Upate version api call (#2899)

api/src/handlers.rs

@@ -18,8 +18,8 @@ mod peers_api;
 mod pool_api;
 mod server_api;
 mod transactions_api;
-mod version_api;
 mod utils;
+mod version_api;
 
 use self::blocks_api::BlockHandler;
 use self::blocks_api::HeaderHandler;
@@ -33,10 +33,10 @@ use self::peers_api::PeersConnectedHandler;
 use self::pool_api::PoolInfoHandler;
 use self::pool_api::PoolPushHandler;
 use self::server_api::IndexHandler;
-use self::server_api::StatusHandler;
 use self::server_api::KernelDownloadHandler;
-use self::version_api::VersionHandler;
+use self::server_api::StatusHandler;
 use self::transactions_api::TxHashSetHandler;
+use self::version_api::VersionHandler;
 use crate::auth::{BasicAuthMiddleware, GRIN_BASIC_REALM};
 use crate::chain;
 use crate::p2p;
@@ -160,7 +160,9 @@ pub fn build_router(
 	let peer_handler = PeerHandler {
 		peers: Arc::downgrade(&peers),
 	};
-	let version_handler = VersionHandler;
+	let version_handler = VersionHandler {
+		chain: Arc::downgrade(&chain),
+	};
 
 	let mut router = Router::new();
 

api/src/handlers/version_api.rs

@@ -12,25 +12,32 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use crate::core::core::block::HeaderVersion;
-
+use super::utils::w;
+use crate::chain;
 use crate::rest::*;
 use crate::router::{Handler, ResponseFuture};
 use crate::types::Version;
 use crate::web::*;
 use hyper::{Body, Request};
+use std::sync::Weak;
 
 const CRATE_VERSION: &'static str = env!("CARGO_PKG_VERSION");
 
 /// Version handler. Get running node API version
 /// GET /v1/version
-pub struct VersionHandler;
+pub struct VersionHandler {
+	pub chain: Weak<chain::Chain>,
+}
 
 impl VersionHandler {
 	fn get_version(&self) -> Result<Version, Error> {
+		let head = w(&self.chain)?
+			.head_header()
+			.map_err(|e| ErrorKind::Internal(format!("can't get head: {}", e)))?;
+
 		Ok(Version {
 			node_version: CRATE_VERSION.to_owned(),
-			block_header_version: HeaderVersion::default().into(),
+			block_header_version: head.version.into(),
 		})
 	}
 }