[#329] node: Add async evacuate proto methods

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/services/control/server/evacuate_async.go

@@ -0,0 +1,20 @@
+package control
+
+import (
+	"context"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
+)
+
+func (s *Server) StartShardEvacuation(context.Context, *control.StartShardEvacuationRequest) (*control.StartShardEvacuationResponse, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (s *Server) GetShardEvacuationStatus(context.Context, *control.GetShardEvacuationStatusRequest) (*control.GetShardEvacuationStatusResponse, error) {
+	return nil, fmt.Errorf("not implemented")
+}
+
+func (s *Server) StopShardEvacuation(context.Context, *control.StopShardEvacuationRequest) (*control.StopShardEvacuationResponse, error) {
+	return nil, fmt.Errorf("not implemented")
+}

pkg/services/control/service.proto

@@ -29,6 +29,15 @@ service ControlService {
     // EvacuateShard moves all data from one shard to the others.
     rpc EvacuateShard (EvacuateShardRequest) returns (EvacuateShardResponse);
 
+    // StartShardEvacuation starts moving all data from one shard to the others.
+    rpc StartShardEvacuation (StartShardEvacuationRequest) returns (StartShardEvacuationResponse);
+
+    // GetShardEvacuationStatus returns evacuation status.
+    rpc GetShardEvacuationStatus (GetShardEvacuationStatusRequest) returns (GetShardEvacuationStatusResponse);
+
+    // StopShardEvacuation stops moving all data from one shard to the others.
+    rpc StopShardEvacuation (StopShardEvacuationRequest) returns (StopShardEvacuationResponse);
+
     // FlushCache moves all data from one shard to the others.
     rpc FlushCache (FlushCacheRequest) returns (FlushCacheResponse);
 
@@ -298,3 +307,97 @@ message DoctorResponse {
     Body body = 1;
     Signature signature = 2;
 }
+
+// StartShardEvacuation request.
+message StartShardEvacuationRequest {
+    // Request body structure.
+    message Body {
+        // IDs of the shards.
+        repeated bytes shard_ID = 1;
+        // Flag indicating whether object read errors should be ignored.
+        bool ignore_errors = 2;
+    }
+
+    Body body = 1;
+    Signature signature = 2;
+}
+
+// StartShardEvacuation response.
+message StartShardEvacuationResponse {
+    // Response body structure.
+    message Body {}
+
+    Body body = 1;
+    Signature signature = 2;
+}
+
+// GetShardEvacuationStatus request.
+message GetShardEvacuationStatusRequest {
+    // Request body structure.
+    message Body {}
+
+    Body body = 1;
+    Signature signature = 2;
+}
+
+// GetShardEvacuationStatus response.
+message GetShardEvacuationStatusResponse {
+    // Response body structure.
+    message Body {
+        // Evacuate status enum.
+        enum Status {
+            EVACUATE_SHARD_STATUS_UNDEFINED = 0;
+            RUNNING = 1;
+            COMPLETED = 2;
+        }
+
+        // Unix timestamp value.
+        message UnixTimestamp {
+            int64 value = 1;
+        }
+
+        // Duration in seconds.
+        message Duration {
+            int64 seconds = 1;
+        }
+
+        // Total objects to evacuate count. The value is approximate, so evacuated + failed == total is not guaranteed after completion.
+        uint64 total = 1;
+        // Evacuated objects count.
+        uint64 evacuated = 2;
+        // Failed objects count.
+        uint64 failed = 3;
+
+        // Shard IDs.
+        repeated bytes shard_ID = 4;
+        // Evacuation process status.
+        Status status = 5;
+        // Evacuation process duration.
+        Duration duration = 6;
+        // Evacuation process started at timestamp.
+        UnixTimestamp started_at = 7;
+        // Error message if evacuation failed.
+        string error_message = 8;
+    }
+
+    Body body = 1;
+    Signature signature = 2;
+}
+
+// StopShardEvacuation request.
+message StopShardEvacuationRequest {
+    // Request body structure.
+    message Body {}
+
+    Body body = 1;
+    Signature signature = 2;
+}
+
+// StopShardEvacuation response.
+message StopShardEvacuationResponse {
+    // Response body structure.
+    message Body {}
+
+    Body body = 1;
+    Signature signature = 2;
+}