// 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 = "proto3";

import "csi.proto";

package mesos.csi.state;


// Represents the state of a provisioned volume with respect to a node.
message VolumeState {
  enum State {
    UNKNOWN = 0;
    CREATED = 1;              // The volume is provisioned but not published.
    NODE_READY = 2;           // The volume is attached to the node.
    PUBLISHED =  3;           // The volume is mounted on the node.
    CONTROLLER_PUBLISH = 4;   // `ControllerPublishVolume` is being called.
    CONTROLLER_UNPUBLISH = 5; // `ControllerUnpublishVolume` is being called.
    NODE_PUBLISH = 6;         // `NodePublishVolume` is being called.
    NODE_UNPUBLISH = 7;       // `NodeUnpublishVolume` is being called.
  }

  // The state of the volume. This is a REQUIRED field.
  State state = 1;

  // The capability used to publish the volume. This is a
  // REQUIRED field.
  .csi.VolumeCapability volume_capability = 2;

  // Attributes of the volume to be used on the node. This field MUST
  // match the attributes of the `VolumeInfo` returned by
  // `CreateVolume`. This is an OPTIONAL field.
  map<string, string> volume_attributes = 3;

  // If the plugin has the `PUBLISH_UNPUBLISH_VOLUME` controller
  // capability, this field MUST be set to the value returned by
  // `ControllerPublishVolume`. Otherwise, this field MUST remain unset.
  // This is an OPTIONAL field.
  map<string, string> publish_volume_info = 4;

  // This field is used to check if the node has been rebooted since the
  // last time the volume is mounted. If yes, `NodePublishVolume` needs
  // to be called to mount the volume again. It MUST be set to the boot
  // ID of the node if the volume is mounted, and SHOULD remain unset
  // otherwise. This is an OPTIONAL field.
  string boot_id = 5;
}