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

Co-authored-by: dracarys18 <[email protected]>
juspay · Jul 29, 2024 · 344661b · 344661b
1 parent 2d235a6
commit 344661b
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Showing 7 changed files with 65 additions and 83 deletions.
diff --git a/crates/common_utils/src/types/keymanager.rs b/crates/common_utils/src/types/keymanager.rs
@@ -23,6 +23,7 @@ use crate::{
 
 #[derive(Debug)]
 pub struct KeyManagerState {
+    pub enabled: Option<bool>,
     pub url: String,
     pub client_idle_timeout: Option<u64>,
     #[cfg(feature = "keymanager_mtls")]

diff --git a/crates/hyperswitch_domain_models/src/type_encryption.rs b/crates/hyperswitch_domain_models/src/type_encryption.rs
@@ -17,26 +17,19 @@ mod encrypt {
         crypto,
         encryption::Encryption,
         errors::{self, CustomResult},
-        types::keymanager::{Identifier, KeyManagerState},
+        keymanager::call_encryption_service,
+        transformers::{ForeignFrom, ForeignTryFrom},
+        types::keymanager::{
+            BatchDecryptDataResponse, BatchEncryptDataRequest, BatchEncryptDataResponse,
+            DecryptDataResponse, EncryptDataRequest, EncryptDataResponse, Identifier,
+            KeyManagerState, TransientBatchDecryptDataRequest, TransientDecryptDataRequest,
+        },
     };
     use error_stack::ResultExt;
+    use http::Method;
     use masking::{PeekInterface, Secret};
-    use router_env::{instrument, tracing};
+    use router_env::{instrument, logger, tracing};
     use rustc_hash::FxHashMap;
-    #[cfg(feature = "encryption_service")]
-    use {
-        common_utils::{
-            keymanager::call_encryption_service,
-            transformers::{ForeignFrom, ForeignTryFrom},
-            types::keymanager::{
-                BatchDecryptDataResponse, BatchEncryptDataRequest, BatchEncryptDataResponse,
-                DecryptDataResponse, EncryptDataRequest, EncryptDataResponse,
-                TransientBatchDecryptDataRequest, TransientDecryptDataRequest,
-            },
-        },
-        http::Method,
-        router_env::logger,
-    };
 
     use super::metrics;
 
@@ -104,6 +97,17 @@ mod encrypt {
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError>;
     }
 
+    fn is_encryption_service_enabled(_state: &KeyManagerState) -> bool {
+        #[cfg(feature = "encryption_service")]
+        {
+            _state.enabled.unwrap_or_default()
+        }
+        #[cfg(not(feature = "encryption_service"))]
+        {
+            false
+        }
+    }
+
     #[async_trait]
     impl<
             V: crypto::DecodeMessage + crypto::EncodeMessage + Send + 'static,
@@ -119,12 +123,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<Self, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::encrypt(masked_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     EncryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -156,12 +158,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<Self, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::decrypt(encrypted_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     DecryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -227,13 +227,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::batch_encrypt(masked_data, key, crypt_algo).await
-            }
-
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     BatchEncryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -264,13 +261,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::batch_decrypt(encrypted_data, key, crypt_algo).await
-            }
-
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     BatchDecryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -356,12 +350,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<Self, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::encrypt(masked_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     EncryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -393,12 +385,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<Self, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::decrypt(encrypted_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     DecryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -465,12 +455,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::batch_encrypt(masked_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     BatchEncryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -501,12 +489,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::batch_decrypt(encrypted_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     BatchDecryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -590,12 +576,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<Self, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::encrypt(masked_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     EncryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -627,12 +611,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<Self, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::decrypt(encrypted_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     DecryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -694,13 +676,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::batch_encrypt(masked_data, key, crypt_algo).await
-            }
-
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     BatchEncryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,
@@ -731,12 +710,10 @@ mod encrypt {
             key: &[u8],
             crypt_algo: V,
         ) -> CustomResult<FxHashMap<String, Self>, errors::CryptoError> {
-            #[cfg(not(feature = "encryption_service"))]
-            {
+            // If encryption service is not enabled, fall back to application encryption or else call encryption service
+            if !is_encryption_service_enabled(state) {
                 Self::batch_decrypt(encrypted_data, key, crypt_algo).await
-            }
-            #[cfg(feature = "encryption_service")]
-            {
+            } else {
                 let result: Result<
                     BatchDecryptDataResponse,
                     error_stack::Report<errors::KeyManagerClientError>,

diff --git a/crates/router/Cargo.toml b/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"]
-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, 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"]
 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"]

diff --git a/crates/router/src/configs/defaults.rs b/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(),

diff --git a/crates/router/src/configs/settings.rs b/crates/router/src/configs/settings.rs
@@ -220,6 +220,7 @@ 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>,

diff --git a/crates/router/src/routes/admin.rs b/crates/router/src/routes/admin.rs
@@ -772,15 +772,15 @@ 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,
         payload.into_inner(),
         |state, _, req, _| transfer_key_store_to_key_manager(state, req),
         &auth::AdminApiAuth,
         api_locking::LockAction::NotApplicable,
-    )
+    ))
     .await
 }
 

diff --git a/crates/router/src/types/domain/types.rs b/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")]