1094 lines
42 KiB
Protocol Buffer
1094 lines
42 KiB
Protocol Buffer
// Code generated by make; DO NOT EDIT.
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syntax = "proto3";
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package csi.v0;
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import "google/protobuf/wrappers.proto";
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option go_package = "csi";
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service Identity {
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rpc GetPluginInfo(GetPluginInfoRequest)
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returns (GetPluginInfoResponse) {}
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rpc GetPluginCapabilities(GetPluginCapabilitiesRequest)
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returns (GetPluginCapabilitiesResponse) {}
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rpc Probe (ProbeRequest)
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returns (ProbeResponse) {}
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}
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service Controller {
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rpc CreateVolume (CreateVolumeRequest)
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returns (CreateVolumeResponse) {}
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rpc DeleteVolume (DeleteVolumeRequest)
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returns (DeleteVolumeResponse) {}
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rpc ControllerPublishVolume (ControllerPublishVolumeRequest)
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returns (ControllerPublishVolumeResponse) {}
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rpc ControllerUnpublishVolume (ControllerUnpublishVolumeRequest)
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returns (ControllerUnpublishVolumeResponse) {}
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rpc ValidateVolumeCapabilities (ValidateVolumeCapabilitiesRequest)
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returns (ValidateVolumeCapabilitiesResponse) {}
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rpc ListVolumes (ListVolumesRequest)
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returns (ListVolumesResponse) {}
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rpc GetCapacity (GetCapacityRequest)
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returns (GetCapacityResponse) {}
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rpc ControllerGetCapabilities (ControllerGetCapabilitiesRequest)
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returns (ControllerGetCapabilitiesResponse) {}
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rpc CreateSnapshot (CreateSnapshotRequest)
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returns (CreateSnapshotResponse) {}
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rpc DeleteSnapshot (DeleteSnapshotRequest)
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returns (DeleteSnapshotResponse) {}
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rpc ListSnapshots (ListSnapshotsRequest)
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returns (ListSnapshotsResponse) {}
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}
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service Node {
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rpc NodeStageVolume (NodeStageVolumeRequest)
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returns (NodeStageVolumeResponse) {}
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rpc NodeUnstageVolume (NodeUnstageVolumeRequest)
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returns (NodeUnstageVolumeResponse) {}
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rpc NodePublishVolume (NodePublishVolumeRequest)
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returns (NodePublishVolumeResponse) {}
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rpc NodeUnpublishVolume (NodeUnpublishVolumeRequest)
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returns (NodeUnpublishVolumeResponse) {}
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// NodeGetId is being deprecated in favor of NodeGetInfo and will be
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// removed in CSI 1.0. Existing drivers, however, may depend on this
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// RPC call and hence this RPC call MUST be implemented by the CSI
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// plugin prior to v1.0.
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rpc NodeGetId (NodeGetIdRequest)
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returns (NodeGetIdResponse) {
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option deprecated = true;
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}
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rpc NodeGetCapabilities (NodeGetCapabilitiesRequest)
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returns (NodeGetCapabilitiesResponse) {}
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// Prior to CSI 1.0 - CSI plugins MUST implement both NodeGetId and
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// NodeGetInfo RPC calls.
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rpc NodeGetInfo (NodeGetInfoRequest)
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returns (NodeGetInfoResponse) {}
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}
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message GetPluginInfoRequest {
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// Intentionally empty.
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}
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message GetPluginInfoResponse {
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// The name MUST follow reverse domain name notation format
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// (https://en.wikipedia.org/wiki/Reverse_domain_name_notation).
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// It SHOULD include the plugin's host company name and the plugin
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// name, to minimize the possibility of collisions. It MUST be 63
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// characters or less, beginning and ending with an alphanumeric
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// character ([a-z0-9A-Z]) with dashes (-), underscores (_),
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// dots (.), and alphanumerics between. This field is REQUIRED.
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string name = 1;
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// This field is REQUIRED. Value of this field is opaque to the CO.
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string vendor_version = 2;
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// This field is OPTIONAL. Values are opaque to the CO.
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map<string, string> manifest = 3;
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}
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message GetPluginCapabilitiesRequest {
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// Intentionally empty.
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}
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message GetPluginCapabilitiesResponse {
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// All the capabilities that the controller service supports. This
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// field is OPTIONAL.
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repeated PluginCapability capabilities = 2;
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}
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// Specifies a capability of the plugin.
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message PluginCapability {
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message Service {
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enum Type {
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UNKNOWN = 0;
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// CONTROLLER_SERVICE indicates that the Plugin provides RPCs for
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// the ControllerService. Plugins SHOULD provide this capability.
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// In rare cases certain plugins may wish to omit the
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// ControllerService entirely from their implementation, but such
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// SHOULD NOT be the common case.
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// The presence of this capability determines whether the CO will
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// attempt to invoke the REQUIRED ControllerService RPCs, as well
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// as specific RPCs as indicated by ControllerGetCapabilities.
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CONTROLLER_SERVICE = 1;
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// ACCESSIBILITY_CONSTRAINTS indicates that the volumes for this
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// plugin may not be equally accessible by all nodes in the
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// cluster. The CO MUST use the topology information returned by
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// CreateVolumeRequest along with the topology information
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// returned by NodeGetInfo to ensure that a given volume is
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// accessible from a given node when scheduling workloads.
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ACCESSIBILITY_CONSTRAINTS = 2;
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}
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Type type = 1;
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}
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oneof type {
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// Service that the plugin supports.
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Service service = 1;
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}
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}
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message ProbeRequest {
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// Intentionally empty.
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}
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message ProbeResponse {
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// Readiness allows a plugin to report its initialization status back
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// to the CO. Initialization for some plugins MAY be time consuming
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// and it is important for a CO to distinguish between the following
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// cases:
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//
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// 1) The plugin is in an unhealthy state and MAY need restarting. In
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// this case a gRPC error code SHALL be returned.
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// 2) The plugin is still initializing, but is otherwise perfectly
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// healthy. In this case a successful response SHALL be returned
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// with a readiness value of `false`. Calls to the plugin's
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// Controller and/or Node services MAY fail due to an incomplete
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// initialization state.
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// 3) The plugin has finished initializing and is ready to service
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// calls to its Controller and/or Node services. A successful
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// response is returned with a readiness value of `true`.
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//
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// This field is OPTIONAL. If not present, the caller SHALL assume
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// that the plugin is in a ready state and is accepting calls to its
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// Controller and/or Node services (according to the plugin's reported
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// capabilities).
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.google.protobuf.BoolValue ready = 1;
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}
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message CreateVolumeRequest {
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// The suggested name for the storage space. This field is REQUIRED.
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// It serves two purposes:
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// 1) Idempotency - This name is generated by the CO to achieve
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// idempotency. If `CreateVolume` fails, the volume may or may not
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// be provisioned. In this case, the CO may call `CreateVolume`
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// again, with the same name, to ensure the volume exists. The
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// Plugin should ensure that multiple `CreateVolume` calls for the
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// same name do not result in more than one piece of storage
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// provisioned corresponding to that name. If a Plugin is unable to
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// enforce idempotency, the CO's error recovery logic could result
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// in multiple (unused) volumes being provisioned.
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// 2) Suggested name - Some storage systems allow callers to specify
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// an identifier by which to refer to the newly provisioned
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// storage. If a storage system supports this, it can optionally
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// use this name as the identifier for the new volume.
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string name = 1;
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// This field is OPTIONAL. This allows the CO to specify the capacity
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// requirement of the volume to be provisioned. If not specified, the
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// Plugin MAY choose an implementation-defined capacity range. If
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// specified it MUST always be honored, even when creating volumes
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// from a source; which may force some backends to internally extend
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// the volume after creating it.
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CapacityRange capacity_range = 2;
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// The capabilities that the provisioned volume MUST have: the Plugin
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// MUST provision a volume that could satisfy ALL of the
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// capabilities specified in this list. The Plugin MUST assume that
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// the CO MAY use the provisioned volume later with ANY of the
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// capabilities specified in this list. This also enables the CO to do
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// early validation: if ANY of the specified volume capabilities are
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// not supported by the Plugin, the call SHALL fail. This field is
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// REQUIRED.
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repeated VolumeCapability volume_capabilities = 3;
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// Plugin specific parameters passed in as opaque key-value pairs.
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// This field is OPTIONAL. The Plugin is responsible for parsing and
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// validating these parameters. COs will treat these as opaque.
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map<string, string> parameters = 4;
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// Secrets required by plugin to complete volume creation request.
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// This field is OPTIONAL. Refer to the `Secrets Requirements`
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// section on how to use this field.
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map<string, string> controller_create_secrets = 5;
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// If specified, the new volume will be pre-populated with data from
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// this source. This field is OPTIONAL.
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VolumeContentSource volume_content_source = 6;
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// Specifies where (regions, zones, racks, etc.) the provisioned
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// volume MUST be accessible from.
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// An SP SHALL advertise the requirements for topological
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// accessibility information in documentation. COs SHALL only specify
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// topological accessibility information supported by the SP.
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// This field is OPTIONAL.
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// This field SHALL NOT be specified unless the SP has the
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// ACCESSIBILITY_CONSTRAINTS plugin capability.
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// If this field is not specified and the SP has the
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// ACCESSIBILITY_CONSTRAINTS plugin capability, the SP MAY choose
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// where the provisioned volume is accessible from.
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TopologyRequirement accessibility_requirements = 7;
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}
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// Specifies what source the volume will be created from. One of the
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// type fields MUST be specified.
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message VolumeContentSource {
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message SnapshotSource {
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// Contains identity information for the existing source snapshot.
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// This field is REQUIRED. Plugin is REQUIRED to support creating
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// volume from snapshot if it supports the capability
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// CREATE_DELETE_SNAPSHOT.
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string id = 1;
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}
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oneof type {
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SnapshotSource snapshot = 1;
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}
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}
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message CreateVolumeResponse {
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// Contains all attributes of the newly created volume that are
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// relevant to the CO along with information required by the Plugin
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// to uniquely identify the volume. This field is REQUIRED.
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Volume volume = 1;
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}
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// Specify a capability of a volume.
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message VolumeCapability {
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// Indicate that the volume will be accessed via the block device API.
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message BlockVolume {
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// Intentionally empty, for now.
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}
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// Indicate that the volume will be accessed via the filesystem API.
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message MountVolume {
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// The filesystem type. This field is OPTIONAL.
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// An empty string is equal to an unspecified field value.
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string fs_type = 1;
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// The mount options that can be used for the volume. This field is
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// OPTIONAL. `mount_flags` MAY contain sensitive information.
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// Therefore, the CO and the Plugin MUST NOT leak this information
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// to untrusted entities. The total size of this repeated field
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// SHALL NOT exceed 4 KiB.
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repeated string mount_flags = 2;
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}
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// Specify how a volume can be accessed.
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message AccessMode {
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enum Mode {
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UNKNOWN = 0;
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// Can only be published once as read/write on a single node, at
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// any given time.
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SINGLE_NODE_WRITER = 1;
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// Can only be published once as readonly on a single node, at
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// any given time.
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SINGLE_NODE_READER_ONLY = 2;
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// Can be published as readonly at multiple nodes simultaneously.
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MULTI_NODE_READER_ONLY = 3;
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// Can be published at multiple nodes simultaneously. Only one of
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// the node can be used as read/write. The rest will be readonly.
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MULTI_NODE_SINGLE_WRITER = 4;
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// Can be published as read/write at multiple nodes
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// simultaneously.
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MULTI_NODE_MULTI_WRITER = 5;
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}
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// This field is REQUIRED.
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Mode mode = 1;
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}
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// Specifies what API the volume will be accessed using. One of the
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// following fields MUST be specified.
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oneof access_type {
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BlockVolume block = 1;
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MountVolume mount = 2;
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}
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// This is a REQUIRED field.
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AccessMode access_mode = 3;
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}
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// The capacity of the storage space in bytes. To specify an exact size,
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// `required_bytes` and `limit_bytes` SHALL be set to the same value. At
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// least one of the these fields MUST be specified.
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message CapacityRange {
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// Volume MUST be at least this big. This field is OPTIONAL.
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// A value of 0 is equal to an unspecified field value.
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// The value of this field MUST NOT be negative.
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int64 required_bytes = 1;
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// Volume MUST not be bigger than this. This field is OPTIONAL.
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// A value of 0 is equal to an unspecified field value.
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// The value of this field MUST NOT be negative.
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int64 limit_bytes = 2;
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}
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// The information about a provisioned volume.
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message Volume {
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// The capacity of the volume in bytes. This field is OPTIONAL. If not
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// set (value of 0), it indicates that the capacity of the volume is
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// unknown (e.g., NFS share).
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// The value of this field MUST NOT be negative.
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int64 capacity_bytes = 1;
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// Contains identity information for the created volume. This field is
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// REQUIRED. The identity information will be used by the CO in
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// subsequent calls to refer to the provisioned volume.
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string id = 2;
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// Attributes reflect static properties of a volume and MUST be passed
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// to volume validation and publishing calls.
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// Attributes SHALL be opaque to a CO. Attributes SHALL NOT be mutable
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// and SHALL be safe for the CO to cache. Attributes SHOULD NOT
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// contain sensitive information. Attributes MAY NOT uniquely identify
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// a volume. A volume uniquely identified by `id` SHALL always report
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// the same attributes. This field is OPTIONAL and when present MUST
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// be passed to volume validation and publishing calls.
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map<string, string> attributes = 3;
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// If specified, indicates that the volume is not empty and is
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// pre-populated with data from the specified source.
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// This field is OPTIONAL.
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VolumeContentSource content_source = 4;
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// Specifies where (regions, zones, racks, etc.) the provisioned
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// volume is accessible from.
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// A plugin that returns this field MUST also set the
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// ACCESSIBILITY_CONSTRAINTS plugin capability.
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// An SP MAY specify multiple topologies to indicate the volume is
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// accessible from multiple locations.
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// COs MAY use this information along with the topology information
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// returned by NodeGetInfo to ensure that a given volume is accessible
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// from a given node when scheduling workloads.
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// This field is OPTIONAL. If it is not specified, the CO MAY assume
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// the volume is equally accessible from all nodes in the cluster and
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// may schedule workloads referencing the volume on any available
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// node.
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//
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// Example 1:
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// accessible_topology = {"region": "R1", "zone": "Z2"}
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// Indicates a volume accessible only from the "region" "R1" and the
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// "zone" "Z2".
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//
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// Example 2:
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// accessible_topology =
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// {"region": "R1", "zone": "Z2"},
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// {"region": "R1", "zone": "Z3"}
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// Indicates a volume accessible from both "zone" "Z2" and "zone" "Z3"
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// in the "region" "R1".
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repeated Topology accessible_topology = 5;
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}
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message TopologyRequirement {
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// Specifies the list of topologies the provisioned volume MUST be
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// accessible from.
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// This field is OPTIONAL. If TopologyRequirement is specified either
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// requisite or preferred or both MUST be specified.
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//
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// If requisite is specified, the provisioned volume MUST be
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// accessible from at least one of the requisite topologies.
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//
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// Given
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// x = number of topologies provisioned volume is accessible from
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// n = number of requisite topologies
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// The CO MUST ensure n >= 1. The SP MUST ensure x >= 1
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// If x==n, than the SP MUST make the provisioned volume available to
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// all topologies from the list of requisite topologies. If it is
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// unable to do so, the SP MUST fail the CreateVolume call.
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// For example, if a volume should be accessible from a single zone,
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// and requisite =
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// {"region": "R1", "zone": "Z2"}
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// then the provisioned volume MUST be accessible from the "region"
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// "R1" and the "zone" "Z2".
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// Similarly, if a volume should be accessible from two zones, and
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// requisite =
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// {"region": "R1", "zone": "Z2"},
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// {"region": "R1", "zone": "Z3"}
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// then the provisioned volume MUST be accessible from the "region"
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// "R1" and both "zone" "Z2" and "zone" "Z3".
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//
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// If x<n, than the SP SHALL choose x unique topologies from the list
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// of requisite topologies. If it is unable to do so, the SP MUST fail
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// the CreateVolume call.
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// For example, if a volume should be accessible from a single zone,
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// and requisite =
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// {"region": "R1", "zone": "Z2"},
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// {"region": "R1", "zone": "Z3"}
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// then the SP may choose to make the provisioned volume available in
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// either the "zone" "Z2" or the "zone" "Z3" in the "region" "R1".
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// Similarly, if a volume should be accessible from two zones, and
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// requisite =
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// {"region": "R1", "zone": "Z2"},
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// {"region": "R1", "zone": "Z3"},
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// {"region": "R1", "zone": "Z4"}
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// then the provisioned volume MUST be accessible from any combination
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// of two unique topologies: e.g. "R1/Z2" and "R1/Z3", or "R1/Z2" and
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// "R1/Z4", or "R1/Z3" and "R1/Z4".
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//
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// If x>n, than the SP MUST make the provisioned volume available from
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// all topologies from the list of requisite topologies and MAY choose
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// the remaining x-n unique topologies from the list of all possible
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// topologies. If it is unable to do so, the SP MUST fail the
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// CreateVolume call.
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// For example, if a volume should be accessible from two zones, and
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// requisite =
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// {"region": "R1", "zone": "Z2"}
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// then the provisioned volume MUST be accessible from the "region"
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// "R1" and the "zone" "Z2" and the SP may select the second zone
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// independently, e.g. "R1/Z4".
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repeated Topology requisite = 1;
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// Specifies the list of topologies the CO would prefer the volume to
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// be provisioned in.
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//
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// This field is OPTIONAL. If TopologyRequirement is specified either
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// requisite or preferred or both MUST be specified.
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//
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// An SP MUST attempt to make the provisioned volume available using
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// the preferred topologies in order from first to last.
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//
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// If requisite is specified, all topologies in preferred list MUST
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// also be present in the list of requisite topologies.
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//
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// If the SP is unable to to make the provisioned volume available
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// from any of the preferred topologies, the SP MAY choose a topology
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// from the list of requisite topologies.
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// If the list of requisite topologies is not specified, then the SP
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// MAY choose from the list of all possible topologies.
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// If the list of requisite topologies is specified and the SP is
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// unable to to make the provisioned volume available from any of the
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// requisite topologies it MUST fail the CreateVolume call.
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//
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// Example 1:
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// Given a volume should be accessible from a single zone, and
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// requisite =
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// {"region": "R1", "zone": "Z2"},
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// {"region": "R1", "zone": "Z3"}
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// preferred =
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// {"region": "R1", "zone": "Z3"}
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// then the the SP SHOULD first attempt to make the provisioned volume
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// available from "zone" "Z3" in the "region" "R1" and fall back to
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// "zone" "Z2" in the "region" "R1" if that is not possible.
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//
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// Example 2:
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// Given a volume should be accessible from a single zone, and
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// requisite =
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// {"region": "R1", "zone": "Z2"},
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// {"region": "R1", "zone": "Z3"},
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// {"region": "R1", "zone": "Z4"},
|
|
// {"region": "R1", "zone": "Z5"}
|
|
// preferred =
|
|
// {"region": "R1", "zone": "Z4"},
|
|
// {"region": "R1", "zone": "Z2"}
|
|
// then the the SP SHOULD first attempt to make the provisioned volume
|
|
// accessible from "zone" "Z4" in the "region" "R1" and fall back to
|
|
// "zone" "Z2" in the "region" "R1" if that is not possible. If that
|
|
// is not possible, the SP may choose between either the "zone"
|
|
// "Z3" or "Z5" in the "region" "R1".
|
|
//
|
|
// Example 3:
|
|
// Given a volume should be accessible from TWO zones (because an
|
|
// opaque parameter in CreateVolumeRequest, for example, specifies
|
|
// the volume is accessible from two zones, aka synchronously
|
|
// replicated), and
|
|
// requisite =
|
|
// {"region": "R1", "zone": "Z2"},
|
|
// {"region": "R1", "zone": "Z3"},
|
|
// {"region": "R1", "zone": "Z4"},
|
|
// {"region": "R1", "zone": "Z5"}
|
|
// preferred =
|
|
// {"region": "R1", "zone": "Z5"},
|
|
// {"region": "R1", "zone": "Z3"}
|
|
// then the the SP SHOULD first attempt to make the provisioned volume
|
|
// accessible from the combination of the two "zones" "Z5" and "Z3" in
|
|
// the "region" "R1". If that's not possible, it should fall back to
|
|
// a combination of "Z5" and other possibilities from the list of
|
|
// requisite. If that's not possible, it should fall back to a
|
|
// combination of "Z3" and other possibilities from the list of
|
|
// requisite. If that's not possible, it should fall back to a
|
|
// combination of other possibilities from the list of requisite.
|
|
repeated Topology preferred = 2;
|
|
}
|
|
|
|
// Topology is a map of topological domains to topological segments.
|
|
// A topological domain is a sub-division of a cluster, like "region",
|
|
// "zone", "rack", etc.
|
|
// A topological segment is a specific instance of a topological domain,
|
|
// like "zone3", "rack3", etc.
|
|
// For example {"com.company/zone": "Z1", "com.company/rack": "R3"}
|
|
// Valid keys have two segments: an optional prefix and name, separated
|
|
// by a slash (/), for example: "com.company.example/zone".
|
|
// The key name segment is required. The prefix is optional.
|
|
// Both the key name and the prefix MUST each be 63 characters or less,
|
|
// begin and end with an alphanumeric character ([a-z0-9A-Z]) and
|
|
// contain only dashes (-), underscores (_), dots (.), or alphanumerics
|
|
// in between, for example "zone".
|
|
// The key prefix MUST follow reverse domain name notation format
|
|
// (https://en.wikipedia.org/wiki/Reverse_domain_name_notation).
|
|
// The key prefix SHOULD include the plugin's host company name and/or
|
|
// the plugin name, to minimize the possibility of collisions with keys
|
|
// from other plugins.
|
|
// If a key prefix is specified, it MUST be identical across all
|
|
// topology keys returned by the SP (across all RPCs).
|
|
// Keys MUST be case-insensitive. Meaning the keys "Zone" and "zone"
|
|
// MUST not both exist.
|
|
// Each value (topological segment) MUST contain 1 or more strings.
|
|
// Each string MUST be 63 characters or less and begin and end with an
|
|
// alphanumeric character with '-', '_', '.', or alphanumerics in
|
|
// between.
|
|
message Topology {
|
|
map<string, string> segments = 1;
|
|
}
|
|
message DeleteVolumeRequest {
|
|
// The ID of the volume to be deprovisioned.
|
|
// This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// Secrets required by plugin to complete volume deletion request.
|
|
// This field is OPTIONAL. Refer to the `Secrets Requirements`
|
|
// section on how to use this field.
|
|
map<string, string> controller_delete_secrets = 2;
|
|
}
|
|
|
|
message DeleteVolumeResponse {
|
|
// Intentionally empty.
|
|
}
|
|
message ControllerPublishVolumeRequest {
|
|
// The ID of the volume to be used on a node.
|
|
// This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The ID of the node. This field is REQUIRED. The CO SHALL set this
|
|
// field to match the node ID returned by `NodeGetInfo`.
|
|
string node_id = 2;
|
|
|
|
// The capability of the volume the CO expects the volume to have.
|
|
// This is a REQUIRED field.
|
|
VolumeCapability volume_capability = 3;
|
|
|
|
// Whether to publish the volume in readonly mode. This field is
|
|
// REQUIRED.
|
|
bool readonly = 4;
|
|
|
|
// Secrets required by plugin to complete controller publish volume
|
|
// request. This field is OPTIONAL. Refer to the
|
|
// `Secrets Requirements` section on how to use this field.
|
|
map<string, string> controller_publish_secrets = 5;
|
|
|
|
// Attributes of the volume to be used on a node. This field is
|
|
// OPTIONAL and MUST match the attributes of the Volume identified
|
|
// by `volume_id`.
|
|
map<string, string> volume_attributes = 6;
|
|
}
|
|
|
|
message ControllerPublishVolumeResponse {
|
|
// The SP specific information that will be passed to the Plugin in
|
|
// the subsequent `NodeStageVolume` or `NodePublishVolume` calls
|
|
// for the given volume.
|
|
// This information is opaque to the CO. This field is OPTIONAL.
|
|
map<string, string> publish_info = 1;
|
|
}
|
|
message ControllerUnpublishVolumeRequest {
|
|
// The ID of the volume. This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The ID of the node. This field is OPTIONAL. The CO SHOULD set this
|
|
// field to match the node ID returned by `NodeGetInfo` or leave it
|
|
// unset. If the value is set, the SP MUST unpublish the volume from
|
|
// the specified node. If the value is unset, the SP MUST unpublish
|
|
// the volume from all nodes it is published to.
|
|
string node_id = 2;
|
|
|
|
// Secrets required by plugin to complete controller unpublish volume
|
|
// request. This SHOULD be the same secrets passed to the
|
|
// ControllerPublishVolume call for the specified volume.
|
|
// This field is OPTIONAL. Refer to the `Secrets Requirements`
|
|
// section on how to use this field.
|
|
map<string, string> controller_unpublish_secrets = 3;
|
|
}
|
|
|
|
message ControllerUnpublishVolumeResponse {
|
|
// Intentionally empty.
|
|
}
|
|
message ValidateVolumeCapabilitiesRequest {
|
|
// The ID of the volume to check. This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The capabilities that the CO wants to check for the volume. This
|
|
// call SHALL return "supported" only if all the volume capabilities
|
|
// specified below are supported. This field is REQUIRED.
|
|
repeated VolumeCapability volume_capabilities = 2;
|
|
|
|
// Attributes of the volume to check. This field is OPTIONAL and MUST
|
|
// match the attributes of the Volume identified by `volume_id`.
|
|
map<string, string> volume_attributes = 3;
|
|
|
|
// Specifies where (regions, zones, racks, etc.) the caller believes
|
|
// the volume is accessible from.
|
|
// A caller MAY specify multiple topologies to indicate they believe
|
|
// the volume to be accessible from multiple locations.
|
|
// This field is OPTIONAL. This field SHALL NOT be set unless the
|
|
// plugin advertises the ACCESSIBILITY_CONSTRAINTS capability.
|
|
repeated Topology accessible_topology = 4;
|
|
}
|
|
|
|
message ValidateVolumeCapabilitiesResponse {
|
|
// True if the Plugin supports the specified capabilities for the
|
|
// given volume. This field is REQUIRED.
|
|
bool supported = 1;
|
|
|
|
// Message to the CO if `supported` above is false. This field is
|
|
// OPTIONAL.
|
|
// An empty string is equal to an unspecified field value.
|
|
string message = 2;
|
|
}
|
|
message ListVolumesRequest {
|
|
// If specified (non-zero value), the Plugin MUST NOT return more
|
|
// entries than this number in the response. If the actual number of
|
|
// entries is more than this number, the Plugin MUST set `next_token`
|
|
// in the response which can be used to get the next page of entries
|
|
// in the subsequent `ListVolumes` call. This field is OPTIONAL. If
|
|
// not specified (zero value), it means there is no restriction on the
|
|
// number of entries that can be returned.
|
|
// The value of this field MUST NOT be negative.
|
|
int32 max_entries = 1;
|
|
|
|
// A token to specify where to start paginating. Set this field to
|
|
// `next_token` returned by a previous `ListVolumes` call to get the
|
|
// next page of entries. This field is OPTIONAL.
|
|
// An empty string is equal to an unspecified field value.
|
|
string starting_token = 2;
|
|
}
|
|
|
|
message ListVolumesResponse {
|
|
message Entry {
|
|
Volume volume = 1;
|
|
}
|
|
|
|
repeated Entry entries = 1;
|
|
|
|
// This token allows you to get the next page of entries for
|
|
// `ListVolumes` request. If the number of entries is larger than
|
|
// `max_entries`, use the `next_token` as a value for the
|
|
// `starting_token` field in the next `ListVolumes` request. This
|
|
// field is OPTIONAL.
|
|
// An empty string is equal to an unspecified field value.
|
|
string next_token = 2;
|
|
}
|
|
message GetCapacityRequest {
|
|
// If specified, the Plugin SHALL report the capacity of the storage
|
|
// that can be used to provision volumes that satisfy ALL of the
|
|
// specified `volume_capabilities`. These are the same
|
|
// `volume_capabilities` the CO will use in `CreateVolumeRequest`.
|
|
// This field is OPTIONAL.
|
|
repeated VolumeCapability volume_capabilities = 1;
|
|
|
|
// If specified, the Plugin SHALL report the capacity of the storage
|
|
// that can be used to provision volumes with the given Plugin
|
|
// specific `parameters`. These are the same `parameters` the CO will
|
|
// use in `CreateVolumeRequest`. This field is OPTIONAL.
|
|
map<string, string> parameters = 2;
|
|
|
|
// If specified, the Plugin SHALL report the capacity of the storage
|
|
// that can be used to provision volumes that in the specified
|
|
// `accessible_topology`. This is the same as the
|
|
// `accessible_topology` the CO returns in a `CreateVolumeResponse`.
|
|
// This field is OPTIONAL. This field SHALL NOT be set unless the
|
|
// plugin advertises the ACCESSIBILITY_CONSTRAINTS capability.
|
|
Topology accessible_topology = 3;
|
|
}
|
|
|
|
message GetCapacityResponse {
|
|
// The available capacity, in bytes, of the storage that can be used
|
|
// to provision volumes. If `volume_capabilities` or `parameters` is
|
|
// specified in the request, the Plugin SHALL take those into
|
|
// consideration when calculating the available capacity of the
|
|
// storage. This field is REQUIRED.
|
|
// The value of this field MUST NOT be negative.
|
|
int64 available_capacity = 1;
|
|
}
|
|
message ControllerGetCapabilitiesRequest {
|
|
// Intentionally empty.
|
|
}
|
|
|
|
message ControllerGetCapabilitiesResponse {
|
|
// All the capabilities that the controller service supports. This
|
|
// field is OPTIONAL.
|
|
repeated ControllerServiceCapability capabilities = 2;
|
|
}
|
|
|
|
// Specifies a capability of the controller service.
|
|
message ControllerServiceCapability {
|
|
message RPC {
|
|
enum Type {
|
|
UNKNOWN = 0;
|
|
CREATE_DELETE_VOLUME = 1;
|
|
PUBLISH_UNPUBLISH_VOLUME = 2;
|
|
LIST_VOLUMES = 3;
|
|
GET_CAPACITY = 4;
|
|
// Currently the only way to consume a snapshot is to create
|
|
// a volume from it. Therefore plugins supporting
|
|
// CREATE_DELETE_SNAPSHOT MUST support creating volume from
|
|
// snapshot.
|
|
CREATE_DELETE_SNAPSHOT = 5;
|
|
// LIST_SNAPSHOTS is NOT REQUIRED. For plugins that need to upload
|
|
// a snapshot after it is being cut, LIST_SNAPSHOTS COULD be used
|
|
// with the snapshot_id as the filter to query whether the
|
|
// uploading process is complete or not.
|
|
LIST_SNAPSHOTS = 6;
|
|
}
|
|
|
|
Type type = 1;
|
|
}
|
|
|
|
oneof type {
|
|
// RPC that the controller supports.
|
|
RPC rpc = 1;
|
|
}
|
|
}
|
|
message CreateSnapshotRequest {
|
|
// The ID of the source volume to be snapshotted.
|
|
// This field is REQUIRED.
|
|
string source_volume_id = 1;
|
|
|
|
// The suggested name for the snapshot. This field is REQUIRED for
|
|
// idempotency.
|
|
string name = 2;
|
|
|
|
// Secrets required by plugin to complete snapshot creation request.
|
|
// This field is OPTIONAL. Refer to the `Secrets Requirements`
|
|
// section on how to use this field.
|
|
map<string, string> create_snapshot_secrets = 3;
|
|
|
|
// Plugin specific parameters passed in as opaque key-value pairs.
|
|
// This field is OPTIONAL. The Plugin is responsible for parsing and
|
|
// validating these parameters. COs will treat these as opaque.
|
|
// Use cases for opaque parameters:
|
|
// - Specify a policy to automatically clean up the snapshot.
|
|
// - Specify an expiration date for the snapshot.
|
|
// - Specify whether the snapshot is readonly or read/write.
|
|
// - Specify if the snapshot should be replicated to some place.
|
|
// - Specify primary or secondary for replication systems that
|
|
// support snapshotting only on primary.
|
|
map<string, string> parameters = 4;
|
|
}
|
|
|
|
message CreateSnapshotResponse {
|
|
// Contains all attributes of the newly created snapshot that are
|
|
// relevant to the CO along with information required by the Plugin
|
|
// to uniquely identify the snapshot. This field is REQUIRED.
|
|
Snapshot snapshot = 1;
|
|
}
|
|
|
|
// The information about a provisioned snapshot.
|
|
message Snapshot {
|
|
// This is the complete size of the snapshot in bytes. The purpose of
|
|
// this field is to give CO guidance on how much space is needed to
|
|
// create a volume from this snapshot. The size of the volume MUST NOT
|
|
// be less than the size of the source snapshot. This field is
|
|
// OPTIONAL. If this field is not set, it indicates that this size is
|
|
// unknown. The value of this field MUST NOT be negative and a size of
|
|
// zero means it is unspecified.
|
|
int64 size_bytes = 1;
|
|
|
|
// Uniquely identifies a snapshot and is generated by the plugin. It
|
|
// will not change over time. This field is REQUIRED. The identity
|
|
// information will be used by the CO in subsequent calls to refer to
|
|
// the provisioned snapshot.
|
|
string id = 2;
|
|
|
|
// Identity information for the source volume. Note that creating a
|
|
// snapshot from a snapshot is not supported here so the source has to
|
|
// be a volume. This field is REQUIRED.
|
|
string source_volume_id = 3;
|
|
|
|
// Timestamp when the point-in-time snapshot is taken on the storage
|
|
// system. The format of this field should be a Unix nanoseconds time
|
|
// encoded as an int64. On Unix, the command `date +%s%N` returns the
|
|
// current time in nanoseconds since 1970-01-01 00:00:00 UTC. This
|
|
// field is REQUIRED.
|
|
int64 created_at = 4;
|
|
|
|
// The status of a snapshot.
|
|
SnapshotStatus status = 5;
|
|
}
|
|
|
|
// The status of a snapshot.
|
|
message SnapshotStatus {
|
|
enum Type {
|
|
UNKNOWN = 0;
|
|
// A snapshot is ready for use.
|
|
READY = 1;
|
|
// A snapshot is cut and is now being uploaded.
|
|
// Some cloud providers and storage systems uploads the snapshot
|
|
// to the cloud after the snapshot is cut. During this phase,
|
|
// `thaw` can be done so the application can be running again if
|
|
// `freeze` was done before taking the snapshot.
|
|
UPLOADING = 2;
|
|
// An error occurred during the snapshot uploading process.
|
|
// This error status is specific for uploading because
|
|
// `CreateSnaphot` is a blocking call before the snapshot is
|
|
// cut and therefore it SHOULD NOT come back with an error
|
|
// status when an error occurs. Instead a gRPC error code SHALL
|
|
// be returned by `CreateSnapshot` when an error occurs before
|
|
// a snapshot is cut.
|
|
ERROR_UPLOADING = 3;
|
|
}
|
|
// This field is REQUIRED.
|
|
Type type = 1;
|
|
|
|
// Additional information to describe why a snapshot ended up in the
|
|
// `ERROR_UPLOADING` status. This field is OPTIONAL.
|
|
string details = 2;
|
|
}
|
|
message DeleteSnapshotRequest {
|
|
// The ID of the snapshot to be deleted.
|
|
// This field is REQUIRED.
|
|
string snapshot_id = 1;
|
|
|
|
// Secrets required by plugin to complete snapshot deletion request.
|
|
// This field is OPTIONAL. Refer to the `Secrets Requirements`
|
|
// section on how to use this field.
|
|
map<string, string> delete_snapshot_secrets = 2;
|
|
}
|
|
|
|
message DeleteSnapshotResponse {}
|
|
// List all snapshots on the storage system regardless of how they were
|
|
// created.
|
|
message ListSnapshotsRequest {
|
|
// If specified (non-zero value), the Plugin MUST NOT return more
|
|
// entries than this number in the response. If the actual number of
|
|
// entries is more than this number, the Plugin MUST set `next_token`
|
|
// in the response which can be used to get the next page of entries
|
|
// in the subsequent `ListSnapshots` call. This field is OPTIONAL. If
|
|
// not specified (zero value), it means there is no restriction on the
|
|
// number of entries that can be returned.
|
|
// The value of this field MUST NOT be negative.
|
|
int32 max_entries = 1;
|
|
|
|
// A token to specify where to start paginating. Set this field to
|
|
// `next_token` returned by a previous `ListSnapshots` call to get the
|
|
// next page of entries. This field is OPTIONAL.
|
|
// An empty string is equal to an unspecified field value.
|
|
string starting_token = 2;
|
|
|
|
// Identity information for the source volume. This field is OPTIONAL.
|
|
// It can be used to list snapshots by volume.
|
|
string source_volume_id = 3;
|
|
|
|
// Identity information for a specific snapshot. This field is
|
|
// OPTIONAL. It can be used to list only a specific snapshot.
|
|
// ListSnapshots will return with current snapshot information
|
|
// and will not block if the snapshot is being uploaded.
|
|
string snapshot_id = 4;
|
|
}
|
|
|
|
message ListSnapshotsResponse {
|
|
message Entry {
|
|
Snapshot snapshot = 1;
|
|
}
|
|
|
|
repeated Entry entries = 1;
|
|
|
|
// This token allows you to get the next page of entries for
|
|
// `ListSnapshots` request. If the number of entries is larger than
|
|
// `max_entries`, use the `next_token` as a value for the
|
|
// `starting_token` field in the next `ListSnapshots` request. This
|
|
// field is OPTIONAL.
|
|
// An empty string is equal to an unspecified field value.
|
|
string next_token = 2;
|
|
}
|
|
message NodeStageVolumeRequest {
|
|
// The ID of the volume to publish. This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The CO SHALL set this field to the value returned by
|
|
// `ControllerPublishVolume` if the corresponding Controller Plugin
|
|
// has `PUBLISH_UNPUBLISH_VOLUME` controller capability, and SHALL be
|
|
// left unset if the corresponding Controller Plugin does not have
|
|
// this capability. This is an OPTIONAL field.
|
|
map<string, string> publish_info = 2;
|
|
|
|
// The path to which the volume will be published. It MUST be an
|
|
// absolute path in the root filesystem of the process serving this
|
|
// request. The CO SHALL ensure that there is only one
|
|
// staging_target_path per volume.
|
|
// This is a REQUIRED field.
|
|
string staging_target_path = 3;
|
|
|
|
// The capability of the volume the CO expects the volume to have.
|
|
// This is a REQUIRED field.
|
|
VolumeCapability volume_capability = 4;
|
|
|
|
// Secrets required by plugin to complete node stage volume request.
|
|
// This field is OPTIONAL. Refer to the `Secrets Requirements`
|
|
// section on how to use this field.
|
|
map<string, string> node_stage_secrets = 5;
|
|
|
|
// Attributes of the volume to publish. This field is OPTIONAL and
|
|
// MUST match the attributes of the `Volume` identified by
|
|
// `volume_id`.
|
|
map<string, string> volume_attributes = 6;
|
|
}
|
|
|
|
message NodeStageVolumeResponse {
|
|
// Intentionally empty.
|
|
}
|
|
message NodeUnstageVolumeRequest {
|
|
// The ID of the volume. This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The path at which the volume was published. It MUST be an absolute
|
|
// path in the root filesystem of the process serving this request.
|
|
// This is a REQUIRED field.
|
|
string staging_target_path = 2;
|
|
}
|
|
|
|
message NodeUnstageVolumeResponse {
|
|
// Intentionally empty.
|
|
}
|
|
message NodePublishVolumeRequest {
|
|
// The ID of the volume to publish. This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The CO SHALL set this field to the value returned by
|
|
// `ControllerPublishVolume` if the corresponding Controller Plugin
|
|
// has `PUBLISH_UNPUBLISH_VOLUME` controller capability, and SHALL be
|
|
// left unset if the corresponding Controller Plugin does not have
|
|
// this capability. This is an OPTIONAL field.
|
|
map<string, string> publish_info = 2;
|
|
|
|
// The path to which the device was mounted by `NodeStageVolume`.
|
|
// It MUST be an absolute path in the root filesystem of the process
|
|
// serving this request.
|
|
// It MUST be set if the Node Plugin implements the
|
|
// `STAGE_UNSTAGE_VOLUME` node capability.
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|
// This is an OPTIONAL field.
|
|
string staging_target_path = 3;
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|
|
|
// The path to which the volume will be published. It MUST be an
|
|
// absolute path in the root filesystem of the process serving this
|
|
// request. The CO SHALL ensure uniqueness of target_path per volume.
|
|
// The CO SHALL ensure that the path exists, and that the process
|
|
// serving the request has `read` and `write` permissions to the path.
|
|
// This is a REQUIRED field.
|
|
string target_path = 4;
|
|
|
|
// The capability of the volume the CO expects the volume to have.
|
|
// This is a REQUIRED field.
|
|
VolumeCapability volume_capability = 5;
|
|
|
|
// Whether to publish the volume in readonly mode. This field is
|
|
// REQUIRED.
|
|
bool readonly = 6;
|
|
|
|
// Secrets required by plugin to complete node publish volume request.
|
|
// This field is OPTIONAL. Refer to the `Secrets Requirements`
|
|
// section on how to use this field.
|
|
map<string, string> node_publish_secrets = 7;
|
|
|
|
// Attributes of the volume to publish. This field is OPTIONAL and
|
|
// MUST match the attributes of the Volume identified by
|
|
// `volume_id`.
|
|
map<string, string> volume_attributes = 8;
|
|
}
|
|
|
|
message NodePublishVolumeResponse {
|
|
// Intentionally empty.
|
|
}
|
|
message NodeUnpublishVolumeRequest {
|
|
// The ID of the volume. This field is REQUIRED.
|
|
string volume_id = 1;
|
|
|
|
// The path at which the volume was published. It MUST be an absolute
|
|
// path in the root filesystem of the process serving this request.
|
|
// This is a REQUIRED field.
|
|
string target_path = 2;
|
|
}
|
|
|
|
message NodeUnpublishVolumeResponse {
|
|
// Intentionally empty.
|
|
}
|
|
message NodeGetIdRequest {
|
|
// Intentionally empty.
|
|
}
|
|
|
|
message NodeGetIdResponse {
|
|
// The ID of the node as understood by the SP which SHALL be used by
|
|
// CO in subsequent `ControllerPublishVolume`.
|
|
// This is a REQUIRED field.
|
|
string node_id = 1;
|
|
}
|
|
message NodeGetCapabilitiesRequest {
|
|
// Intentionally empty.
|
|
}
|
|
|
|
message NodeGetCapabilitiesResponse {
|
|
// All the capabilities that the node service supports. This field
|
|
// is OPTIONAL.
|
|
repeated NodeServiceCapability capabilities = 1;
|
|
}
|
|
|
|
// Specifies a capability of the node service.
|
|
message NodeServiceCapability {
|
|
message RPC {
|
|
enum Type {
|
|
UNKNOWN = 0;
|
|
STAGE_UNSTAGE_VOLUME = 1;
|
|
}
|
|
|
|
Type type = 1;
|
|
}
|
|
|
|
oneof type {
|
|
// RPC that the controller supports.
|
|
RPC rpc = 1;
|
|
}
|
|
}
|
|
message NodeGetInfoRequest {
|
|
}
|
|
|
|
message NodeGetInfoResponse {
|
|
// The ID of the node as understood by the SP which SHALL be used by
|
|
// CO in subsequent calls to `ControllerPublishVolume`.
|
|
// This is a REQUIRED field.
|
|
string node_id = 1;
|
|
|
|
// Maximum number of volumes that controller can publish to the node.
|
|
// If value is not set or zero CO SHALL decide how many volumes of
|
|
// this type can be published by the controller to the node. The
|
|
// plugin MUST NOT set negative values here.
|
|
// This field is OPTIONAL.
|
|
int64 max_volumes_per_node = 2;
|
|
|
|
// Specifies where (regions, zones, racks, etc.) the node is
|
|
// accessible from.
|
|
// A plugin that returns this field MUST also set the
|
|
// ACCESSIBILITY_CONSTRAINTS plugin capability.
|
|
// COs MAY use this information along with the topology information
|
|
// returned in CreateVolumeResponse to ensure that a given volume is
|
|
// accessible from a given node when scheduling workloads.
|
|
// This field is OPTIONAL. If it is not specified, the CO MAY assume
|
|
// the node is not subject to any topological constraint, and MAY
|
|
// schedule workloads that reference any volume V, such that there are
|
|
// no topological constraints declared for V.
|
|
//
|
|
// Example 1:
|
|
// accessible_topology =
|
|
// {"region": "R1", "zone": "R2"}
|
|
// Indicates the node exists within the "region" "R1" and the "zone"
|
|
// "Z2".
|
|
Topology accessible_topology = 3;
|
|
}
|