Merge pull request #9 from runabove/hash

Hash

.gitignore

@@ -1,6 +1,7 @@
 # Generated by Cargo
 # will have compiled files and executables
 /target/
+version.rs
 
 # These are backup files generated by rustfmt
 **/*.rs.bk

Cargo.toml

@@ -1,8 +1,9 @@
 [package]
-
 name = "beamium"
-version = "1.0.1"
-authors = [ "d33d33 <kevin@d33d33.fr>" ]
+version = "1.0.2"
+authors = [ "d33d33 <kevin.georges@corp.ovh.com>" ]
+
+build = "build.rs"
 
 [dependencies]
 clap = "2.19.2"

build.rs

@@ -0,0 +1,30 @@
+use std::process::Command;
+use std::path::Path;
+use std::fs::File;
+use std::io::prelude::*;
+
+fn main() {
+    let output = Command::new("git")
+                        .arg("rev-parse")
+                        .arg("HEAD")
+                        .output()
+                        .expect("failed to execute process");
+
+    let hash = String::from_utf8_lossy(&output.stdout);
+    let content = format!("static COMMIT: &'static str = {:?};\n", hash.trim());
+
+    let path = Path::new("./src/version.rs");
+
+    if path.exists() {
+        let mut f = File::open(path).expect("fail to open result.rs");
+        let mut current = String::new();
+        f.read_to_string(&mut current).expect("fail to read result.rs");
+
+        if current == content {
+            return
+        }
+    };
+
+    let mut out = File::create(path).unwrap();
+    out.write(content.as_bytes()).unwrap();
+}

src/main.rs

@@ -30,6 +30,8 @@ mod router;
 mod sink;
 mod log;
 
+include!("version.rs");
+
 static mut SIGINT: bool = false;
 
 extern "C" fn handle_sigint(_: i32) {
@@ -51,7 +53,7 @@ fn main() {
     log::bootstrap();
 
     let matches = App::new("beamium")
-        .version(env!("CARGO_PKG_VERSION"))
+        .version(&*format!("{} ({})", env!("CARGO_PKG_VERSION"), COMMIT))
         .author("d33d33 <kevin@d33d33.fr>")
         .about("Send Prometheus metrics to Warp10")
         .args_from_usage("-c, --config=[FILE] 'Sets a custom config file'