feat(upgrade): allow specifying a version (#5156)

cli/flags.rs

@@ -65,6 +65,7 @@ pub enum DenoSubcommand {
   Upgrade {
     dry_run: bool,
     force: bool,
+    version: Option<String>,
   },
 }
 
@@ -563,7 +564,12 @@ fn test_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
 fn upgrade_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
   let dry_run = matches.is_present("dry-run");
   let force = matches.is_present("force");
-  flags.subcommand = DenoSubcommand::Upgrade { dry_run, force };
+  let version = matches.value_of("version").map(|s| s.to_string());
+  flags.subcommand = DenoSubcommand::Upgrade {
+    dry_run,
+    force,
+    version,
+  };
 }
 
 fn doc_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
@@ -811,14 +817,21 @@ Future runs of this module will trigger no downloads or compilation unless
 
 fn upgrade_subcommand<'a, 'b>() -> App<'a, 'b> {
   SubCommand::with_name("upgrade")
-    .about("Upgrade deno executable to newest version")
+    .about("Upgrade deno executable to given version")
     .long_about(
-      "Upgrade deno executable to newest available version.
+      "Upgrade deno executable to the given version.
+Defaults to latest.
 
-The latest version is downloaded from
+The version is downloaded from
 https://github.com/denoland/deno/releases
 and is used to replace the current executable.",
     )
+    .arg(
+      Arg::with_name("version")
+        .long("version")
+        .help("The version to upgrade to")
+        .takes_value(true),
+    )
     .arg(
       Arg::with_name("dry-run")
         .long("dry-run")
@@ -1354,6 +1367,7 @@ mod tests {
         subcommand: DenoSubcommand::Upgrade {
           force: true,
           dry_run: true,
+          version: None
         },
         ..Flags::default()
       }

cli/lib.rs

@@ -616,9 +616,11 @@ pub fn main() {
       }
       return;
     }
-    DenoSubcommand::Upgrade { force, dry_run } => {
-      upgrade_command(dry_run, force).boxed_local()
-    }
+    DenoSubcommand::Upgrade {
+      force,
+      dry_run,
+      version,
+    } => upgrade_command(dry_run, force, version).boxed_local(),
     _ => unreachable!(),
   };
 

cli/tests/integration_tests.rs

@@ -224,6 +224,37 @@ fn upgrade_in_tmpdir() {
   // TODO(ry) assert!(mtime1 < mtime2);
 }
 
+// Warning: this test requires internet access.
+#[test]
+fn upgrade_with_version_in_tmpdir() {
+  let temp_dir = TempDir::new().unwrap();
+  let exe_path = if cfg!(windows) {
+    temp_dir.path().join("deno")
+  } else {
+    temp_dir.path().join("deno.exe")
+  };
+  let _ = std::fs::copy(util::deno_exe_path(), &exe_path).unwrap();
+  assert!(exe_path.exists());
+  let _mtime1 = std::fs::metadata(&exe_path).unwrap().modified().unwrap();
+  let status = Command::new(&exe_path)
+    .arg("upgrade")
+    .arg("--force")
+    .arg("--version")
+    .arg("0.42.0")
+    .spawn()
+    .unwrap()
+    .wait()
+    .unwrap();
+  assert!(status.success());
+  let upgraded_deno_version = String::from_utf8(
+    Command::new(&exe_path).arg("-V").output().unwrap().stdout,
+  )
+  .unwrap();
+  assert!(upgraded_deno_version.contains("0.42.0"));
+  let _mtime2 = std::fs::metadata(&exe_path).unwrap().modified().unwrap();
+  // TODO(ry) assert!(mtime1 < mtime2);
+}
+
 #[test]
 fn installer_test_local_module_run() {
   let temp_dir = TempDir::new().expect("tempdir fail");

cli/upgrade.rs

@@ -52,36 +52,64 @@ async fn get_latest_version(client: &Client) -> Result<Version, ErrBox> {
 
 /// Asynchronously updates deno executable to greatest version
 /// if greatest version is available.
-pub async fn upgrade_command(dry_run: bool, force: bool) -> Result<(), ErrBox> {
+pub async fn upgrade_command(
+  dry_run: bool,
+  force: bool,
+  version: Option<String>,
+) -> Result<(), ErrBox> {
   let client = Client::builder().redirect(Policy::none()).build()?;
-  let latest_version = get_latest_version(&client).await?;
   let current_version = semver_parse(crate::version::DENO).unwrap();
 
+  let install_version = match version {
+    Some(passed_version) => match semver_parse(&passed_version) {
+      Ok(ver) => {
+        if !force && current_version == ver {
+          println!("Version {} is already installed", &ver);
+          std::process::exit(1)
+        } else {
+          ver
+        }
+      }
+      Err(_) => {
+        eprintln!("Invalid semver passed");
+        std::process::exit(1)
+      }
+    },
+    None => {
+      let latest_version = get_latest_version(&client).await?;
+
       if !force && current_version >= latest_version {
         println!(
           "Local deno version {} is the most recent release",
           &crate::version::DENO
         );
+        std::process::exit(1)
       } else {
+        latest_version
+      }
+    }
+  };
+
   println!(
-      "New version has been found\nDeno is upgrading to version {}",
-      &latest_version
+    "Version has been found\nDeno is upgrading to version {}",
+    &install_version
   );
+
   let archive_data =
-      download_package(&compose_url_to_exec(&latest_version)?, client).await?;
+    download_package(&compose_url_to_exec(&install_version)?, client).await?;
 
   let old_exe_path = std::env::current_exe()?;
   let new_exe_path = unpack(archive_data)?;
   let permissions = fs::metadata(&old_exe_path)?.permissions();
   fs::set_permissions(&new_exe_path, permissions)?;
-    check_exe(&new_exe_path, &latest_version)?;
+  check_exe(&new_exe_path, &install_version)?;
 
   if !dry_run {
     replace_exe(&new_exe_path, &old_exe_path)?;
   }
 
-    println!("Upgrade done successfully")
-  }
+  println!("Upgrade done successfully");
+
   Ok(())
 }