feat: add env variable for enable key manager service (#5442)

Co-authored-by: dracarys18 <karthikey.hegde@juspay.in>

crates/router/Cargo.toml

@@ -12,10 +12,11 @@ license.workspace = true
 default = ["kv_store", "stripe", "oltp", "olap", "accounts_cache", "dummy_connector", "payouts", "payout_retry", "retry", "frm", "tls", "v1"]
 olap = ["hyperswitch_domain_models/olap", "storage_impl/olap", "scheduler/olap", "api_models/olap", "dep:analytics"]
 tls = ["actix-web/rustls-0_22"]
+email = ["external_services/email", "scheduler/email", "olap"]
+# keymanager_create, keymanager_mtls, encryption_service should not be removed or added to default feature. Once this features were enabled it can't be disabled as these are breaking changes.
+keymanager_create = []
 keymanager_mtls = ["reqwest/rustls-tls", "common_utils/keymanager_mtls"]
 encryption_service = ["hyperswitch_domain_models/encryption_service", "common_utils/encryption_service"]
-email = ["external_services/email", "scheduler/email", "olap"]
-keymanager_create = []
 frm = ["api_models/frm", "hyperswitch_domain_models/frm", "hyperswitch_connectors/frm", "hyperswitch_interfaces/frm"]
 stripe = ["dep:serde_qs"]
 release = ["stripe", "email", "accounts_cache", "kv_store", "vergen", "recon", "external_services/aws_kms", "external_services/aws_s3", "keymanager_mtls", "keymanager_create", "encryption_service"]

crates/router/src/configs/defaults.rs

@@ -8936,6 +8936,7 @@ impl Default for super::settings::ApiKeys {
 impl Default for super::settings::KeyManagerConfig {
     fn default() -> Self {
         Self {
+            enabled: None,
             url: String::from("localhost:5000"),
             #[cfg(feature = "keymanager_mtls")]
             ca: String::default().into(),

crates/router/src/configs/settings.rs

@@ -210,6 +210,7 @@ pub struct KvConfig {
 
 #[derive(Debug, Deserialize, Clone)]
 pub struct KeyManagerConfig {
+    pub enabled: Option<bool>,
     pub url: String,
     #[cfg(feature = "keymanager_mtls")]
     pub cert: Secret<String>,

crates/router/src/routes/admin.rs

@@ -772,7 +772,7 @@ pub async fn merchant_account_transfer_keys(
     payload: web::Json<api_models::admin::MerchantKeyTransferRequest>,
 ) -> HttpResponse {
     let flow = Flow::ConfigKeyFetch;
-    api::server_wrap(
+    Box::pin(api::server_wrap(
         flow,
         state,
         &req,
@@ -780,7 +780,7 @@ pub async fn merchant_account_transfer_keys(
         |state, _, req, _| transfer_key_store_to_key_manager(state, req),
         &auth::AdminApiAuth,
         api_locking::LockAction::NotApplicable,
-    )
+    ))
     .await
 }
 

crates/router/src/types/domain/types.rs

@@ -8,6 +8,7 @@ impl From<&crate::SessionState> for KeyManagerState {
     fn from(state: &crate::SessionState) -> Self {
         let conf = state.conf.key_manager.get_inner();
         Self {
+            enabled: conf.enabled,
             url: conf.url.clone(),
             client_idle_timeout: state.conf.proxy.idle_pool_connection_timeout,
             #[cfg(feature = "keymanager_mtls")]