[domain-deletion]Introduce a new API for domain deletion (#198)

Author: gazi-yestemirova

go/proto/admin/v1/service.pb.yarpc.go

@@ -51,6 +51,13 @@ service DomainAPI {
   // it cannot be used to start new workflow executions.  Existing workflow executions will continue to run on
   // deprecated domains.
   rpc DeprecateDomain(DeprecateDomainRequest) returns (DeprecateDomainResponse);
+
+  // DeleteDomain permanently removes a domain record. This operation:
+  // - Requires domain to be in DEPRECATED status
+  // - Cannot be performed on domains with running workflows
+  // - Is irreversible and removes all domain data
+  // - Requires proper permissions and security token
+  rpc DeleteDomain(DeleteDomainRequest) returns (DeleteDomainResponse);
 }
 
 message RegisterDomainRequest {
@@ -105,6 +112,14 @@ message DeprecateDomainRequest {
 message DeprecateDomainResponse {
 }
 
+message DeleteDomainRequest {
+  string security_token = 1;
+  string name = 2;
+}
+
+message DeleteDomainResponse {
+}
+
 message DescribeDomainRequest {
   oneof describe_by {
     string id = 1;

go/proto/api/v1/service_domain.pb.go

@@ -98,6 +98,21 @@ service WorkflowService {
       7: shared.AccessDeniedError accessDeniedError,
     )
 
+  /**
+  * DeleteDomain permanently removes a domain record. This operation:
+  * - Requires domain to be in DEPRECATED status
+  * - Cannot be performed on domains with running workflows
+  * - Is irreversible and removes all domain data
+  * - Requires proper permissions and security token
+  **/
+  void DeleteDomain(1: shared.DeleteDomainRequest deleteRequest)
+    throws (
+      1: shared.BadRequestError badRequestError,
+      2: shared.ServiceBusyError serviceBusyError,
+      3: shared.ClientVersionNotSupportedError clientVersionNotSupportedError,
+      4: shared.AccessDeniedError accessDeniedError,
+    )
+
   /**
   * RestartWorkflowExecution restarts a previous workflow
   * If the workflow is currently running it will terminate and restart

go/proto/api/v1/service_domain.pb.yarpc.go

@@ -1144,6 +1144,11 @@ struct DeprecateDomainRequest {
  20: optional string securityToken
 }
 
+struct DeleteDomainRequest {
+ 10: optional string name
+ 20: optional string securityToken
+}
+
 struct StartWorkflowExecutionRequest {
   10: optional string domain
   20: optional string workflowId