/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
syntax = "proto2";
// This file contains protocol buffers that are used for Admin service.
package hbase.pb;

option java_package = "org.apache.hadoop.hbase.shaded.protobuf.generated";
option java_outer_classname = "AdminProtos";
option java_generic_services = true;
option java_generate_equals_and_hash = true;
option optimize_for = SPEED;

import "ClusterStatus.proto";
import "HBase.proto";
import "WAL.proto";
import "Quota.proto";

message GetRegionInfoRequest {
  required RegionSpecifier region = 1;
  optional bool compaction_state = 2;
  optional bool best_split_row = 3;
}

message GetRegionInfoResponse {
  required RegionInfo region_info = 1;
  optional CompactionState compaction_state = 2;
  // optional bool DEPRECATED_isRecovering = 3;
  // True if region is splittable, false otherwise.
  optional bool splittable = 4;
  // True if region is mergeable, false otherwise.
  optional bool mergeable = 5;
  // Get bestSplitRow
  optional bytes best_split_row = 6;

  enum CompactionState {
    NONE = 0;
    MINOR = 1;
    MAJOR = 2;
    MAJOR_AND_MINOR = 3;
  }
}

/**
 * Get a list of store files for a set of column families in a particular region.
 * If no column family is specified, get the store files for all column families.
 */
message GetStoreFileRequest {
  required RegionSpecifier region = 1;
  repeated bytes family = 2;
}

message GetStoreFileResponse {
  repeated string store_file = 1;
}

message GetOnlineRegionRequest {
}

message GetOnlineRegionResponse {
  repeated RegionInfo region_info = 1;
}

message OpenRegionRequest {
  repeated RegionOpenInfo open_info = 1;
  // the intended server for this RPC.
  optional uint64 serverStartCode = 2;
  // wall clock time from master
  optional uint64 master_system_time = 5;

  message RegionOpenInfo {
    required RegionInfo region = 1;
    optional uint32 version_of_offline_node = 2;
    repeated ServerName favored_nodes = 3;
    // open region for distributedLogReplay
    // optional bool DEPRECATED_openForDistributedLogReplay = 4;
    optional int64 open_proc_id = 5 [default = -1];
  }
}

message OpenRegionResponse {
  repeated RegionOpeningState opening_state = 1;

  enum RegionOpeningState {
    OPENED = 0;
    ALREADY_OPENED = 1;
    FAILED_OPENING = 2;
  }
}

message WarmupRegionRequest {
    required RegionInfo regionInfo = 1;
}

message WarmupRegionResponse {
}

/**
 * Closes the specified region and will use or not use ZK during the close
 * according to the specified flag.
 */
message CloseRegionRequest {
  required RegionSpecifier region = 1;
  optional uint32 version_of_closing_node = 2;
  optional bool transition_in_ZK = 3 [default = true];
  optional ServerName destination_server = 4;
  // the intended server for this RPC.
  optional uint64 serverStartCode = 5;
  optional int64 close_proc_id = 6 [default = -1];
}

message CloseRegionResponse {
  required bool closed = 1;
}

/**
 * Flushes the MemStore of the specified region.
 * <p>
 * This method is synchronous.
 */
message FlushRegionRequest {
  required RegionSpecifier region = 1;
  optional uint64 if_older_than_ts = 2;
  optional bool write_flush_wal_marker = 3; // whether to write a marker to WAL even if not flushed
}

message FlushRegionResponse {
  required uint64 last_flush_time = 1;
  optional bool flushed = 2;
  optional bool wrote_flush_wal_marker = 3;
}

/**
 * Compacts the specified region.  Performs a major compaction if specified.
 * <p>
 * This method is asynchronous.
 */
message CompactRegionRequest {
  required RegionSpecifier region = 1;
  optional bool major = 2;
  optional bytes family = 3;
}

message CompactRegionResponse {
}

message CompactionSwitchRequest {
  required bool enabled = 1;
}

message CompactionSwitchResponse {
  required bool prev_state = 1;
}

message UpdateFavoredNodesRequest {
  repeated RegionUpdateInfo update_info = 1;

  message RegionUpdateInfo {
    required RegionInfo region = 1;
    repeated ServerName favored_nodes = 2;
  }
}

message UpdateFavoredNodesResponse {
  optional uint32 response = 1;
}

// Protocol buffer version of WAL for replication
message WALEntry {
  required WALKey key = 1;
  // Following may be null if the KVs/Cells are carried along the side in a cellblock (See
  // RPC for more on cellblocks). If Cells/KVs are in a cellblock, this next field is null
  // and associated_cell_count has count of Cells associated w/ this WALEntry
  repeated bytes key_value_bytes = 2;
  // If Cell data is carried alongside in a cellblock, this is count of Cells in the cellblock.
  optional int32 associated_cell_count = 3;
}

/**
 * Replicates the given entries. The guarantee is that the given entries
 * will be durable on the slave cluster if this method returns without
 * any exception.
 */
message ReplicateWALEntryRequest {
  repeated WALEntry entry = 1;
  optional string replicationClusterId = 2;
  optional string sourceBaseNamespaceDirPath = 3;
  optional string sourceHFileArchiveDirPath = 4;
}

message ReplicateWALEntryResponse {
}

message RollWALWriterRequest {
}

/*
 * Roll request responses no longer include regions to flush
 * this list will always be empty when talking to a 1.0 server
 */
message RollWALWriterResponse {
  // A list of encoded name of regions to flush
  repeated bytes region_to_flush = 1;
}

message StopServerRequest {
  required string reason = 1;
}

message StopServerResponse {
}

message GetServerInfoRequest {
}

message ServerInfo {
  required ServerName server_name = 1;
  optional uint32 webui_port = 2;
}

message GetServerInfoResponse {
  required ServerInfo server_info = 1;
}

message UpdateConfigurationRequest {
}

message UpdateConfigurationResponse {
}

message GetRegionLoadRequest {
  optional TableName table_name = 1;
}

message GetRegionLoadResponse {
  repeated RegionLoad region_loads = 1;
}

message ClearCompactionQueuesRequest {
  repeated string queue_name = 1;
}

message ClearCompactionQueuesResponse {
}

message ClearRegionBlockCacheRequest {
  repeated RegionSpecifier region = 1;
}

message ClearRegionBlockCacheResponse {
  required CacheEvictionStats stats = 1;
}

message RemoteProcedureRequest {
  required uint64 proc_id = 1;
  required string proc_class = 2;
  optional bytes proc_data = 3;
}

message ExecuteProceduresRequest {
  repeated OpenRegionRequest open_region = 1;
  repeated CloseRegionRequest close_region = 2;
  repeated RemoteProcedureRequest proc = 3;
}

message ExecuteProceduresResponse {
}

service AdminService {
  rpc GetRegionInfo(GetRegionInfoRequest)
    returns(GetRegionInfoResponse);

  rpc GetStoreFile(GetStoreFileRequest)
    returns(GetStoreFileResponse);

  rpc GetOnlineRegion(GetOnlineRegionRequest)
    returns(GetOnlineRegionResponse);

  rpc OpenRegion(OpenRegionRequest)
    returns(OpenRegionResponse);

  rpc WarmupRegion(WarmupRegionRequest)
    returns(WarmupRegionResponse);

  rpc CloseRegion(CloseRegionRequest)
    returns(CloseRegionResponse);

  rpc FlushRegion(FlushRegionRequest)
    returns(FlushRegionResponse);

  rpc CompactionSwitch(CompactionSwitchRequest)
    returns(CompactionSwitchResponse);

  rpc CompactRegion(CompactRegionRequest)
    returns(CompactRegionResponse);

  rpc ReplicateWALEntry(ReplicateWALEntryRequest)
    returns(ReplicateWALEntryResponse);

  rpc Replay(ReplicateWALEntryRequest)
    returns(ReplicateWALEntryResponse);

  rpc RollWALWriter(RollWALWriterRequest)
    returns(RollWALWriterResponse);

  rpc GetServerInfo(GetServerInfoRequest)
    returns(GetServerInfoResponse);

  rpc StopServer(StopServerRequest)
    returns(StopServerResponse);

  rpc UpdateFavoredNodes(UpdateFavoredNodesRequest)
    returns(UpdateFavoredNodesResponse);

  rpc UpdateConfiguration(UpdateConfigurationRequest)
    returns(UpdateConfigurationResponse);

  rpc GetRegionLoad(GetRegionLoadRequest)
    returns(GetRegionLoadResponse);

  rpc ClearCompactionQueues(ClearCompactionQueuesRequest)
    returns(ClearCompactionQueuesResponse);

  rpc ClearRegionBlockCache(ClearRegionBlockCacheRequest)
    returns(ClearRegionBlockCacheResponse);

  /** Fetches the RegionServer's view of space quotas */
  rpc GetSpaceQuotaSnapshots(GetSpaceQuotaSnapshotsRequest)
    returns(GetSpaceQuotaSnapshotsResponse);

  rpc ExecuteProcedures(ExecuteProceduresRequest)
    returns(ExecuteProceduresResponse);
}