tAzureStorageList - 6.1

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This component will be available in the Palette of Talend Studio on the condition that you have subscribed to one of the Talend solutions with Big Data.

tAzureStorageList properties

Component Family

Cloud / Azure Storage



tAzureStorageList connects to a given Azure storage account and lists blobs stored in a given container of that account.


tAzureStorageList allows you to select and list specific blobs using blob filters.

Basic settings

Use an existing connection

Select this check box and in the Component List click the relevant connection component to reuse the connection details you already defined.


Account name

Enter the name of the storage account you need to access. A storage account name can be found in the Manage Access Keys dashboard of the Microsoft Azure Storage system to be used.


Account key

Enter the key associated with the storage account you need to access. Two keys are available for each account and by default, either of them can be used for this access.



Select the protocol for this connection to be created.



Enter the name of the container from which you need to select blobs to be listed.


Blob filters

Complete this table to select the blobs to be listed. The parameters to be provided are:

  • Blob prefix: enter the common prefix of the names of the blobs you need to list. This prefix allows you to filter the blobs which have the specified prefix in their names in the given container.

    A blob name contains the virtual hierarchy of the blob itself. This hierarchy is a virtual path to that blob and is relative to the container where that blob is stored. For example, in a container named photos, the name of a photo blob might be 2014/US/Oakland/Talend.jpg.

    For this reason, when you define a prefix, you are actually designating a directory level as the blob filter, for example, 2014/ or 2014/US/.

    If you want to select the blobs stored directly beneath the container level, that is to say, the blobs without virtual path in their names, remove quotation marks and enter null.

  • Include subdirectories: select this check box to select all of the sub-folders and the blobs in those folders beneath the designated directory level. If you leave this check box clear, tAzureStorageList returns only the blobs, if any, directly beneath that directory level.


Die on error

Select this check box to stop the execution of the Job when an error occurs.

Clear the check box to skip any rows on error and complete the process for error-free rows. When errors are skipped, you can collect the rows on error using a Row > Reject link.

Advanced settings

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at the Job level as well as at each component level.


This component is used as a standalone component.

Knowledge about Microsoft Azure Storage is required.

Global Variables

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

ACCOUNT_NAME: the account name for accessing the storage. This is an After variable and it returns a string.

ACCOUNT_KEY: the key associated with the account for accessing the storage. This is an After variable and it returns a string.

CONTAINER: the container name used in this component. This is an After variable and it returns a string.

CURRENT_BLOB: the blob name being processed by this component. This is an After variable and it returns a string.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl + Space to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio User Guide.


If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.



Related scenario

For a related scenario, see Scenario: Retrieving files from a Azure Storage container