Merge pull request #145 from ctaggart/count_blobs

add count_blobs example

Author: MindFlavor

azure_sdk_storage_blob/examples/count_blobs.rs

@@ -0,0 +1,34 @@
+use azure_sdk_core::prelude::*;
+use azure_sdk_storage_blob::prelude::*;
+use azure_sdk_storage_core::prelude::*;
+use futures::Stream;
+use std::error::Error;
+use tokio_core::reactor::Core;
+
+fn main() {
+    code().unwrap();
+}
+
+fn code() -> Result<(), Box<dyn Error>> {
+    let account = std::env::var("STORAGE_ACCOUNT").expect("Set env variable STORAGE_ACCOUNT first!");
+    let master_key = std::env::var("STORAGE_MASTER_KEY").expect("Set env variable STORAGE_MASTER_KEY first!");
+
+    let container = std::env::args()
+        .nth(1)
+        .expect("please specify container name as command line parameter");
+    
+    let mut core = Core::new()?;
+    let client = Client::new(&account, &master_key)?;
+
+    let mut count = 0;
+    let list_blobs = client.stream_list_blobs().with_container_name(&container);
+    let future = list_blobs.finalize().for_each(|_blob| {
+        count += 1;
+        Ok(())
+    });
+    core.run(future)?;
+
+    println!("blob count {}", count);
+
+    Ok(())
+}