Log config version in SCS Server

Summary:
Other diffs in T161723796 added logging to Mononoke and LFS Server; this diff does the same to SCS Server.

We have no middleware here, so we just straight up log in the Thrift service handler.

Reviewed By: clara-9

Differential Revision: D55123060

fbshipit-source-id: b0ffc3277b6d569cdad35b210bca4b1eac824dcb

eden/mononoke/scs_server/TARGETS

@@ -65,6 +65,7 @@ rust_binary(
         "//eden/mononoke/megarepo_api:megarepo_error",
         "//eden/mononoke/metaconfig:metaconfig_types",
         "//eden/mononoke/mononoke_api:mononoke_api",
+        "//eden/mononoke/mononoke_configs:mononoke_configs",
         "//eden/mononoke/mononoke_types:mononoke_types",
         "//eden/mononoke/permission_checker:permission_checker",
         "//eden/mononoke/phases:phases",

eden/mononoke/scs_server/src/main.rs

@@ -240,6 +240,7 @@ fn main(fb: FacebookInit) -> Result<(), Error> {
         scuba_builder,
         args.scribe_logging_args.get_scribe(fb)?,
         security_checker,
+        app.configs(),
         &app.repo_configs().common,
     );
     let service = {

eden/mononoke/scs_server/src/source_control_impl.rs

@@ -41,6 +41,7 @@ use mononoke_api::RepoContext;
 use mononoke_api::SessionContainer;
 use mononoke_api::TreeContext;
 use mononoke_api::TreeId;
+use mononoke_configs::MononokeConfigs;
 use mononoke_types::hash::Sha1;
 use mononoke_types::hash::Sha256;
 use once_cell::sync::Lazy;
@@ -102,6 +103,7 @@ pub(crate) struct SourceControlServiceImpl {
     pub(crate) scuba_builder: MononokeScubaSampleBuilder,
     pub(crate) identity: Identity,
     pub(crate) scribe: Scribe,
+    pub(crate) configs: Arc<MononokeConfigs>,
     identity_proxy_checker: Arc<ConnectionSecurityChecker>,
 }
 
@@ -116,6 +118,7 @@ impl SourceControlServiceImpl {
         mut scuba_builder: MononokeScubaSampleBuilder,
         scribe: Scribe,
         identity_proxy_checker: ConnectionSecurityChecker,
+        configs: Arc<MononokeConfigs>,
         common_config: &CommonConfig,
     ) -> Self {
         scuba_builder.add_common_server_data();
@@ -131,6 +134,7 @@ impl SourceControlServiceImpl {
                 common_config.internal_identity.id_data.as_str(),
             ),
             scribe,
+            configs,
             identity_proxy_checker: Arc::new(identity_proxy_checker),
         }
     }
@@ -182,6 +186,11 @@ impl SourceControlServiceImpl {
             }
         }
 
+        if let Some(config_info) = self.configs.as_ref().config_info().as_ref() {
+            scuba.add("config_store_version", config_info.content_hash.clone());
+            scuba.add("config_store_last_updated_at", config_info.last_updated_at);
+        }
+
         let sampling_rate = core::num::NonZeroU64::new(if POPULAR_METHODS.contains(name) {
             const FALLBACK_SAMPLING_RATE: u64 = 1000;
             justknobs::get_as::<u64>("scm/mononoke:scs_popular_methods_sampling_rate", None)