syntax = "proto3";

package master_pb;

option go_package = "github.com/chrislusf/seaweedfs/weed/pb/master_pb";

//////////////////////////////////////////////////

service Seaweed {
  rpc SendHeartbeat (stream Heartbeat) returns (stream HeartbeatResponse) {
  }
  rpc KeepConnected (stream KeepConnectedRequest) returns (stream KeepConnectedResponse) {
  }
  rpc LookupVolume (LookupVolumeRequest) returns (LookupVolumeResponse) {
  }
  rpc Assign (AssignRequest) returns (AssignResponse) {
  }
  rpc Statistics (StatisticsRequest) returns (StatisticsResponse) {
  }
  rpc CollectionList (CollectionListRequest) returns (CollectionListResponse) {
  }
  rpc CollectionDelete (CollectionDeleteRequest) returns (CollectionDeleteResponse) {
  }
  rpc VolumeList (VolumeListRequest) returns (VolumeListResponse) {
  }
  rpc LookupEcVolume (LookupEcVolumeRequest) returns (LookupEcVolumeResponse) {
  }
  rpc VacuumVolume (VacuumVolumeRequest) returns (VacuumVolumeResponse) {
  }
  rpc GetMasterConfiguration (GetMasterConfigurationRequest) returns (GetMasterConfigurationResponse) {
  }
  rpc ListClusterNodes (ListClusterNodesRequest) returns (ListClusterNodesResponse) {
  }
  rpc LeaseAdminToken (LeaseAdminTokenRequest) returns (LeaseAdminTokenResponse) {
  }
  rpc ReleaseAdminToken (ReleaseAdminTokenRequest) returns (ReleaseAdminTokenResponse) {
  }
  rpc Ping (PingRequest) returns (PingResponse) {
  }
  rpc RaftListClusterServers (RaftListClusterServersRequest) returns (RaftListClusterServersResponse) {
  }
  rpc RaftAddServer (RaftAddServerRequest) returns (RaftAddServerResponse) {
  }
  rpc RaftRemoveServer (RaftRemoveServerRequest) returns (RaftRemoveServerResponse) {
  }
}

//////////////////////////////////////////////////

message Heartbeat {
  string ip = 1;
  uint32 port = 2;
  string public_url = 3;
  uint64 max_file_key = 5;
  string data_center = 6;
  string rack = 7;
  uint32 admin_port = 8;
  repeated VolumeInformationMessage volumes = 9;
  // delta volumes
  repeated VolumeShortInformationMessage new_volumes = 10;
  repeated VolumeShortInformationMessage deleted_volumes = 11;
  bool has_no_volumes = 12;

  // erasure coding
  repeated VolumeEcShardInformationMessage ec_shards = 16;
  // delta erasure coding shards
  repeated VolumeEcShardInformationMessage new_ec_shards = 17;
  repeated VolumeEcShardInformationMessage deleted_ec_shards = 18;
  bool has_no_ec_shards = 19;

  map<string, uint32> max_volume_counts = 4;
  uint32 grpc_port = 20;

}

message HeartbeatResponse {
  uint64 volume_size_limit = 1;
  string leader = 2;
  string metrics_address = 3;
  uint32 metrics_interval_seconds = 4;
  repeated StorageBackend storage_backends = 5;
}

message VolumeInformationMessage {
  uint32 id = 1;
  uint64 size = 2;
  string collection = 3;
  uint64 file_count = 4;
  uint64 delete_count = 5;
  uint64 deleted_byte_count = 6;
  bool read_only = 7;
  uint32 replica_placement = 8;
  uint32 version = 9;
  uint32 ttl = 10;
  uint32 compact_revision = 11;
  int64 modified_at_second = 12;
  string remote_storage_name = 13;
  string remote_storage_key = 14;
  string disk_type = 15;
}

message VolumeShortInformationMessage {
  uint32 id = 1;
  string collection = 3;
  uint32 replica_placement = 8;
  uint32 version = 9;
  uint32 ttl = 10;
  string disk_type = 15;
}

message VolumeEcShardInformationMessage {
  uint32 id = 1;
  string collection = 2;
  uint32 ec_index_bits = 3;
  string disk_type = 4;
}

message StorageBackend {
  string type = 1;
  string id = 2;
  map<string, string> properties = 3;
}

message Empty {
}

message SuperBlockExtra {
  message ErasureCoding {
    uint32 data = 1;
    uint32 parity = 2;
    repeated uint32 volume_ids = 3;
  }
  ErasureCoding erasure_coding = 1;
}

message KeepConnectedRequest {
  string client_type = 1;
  string client_address = 3;
  string version = 4;
}

message VolumeLocation {
  string url = 1;
  string public_url = 2;
  repeated uint32 new_vids = 3;
  repeated uint32 deleted_vids = 4;
  string leader = 5; // optional when leader is not itself
  string data_center = 6; // optional when DataCenter is in use
  uint32 grpc_port = 7;
  repeated uint32 new_ec_vids = 8;
  repeated uint32 deleted_ec_vids = 9;
}

message ClusterNodeUpdate {
  string node_type = 1;
  string address = 2;
  bool is_leader = 3;
  bool is_add = 4;
}

message KeepConnectedResponse {
  VolumeLocation volume_location = 1;
  ClusterNodeUpdate cluster_node_update = 2;
}

message LookupVolumeRequest {
  repeated string volume_or_file_ids = 1;
  string collection = 2; // optional, a bit faster if provided.
}
message LookupVolumeResponse {
  message VolumeIdLocation {
    string volume_or_file_id = 1;
    repeated Location locations = 2;
    string error = 3;
    string auth = 4;
  }
  repeated VolumeIdLocation volume_id_locations = 1;
}

message Location {
  string url = 1;
  string public_url = 2;
  uint32 grpc_port = 3;
}

message AssignRequest {
  uint64 count = 1;
  string replication = 2;
  string collection = 3;
  string ttl = 4;
  string data_center = 5;
  string rack = 6;
  string data_node = 7;
  uint32 memory_map_max_size_mb = 8;
  uint32 Writable_volume_count = 9;
  string disk_type = 10;
}
message AssignResponse {
  string fid = 1;
  uint64 count = 4;
  string error = 5;
  string auth = 6;
  repeated Location replicas = 7;
  Location location = 8;
}

message StatisticsRequest {
  string replication = 1;
  string collection = 2;
  string ttl = 3;
  string disk_type = 4;
}
message StatisticsResponse {
  uint64 total_size = 4;
  uint64 used_size = 5;
  uint64 file_count = 6;
}

//
// collection related
//
message Collection {
  string name = 1;
}
message CollectionListRequest {
  bool include_normal_volumes = 1;
  bool include_ec_volumes = 2;
}
message CollectionListResponse {
  repeated Collection collections = 1;
}

message CollectionDeleteRequest {
  string name = 1;
}
message CollectionDeleteResponse {
}

//
// volume related
//
message DiskInfo {
  string type = 1;
  int64 volume_count = 2;
  int64 max_volume_count = 3;
  int64 free_volume_count = 4;
  int64 active_volume_count = 5;
  repeated VolumeInformationMessage volume_infos = 6;
  repeated VolumeEcShardInformationMessage ec_shard_infos = 7;
  int64 remote_volume_count = 8;
}
message DataNodeInfo {
  string id = 1;
  map<string, DiskInfo> diskInfos = 2;
  uint32 grpc_port = 3;
}
message RackInfo {
  string id = 1;
  repeated DataNodeInfo data_node_infos = 2;
  map<string, DiskInfo> diskInfos = 3;
}
message DataCenterInfo {
  string id = 1;
  repeated RackInfo rack_infos = 2;
  map<string, DiskInfo> diskInfos = 3;
}
message TopologyInfo {
  string id = 1;
  repeated DataCenterInfo data_center_infos = 2;
  map<string, DiskInfo> diskInfos = 3;
}
message VolumeListRequest {
}
message VolumeListResponse {
  TopologyInfo topology_info = 1;
  uint64 volume_size_limit_mb = 2;
}

message LookupEcVolumeRequest {
  uint32 volume_id = 1;
}
message LookupEcVolumeResponse {
  uint32 volume_id = 1;
  message EcShardIdLocation {
    uint32 shard_id = 1;
    repeated Location locations = 2;
  }
  repeated EcShardIdLocation shard_id_locations = 2;
}

message VacuumVolumeRequest {
  float garbage_threshold = 1;
  uint32 volume_id = 2;
  string collection = 3;
}
message VacuumVolumeResponse {
}

message GetMasterConfigurationRequest {
}
message GetMasterConfigurationResponse {
  string metrics_address = 1;
  uint32 metrics_interval_seconds = 2;
  repeated StorageBackend storage_backends = 3;
  string default_replication = 4;
  string leader = 5;
  uint32 volume_size_limit_m_b = 6;
  bool volume_preallocate = 7;
}

message ListClusterNodesRequest {
  string client_type = 1;
}
message ListClusterNodesResponse {
  message ClusterNode {
    string address = 1;
    string version = 2;
    bool is_leader = 3;
  }
  repeated ClusterNode cluster_nodes = 1;
}

message LeaseAdminTokenRequest {
  int64 previous_token = 1;
  int64 previous_lock_time = 2;
  string lock_name = 3;
  string client_name = 4;
  string message = 5;
}
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 {
}

message PingRequest {
  string target = 1; // default to ping itself
  string target_type = 2;
}
message PingResponse {
  int64 start_time_ns = 1;
  int64 remote_time_ns = 2;
  int64 stop_time_ns = 3;
}

message RaftAddServerRequest {
  string id = 1;
  string address = 2;
  bool voter = 3;
}
message RaftAddServerResponse {
}

message RaftRemoveServerRequest {
  string id = 1;
  bool force = 2;
}
message RaftRemoveServerResponse {
}

message RaftListClusterServersRequest {
}
message RaftListClusterServersResponse {
  message ClusterServers {
    string id = 1;
    string address = 2;
    string suffrage = 3; //
  }
  repeated ClusterServers cluster_servers = 1;
}