chore: Improve the output of dfx build and dfx generate (#4123)

* Make 'dfx build' output the names of the canisters that were built.

* Make the output of 'dfx generate' more readable.

* Add the e2e test.

* Update changelog.

* Fixed the merging issue of changelog file.

* Addressed review comments.

Author: vincent-dfinity

CHANGELOG.md

@@ -13,6 +13,17 @@ Running a local replica is still possible with `--replica`, but this option will
 
 Updated the canister creation fee to `500B` cycles as [documented](https://internetcomputer.org/docs/building-apps/essentials/gas-cost#cycles-price-breakdown).
 
+### chore: improve the `dfx build` output.
+
+Improve the ouput of `dfx build` with the canister names that were built, example as below.
+
+```
+$ dfx build
+Building canister 'hello_backend'.
+Building canister 'hello_frontend'.
+Finished building canisters.
+```
+
 # 0.25.1
 
 ### feat: `skip_cargo_audit` flag in dfx.json to skip `cargo audit` build step

e2e/tests-dfx/build.bash

@@ -150,6 +150,8 @@ teardown() {
   dfx_start
   dfx canister create --all
   assert_command dfx build
+  assert_contains "Building canister 'e2e_project_backend'"
+  assert_contains "Finished building canisters."
 }
 
 @test "build succeeds if enable optimize" {

src/dfx/src/commands/build.rs

@@ -82,13 +82,13 @@ pub fn exec(env: &dyn Environment, opts: CanisterBuildOpts) -> DfxResult {
         }
     }
 
-    slog::info!(logger, "Building canisters...");
-
     let runtime = Runtime::new().expect("Unable to create a runtime");
     let build_config = BuildConfig::from_config(&config)?
         .with_canisters_to_build(canisters_to_build)
         .with_env_file(env_file);
     runtime.block_on(canister_pool.build_or_fail(&env, logger, &build_config))?;
 
+    slog::info!(logger, "Finished building canisters.");
+
     Ok(())
 }

src/dfx/src/lib/builders/mod.rs

@@ -217,7 +217,7 @@ pub trait CanisterBuilder {
         spinner.finish_and_clear();
         info!(
             logger,
-            "Generated type declarations for canister {} to {}",
+            "Generated type declarations for canister '{}' to '{}'",
             &info.get_name(),
             generate_output_dir.display()
         );

src/dfx/src/lib/models/canister.rs

@@ -792,7 +792,7 @@ impl CanisterPool {
                     .map(|c| c.get_name())
                     .contains(&canister.get_name())
                 {
-                    trace!(log, "Building canister '{}'.", canister.get_name());
+                    info!(log, "Building canister '{}'.", canister.get_name());
                 } else {
                     trace!(log, "Not building canister '{}'.", canister.get_name());
                     continue;