update job status

weed/pb/mq.proto

@@ -40,6 +40,11 @@ service SeaweedMessaging {
     rpc CheckTopicPartitionsStatus (CheckTopicPartitionsStatusRequest) returns (CheckTopicPartitionsStatusResponse) {
     }
 
+    rpc CreateTableSnapshot (CreateTableSnapshotRequest) returns (CreateTableSnapshotResponse) {
+    }
+    rpc CheckJobStatus (CheckJobStatusRequest) returns (CheckJobStatusResponse) {
+    }
+
     // data plane
     rpc Publish (stream PublishRequest) returns (stream PublishResponse) {
     }
@@ -47,6 +52,37 @@ service SeaweedMessaging {
     }
 }
 
+message CreateTableSnapshotRequest {
+    string database_name = 1;
+    string table_name = 2;
+    string s3_directory = 3;
+    string aws_access_key_id = 4;
+    string aws_secret_access_key = 5;
+}
+
+enum JobStatus {
+    JOB_STATUS_UNKNOWN = 0;
+    JOB_STATUS_CREATED = 1;
+    JOB_STATUS_FAILED = 2;  // the error will be reported in the error string
+    JOB_STATUS_TRY_LATER = 3; // when the cluster has other snapshots in progress
+    JOB_STATUS_RUNNING = 4;
+    JOB_STATUS_DONE = 5;
+}
+
+message CreateTableSnapshotResponse {
+    string job_id = 1;
+    JobStatus status = 2;
+    string error = 3;
+}
+
+message CheckJobStatusRequest {
+    string job_id = 1;
+}
+message CheckJobStatusResponse {
+    JobStatus status = 1;
+    string error = 2;
+}
+
 //////////////////////////////////////////////////
 message SegmentInfo {
     Segment segment = 1;