Storage Gen2 API in Postman

Question

Hi ,

I am new to Azure Portal and would like to use the Azure Gen2 API to create the files on storage.

I have been able to generate the access token in Postman -

https://login.microsoftonline.com/\/oauth2/v2.0/token

I now have access token to be used.

Now I call -

https://storageaccountshiv.dfs.core.windows.net/blue?resource=filesystem

Headers passed are -

Authorization : Bearer {access token}
x-ms-version : 2020-12-23
Content-Length : 0

But complains
{
"error": {
"code": "InvalidHeaderValue",
"message": "The value for one of the HTTP headers is not in the correct format. RequestId:34111c9a-d01f-0004-1787-d9cf50000000 Time:2020-12-23T23:55:50.5175280Z"
}
}

I went through some posts and it says this is what we need to pass. Any idea what could be missing here.

This should create a folder under "Blob Containers".. Correct?

Thanks in advance.

Thanks,
Shiv

Answer

In Azure portal, generate the "Shared Access Signature".

Paste the File service SAS URL into Postman to create the file "abc.txt"

https://storageaccountshiv.dfs.core.windows.net/blue/abc.txt?sv=2019-12-12&ss=bfqt&srt=sco&sp=rwdlacupx&se=2020-12-31T02:36:19Z&st=2020-12-30T18:36:19Z&spr=https&sig=qbX6rmPtzQzc%3BKldZwf9sR98a7UWLOiy0RFUZj6KK6U%3D

Note:
In this example, select everything in "Allowed services", "Allowed resource types", "Allowed permissions" and "Blob versioning permissions"

Answer

I created a container "shiv" through Azure portal and now using API want to add a file in this container.

Copied File Service SAS URL and added /shiv/abc.txt

https://storageaccountshiv.file.core.windows.net/shiv/abc.txt?sv=2019-12-12&ss=bfqt&srt=sco&sp=rwdlacupx&se=2020-12-31T03:33:47Z&st=2020-12-30T19:33:47Z&spr=https&sig=YBJW3pYdL1t0qnqfYb58tvyK8i2tDDSyOJeMgWwGXY%3D

Response is -

Answer

Hi @Shiv Khullar ,

Please follow the following steps to create the container called "shiv2":

Step 1) Create Create a storage account to use with Azure Data Lake Storage Gen2, https://video2.skills-academy.com/en-us/azure/storage/blobs/create-data-lake-storage-account

Step 2) Generate SAS

(Note: Use the Blob Service URL)

Step 3) Test with Postman

(Note: Set the header, x-ms-blob-type: BlockBlob)

Step 4) Examine "Data Lake Storage" in Azure portal that the container "shiv2" has been created successfully.

Answer

Hi TeikHengSun-1687,

Thanks a lot for sharing the detailed steps.. I feel these steps are missing in the documentation.

Create container worked like a charm.

I have two more questions -

Can you pls send me postman request to create a file under the container. What would be the filesystem and restype and if any header needs to be added.
I would like to try the same create container and create file under the container with oAuth2.0 authentication. Was not successful in doing that.
I am able to generate the oAuth2.0 accesstoken but when I try to use it to create the container , it doesnt work.

Thank you so much for your support.

Thanks,
Shiv

Answer

@Shiv Khullar Updating the thread after the issue is been fixed , this can be beneficial to other community members who is facing the similar issue.

Proper parameters and syntax for Postman,
The documentation which we are following: Put Blob (REST API) - Azure Storage | Microsoft Learn
PUT: https://.blob.core.windows.net/

Include Headers:

Authorization - REQUIRED
X-ms-date = ‘Tue, 05 Jan hh:mm:ss GMT - REQUIRED
X-ms-version = 2020-02-10 – REQUIRED
Content-Length = 0 - REQUIRED

------------------------------------------------------------------------------------------------------------------------------------------------

Please don’t forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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Storage Gen2 API in Postman

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