fix(payment_methods_v2): update fingerprint implementation in v2 (#7270)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/router/src/core/payment_methods.rs

@@ -921,6 +921,7 @@ pub async fn create_payment_method(
         merchant_account,
         key_store,
         None,
+        &customer_id,
     )
     .await;
 
@@ -1513,11 +1514,13 @@ pub async fn vault_payment_method(
     merchant_account: &domain::MerchantAccount,
     key_store: &domain::MerchantKeyStore,
     existing_vault_id: Option<domain::VaultId>,
+    customer_id: &id_type::GlobalCustomerId,
 ) -> RouterResult<(pm_types::AddVaultResponse, String)> {
     let db = &*state.store;
 
     // get fingerprint_id from vault
-    let fingerprint_id_from_vault = vault::get_fingerprint_id_from_vault(state, pmd)
+    let fingerprint_id_from_vault =
+        vault::get_fingerprint_id_from_vault(state, pmd, customer_id.get_string_repr().to_owned())
             .await
             .change_context(errors::ApiErrorResponse::InternalServerError)
             .attach_printable("Failed to get fingerprint_id from vault")?;
@@ -1796,6 +1799,7 @@ pub async fn update_payment_method_core(
         &merchant_account,
         &key_store,
         current_vault_id, // using current vault_id for now, will have to refactor this
+        &payment_method.customer_id,
     ) // to generate new one on each vaulting later on
     .await
     .attach_printable("Failed to add payment method in vault")?;

crates/router/src/core/payment_methods/vault.rs

@@ -1257,8 +1257,8 @@ pub async fn get_fingerprint_id_from_vault<
 >(
     state: &routes::SessionState,
     data: &D,
+    key: String,
 ) -> CustomResult<String, errors::VaultError> {
-    let key = data.get_vaulting_data_key();
     let data = serde_json::to_string(data)
         .change_context(errors::VaultError::RequestEncodingFailed)
         .attach_printable("Failed to encode Vaulting data to string")?;