Indicates whether data in the container may be accessed publicly and the level of access. (Optional)
    #- name: publicAccessLevel
    #  value: "none"
    # Specifies the maximum number of HTTP requests that will be made to retry blob operations. A value of zero means that no additional attempts will be made after a failure. (Optional)
    #- name: retryCount
    #  value: "3"

Binding information​

Input Binding: no

Output Binding: yes

Output Binding operations:​

  • create: Create blob

  • get: Get blob

  • delete: Delete blob

  • list: List blob

  • bulkGet: Download multiple blobs in parallel

  • bulkCreate: Upload multiple blobs in parallel

  • bulkDelete: Delete multiple blobs in parallel

  • presign: Generate a presigned SAS URL for a blob. Requires 'blobName' and 'signTTL' metadata. Only supported when the binding is configured with an account key or connection string.

Authentication profiles​

Available authentication profiles:

  • Connection string

  • Account Key

  • Azure AD: Client credentials

  • Azure AD: Client certificate

Connection string​

Authenticate using a connection string.

connectionString​

Required - Shared access policy connection string for Blob Storage. Used for output binding direction.

Example value: BlobEndpoint=https://storagesample.blob.core.windows.net;SharedAccessSignature={KeySig}

Account Key​

Authenticate using a pre-shared "account key".

accountKey​

Required - The key to authenticate to the Storage Account.

Example value: my-secret-key

accountName​

Required - The storage account name

Example value: mystorageaccount

Azure AD: Client credentials​

Authenticate using Azure AD with client credentials, also known as "service principals".

accountName​

Required - The storage account name

Example value: mystorageaccount

azureClientId​

Required - Client ID (application ID)

Example value: c7dd251f-811f-4ba2-a905-acd4d3f8f08b

azureClientSecret​

Required - Client secret (application password)

Example value: Ecy3XG7zVZK3/vl/a2NSB+a1zXLa8RnMum/IgD0E

azureTenantId​

Required - ID of the Azure AD tenant

Example value: cd4b2887-304c-47e1-b4d5-65447fdd542a

azureEnvironment​

Optional name for the Azure environment if using a different Azure cloud

Default value: AzurePublicCloud

Example value: AzurePublicCloud

Allowed values:

  • AzurePublicCloud

  • AzureChinaCloud

  • AzureUSGovernmentCloud

Azure AD: Client certificate​

Authenticate using Azure AD with a client certificate. "azureCertificate" is required.

accountName​

Required - The storage account name

Example value: mystorageaccount

azureClientId​

Required - Client ID (application ID)

Example value: c7dd251f-811f-4ba2-a905-acd4d3f8f08b

azureTenantId​

Required - ID of the Azure AD tenant

Example value: cd4b2887-304c-47e1-b4d5-65447fdd542a

azureCertificate​

Certificate and private key (in either a PEM file containing both the certificate and key, or in PFX/PKCS#12 format)

Example value:

-----BEGIN PRIVATE KEY-----\n MIIEvgI... \n -----END PRIVATE KEY-----
\n -----BEGIN CERTIFICATE----- \n MIICoTC... \n -----END CERTIFICATE----- \n

azureCertificatePassword​

Password for the certificate if encrypted.

Example value: password

azureEnvironment​

Optional name for the Azure environment if using a different Azure cloud

Default value: AzurePublicCloud

Example value: AzurePublicCloud

Allowed values:

  • AzurePublicCloud

  • AzureChinaCloud

  • AzureUSGovernmentCloud

Metadata​

containerName​

Required - The name of the container to be used for Dapr state. The container will be created for you if it doesn't exist.

Example value: container

decodeBase64 (bool)​

Decode the blob in base64.

Default value: false

Example value: true

disableEntityManagement (bool)​

Disable entity management. Skips the attempt to create the specified storage container. This is useful when operating with minimal Azure AD permissions.

Default value: false

Example value: true

endpoint (string)​

Optional custom endpoint URL. This is useful when using the Azurite emulator or when using custom domains for Azure Storage (although this is not officially supported). The endpoint must be the full base URL, including the protocol (http:// or https://), the IP or FQDN, and optional port.

Example value: http://127.0.0.1:10000

publicAccessLevel​

Indicates whether data in the container may be accessed publicly and the level of access.

Default value: none

Example value: none

Allowed values:

  • none

  • blob

  • container

retryCount (number)​

Specifies the maximum number of HTTP requests that will be made to retry blob operations. A value of zero means that no additional attempts will be made after a failure.

Default value: 3

Example value: 3

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