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Shaded protobuf protocol classes used by HBase internally.
There is a newer version: 3.0.0-beta-1
 /**
 * 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";

package hbase.pb;

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

import "HBase.proto";

enum QuotaScope {
  CLUSTER = 1;
  MACHINE = 2;
}

message TimedQuota {
  required TimeUnit time_unit = 1;
  optional uint64 soft_limit  = 2;
  optional float share = 3;
  optional QuotaScope scope  = 4 [default = MACHINE];
}

enum ThrottleType {
  REQUEST_NUMBER = 1;
  REQUEST_SIZE   = 2;
  WRITE_NUMBER   = 3;
  WRITE_SIZE     = 4;
  READ_NUMBER    = 5;
  READ_SIZE      = 6;
  REQUEST_CAPACITY_UNIT = 7;
  WRITE_CAPACITY_UNIT   = 8;
  READ_CAPACITY_UNIT    = 9;
}

message Throttle {
  optional TimedQuota req_num  = 1;
  optional TimedQuota req_size = 2;

  optional TimedQuota write_num  = 3;
  optional TimedQuota write_size = 4;

  optional TimedQuota read_num  = 5;
  optional TimedQuota read_size = 6;

  optional TimedQuota req_capacity_unit   = 7;
  optional TimedQuota write_capacity_unit = 8;
  optional TimedQuota read_capacity_unit  = 9;
}

message ThrottleRequest {
  optional ThrottleType type = 1;
  optional TimedQuota timed_quota = 2;
}

enum QuotaType {
  THROTTLE = 1;
  SPACE = 2;
}

message Quotas {
  optional bool bypass_globals = 1 [default = false];
  optional Throttle throttle = 2;
  optional SpaceQuota space = 3;
}

message QuotaUsage {
}

// Defines what action should be taken when the SpaceQuota is violated
enum SpaceViolationPolicy {
  DISABLE = 1; // Disable the table(s)
  NO_WRITES_COMPACTIONS = 2; // No writes, bulk-loads, or compactions
  NO_WRITES = 3; // No writes or bulk-loads
  NO_INSERTS = 4; // No puts or bulk-loads, but deletes are allowed
}

// Defines a limit on the amount of filesystem space used by a table/namespace
message SpaceQuota {
  optional uint64 soft_limit = 1; // The limit of bytes for this quota
  optional SpaceViolationPolicy violation_policy = 2; // The action to take when the quota is violated
  optional bool remove = 3 [default = false]; // When true, remove the quota.
}

// The Request to limit space usage (to allow for schema evolution not tied to SpaceQuota).
message SpaceLimitRequest {
  optional SpaceQuota quota = 1;
}

// Represents the state of a quota on a table. Either the quota is not in violation
// or it is in violation there is a violation policy which should be in effect.
message SpaceQuotaStatus {
  optional SpaceViolationPolicy violation_policy = 1;
  optional bool in_violation = 2;
}

// Message stored in the value of hbase:quota table to denote the status of a table WRT
// the quota applicable to it.
message SpaceQuotaSnapshot {
  optional SpaceQuotaStatus quota_status = 1;
  optional uint64 quota_usage = 2;
  optional uint64 quota_limit = 3;
}

message GetSpaceQuotaRegionSizesRequest {
}

message GetSpaceQuotaRegionSizesResponse {
  message RegionSizes {
    optional TableName table_name = 1;
    optional uint64 size = 2;

  }
  repeated RegionSizes sizes = 1;
}

message GetSpaceQuotaSnapshotsRequest {
}

message GetSpaceQuotaSnapshotsResponse {
  // Cannot use TableName as a map key, do the repeated nested message by hand.
  message TableQuotaSnapshot {
    optional TableName table_name = 1;
    optional SpaceQuotaSnapshot snapshot = 2;
  }
  repeated TableQuotaSnapshot snapshots = 1;
}

message GetQuotaStatesRequest {
}

message GetQuotaStatesResponse {
  message TableQuotaSnapshot {
    optional TableName table_name = 1;
    optional SpaceQuotaSnapshot snapshot = 2;
  }
  message NamespaceQuotaSnapshot {
    optional string namespace = 1;
    optional SpaceQuotaSnapshot snapshot = 2;
  }
  repeated TableQuotaSnapshot table_snapshots = 1;
  repeated NamespaceQuotaSnapshot ns_snapshots = 2;
}