syntax = "proto3";

import "google/protobuf/timestamp.proto";

package openstorage.api;

option go_package = "api";
option java_multiple_files = true;
option java_package = "com.openstorage.api";

enum Status {
  STATUS_NONE = 0;
  STATUS_INIT = 1;
  STATUS_OK = 2;
  STATUS_OFFLINE = 3;
  STATUS_ERROR = 4;
  STATUS_NOT_IN_QUORUM = 5;
  STATUS_DECOMMISSION = 6;
  STATUS_MAINTENANCE = 7;
  STATUS_STORAGE_DOWN = 8;
  STATUS_STORAGE_DEGRADED = 9;
  STATUS_NEEDS_REBOOT = 10;
  STATUS_STORAGE_REBALANCE = 11;
  STATUS_STORAGE_DRIVE_REPLACE = 12;
  // Add statuses before MAX and update the number for MAX
  STATUS_MAX = 13;
}

enum DriverType {
  DRIVER_TYPE_NONE = 0;
  DRIVER_TYPE_FILE = 1;
  DRIVER_TYPE_BLOCK = 2;
  DRIVER_TYPE_OBJECT = 3;
  DRIVER_TYPE_CLUSTERED = 4;
  DRIVER_TYPE_GRAPH = 5;
}

enum FSType {
  FS_TYPE_NONE = 0;
  FS_TYPE_BTRFS = 1;
  FS_TYPE_EXT4 = 2;
  FS_TYPE_FUSE = 3;
  FS_TYPE_NFS = 4;
  FS_TYPE_VFS = 5;
  FS_TYPE_XFS = 6;
  FS_TYPE_ZFS = 7;
}

enum GraphDriverChangeType {
  GRAPH_DRIVER_CHANGE_TYPE_NONE = 0;
  GRAPH_DRIVER_CHANGE_TYPE_MODIFIED = 1;
  GRAPH_DRIVER_CHANGE_TYPE_ADDED = 2;
  GRAPH_DRIVER_CHANGE_TYPE_DELETED = 3;
}

enum SeverityType {
  SEVERITY_TYPE_NONE = 0;
  SEVERITY_TYPE_ALARM = 1;
  SEVERITY_TYPE_WARNING = 2;
  SEVERITY_TYPE_NOTIFY = 3;
}

enum ResourceType {
  RESOURCE_TYPE_NONE = 0;
  RESOURCE_TYPE_VOLUME = 1;
  RESOURCE_TYPE_NODE = 2;
  RESOURCE_TYPE_CLUSTER = 3;
  RESOURCE_TYPE_DRIVE = 4;
}

enum AlertActionType {
  ALERT_ACTION_TYPE_NONE = 0;
  ALERT_ACTION_TYPE_DELETE = 1;
  ALERT_ACTION_TYPE_CREATE = 2;
  ALERT_ACTION_TYPE_UPDATE = 3;
}

enum VolumeActionParam {
  VOLUME_ACTION_PARAM_NONE = 0;
  // Maps to the boolean value false
  VOLUME_ACTION_PARAM_OFF = 1;
  // Maps to the boolean value true.
  VOLUME_ACTION_PARAM_ON = 2;
}

enum CosType {
  NONE = 0;
  LOW = 1;
  MEDIUM = 2;
  HIGH = 3;
}

enum IoProfile {
  IO_PROFILE_SEQUENTIAL = 0;
  IO_PROFILE_RANDOM= 1;
  IO_PROFILE_DB = 2;
  IO_PROFILE_DB_REMOTE = 3;
}

// VolumeState represents the state of a volume.
enum VolumeState {
  VOLUME_STATE_NONE = 0;
  // Volume is transitioning to new state
  VOLUME_STATE_PENDING = 1;
  // Volume is ready to be assigned to a container
  VOLUME_STATE_AVAILABLE = 2;
  // Volume is attached to container
  VOLUME_STATE_ATTACHED = 3;
  // Volume is detached but associated with a container
  VOLUME_STATE_DETACHED = 4;
  // Volume detach is in progress
  VOLUME_STATE_DETATCHING = 5;
  // Volume is in error state
  VOLUME_STATE_ERROR = 6;
  // Volume is deleted, it will remain in this state
  // while resources are asynchronously reclaimed
  VOLUME_STATE_DELETED = 7;
  // Volume is trying to be detached
  VOLUME_STATE_TRY_DETACHING = 8;
  // Volume is undergoing restore
  VOLUME_STATE_RESTORE = 9;
}

// VolumeStatus represents a health status for a volume.
enum VolumeStatus {
  VOLUME_STATUS_NONE = 0;
  // Volume is not present
  VOLUME_STATUS_NOT_PRESENT = 1;
  // Volume is healthy
  VOLUME_STATUS_UP = 2;
  // Volume is in fail mode
  VOLUME_STATUS_DOWN = 3;
  // Volume is up but with degraded performance
  // In a RAID group, this may indicate a problem with one or more drives
  VOLUME_STATUS_DEGRADED = 4;
}

enum StorageMedium {
  // Magnetic spinning disk.
  STORAGE_MEDIUM_MAGNETIC = 0;
  // SSD disk
  STORAGE_MEDIUM_SSD = 1;
  // NVME disk
  STORAGE_MEDIUM_NVME = 2;
}

enum ClusterNotify {
 // Node is down
 CLUSTER_NOTIFY_DOWN = 0;
}

enum AttachState {
    // Attached and available externally
    ATTACH_STATE_EXTERNAL = 0;
    // Attached but only available internally
    ATTACH_STATE_INTERNAL = 1;
    // Switching from External to Internal
    ATTACH_STATE_INTERNAL_SWITCH = 2;
}

// StorageResource groups properties of a storage device.
message StorageResource {
  // Id is the LUN identifier.
  string id = 1;
  // Path device path for this storage resource.
  string path = 2;
  // Storage medium.
  StorageMedium medium = 3;
  // True if this device is online.
  bool online = 4;;
  // IOPS
  uint64 iops = 5;;
  // SeqWrite
  double seq_write = 6;
  // SeqRead
  double seq_read = 7;
  // RandRW
  double randRW  = 8;
  // Total size in bytes.
  uint64 size = 9;;
  // Physical Bytes used.
  uint64 used = 10;
  // True if this device is rotational.
  string rotation_speed = 11;
  // Timestamp of last time this device was scanned.
  google.protobuf.Timestamp last_scan = 12;
}

// StoragePool groups different storage devices based on their CosType
message StoragePool {
  // ID pool ID
  int32 ID = 1;
  // Cos reflects the capabilities of this drive pool
  CosType Cos = 2;
  // Medium underlying storage type
  StorageMedium Medium = 3;
  // RaidLevel storage raid level
  string RaidLevel = 4;
  // TotalSize of the pool
  uint64 TotalSize = 7;
  // Used size of the pool
  uint64 Used = 8;
  // Labels is a list of user defined name-value pairs
  map<string, string> labels = 9;
}

// VolumeLocator is a structure that is attached to a volume
// and is used to carry opaque metadata.
message VolumeLocator {
  // User friendly identifier
  string name = 1;
  // A set of name-value pairs that acts as search filters
  map<string, string> volume_labels = 2;
}

message Source {
  // A volume id, if specified will create a clone of the parent.
  string parent = 1;
  // Seed will seed the volume from the specified URI
  // Any additional config for the source comes from the labels in the spec
  string seed = 2;
}

message Group {
  // Id common identifier across volumes that have the same group.
  string id = 1;
}

// VolumeSpec has the properties needed to create a volume.
message VolumeSpec {
  // Ephemeral storage
  bool ephemeral = 1;
  // Size specifies the thin provisioned volume size.
  uint64 size = 2;
  // Format specifies the filesystem for this volume.
  FSType format = 3;
  // BlockSize for the filesystem.
  int64 block_size = 4;
  // HaLevel specifies the number of copies of data.
  int64 ha_level = 5;
  // Cos specifies the relative class of service.
  CosType cos = 6;
  // IoProfile provides a hint about application using this volume.
  IoProfile io_profile = 7;
  // Dedupe specifies if the volume data is to be de-duplicated.
  bool dedupe = 8;
  // SnapshotInterval in minutes, set to 0 to disable snapshots
  uint32 snapshot_interval = 9;
  // VolumeLabels configuration labels
  map<string, string> volume_labels = 10;
  // Shared is true if this volume can be remotely accessed.
  bool shared = 11;
  // ReplicaSet is the desired set of nodes for the volume data.
  ReplicaSet replica_set = 12;
  // Aggregatiokn level Specifies the number of parts the volume can be aggregated from.
  uint32 aggregation_level = 13;
  // Encrypted is true if this volume will be cryptographically secured.
  bool encrypted = 14;
  // Passphrase for an encrypted volume
  string passphrase = 15;
  // SnapshotSchedule a well known string that specifies when snapshots should be taken. 
  string snapshot_schedule = 16;
  // Scale allows autocreation of volumes.
  uint32 scale = 17;
  // Sticky volumes cannot be deleted until the flag is removed.
  bool sticky = 18;
  // Group identifies a consistency group
  Group group = 21;
  // GroupEnforced is true if consistency group creation is enforced.
  bool group_enforced = 22;
  // Compressed is true if this volume is to be compressed.
  bool compressed = 23;
}

// ReplicaSet set of machine IDs (nodes) to which part of this volume is erasure 
// coded - for clustered storage arrays
message ReplicaSet {
  repeated string nodes = 1;
}

// RuntimeStateMap is a list of name value mapping of driver specific runtime 
// information.
message RuntimeStateMap {
  map<string, string> runtime_state = 1;
}

// Volume represents an abstract storage volume.
// Volume represents an abstract storage volume.
message Volume {
  // Self referential volume ID.
  string id = 1;
  // Source specified seed data for the volume.
  Source source = 2;
  // Group volumes in the same group have the same group id.
  Group group = 3;
  // Readonly is true if this volume is to be mounted with readonly access.
  bool readonly = 4;
  // User specified locator
  VolumeLocator locator = 5;
  // Volume creation time
  google.protobuf.Timestamp ctime = 6;
  // User specified VolumeSpec
  VolumeSpec spec = 7;
  // Usage is bytes consumed by vtheis volume.
  uint64 usage = 8;
  // LastScan is the time when an integrity check was run.
  google.protobuf.Timestamp last_scan = 9;
  // Format specifies the filesytem for this volume.
  FSType format = 10;
  // Status is the availability status of this volume.
  VolumeStatus status = 11;
  // State is the current runtime state of this volume.
  VolumeState state = 12;
  // AttachedOn is the node instance identifier for clustered systems.
  string attached_on = 13;
  // AttachedState shows whether the device is attached for internal or external use.
  AttachState attached_state = 14;
  // DevicePath is the device exported by block device implementations.
  string device_path = 15;
  // SecureDevicePath is the device path for an encrypted volume.
  string secure_device_path = 16;
  // AttachPath is the mounted path in the host namespace.
  repeated string attach_path = 17;
  // AttachInfo is a list of name value mappings that provides attach information.
  map<string, string> attach_info = 18;
  // ReplicatSets storage for this volumefor clustered storage arrays.
  repeated ReplicaSet replica_sets = 19;
  // RuntimeState is a lst of name value mapping of driver specific runtime 
  // information.
  repeated RuntimeStateMap runtime_state = 20;
  // Error is the Last recorded error.
  string error = 21;
}

message Stats {
  // Reads completed successfully
  uint64 reads = 1;
  // Time spent in reads in ms
  uint64 read_ms = 2;
  uint64 read_bytes = 3;
  // Writes completed successfully
  uint64 writes = 4;
  // Time spent in writes in ms
  uint64 write_ms = 5;
  uint64 write_bytes = 6;
  // IOs curently in progress
  uint64 io_progress = 7;
  // Time spent doing IOs ms
  uint64 io_ms = 8;
  // BytesUsed
  uint64 bytes_used = 9;
  // Interval in ms during which stats were collected
  uint64 interval_ms = 10;
}

message Alert {
  // Id for Alert
  int64 id = 1;
  // Severity of the Alert
  SeverityType severity = 2;
  // AlertType user defined alert type
  int64 alert_type = 3;
  // Message describing the Alert
  string message = 4;
  //Timestamp when Alert occured
  google.protobuf.Timestamp timestamp = 5;	
  // ResourceId where Alert occured
  string resource_id = 6;
  // Resource where Alert occured
  ResourceType resource = 7;
  // Cleared Flag
  bool cleared = 8;
  // TTL in seconds for this Alert
  uint64 ttl = 9;
  // UniqueTag helps identify a unique alert for a given resouce
  string unique_tag = 10;
}

message Alerts {
  repeated Alert alert = 1;
}

message VolumeCreateRequest {
  // User specified volume name and labels
  VolumeLocator locator = 1;
  // Source to create volume
  Source source = 2;
  // The storage spec for the volume
  VolumeSpec spec = 3;
}

message VolumeResponse {
  string error = 1;
}

message VolumeCreateResponse {
  // ID of the newly created volume
  string id = 1;
  VolumeResponse volume_response = 2;
}

// VolumeStateAction specifies desired actions.
message VolumeStateAction {
  // Attach or Detach volume
  VolumeActionParam attach = 1;
  // Mount or unmount volume
  VolumeActionParam mount = 2;
  // MountPath Path where the device is mounted
  string mount_path = 3;
  // DevicePath Path returned in attach
  string device_path = 4;
  // UnmountBeforeDetach is used to check whether unmount should be done before
  // a detach
  bool unmount_before_detach = 5;
}

message VolumeSetRequest {
  // User specified volume name and labels
  VolumeLocator locator = 1;
  // The storage spec for the volume
  VolumeSpec spec = 2;
  // State modification on this volume.
  VolumeStateAction action = 3;
  // additional options
  // required for the Set operation.
  map<string, string> options = 4;
}

message VolumeSetResponse {
  Volume volume = 1;
  VolumeResponse volume_response = 2;
}

message SnapCreateRequest {
  // volume id
  string id = 1;
  VolumeLocator locator = 2;
  bool readonly = 3;
}

message SnapCreateResponse {
  VolumeCreateResponse volume_create_response = 1;
}

message VolumeInfo {
  string volume_id = 1;
  string path = 2;
  VolumeSpec storage = 3;
}

// GraphDriverChanges represent a list of changes between the filesystem layers
// specified by the ID and Parent.  // Parent may be an empty string, in which
// case there is no parent.
// Where the Path is the filesystem path within the layered filesystem
message GraphDriverChanges {
  string path = 1;
  GraphDriverChangeType kind = 2;
}

message ClusterResponse {
  string error = 1;
}

message ActiveRequest {
  map<int64, string> ReqestKV = 1;
}

message ActiveRequests {
  int64 RequestCount = 1;
  repeated ActiveRequest ActiveRequest = 2;
}