syntax = "proto3";
package milvus.proto.rootcoord;

option go_package="github.com/milvus-io/milvus/pkg/proto/rootcoordpb";

import "common.proto";
import "milvus.proto";
import "internal.proto";
import "proxy.proto";
import "etcd_meta.proto";

service RootCoord {
  rpc GetComponentStates(milvus.GetComponentStatesRequest) returns (milvus.ComponentStates) {}
  rpc GetTimeTickChannel(internal.GetTimeTickChannelRequest) returns(milvus.StringResponse) {}
  rpc GetStatisticsChannel(internal.GetStatisticsChannelRequest) returns(milvus.StringResponse){}
    /**
     * @brief This method is used to create collection
     *
     * @param CreateCollectionRequest, use to provide collection information to be created.
     *
     * @return Status
     */
    rpc CreateCollection(milvus.CreateCollectionRequest) returns (common.Status){}

    /**
     * @brief This method is used to delete collection.
     *
     * @param DropCollectionRequest, collection name is going to be deleted.
     *
     * @return Status
     */
    rpc DropCollection(milvus.DropCollectionRequest) returns (common.Status) {}

    /**
     * @brief This method is used to test collection existence.
     *
     * @param HasCollectionRequest, collection name is going to be tested.
     *
     * @return BoolResponse
     */
    rpc HasCollection(milvus.HasCollectionRequest) returns (milvus.BoolResponse) {}

    /**
     * @brief This method is used to get collection schema.
     *
     * @param DescribeCollectionRequest, target collection name.
     *
     * @return CollectionSchema
     */
    rpc DescribeCollection(milvus.DescribeCollectionRequest) returns (milvus.DescribeCollectionResponse) {}
    rpc DescribeCollectionInternal(milvus.DescribeCollectionRequest) returns (milvus.DescribeCollectionResponse) {}

    rpc CreateAlias(milvus.CreateAliasRequest) returns (common.Status) {}
    rpc DropAlias(milvus.DropAliasRequest) returns (common.Status) {}
    rpc AlterAlias(milvus.AlterAliasRequest) returns (common.Status) {}
    rpc DescribeAlias(milvus.DescribeAliasRequest) returns (milvus.DescribeAliasResponse) {}
    rpc ListAliases(milvus.ListAliasesRequest) returns (milvus.ListAliasesResponse) {}

    /**
     * @brief This method is used to list all collections.
     *
     * @return StringListResponse, collection name list
     */
    rpc ShowCollections(milvus.ShowCollectionsRequest) returns (milvus.ShowCollectionsResponse) {}

    rpc ShowCollectionIDs(ShowCollectionIDsRequest) returns (ShowCollectionIDsResponse) {}

    rpc AlterCollection(milvus.AlterCollectionRequest) returns (common.Status) {}
    
    rpc AlterCollectionField(milvus.AlterCollectionFieldRequest) returns (common.Status) {}
  /**
   * @brief This method is used to create partition
   *
   * @return Status
   */
    rpc CreatePartition(milvus.CreatePartitionRequest) returns (common.Status) {}

    /**
     * @brief This method is used to drop partition
     *
     * @return Status
     */
    rpc DropPartition(milvus.DropPartitionRequest) returns (common.Status) {}

    /**
     * @brief This method is used to test partition existence.
     *
     * @return BoolResponse
     */
    rpc HasPartition(milvus.HasPartitionRequest) returns (milvus.BoolResponse) {}

    /**
     * @brief This method is used to show partition information
     *
     * @param ShowPartitionRequest, target collection name.
     *
     * @return StringListResponse
     */
    rpc ShowPartitions(milvus.ShowPartitionsRequest) returns (milvus.ShowPartitionsResponse) {}
    rpc ShowPartitionsInternal(milvus.ShowPartitionsRequest) returns (milvus.ShowPartitionsResponse) {}

//    rpc DescribeSegment(milvus.DescribeSegmentRequest) returns (milvus.DescribeSegmentResponse) {}
    rpc ShowSegments(milvus.ShowSegmentsRequest) returns (milvus.ShowSegmentsResponse) {}
//    rpc DescribeSegments(DescribeSegmentsRequest) returns (DescribeSegmentsResponse) {}

//    rpc CreateIndex(milvus.CreateIndexRequest) returns (common.Status) {}
//    rpc DescribeIndex(milvus.DescribeIndexRequest) returns (milvus.DescribeIndexResponse) {}
//    rpc DropIndex(milvus.DropIndexRequest) returns (common.Status) {}
//    rpc GetIndexState(milvus.GetIndexStateRequest) returns (milvus.GetIndexStateResponse) {}

    rpc AllocTimestamp(AllocTimestampRequest) returns (AllocTimestampResponse) {}
    rpc AllocID(AllocIDRequest) returns (AllocIDResponse) {}
    rpc UpdateChannelTimeTick(internal.ChannelTimeTickMsg) returns (common.Status) {}
    rpc InvalidateCollectionMetaCache(proxy.InvalidateCollMetaCacheRequest) returns (common.Status) {}
//    rpc SegmentFlushCompleted(data.SegmentFlushCompletedMsg) returns (common.Status) {}

    rpc ShowConfigurations(internal.ShowConfigurationsRequest) returns (internal.ShowConfigurationsResponse){}
    // https://wiki.lfaidata.foundation/display/MIL/MEP+8+--+Add+metrics+for+proxy
    rpc GetMetrics(milvus.GetMetricsRequest) returns (milvus.GetMetricsResponse) {}

    // https://wiki.lfaidata.foundation/display/MIL/MEP+27+--+Support+Basic+Authentication
    rpc CreateCredential(internal.CredentialInfo) returns (common.Status) {}
    rpc UpdateCredential(internal.CredentialInfo) returns (common.Status) {}
    rpc DeleteCredential(milvus.DeleteCredentialRequest) returns (common.Status) {}
    rpc ListCredUsers(milvus.ListCredUsersRequest) returns (milvus.ListCredUsersResponse) {}
    // userd by proxy, not exposed to sdk
    rpc GetCredential(GetCredentialRequest) returns (GetCredentialResponse) {}

    // https://wiki.lfaidata.foundation/display/MIL/MEP+29+--+Support+Role-Based+Access+Control
    rpc CreateRole(milvus.CreateRoleRequest) returns (common.Status) {}
    rpc DropRole(milvus.DropRoleRequest) returns (common.Status) {}
    rpc OperateUserRole(milvus.OperateUserRoleRequest) returns (common.Status) {}
    rpc SelectRole(milvus.SelectRoleRequest) returns (milvus.SelectRoleResponse) {}
    rpc SelectUser(milvus.SelectUserRequest) returns (milvus.SelectUserResponse) {}
    rpc OperatePrivilege(milvus.OperatePrivilegeRequest) returns (common.Status) {}
    rpc SelectGrant(milvus.SelectGrantRequest) returns (milvus.SelectGrantResponse) {}
    rpc ListPolicy(internal.ListPolicyRequest) returns (internal.ListPolicyResponse) {}
    rpc BackupRBAC(milvus.BackupRBACMetaRequest) returns (milvus.BackupRBACMetaResponse){}
    rpc RestoreRBAC(milvus.RestoreRBACMetaRequest) returns (common.Status){}
    rpc CreatePrivilegeGroup(milvus.CreatePrivilegeGroupRequest) returns (common.Status) {}
    rpc DropPrivilegeGroup(milvus.DropPrivilegeGroupRequest) returns (common.Status) {}
    rpc ListPrivilegeGroups(milvus.ListPrivilegeGroupsRequest) returns (milvus.ListPrivilegeGroupsResponse) {}
    rpc OperatePrivilegeGroup(milvus.OperatePrivilegeGroupRequest) returns (common.Status) {}

    rpc CheckHealth(milvus.CheckHealthRequest) returns (milvus.CheckHealthResponse) {}

    rpc RenameCollection(milvus.RenameCollectionRequest) returns (common.Status) {}

    rpc CreateDatabase(milvus.CreateDatabaseRequest) returns (common.Status) {}
    rpc DropDatabase(milvus.DropDatabaseRequest) returns (common.Status) {}
    rpc ListDatabases(milvus.ListDatabasesRequest) returns (milvus.ListDatabasesResponse) {}
    rpc DescribeDatabase(DescribeDatabaseRequest) returns(DescribeDatabaseResponse){}
    rpc AlterDatabase(AlterDatabaseRequest) returns(common.Status){}
}

message AllocTimestampRequest {
  common.MsgBase base = 1;
  uint32 count = 3;
}

message AllocTimestampResponse {
    common.Status status = 1;
    uint64 timestamp = 2;
    uint32 count = 3;
}

message AllocIDRequest {
  common.MsgBase base = 1;
  uint32 count = 2;
}

message AllocIDResponse {
  common.Status status = 1;
  int64 ID = 2;
  uint32 count = 3;
}

// TODO: find a proper place for these segment-related messages.

message DescribeSegmentsRequest {
  common.MsgBase base = 1;
  int64 collectionID = 2;
  repeated int64 segmentIDs = 3;
}

message SegmentBaseInfo {
  int64 collectionID = 1; // in which collection.
  int64 partitionID = 2;  // in which partition.
  int64 segmentID = 3;
}

message SegmentInfos {
  SegmentBaseInfo base_info = 1;                    // base information.
  repeated etcd.SegmentIndexInfo index_infos = 2;   // multiple index infos.
  map<int64, etcd.IndexInfo> extra_index_infos = 3; // index_id -> IndexInfo{index_name, index_id, index_params}
}

message DescribeSegmentsResponse {
  common.Status status = 1;
  int64 collectionID = 2;
  map<int64, SegmentInfos> segment_infos = 3; // segment_id -> segment infos
}

message GetCredentialRequest {
  // Not useful for now
  common.MsgBase base = 1;
  // username
  string username = 2;
}

message GetCredentialResponse {
  // Contain error_code and reason
  common.Status status = 1;
  // username
  string username = 2;
  // password stored in etcd/mysql
  string password = 3;
}

message DescribeDatabaseRequest {
  common.MsgBase base = 1;
  string db_name = 2;
}

message DescribeDatabaseResponse {
  common.Status status = 1;
  string db_name = 2;
  int64 dbID = 3;
  uint64 created_timestamp = 4;
  repeated common.KeyValuePair properties = 5;
}

message AlterDatabaseRequest {
  common.MsgBase base = 1;
  string db_name = 2;
  string db_id = 3;
  repeated common.KeyValuePair properties = 4;
  repeated string delete_keys = 5;
}

message ShowCollectionIDsRequest {
  common.MsgBase base = 1;
  repeated string db_names = 2;
  bool allowUnavailable = 3;
}

message DBCollections {
 string db_name = 1;
 repeated int64 collectionIDs = 2;
}

message ShowCollectionIDsResponse {
  common.Status status = 1;
  repeated DBCollections db_collections = 2;
}