Add a feature flag to include git commit hash to the version string

Makefile

@@ -9,7 +9,7 @@ all: clippy
 	cargo build --target=x86_64-unknown-linux-musl --all
 
 release: clippy
-	cargo build --release --target=x86_64-unknown-linux-musl --all
+	cargo build --release --features git-version --target=x86_64-unknown-linux-musl --all
 
 run: all
 	sudo ./target/debug/feos --ipam $(IPAM)

feos/Cargo.toml

@@ -56,4 +56,7 @@ prost = { workspace = true }
 hyper-util = { workspace = true }
 once_cell = { workspace = true }
 tower = { workspace = true }
-tempfile = { workspace = true }
+tempfile = { workspace = true }
+
+[features]
+git-version = ["feos-utils/git-version"]

feos/services/host-service/src/worker/info.rs

@@ -325,7 +325,7 @@ pub async fn handle_get_version_info(
     let result = fs::read_to_string(path)
         .await
         .map(|kernel_version| {
-            let feos_version = env!("CARGO_PKG_VERSION").to_string();
+            let feos_version = feos_utils::version::full_version_string();
             GetVersionInfoResponse {
                 kernel_version: kernel_version.trim().to_string(),
                 feos_version,

feos/src/lib.rs

@@ -9,7 +9,6 @@ use image_service::IMAGE_SERVICE_SOCKET;
 use log::{error, info, warn};
 use nix::unistd::Uid;
 use setup::*;
-use std::env;
 use tokio::{fs, net::UnixListener, sync::mpsc};
 use tokio_stream::wrappers::UnixListenerStream;
 use tonic::transport::Server;
@@ -25,7 +24,7 @@ pub async fn run_server(restarted_after_upgrade: bool) -> Result<()> {
     ╚═╝     ╚══════╝ ╚═════╝ ╚══════╝
                  v{}
     ",
-        env!("CARGO_PKG_VERSION")
+        feos_utils::version::full_version_string()
     );
 
     let log_handle = feos_utils::feos_logger::Builder::new()

feos/utils/Cargo.toml

@@ -15,4 +15,11 @@ netlink-packet-route = { workspace = true }
 pnet = { workspace = true }
 rtnetlink = { workspace = true }
 socket2 = { workspace = true }
-libc = { workspace = true }
+libc = { workspace = true }
+
+[build-dependencies]
+cc = "1.0"
+
+[features]
+default = []
+git-version = []

feos/utils/build.rs

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2023 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+use std::process::Command;
+
+fn main() {
+    println!("cargo:rerun-if-changed=.git/HEAD");
+
+    let output = Command::new("git")
+        .args(["rev-parse", "--short", "HEAD"])
+        .output();
+
+    if let Ok(output) = output {
+        if output.status.success() {
+            let commit_hash = String::from_utf8_lossy(&output.stdout).trim().to_string();
+            println!("cargo:rustc-env=GIT_COMMIT_HASH={commit_hash}");
+        }
+    }
+}

feos/utils/src/lib.rs

@@ -5,3 +5,4 @@ pub mod feos_logger;
 pub mod filesystem;
 pub mod host;
 pub mod network;
+pub mod version;

feos/utils/src/version.rs

@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: 2023 SAP SE or an SAP affiliate company and IronCore contributors
+// SPDX-License-Identifier: Apache-2.0
+
+#[cfg(not(feature = "git-version"))]
+pub fn full_version_string() -> String {
+    env!("CARGO_PKG_VERSION").to_string()
+}
+
+#[cfg(feature = "git-version")]
+pub fn full_version_string() -> String {
+    let version = env!("CARGO_PKG_VERSION");
+    let commit_hash = option_env!("GIT_COMMIT_HASH").unwrap_or("???????");
+    format!("{} ({})", version, commit_hash)
+}