You are developing a C# application using the Azure.Storage.Blobs SDK (v12). The application must perform a concurrency-safe update to an existing blob named `configuration.json` by acquiring a 30-second exclusive-write lease, uploading the new content, and then immediately releasing the lease.
How should you order the developer's actions to achieve this workflow?
- 1Initialize a `BlobClient` pointing to the `configuration.json` blob in the target container.
- 2Instantiate a `BlobLeaseClient` using the initialized `BlobClient` instance.
- 3Call `AcquireAsync` on the `BlobLeaseClient` specifying a lease duration of 30 seconds.
- 4Call `UploadAsync` on the `BlobClient` passing `BlobUploadOptions` containing `BlobRequestConditions` populated with the acquired lease ID.
- 5Call `ReleaseAsync` on the `BlobLeaseClient` to free the lease for other processes.
Answer
The correct order of operations is to first initialize the BlobClient, instantiate the BlobLeaseClient, acquire the lease, upload the content using the lease ID, and finally release the lease.
To perform a leased upload operation, you must first create a `BlobClient` to target the blob. Next, you construct a `BlobLeaseClient` using the `BlobClient`. You then acquire the lease to obtain a lease ID. With this lease ID, you can perform the upload by specifying it in the `BlobUploadOptions`. Finally, you release the lease to free the resource.
Step-by-Step Solution
Key Concept
Blob Lease Management Workflow using Azure Storage SDK