persistentvolumeclaim

package
v1.22.5 Latest Latest
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 Go to latest Published: Jul 29, 2024 License: Apache-2.0 Imports: 22 Imported by: 0

Documentation

Overview

Package persistentvolumeclaim contains all the logic to reconcile and build PVCS

Index

Constants

This section is empty.

Variables

View Source 
var ErrorInvalidSize = fmt.Errorf("invalid storage size")

ErrorInvalidSize is raised when the size specified by the user is not valid and can't be specified in a PVC declaration

Functions

func BelongToInstance added in v1.18.4 

func BelongToInstance(cluster *apiv1.Cluster, instanceName, pvcName string) bool

BelongToInstance returns a boolean indicating if that given PVC belongs to an instance

func Build 

func Build(
	cluster *apiv1.Cluster,
	configuration *CreateConfiguration,
) (*corev1.PersistentVolumeClaim, error)

Build spec of a PVC, given its name and the storage configuration TODO: this logic eventually should be moved inside reconcile

func CreateInstancePVCs added in v1.18.4 

func CreateInstancePVCs(
	ctx context.Context,
	c client.Client,
	cluster *apiv1.Cluster,
	source *StorageSource,
	serial int,
) error

CreateInstancePVCs creates the expected pvcs for the instance

func EnrichStatus 

func EnrichStatus(
	ctx context.Context,
	cluster *apiv1.Cluster,
	runningInstances []corev1.Pod,
	jobs []batchv1.Job,
	managedPVCs []corev1.PersistentVolumeClaim,
)

EnrichStatus obtains and classifies the current status of each managed PVC

func EnsureInstancePVCGroupIsDeleted added in v1.18.4 

func EnsureInstancePVCGroupIsDeleted(
	ctx context.Context,
	c client.Client,
	cluster *apiv1.Cluster,
	name string,
	namespace string,
) error

EnsureInstancePVCGroupIsDeleted ensures that all the expected pvc for a given instance are deleted

func FilterByPodSpec added in v1.18.4 

func FilterByPodSpec(
	pvcs []corev1.PersistentVolumeClaim,
	instanceSpec corev1.PodSpec,
) []corev1.PersistentVolumeClaim

FilterByPodSpec returns all the corev1.PersistentVolumeClaim that are used inside the podSpec

func GetInstancePVCs added in v1.21.0 

func GetInstancePVCs(
	ctx context.Context,
	cli client.Client,
	instanceName string,
	namespace string,
) ([]corev1.PersistentVolumeClaim, error)

GetInstancePVCs gets all the PVC associated with a given instance

func GetSourceMetadataOrNil added in v1.22.5 

func GetSourceMetadataOrNil(
	ctx context.Context,
	c client.Client,
	namespace string,
	typedSource corev1.TypedLocalObjectReference,
) (*metav1.ObjectMeta, error)

GetSourceMetadataOrNil gets snapshot metadata from a specified source. If the source doesn't exist, returns nil

func InstanceHasMissingMounts added in v1.18.4 

func InstanceHasMissingMounts(cluster *apiv1.Cluster, instance *corev1.Pod) bool

InstanceHasMissingMounts returns true if the instance has expected PVCs that are not mounted

func IsUsedByPodSpec 

func IsUsedByPodSpec(podSpec corev1.PodSpec, pvcNames ...string) bool

IsUsedByPodSpec checks if the given pod spec is using the PVCs

func Reconcile added in v1.18.4 

func Reconcile(
	ctx context.Context,
	c client.Client,
	cluster *apiv1.Cluster,
	instances []corev1.Pod,
	pvcs []corev1.PersistentVolumeClaim,
) (ctrl.Result, error)

Reconcile reconciles the PVCs

func ReconcileMetadata added in v1.21.4 

func ReconcileMetadata(
	ctx context.Context,
	c client.Client,
	cluster *apiv1.Cluster,
	pvcs []corev1.PersistentVolumeClaim,
) error

ReconcileMetadata a ensures that the pvc metadata is kept up to date

func ReconcileSerialAnnotation added in v1.21.4 

func ReconcileSerialAnnotation(
	ctx context.Context,
	c client.Client,
	cluster *apiv1.Cluster,
	runningInstances []corev1.Pod,
	pvcs []corev1.PersistentVolumeClaim,
) error

ReconcileSerialAnnotation ensures that all the PVCs have the correct serial annotation

Types

type Backup added in v1.22.0 

type Backup interface {
	// GetSnapshotName gets the snapshot name for a certain PVC
	GetSnapshotName(backupName string) string
	// GetVolumeSnapshotClass will return the volume snapshot class to be used
	// when snapshotting a PVC with this Role.
	GetVolumeSnapshotClass(configuration *apiv1.VolumeSnapshotConfiguration) *string
}

Backup is an object capable of describing the backup behaviour of a pvc

type Bootstrap added in v1.22.0 

type Bootstrap interface {
	// GetInitialStatus returns the status the PVC should be first created with
	GetInitialStatus() PVCStatus
}

Bootstrap is an object capable of describing the starting status of a pvc

type Configuration added in v1.22.0 

type Configuration interface {
	// GetStorageConfiguration will return the storage configuration to be used
	// for this PVC role and this cluster
	GetStorageConfiguration(cluster *apiv1.Cluster) (apiv1.StorageConfiguration, error)
	// GetSource gets the PVC source to be used when creating a new PVC
	GetSource(source *StorageSource) (*corev1.TypedLocalObjectReference, error)
}

Configuration is an object capable of describing the configuration of a pvc

type CreateConfiguration 

type CreateConfiguration struct {
	Status         PVCStatus
	NodeSerial     int
	Calculator     ExpectedObjectCalculator
	TablespaceName string
	Storage        apiv1.StorageConfiguration
	Source         *corev1.TypedLocalObjectReference
}

CreateConfiguration specifies how a PVC should be created

type ExpectedObjectCalculator added in v1.22.0 

type ExpectedObjectCalculator interface {
	Bootstrap
	Backup
	Configuration
	Meta
}

ExpectedObjectCalculator returns the data needed for a given pvc

func GetExpectedObjectCalculator added in v1.22.0 

func GetExpectedObjectCalculator(labels map[string]string) (ExpectedObjectCalculator, error)

GetExpectedObjectCalculator return an object capable of determining a series of data for the given pvc

func NewPgDataCalculator added in v1.22.0 

func NewPgDataCalculator() ExpectedObjectCalculator

NewPgDataCalculator returns a ExpectedObjectCalculator for a PVC of PG_DATA type

func NewPgTablespaceCalculator added in v1.22.0 

func NewPgTablespaceCalculator(tbsName string) ExpectedObjectCalculator

NewPgTablespaceCalculator returns a ExpectedObjectCalculator for a PVC of PG_TABLESPACE type

func NewPgWalCalculator added in v1.22.0 

func NewPgWalCalculator() ExpectedObjectCalculator

NewPgWalCalculator returns a ExpectedObjectCalculator for a PVC of PG_WAL type

type Meta added in v1.22.0 

type Meta interface {
	// GetName will be used to get the name of the PVC
	GetName(instanceName string) string
	// GetLabels will be used as the label value
	GetLabels(instanceName string) map[string]string
	// GetRoleName return the role name in string
	GetRoleName() string
}

Meta is an object capable of describing the metadata of a pvc

type PVCStatus 

type PVCStatus = string

PVCStatus describes the PVC phase 

const (
	// StatusInitializing is the annotation value for PVC initializing status
	StatusInitializing PVCStatus = "initializing"

	// StatusReady is the annotation value for PVC ready status
	StatusReady PVCStatus = "ready"

	// StatusDetached is the annotation value for PVC detached status
	StatusDetached PVCStatus = "detached"
)

type StorageSource added in v1.21.0 

type StorageSource struct {
	// The data source that should be used for PGDATA
	DataSource corev1.TypedLocalObjectReference `json:"dataSource"`

	// The (optional) data source that should be used for WALs
	WALSource *corev1.TypedLocalObjectReference `json:"walSource"`

	// The (optional) data source that should be used for TABLESPACE
	TablespaceSource map[string]corev1.TypedLocalObjectReference `json:"tablespaceSource"`
}

StorageSource the storage source to be used when creating a set of PVCs

func GetCandidateStorageSourceForPrimary added in v1.21.0 

func GetCandidateStorageSourceForPrimary(
	cluster *apiv1.Cluster,
	backup *apiv1.Backup,
) *StorageSource

GetCandidateStorageSourceForPrimary gets the candidate storage source to be used to create a primary PVC

func GetCandidateStorageSourceForReplica added in v1.21.0 

func GetCandidateStorageSourceForReplica(
	ctx context.Context,
	cluster *apiv1.Cluster,
	backupList apiv1.BackupList,
) *StorageSource

GetCandidateStorageSourceForReplica gets the candidate storage source to be used to create a replica PVC

type ValidationMessage added in v1.21.1 

type ValidationMessage struct {
	ObjectName string `json:"objectName"`
	Message    string `json:"message"`
}

ValidationMessage is a message about a snapshot

type ValidationStatus added in v1.21.1 

type ValidationStatus struct {
	// Errors is the list of blocking errors
	Errors []ValidationMessage `json:"errors"`

	// Warnings is the list of warnings that are not blocking
	Warnings []ValidationMessage `json:"warnings"`
}

ValidationStatus is the result of the validation of a cluster datasource

func VerifyDataSourceCoherence added in v1.21.1 

func VerifyDataSourceCoherence(
	ctx context.Context,
	c client.Client,
	namespace string,
	source *apiv1.DataSource,
) (ValidationStatus, error)

VerifyDataSourceCoherence verifies if the specified data source that we should use when creating a new cluster is coherent. We check for:

  • role of the volume snapshot is coherent with the requested section (being storage or walStorage)

  • the specified snapshots all belong to the same cluster and backupName

func (*ValidationStatus) ContainsErrors added in v1.21.1 

func (status *ValidationStatus) ContainsErrors() bool

ContainsErrors returns true if the validation result has any blocking errors.

func (*ValidationStatus) ContainsWarnings added in v1.21.1 

func (status *ValidationStatus) ContainsWarnings() bool

ContainsWarnings returns true if there are any validation warnings.

Source Files

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