1 files changed, 33 insertions, 0 deletions
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 9b1e884c7..71a9c08b8 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -25,6 +25,13 @@ service Seaweed {
     }
     rpc GetMasterConfiguration (GetMasterConfigurationRequest) returns (GetMasterConfigurationResponse) {
     }
+    rpc ListMasterClients (ListMasterClientsRequest) returns (ListMasterClientsResponse) {
+    }
+    rpc LeaseAdminToken (LeaseAdminTokenRequest) returns (LeaseAdminTokenResponse) {
+    }
+    rpc ReleaseAdminToken (ReleaseAdminTokenRequest) returns (ReleaseAdminTokenResponse) {
+    }
+
 }
 
 //////////////////////////////////////////////////
@@ -112,6 +119,7 @@ message SuperBlockExtra {
 
 message KeepConnectedRequest {
     string name = 1;
+    uint32 grpc_port = 2;
 }
 
 message VolumeLocation {
@@ -264,3 +272,28 @@ message GetMasterConfigurationResponse {
     string metrics_address = 1;
     uint32 metrics_interval_seconds = 2;
 }
+
+message ListMasterClientsRequest {
+    string client_type = 1;
+}
+message ListMasterClientsResponse {
+    repeated string grpc_addresses = 1;
+}
+
+message LeaseAdminTokenRequest {
+    int64 previous_token = 1;
+    int64 previous_lock_time = 2;
+    string lock_name = 3;
+}
+message LeaseAdminTokenResponse {
+    int64 token = 1;
+    int64 lock_ts_ns = 2;
+}
+
+message ReleaseAdminTokenRequest {
+    int64 previous_token = 1;
+    int64 previous_lock_time = 2;
+    string lock_name = 3;
+}
+message ReleaseAdminTokenResponse {
+}