api

package
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 Go to latest Published: Apr 3, 2026 License: Apache-2.0 Imports: 6 Imported by: 0

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Constants

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const (
	// LiveMigrationIntent indicates that the request is intended for live migration.
	LiveMigrationIntent v1alpha1.SchedulingIntent = "live_migration"
	// RebuildIntent indicates that the request is intended for rebuilding a VM.
	RebuildIntent v1alpha1.SchedulingIntent = "rebuild"
	// ResizeIntent indicates that the request is intended for resizing a VM.
	ResizeIntent v1alpha1.SchedulingIntent = "resize"
	// EvacuateIntent indicates that the request is intended for evacuating a VM.
	EvacuateIntent v1alpha1.SchedulingIntent = "evacuate"
	// CreateIntent indicates that the request is intended for creating a new VM.
	CreateIntent v1alpha1.SchedulingIntent = "create"
	// ReserveForFailoverIntent indicates that the request is for failover reservation scheduling.
	ReserveForFailoverIntent v1alpha1.SchedulingIntent = "reserve_for_failover"
	// ReserveForCommittedResourceIntent indicates that the request is for CR reservation scheduling.
	ReserveForCommittedResourceIntent v1alpha1.SchedulingIntent = "reserve_for_committed_resource"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type ExternalSchedulerHost 

type ExternalSchedulerHost struct {
	// Name of the Nova compute host, e.g. nova-compute-bb123.
	ComputeHost string `json:"host"`
	// Name of the hypervisor hostname, e.g. domain-c123.<uuid>
	HypervisorHostname string `json:"hypervisor_hostname"`
}

Host object from the Nova scheduler pipeline. See: https://github.com/sapcc/nova/blob/stable/xena-m3/nova/scheduler/host_manager.py class HostState

type ExternalSchedulerRequest 

type ExternalSchedulerRequest struct {
	Spec NovaObject[NovaSpec] `json:"spec"`

	// Request context from Nova that contains additional meta information.
	Context NovaRequestContext `json:"context"`

	Hosts   []ExternalSchedulerHost `json:"hosts"`
	Weights map[string]float64      `json:"weights"`

	// The name of the pipeline to execute.
	Pipeline string `json:"pipeline"`
}

Request generated by the Nova scheduler when calling cortex. The request contains a spec of the VM to be scheduled, a list of hosts and their status, and a map of weights that were calculated by the Nova weigher pipeline. Some additional flags are also included.

func (ExternalSchedulerRequest) Filter 

func (r ExternalSchedulerRequest) Filter(includedHosts map[string]float64) lib.FilterWeigherPipelineRequest

func (ExternalSchedulerRequest) GetFlavorType 

func (r ExternalSchedulerRequest) GetFlavorType() (FlavorType, error)

GetFlavorType determines the flavor type based on the requested flavor's extra specs.

func (ExternalSchedulerRequest) GetHosts 

func (r ExternalSchedulerRequest) GetHosts() []string

func (ExternalSchedulerRequest) GetHypervisorType 

func (req ExternalSchedulerRequest) GetHypervisorType() (HypervisorType, error)

GetHypervisorType determines the hypervisor type based on the requested flavor.

func (ExternalSchedulerRequest) GetIntent 

func (req ExternalSchedulerRequest) GetIntent() (v1alpha1.SchedulingIntent, error)

GetIntent analyzes the request spec and determines the intent of the scheduling request.

func (ExternalSchedulerRequest) GetTraceLogArgs 

func (r ExternalSchedulerRequest) GetTraceLogArgs() []slog.Attr

func (ExternalSchedulerRequest) GetWeights 

func (r ExternalSchedulerRequest) GetWeights() map[string]float64

type ExternalSchedulerResponse 

type ExternalSchedulerResponse struct {
	Hosts []string `json:"hosts"`
}

Response generated by cortex for the Nova scheduler. Cortex returns an ordered list of hosts that the VM should be scheduled on.

type FlavorType 

type FlavorType string
const (
	// FlavorTypeGeneralPurpose represents general purpose workloads.
	FlavorTypeGeneralPurpose FlavorType = "general-purpose"
	// FlavorTypeHANA represents HANA workloads.
	FlavorTypeHANA FlavorType = "hana"
)

type HypervisorType 

type HypervisorType string
const (
	// HypervisorTypeQEMU represents QEMU/KVM hypervisors.
	HypervisorTypeQEMU HypervisorType = "qemu"
	// HypervisorTypeCH represents Cloud-Hypervisor/KVM hypervisors.
	HypervisorTypeCH HypervisorType = "ch"
	// HypervisorTypeVMware represents VMware hypervisors.
	HypervisorTypeVMware HypervisorType = "vmware"
)

type NovaFlavor 

type NovaFlavor struct {
	ID          int               `json:"id"`
	Name        string            `json:"name"`
	MemoryMB    uint64            `json:"memory_mb"`
	VCPUs       uint64            `json:"vcpus"`
	RootGB      uint64            `json:"root_gb"`
	EphemeralGB uint64            `json:"ephemeral_gb"`
	FlavorID    string            `json:"flavorid"`
	Swap        int               `json:"swap"`
	RXTXFactor  float64           `json:"rxtx_factor"`
	VCPUWeight  int               `json:"vcpu_weight"`
	Disabled    bool              `json:"disabled"`
	IsPublic    bool              `json:"is_public"`
	ExtraSpecs  map[string]string `json:"extra_specs"`
	Description *string           `json:"description"`
	CreatedAt   string            `json:"created_at"`
	UpdatedAt   *string           `json:"updated_at"`
	DeletedAt   *string           `json:"deleted_at"`
	Deleted     bool              `json:"deleted"`
}

Nova flavor metadata for the specified VM.

type NovaImageMeta 

type NovaImageMeta struct {
	ID              string                     `json:"id"`
	Name            string                     `json:"name"`
	Status          string                     `json:"status"`
	Checksum        string                     `json:"checksum"`
	Owner           string                     `json:"owner"`
	Size            int                        `json:"size"`
	ContainerFormat string                     `json:"container_format"`
	DiskFormat      string                     `json:"disk_format"`
	CreatedAt       string                     `json:"created_at"`
	UpdatedAt       string                     `json:"updated_at"`
	MinRAM          int                        `json:"min_ram"`
	MinDisk         int                        `json:"min_disk"`
	Properties      NovaObject[map[string]any] `json:"properties"`
}

Nova image metadata for the specified VM.

type NovaInstanceGroup 

type NovaInstanceGroup struct {
	UserID    string         `json:"user_id"`
	ProjectID string         `json:"project_id"`
	UUID      string         `json:"uuid"`
	Name      string         `json:"name"`
	Policies  []string       `json:"policies"`
	Members   []string       `json:"members"`
	Hosts     []string       `json:"hosts"`
	Policy    string         `json:"policy"`
	Rules     map[string]any `json:"_rules"`
	CreatedAt string         `json:"created_at"`
	UpdatedAt *string        `json:"updated_at"`
	DeletedAt *string        `json:"deleted_at"`
	Deleted   bool           `json:"deleted"`
}

type NovaNumaTopology 

type NovaNumaTopology struct {
	Cells []NovaObject[map[string]any] `json:"cells"`
}

Nova NUMA topology for the specified VM.

type NovaObject 

type NovaObject[V any] struct {
	Name      string   `json:"nova_object.name"`
	Namespace string   `json:"nova_object.namespace"`
	Version   string   `json:"nova_object.version"`
	Data      V        `json:"nova_object.data"`
	Changes   []string `json:"nova_object.changes"`
}

Wrapped Nova object. Nova returns objects in this format.

type NovaObjectList 

type NovaObjectList[V any] struct {
	Objects []NovaObject[V] `json:"objects"`
}

type NovaRequestContext 

type NovaRequestContext struct {
	UserID          string   `json:"user"`
	ProjectID       string   `json:"project_id"`
	SystemScope     *string  `json:"system_scope"`
	Project         string   `json:"project"`
	DomainID        *string  `json:"domain"`
	UserDomainID    string   `json:"user_domain"`
	ProjectDomainID string   `json:"project_domain"`
	IsAdmin         bool     `json:"is_admin"`
	ReadOnly        bool     `json:"read_only"`
	ShowDeleted     bool     `json:"show_deleted"`
	RequestID       string   `json:"request_id"`
	GlobalRequestID *string  `json:"global_request_id"`
	ResourceUUID    *string  `json:"resource_uuid"`
	Roles           []string `json:"roles"`
	UserIdentity    string   `json:"user_identity"`
	IsAdminProject  bool     `json:"is_admin_project"`
	ReadDeleted     string   `json:"read_deleted"`

	RemoteAddress string  `json:"remote_address"`
	Timestamp     string  `json:"timestamp"`
	QuotaClass    *string `json:"quota_class"`
	UserName      string  `json:"user_name"`
	ProjectName   string  `json:"project_name"`
}

Nova request context object. For the spec of this object, see:

- This: https://github.com/sapcc/nova/blob/a56409/nova/context.py#L166 - And: https://github.com/openstack/oslo.context/blob/db20dd/oslo_context/context.py#L329

Some fields are omitted: "service_catalog", "read_deleted" (same as "show_deleted")

type NovaRequestLevelParams 

type NovaRequestLevelParams struct {
	RootRequired  []any `json:"root_required"`
	RootForbidden []any `json:"root_forbidden"`
	SameSubtree   []any `json:"same_subtree"`
}

type NovaRequestedDestination 

type NovaRequestedDestination struct {
	Host                string    `json:"host"`
	Node                string    `json:"node"`
	Aggregates          []string  `json:"aggregates"`
	ForbiddenAggregates *[]string `json:"forbidden_aggregates"`
}

type NovaSpec 

type NovaSpec struct {
	ProjectID        string `json:"project_id"`
	UserID           string `json:"user_id"`
	InstanceUUID     string `json:"instance_uuid"`
	AvailabilityZone string `json:"availability_zone"`
	NumInstances     uint64 `json:"num_instances"`
	IsBfv            bool   `json:"is_bfv"`

	// Consider using GetSchedulerHintStr.
	SchedulerHints map[string]any `json:"scheduler_hints"`

	IgnoreHosts *[]string `json:"ignore_hosts"`
	ForceHosts  *[]string `json:"force_hosts"`
	ForceNodes  *[]string `json:"force_nodes"`

	Image              NovaObject[NovaImageMeta]          `json:"image"`
	Flavor             NovaObject[NovaFlavor]             `json:"flavor"`
	RequestLevelParams NovaObject[NovaRequestLevelParams] `json:"request_level_params"`
	NetworkMetadata    NovaObject[map[string]any]         `json:"network_metadata"`
	Limits             NovaObject[map[string]any]         `json:"limits"`
	RequestedNetworks  NovaObjectList[map[string]any]     `json:"requested_networks"`
	SecurityGroups     NovaObjectList[map[string]any]     `json:"security_groups"`

	NumaTopology         *NovaObject[NovaNumaTopology]         `json:"numa_topology"`
	RequestedDestination *NovaObject[NovaRequestedDestination] `json:"requested_destination"`
	InstanceGroup        *NovaObject[NovaInstanceGroup]        `json:"instance_group"`
}

Spec object from the Nova scheduler pipeline. Fields unused by Nova are omitted. See: https://github.com/sapcc/nova/blob/stable/xena-m3/nova/objects/request_spec.py

func (NovaSpec) GetSchedulerHintStr 

func (s NovaSpec) GetSchedulerHintStr(key string) (string, error)

Hints can be a one-element list or a direct value. See: https://github.com/sapcc/nova/blob/3e715db/nova/objects/request_spec.py#L382

This function is a convenience to extract the first element from the hints list or return the value directly if it's not a list.

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