add loading spinner to registry push/pull

Signed-off-by: karthik2804 <karthik.ganeshram@fermyon.com>

Cargo.toml

@@ -29,6 +29,7 @@ futures = "0.3"
 glob = "0.3.1"
 hippo-openapi = "0.10"
 hippo = { git = "https://github.com/deislabs/hippo-cli", tag = "v0.16.1" }
+indicatif = "0.17.3"
 is-terminal = "0.4"
 lazy_static = "1.4.0"
 levenshtein = "1.0.5"

src/commands/registry.rs

@@ -1,9 +1,9 @@
+use crate::opts::*;
 use anyhow::{Context, Result};
 use clap::{Parser, Subcommand};
+use indicatif::{ProgressBar, ProgressStyle};
 use spin_oci::Client;
-use std::{io::Read, path::PathBuf};
-
-use crate::opts::*;
+use std::{io::Read, path::PathBuf, time::Duration};
 
 /// Commands for working with OCI registries to distribute applications.
 #[derive(Subcommand, Debug)]
@@ -61,10 +61,14 @@ impl Push {
         let app = spin_loader::local::from_file(&app_file, Some(dir.path())).await?;
 
         let mut client = spin_oci::Client::new(self.insecure, None).await?;
-        let digest = client.push(&app, &self.reference).await?;
 
+        let _spinner = create_dotted_spinner(2000, "Pushing app to the Registry".to_owned());
+
+        let digest = client.push(&app, &self.reference).await?;
         match digest {
-            Some(digest) => println!("Pushed with digest {digest}"),
+            Some(digest) => {
+                println!("Pushed with digest {digest}")
+            }
             None => println!("Pushed; the registry did not return the digest"),
         };
 
@@ -92,8 +96,11 @@ impl Pull {
     /// Pull a Spin application from an OCI registry
     pub async fn run(self) -> Result<()> {
         let mut client = spin_oci::Client::new(self.insecure, None).await?;
-        client.pull(&self.reference).await?;
 
+        let _spinner = create_dotted_spinner(2000, "Pulling app from the Registry".to_owned());
+
+        client.pull(&self.reference).await?;
+        println!("Successfully pulled the app from the registry");
         Ok(())
     }
 }
@@ -165,3 +172,15 @@ impl Login {
         Ok(())
     }
 }
+
+fn create_dotted_spinner(interval: u64, message: String) -> ProgressBar {
+    let spinner = ProgressBar::new_spinner();
+    spinner.enable_steady_tick(Duration::from_millis(interval));
+    spinner.set_style(
+        ProgressStyle::with_template("{msg}{spinner}")
+            .unwrap()
+            .tick_strings(&[".", "..", "...", "....", "....."]),
+    );
+    spinner.set_message(message);
+    spinner
+}