HDFS-11127. Block Storage : add block storage service protocol. Contributed by Chen Liang

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Anu Engineer 2016-11-11 09:59:58 -08:00 committed by Owen O'Malley
parent 8274ff356a
commit 3d83ee25c5
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/**
* 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.
*/
/**
* These .proto interfaces are private and unstable.
* Please see http://wiki.apache.org/hadoop/Compatibility
* for what changes are allowed for a *unstable* .proto interface.
*/
option java_package = "org.apache.hadoop.cblock.protocol.proto";
option java_outer_classname = "CBlockServiceProtocolProtos";
option java_generic_services = true;
option java_generate_equals_and_hash = true;
package hadoop.cblock;
/**
* This message is sent to CBlock server to create a volume. Creating
* volume requries four parameters: owner of the volume, name of the volume
* size of volume and block size of the volume.
*/
message CreateVolumeRequestProto {
required string userName = 1;
required string volumeName = 2;
required uint64 volumeSize = 3;
optional uint32 blockSize = 4 [default = 4096];
}
/**
* Empty response message.
*/
message CreateVolumeResponseProto {
}
/**
* This message is sent to CBlock server to delete a volume. The volume
* is specified by owner name and volume name. If force is set to
* false, volume will be deleted only if it is empty. Otherwise delete it
* regardless.
*/
message DeleteVolumeRequestProto {
required string userName = 1;
required string volumeName = 2;
optional bool force = 3;
}
/**
* Empty response message.
*/
message DeleteVolumeResponseProto {
}
/**
* This message is sent to CBlock server to request info of a volume. The
* volume is specified by owner name and volume name.
*/
message InfoVolumeRequestProto {
required string userName = 1;
required string volumeName = 2;
}
/**
* This message describes the information of a volume.
* Currently, the info includes the volume creation parameters and a number
* as the usage of the volume, in terms of number of bytes.
*/
message VolumeInfoProto {
required string userName = 1;
required string volumeName = 2;
required uint64 volumeSize = 3;
required uint64 blockSize = 4;
optional uint64 usage = 5;
// TODO : potentially volume ACL
}
/**
* This message is sent from CBlock server as response of info volume request.
*/
message InfoVolumeResponseProto {
optional VolumeInfoProto volumeInfo = 1;
}
/**
* This message is sent to CBlock server to list all available volume.
*/
message ListVolumeRequestProto {
optional string userName = 1;
}
/**
* This message is sent from CBlock server as response of volume listing.
*/
message ListVolumeResponseProto {
repeated VolumeInfoProto volumeEntry = 1;
}
service CBlockServiceProtocolService {
/**
* Create a volume.
*/
rpc createVolume(CreateVolumeRequestProto) returns(CreateVolumeResponseProto);
/**
* Delete a volume.
*/
rpc deleteVolume(DeleteVolumeRequestProto) returns(DeleteVolumeResponseProto);
/**
* Get info of a volume.
*/
rpc infoVolume(InfoVolumeRequestProto) returns(InfoVolumeResponseProto);
/**
* List all available volumes.
*/
rpc listVolume(ListVolumeRequestProto) returns(ListVolumeResponseProto);
}