src/bin/test_chunk_speed2.rs: switch to async

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/bin/test_chunk_speed2.rs

@@ -1,6 +1,5 @@
 use failure::*;
 use futures::*;
-use std::sync::atomic::{AtomicUsize, Ordering};
 
 extern crate proxmox_backup;
 
@@ -13,42 +12,43 @@ use proxmox_backup::backup::*;
 //
 // Note: I can currently get about 830MB/s
 
-fn main() {
+#[tokio::main]
+async fn main() {
+    if let Err(err) = run().await {
+        panic!("ERROR: {}", err);
+    }
+}
 
-    let repeat = std::sync::Arc::new(AtomicUsize::new(0));
-    let repeat2 = repeat.clone();
+async fn run() -> Result<(), Error> {
 
-    let stream_len = std::sync::Arc::new(AtomicUsize::new(0));
-    let stream_len2 = stream_len.clone();
+    let file = tokio::fs::File::open("random-test.dat").await?;
 
-    let task = tokio::fs::File::open("random-test.dat")
-        .map_err(Error::from)
-        .and_then(move |file| {
     let stream = tokio::codec::FramedRead::new(file, tokio::codec::BytesCodec::new())
-                .map(|bytes| bytes.to_vec()).map_err(Error::from);
+        .map_ok(|bytes| bytes.to_vec())
+        .map_err(Error::from);
+
     //let chunk_stream = FixedChunkStream::new(stream, 4*1024*1024);
-            let chunk_stream = ChunkStream::new(stream, None);
+    let mut chunk_stream = ChunkStream::new(stream, None);
 
     let start_time = std::time::Instant::now();
 
-            chunk_stream
-                .for_each(move |chunk| {
-                    if chunk.len() > 16*1024*1024 { panic!("Chunk too large {}", chunk.len()); }
-                    repeat.fetch_add(1, Ordering::SeqCst);
-                    stream_len.fetch_add(chunk.len(), Ordering::SeqCst);
+    let mut repeat = 0;
+    let mut stream_len = 0;
+    while let Some(chunk) = chunk_stream.try_next().await? {
+        if chunk.len() > 16*1024*1024 {
+            panic!("Chunk too large {}", chunk.len());
+        }
+
+        repeat += 1;
+        stream_len += chunk.len();
+
         println!("Got chunk {}", chunk.len());
-                    Ok(())
-                })
-                .and_then(move |_result| {
-                    let repeat = repeat2.load(Ordering::SeqCst);
-                    let stream_len = stream_len2.load(Ordering::SeqCst);
+    }
+
     let speed = ((stream_len*1000000)/(1024*1024))/(start_time.elapsed().as_micros() as usize);
     println!("Uploaded {} chunks in {} seconds ({} MB/s).", repeat, start_time.elapsed().as_secs(), speed);
     println!("Average chunk size was {} bytes.", stream_len/repeat);
     println!("time per request: {} microseconds.", (start_time.elapsed().as_micros())/(repeat as u128));
-                    Ok(())
-                })
-        });
 
-    tokio::run(task.map_err(|err| { panic!("ERROR: {}", err); }));
+    Ok(())
 }