[Storage] SAS proof-of-concept

sdk/storage/azure_storage_blob/src/clients/blob_client.rs

@@ -83,6 +83,48 @@ impl BlobClient {
         })
     }
 
+    pub fn from_blob_url(blob_url: &str, options: Option<BlobClientOptions>) -> Result<Self> {
+        let mut options = options.unwrap_or_default();
+
+        let storage_headers_policy = Arc::new(StorageHeadersPolicy);
+        options
+            .client_options
+            .per_call_policies
+            .push(storage_headers_policy);
+
+        // TODO: We would abstract this out to a helper that is fancier and can handle edge-cases, which Url crate may not have been designed to handle
+        // Parse out container name and blob name, then remove them from the path
+        let mut container_name = "";
+        let mut blob_name = "";
+        let mut url = Url::parse(blob_url)?;
+        // URL BEFORE: https://vincenttranstock.blob.core.windows.net/acontainer108f32e8/goodbye.txt?sp=racwd&st=2025-07-21T21:22:28Z&se=2025-07-22T05:37:28Z&spr=https&sv=2024-11-04&sr=b&sig
+        // println!("URL BEFORE: {}", url.clone());
+
+        let url_for_path_segments = url.clone();
+        if let Some(mut segments) = url_for_path_segments.path_segments() {
+            container_name = segments.next().unwrap();
+            blob_name = segments.next().unwrap();
+        }
+        url.set_path("");
+        // URL AFTER NULLED PATH: https://vincenttranstock.blob.core.windows.net/?sp=racwd&st=2025-07-21T21:22:28Z&se=2025-07-22T05:37:28Z&spr=https&sv=2024-11-04&sr=b&sig
+        // println!("URL AFTER NULLED PATH: {}", url.clone());
+
+        // Therefore, given the current design, the endpoint passed to the generated client will have query parameters on it.
+        let client = GeneratedBlobClient::new_no_credential(
+            url.as_str(),
+            container_name.to_string(),
+            blob_name.to_string(),
+            Some(options),
+        )?;
+
+        // Consequently that means currently endpoint() will have all the query parameters in it.
+        // We could strip it out here before saving on this client, but that would mean a mismatch of endpoint values between our client and generated.
+        Ok(Self {
+            endpoint: url,
+            client,
+        })
+    }
+
     /// Returns a new instance of AppendBlobClient.
     ///
     /// # Arguments

sdk/storage/azure_storage_blob/tests/blob_client.rs

@@ -6,12 +6,15 @@ use azure_core::{
     Bytes,
 };
 use azure_core_test::{recorded, TestContext};
-use azure_storage_blob::models::{
-    AccessTier, BlobClientAcquireLeaseResultHeaders, BlobClientChangeLeaseResultHeaders,
-    BlobClientDownloadOptions, BlobClientDownloadResultHeaders, BlobClientGetPropertiesOptions,
-    BlobClientGetPropertiesResultHeaders, BlobClientSetMetadataOptions,
-    BlobClientSetPropertiesOptions, BlobClientSetTierOptions, BlockBlobClientUploadOptions,
-    LeaseState,
+use azure_storage_blob::{
+    models::{
+        AccessTier, BlobClientAcquireLeaseResultHeaders, BlobClientChangeLeaseResultHeaders,
+        BlobClientDownloadOptions, BlobClientDownloadResultHeaders, BlobClientGetPropertiesOptions,
+        BlobClientGetPropertiesResultHeaders, BlobClientSetMetadataOptions,
+        BlobClientSetPropertiesOptions, BlobClientSetTierOptions, BlockBlobClientUploadOptions,
+        LeaseState,
+    },
+    BlobClient,
 };
 use azure_storage_blob_test::{create_test_blob, get_blob_name, get_container_client};
 use std::{collections::HashMap, error::Error, time::Duration};
@@ -423,3 +426,17 @@ async fn test_leased_blob_operations(ctx: TestContext) -> Result<(), Box<dyn Err
     container_client.delete_container(None).await?;
     Ok(())
 }
+
+#[recorded::test]
+async fn test_sassy(ctx: TestContext) -> Result<(), Box<dyn Error>> {
+    // SAS
+    let blob_url = "https://vincenttranstock.blob.core.windows.net/acontainer108f32e8/goodbye.txt?sp=racwd&st=2025-07-21T21:22:28Z&se=2025-07-22T05:37:28Z&spr=https&sv=2024-11-04&sr=b&sig=e7QwWlj42eY%2FqDMSdSppRqSSqlkinW00%2Bymu03LAuek%3D";
+
+    let sas_blob_client = BlobClient::from_blob_url(blob_url, None)?;
+
+    let blob_properties = sas_blob_client.get_properties(None).await?;
+    let content_length = blob_properties.content_length()?;
+    assert_eq!(11, content_length.unwrap());
+
+    Ok(())
+}