loging git commit hash, build time, and light-client version at startup

Signed-off-by: Eval EXEC <execvy@gmail.com>

Author: eval-exec

light-client-bin/build.rs

@@ -2,14 +2,9 @@ use std::process::Command;
 use vergen_gitcl::{Emitter, GitclBuilder};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    let gitcl = GitclBuilder::default()
-        .sha(true)
-        .dirty(true)
-        .build()?;
+    let gitcl = GitclBuilder::default().sha(true).dirty(true).build()?;
 
-    Emitter::default()
-        .add_instructions(&gitcl)?
-        .emit()?;
+    Emitter::default().add_instructions(&gitcl)?.emit()?;
 
     // Check if git working directory is dirty and create a suffix
     let is_dirty = Command::new("git")

light-client-bin/src/cli.rs

@@ -13,20 +13,34 @@ pub(crate) struct RunConfig {
     pub(crate) run_env: RunEnv,
 }
 
+pub fn binary_version() -> &'static str {
+    env!("CARGO_PKG_VERSION")
+}
+
+pub fn git_hash() -> &'static str {
+    concat!(env!("VERGEN_GIT_SHA"), env!("GIT_DIRTY_SUFFIX"))
+}
+
+pub fn build_time() -> &'static str {
+    env!("VERGEN_BUILD_TIMESTAMP")
+}
+
+fn version_info() -> &'static str {
+    concat!(
+        env!("CARGO_PKG_VERSION"),
+        " (",
+        env!("VERGEN_GIT_SHA"),
+        env!("GIT_DIRTY_SUFFIX"),
+        " ",
+        env!("VERGEN_BUILD_TIMESTAMP"),
+        ")"
+    )
+}
+
 impl AppConfig {
     pub(crate) fn load() -> Result<Self> {
-        let version = concat!(
-            env!("CARGO_PKG_VERSION"),
-            " (",
-            env!("VERGEN_GIT_SHA"),
-            env!("GIT_DIRTY_SUFFIX"),
-            " ",
-            env!("VERGEN_BUILD_TIMESTAMP"),
-            ")"
-        );
-
         let cmd = clap::Command::new("CKB Light Client")
-            .version(version)
+            .version(version_info())
             .author(clap::crate_authors!("\n"))
             .about(clap::crate_description!())
             .subcommand_required(true)

light-client-bin/src/main.rs

@@ -20,7 +20,10 @@ fn main() -> anyhow::Result<()> {
         .try_init()
         .expect("env_logger builder init should be ok");
 
-    log::info!("Starting ...");
+    log::info!("Starting CKB Light Client ...");
+    log::info!("Version: {}", cli::binary_version());
+    log::info!("Git Hash: {}", cli::git_hash());
+    log::info!("Built Time: {}", cli::build_time());
 
     AppConfig::load()?.execute()?;