Fixed BackoffTimeout_ overflow (#15874)

Author: asmyasnikov

src/api/protos/draft/fq.proto

@@ -431,11 +431,16 @@ message ServiceAccountAuth {
     string id = 1 [(Ydb.length).le = 1024];
 }
 
+message TokenAuth {
+    string token = 1 [(Ydb.length).le = 1024, (Ydb.sensitive) = true];
+}
+
 message IamAuth {
     oneof identity {
         CurrentIAMTokenAuth current_iam = 1;
         ServiceAccountAuth service_account = 2;
         NoneAuth none = 3;
+        TokenAuth token = 4;
     }
 }
 

src/api/protos/draft/ydb_maintenance.proto

@@ -182,6 +182,10 @@ message MaintenanceTaskResult {
     repeated ActionGroupStates action_group_states = 2;
     // Try again after this deadline. Specified if there are no performed actions.
     optional google.protobuf.Timestamp retry_after = 3;
+    // The time when the mainteance task was created.
+    google.protobuf.Timestamp create_time = 4;
+    // The last time when the mainteance task was refreshed. Initially equals to create_time.
+    google.protobuf.Timestamp last_refresh_time = 5;
 }
 
 message MaintenanceTaskResponse {
@@ -197,6 +201,10 @@ message GetMaintenanceTaskRequest {
 message GetMaintenanceTaskResult {
     MaintenanceTaskOptions task_options = 1;
     repeated ActionGroupStates action_group_states = 2;
+    // The time when the mainteance task was created.
+    google.protobuf.Timestamp create_time = 3;
+    // The last time when the mainteance task was refreshed. Initially equals to create_time.
+    google.protobuf.Timestamp last_refresh_time = 4;
 }
 
 message GetMaintenanceTaskResponse {

src/client/iam/common/iam.h

@@ -126,7 +126,7 @@ class TGrpcIamCredentialsProvider : public ICredentialsProvider {
 
                     RequestInflight_ = false;
                     sleepDuration = std::min(BackoffTimeout_, BACKOFF_MAX);
-                    BackoffTimeout_ *= 2;
+                    BackoffTimeout_ = std::min(BackoffTimeout_ * 2, BACKOFF_MAX);
                 }
 
                 Sleep(sleepDuration);