scope

Documentation

Overview

Package scope provides types for handling all the information to process a request in the topology/ClusterReconciler controller.

Index

• type ClusterBlueprint
  • func (b *ClusterBlueprint) HasControlPlaneInfrastructureMachine() bool
  • func (b *ClusterBlueprint) HasControlPlaneMachineHealthCheck() bool
  • func (b *ClusterBlueprint) HasMachineDeployments() bool
• type ClusterState
• type ControlPlaneBlueprint
• type ControlPlaneState
• type ControlPlaneUpgradeTracker
• type MachineDeploymentBlueprint
• type MachineDeploymentState
  • func (md *MachineDeploymentState) IsRollingOut() bool
• type MachineDeploymentUpgradeTracker
  • func (m *MachineDeploymentUpgradeTracker) AllowUpgrade() bool
  • func (m *MachineDeploymentUpgradeTracker) MarkPendingUpgrade(name string)
  • func (m *MachineDeploymentUpgradeTracker) MarkRollingOut(names ...string)
  • func (m *MachineDeploymentUpgradeTracker) PendingUpgrade() bool
  • func (m *MachineDeploymentUpgradeTracker) PendingUpgradeNames() []string
  • func (m *MachineDeploymentUpgradeTracker) RolloutNames() []string
• type MachineDeploymentsStateMap
  • func (mds MachineDeploymentsStateMap) IsAnyRollingOut() bool
  • func (mds MachineDeploymentsStateMap) RollingOut() []string
• type Scope
  • func New(cluster *clusterv1.Cluster) *Scope
• type UpgradeTracker
  • func NewUpgradeTracker() *UpgradeTracker

Types

type ClusterBlueprint

type ClusterBlueprint struct {
	// Topology holds the topology info from Cluster.Spec.
	Topology *clusterv1.Topology

	// ClusterClass holds the ClusterClass object referenced from Cluster.Spec.Topology.
	ClusterClass *clusterv1.ClusterClass

	// InfrastructureClusterTemplate holds the InfrastructureClusterTemplate referenced from ClusterClass.
	InfrastructureClusterTemplate *unstructured.Unstructured

	// ControlPlane holds the ControlPlaneBlueprint derived from ClusterClass.
	ControlPlane *ControlPlaneBlueprint

	// MachineDeployments holds the MachineDeploymentBlueprints derived from ClusterClass.
	MachineDeployments map[string]*MachineDeploymentBlueprint
}

ClusterBlueprint holds all the objects required for computing the desired state of a managed Cluster topology, including the ClusterClass and all the referenced templates.

func (*ClusterBlueprint) HasControlPlaneInfrastructureMachine

func (b *ClusterBlueprint) HasControlPlaneInfrastructureMachine() bool

HasControlPlaneInfrastructureMachine checks whether the clusterClass mandates the controlPlane has infrastructureMachines.

func (*ClusterBlueprint) HasControlPlaneMachineHealthCheck

func (b *ClusterBlueprint) HasControlPlaneMachineHealthCheck() bool

HasControlPlaneMachineHealthCheck returns true if the ControlPlaneClass has both MachineInfrastructure and a MachineHealthCheck defined.

func (*ClusterBlueprint) HasMachineDeployments

func (b *ClusterBlueprint) HasMachineDeployments() bool

HasMachineDeployments checks whether the topology has MachineDeployments.

type ClusterState

type ClusterState struct {
	// Cluster holds the Cluster object.
	Cluster *clusterv1.Cluster

	// InfrastructureCluster holds the infrastructure cluster object referenced by the Cluster.
	InfrastructureCluster *unstructured.Unstructured

	// ControlPlane holds the controlplane object referenced by the Cluster.
	ControlPlane *ControlPlaneState

	// MachineDeployments holds the machine deployments in the Cluster.
	MachineDeployments MachineDeploymentsStateMap
}

ClusterState holds all the objects representing the state of a managed Cluster topology. NOTE: please note that we are going to deal with two different type state, the current state as read from the API server, and the desired state resulting from processing the ClusterBlueprint.

type ControlPlaneBlueprint

type ControlPlaneBlueprint struct {
	// Template holds the control plane template referenced from ClusterClass.
	Template *unstructured.Unstructured

	// InfrastructureMachineTemplate holds the infrastructure machine template for the control plane, if defined in the ClusterClass.
	InfrastructureMachineTemplate *unstructured.Unstructured

	// MachineHealthCheck holds the MachineHealthCheckClass for this ControlPlane.
	// +optional
	MachineHealthCheck *clusterv1.MachineHealthCheckClass
}

ControlPlaneBlueprint holds the templates required for computing the desired state of a managed control plane.

type ControlPlaneState

type ControlPlaneState struct {
	// Object holds the ControlPlane object.
	Object *unstructured.Unstructured

	// InfrastructureMachineTemplate holds the infrastructure template referenced by the ControlPlane object.
	InfrastructureMachineTemplate *unstructured.Unstructured

	// MachineHealthCheckClass holds the MachineHealthCheck for this ControlPlane.
	// +optional
	MachineHealthCheck *clusterv1.MachineHealthCheck
}

ControlPlaneState holds all the objects representing the state of a managed control plane.

type ControlPlaneUpgradeTracker

type ControlPlaneUpgradeTracker struct {
	// PendingUpgrade is true if the control plane version needs to be updated. False otherwise.
	PendingUpgrade bool

	// IsProvisioning is true if the control plane is being provisioned for the first time. False otherwise.
	IsProvisioning bool

	// IsUpgrading is true if the control plane is in the middle of an upgrade.
	// Note: Refer to control plane contract for definition of upgrading.
	IsUpgrading bool

	// IsScaling is true if the control plane is in the middle of a scale operation.
	// Note: Refer to control plane contract for definition of scaling.
	IsScaling bool
}

ControlPlaneUpgradeTracker holds the current upgrade status of the Control Plane.

type MachineDeploymentBlueprint

type MachineDeploymentBlueprint struct {
	// Metadata holds the metadata for a MachineDeployment.
	// NOTE: This is a convenience copy of the metadata field from Cluster.Spec.Topology.Workers.MachineDeployments[x].
	Metadata clusterv1.ObjectMeta

	// BootstrapTemplate holds the bootstrap template for a MachineDeployment referenced from ClusterClass.
	BootstrapTemplate *unstructured.Unstructured

	// InfrastructureMachineTemplate holds the infrastructure machine template for a MachineDeployment referenced from ClusterClass.
	InfrastructureMachineTemplate *unstructured.Unstructured

	// MachineHealthCheck holds the MachineHealthCheckClass for this MachineDeployment.
	// +optional
	MachineHealthCheck *clusterv1.MachineHealthCheckClass
}

MachineDeploymentBlueprint holds the templates required for computing the desired state of a managed MachineDeployment; it also holds a copy of the MachineDeployment metadata from Cluster.Topology, thus providing all the required info in a single place.

type MachineDeploymentState

type MachineDeploymentState struct {
	// Object holds the MachineDeployment object.
	Object *clusterv1.MachineDeployment

	// BootstrapTemplate holds the bootstrap template referenced by the MachineDeployment object.
	BootstrapTemplate *unstructured.Unstructured

	// InfrastructureMachineTemplate holds the infrastructure machine template referenced by the MachineDeployment object.
	InfrastructureMachineTemplate *unstructured.Unstructured

	// MachineHealthCheck holds a MachineHealthCheck linked to the MachineDeployment object.
	// +optional
	MachineHealthCheck *clusterv1.MachineHealthCheck
}

MachineDeploymentState holds all the objects representing the state of a managed deployment.

func (*MachineDeploymentState) IsRollingOut

func (md *MachineDeploymentState) IsRollingOut() bool

IsRollingOut determines if the machine deployment is upgrading. A machine deployment is considered upgrading if: - if any of the replicas of the the machine deployment is not ready.

type MachineDeploymentUpgradeTracker

type MachineDeploymentUpgradeTracker struct {
	// contains filtered or unexported fields
}

MachineDeploymentUpgradeTracker holds the current upgrade status and makes upgrade decisions for MachineDeployments.

func (*MachineDeploymentUpgradeTracker) AllowUpgrade

func (m *MachineDeploymentUpgradeTracker) AllowUpgrade() bool

AllowUpgrade returns true if a MachineDeployment is allowed to upgrade, returns false otherwise. Note: If AllowUpgrade returns true the machine deployment will pick up the topology version. This will eventually trigger a machine deployment rollout.

func (*MachineDeploymentUpgradeTracker) MarkPendingUpgrade

func (m *MachineDeploymentUpgradeTracker) MarkPendingUpgrade(name string)

MarkPendingUpgrade marks a machine deployment as in need of an upgrade. This is generally used to capture machine deployments that have not yet picked up the topology version.

func (*MachineDeploymentUpgradeTracker) MarkRollingOut

func (m *MachineDeploymentUpgradeTracker) MarkRollingOut(names ...string)

MarkRollingOut marks a MachineDeployment as currently rolling out or is about to rollout. NOTE: We are using Rollout because this includes upgrades and also other changes that could imply Machines being created/deleted; in both cases we should wait for the operation to complete before moving to the next step of the Cluster upgrade.

func (*MachineDeploymentUpgradeTracker) PendingUpgrade

func (m *MachineDeploymentUpgradeTracker) PendingUpgrade() bool

PendingUpgrade returns true if any of the machine deployments are pending an upgrade. Returns false, otherwise.

func (*MachineDeploymentUpgradeTracker) PendingUpgradeNames

func (m *MachineDeploymentUpgradeTracker) PendingUpgradeNames() []string

PendingUpgradeNames returns the list of machine deployment names that are pending an upgrade.

func (*MachineDeploymentUpgradeTracker) RolloutNames

func (m *MachineDeploymentUpgradeTracker) RolloutNames() []string

RolloutNames returns the list of machine deployments that are rolling out or are about to rollout.

type MachineDeploymentsStateMap

type MachineDeploymentsStateMap map[string]*MachineDeploymentState

MachineDeploymentsStateMap holds a collection of MachineDeployment states.

func (MachineDeploymentsStateMap) IsAnyRollingOut

func (mds MachineDeploymentsStateMap) IsAnyRollingOut() bool

IsAnyRollingOut returns true if at least one of the machine deployments is rolling out. False, otherwise.

func (MachineDeploymentsStateMap) RollingOut

func (mds MachineDeploymentsStateMap) RollingOut() []string

RollingOut returns the list of the machine deployments that are rolling out.

type Scope

type Scope struct {
	// Blueprint holds all the objects required for computing the desired state of a managed topology.
	Blueprint *ClusterBlueprint

	// Current holds the current state of the managed topology.
	Current *ClusterState

	// Desired holds the desired state of the managed topology.
	Desired *ClusterState

	// UpgradeTracker holds information about ongoing upgrades in the managed topology.
	UpgradeTracker *UpgradeTracker
}

Scope holds all the information to process a request in the topology/ClusterReconciler controller.

func New

func New(cluster *clusterv1.Cluster) *Scope

New returns a new Scope with only the cluster; while processing a request in the topology/ClusterReconciler controller additional information will be added about the Cluster blueprint, current state and desired state.

type UpgradeTracker

type UpgradeTracker struct {
	ControlPlane       ControlPlaneUpgradeTracker
	MachineDeployments MachineDeploymentUpgradeTracker
}

UpgradeTracker is a helper to capture the upgrade status and make upgrade decisions.

func NewUpgradeTracker

func NewUpgradeTracker() *UpgradeTracker

NewUpgradeTracker returns an upgrade tracker with empty tracking information.