ssa

package module
v0.38.0 Latest Latest
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 Go to latest Published: Apr 5, 2024 License: Apache-2.0 Imports: 28 Imported by: 38

Documentation

Overview

Package ssa contains utilities for managing Kubernetes resources using sever-side apply. Adapted from https://github.com/stefanprodan/kustomizer/tree/v1.1.0/pkg/manager

Index

Constants

This section is empty.

Variables

View Source 
var ReconcileOrder = KindOrder{
	First: []string{
		"CustomResourceDefinition",
		"Namespace",
		"ClusterClass",
		"RuntimeClass",
		"PriorityClass",
		"StorageClass",
		"VolumeSnapshotClass",
		"IngressClass",
		"GatewayClass",
		"ResourceQuota",
		"ServiceAccount",
		"Role",
		"ClusterRole",
		"RoleBinding",
		"ClusterRoleBinding",
		"ConfigMap",
		"Secret",
		"Service",
		"LimitRange",
		"Deployment",
		"StatefulSet",
		"CronJob",
		"PodDisruptionBudget",
	},
	Last: []string{
		"MutatingWebhookConfiguration",
		"ValidatingWebhookConfiguration",
	},
}

ReconcileOrder holds the list of the Kubernetes native kinds that describes in which order they are reconciled.

Functions

func Equals 

func Equals(i, j schema.GroupKind) bool

func FieldsToSet added in v0.13.0 

func FieldsToSet(f metav1.FieldsV1) (s fieldpath.Set, err error)

FieldsToSet creates a set paths from an input trie of fields

func IsLessThan 

func IsLessThan(i, j schema.GroupKind) bool

func PatchRemoveAnnotations added in v0.23.0 

func PatchRemoveAnnotations(object *unstructured.Unstructured, keys []string) []jsonPatch

PatchRemoveAnnotations returns a jsonPatch array for removing annotations with matching keys.

func PatchRemoveFieldsManagers added in v0.23.0 

func PatchRemoveFieldsManagers(object *unstructured.Unstructured, managers []FieldManager) []jsonPatch

PatchRemoveFieldsManagers returns a jsonPatch array for removing managers with matching prefix and operation type.

func PatchRemoveLabels added in v0.23.0 

func PatchRemoveLabels(object *unstructured.Unstructured, keys []string) []jsonPatch

PatchRemoveLabels returns a jsonPatch array for removing labels with matching keys.

func PatchReplaceFieldsManagers added in v0.23.0 

func PatchReplaceFieldsManagers(object *unstructured.Unstructured, managers []FieldManager, name string) ([]jsonPatch, error)

PatchReplaceFieldsManagers returns a jsonPatch array for replacing the managers with matching prefix and operation type with the specified manager name and an apply operation.

func SanitizeUnstructuredData added in v0.33.0 

func SanitizeUnstructuredData(old, new *unstructured.Unstructured) error

SanitizeUnstructuredData masks the "data" values of an Unstructured object, the objects are modified in place. If the data value is the same in both objects, the mask is replaced with a default mask. If the data value is different, the mask is replaced with a before and after mask.

func SetNativeKindsDefaults deprecated added in v0.0.3 

func SetNativeKindsDefaults(objects []*unstructured.Unstructured) error

SetNativeKindsDefaults sets default values for native Kubernetes objects, working around various upstream Kubernetes API bugs.

Deprecated: use normalize.UnstructuredList or normalize.Unstructured instead.

func SetToFields added in v0.13.0 

func SetToFields(s fieldpath.Set) (f metav1.FieldsV1, err error)

SetToFields creates a trie of fields from an input set of paths

Types

type Action 

type Action string

Action represents the action type performed by the reconciliation process. 

const (
	// CreatedAction represents the creation of a new object.
	CreatedAction Action = "created"
	// ConfiguredAction represents the update of an existing object.
	ConfiguredAction Action = "configured"
	// UnchangedAction represents the absence of any action to an object.
	UnchangedAction Action = "unchanged"
	// DeletedAction represents the deletion of an object.
	DeletedAction Action = "deleted"
	// SkippedAction represents the fact that no action was performed on an object
	// due to the object being excluded from the reconciliation.
	SkippedAction Action = "skipped"
	// UnknownAction represents an unknown action.
	UnknownAction Action = "unknown"
)

func (Action) String added in v0.24.0 

func (a Action) String() string

String returns the string representation of the action.

type ApplyCleanupOptions added in v0.10.0 

type ApplyCleanupOptions struct {
	// Annotations defines which 'metadata.annotations' keys should be removed from in-cluster objects.
	Annotations []string `json:"annotations,omitempty"`

	// Labels defines which 'metadata.labels' keys should be removed from in-cluster objects.
	Labels []string `json:"labels,omitempty"`

	// FieldManagers defines which `metadata.managedFields` managers should be removed from in-cluster objects.
	FieldManagers []FieldManager `json:"fieldManagers,omitempty"`

	// Exclusions determines which in-cluster objects are skipped from cleanup
	// based on the specified key-value pairs.
	Exclusions map[string]string `json:"exclusions"`
}

ApplyCleanupOptions defines which metadata entries are to be removed before applying objects.

type ApplyOptions added in v0.3.0 

type ApplyOptions struct {
	// Force configures the engine to recreate objects that contain immutable field changes.
	Force bool `json:"force"`

	// ForceSelector determines which in-cluster objects are Force applied
	// based on the matching labels or annotations.
	ForceSelector map[string]string `json:"forceSelector"`

	// ExclusionSelector determines which in-cluster objects are skipped from apply
	// based on the matching labels or annotations.
	ExclusionSelector map[string]string `json:"exclusionSelector"`

	// IfNotPresentSelector determines which in-cluster objects are skipped from patching
	// based on the matching labels or annotations.
	IfNotPresentSelector map[string]string `json:"ifNotPresentSelector"`

	// WaitInterval defines the interval at which the engine polls for cluster
	// scoped resources to reach their final state.
	WaitInterval time.Duration `json:"waitInterval"`

	// WaitTimeout defines after which interval should the engine give up on waiting for
	// cluster scoped resources to reach their final state.
	WaitTimeout time.Duration `json:"waitTimeout"`

	// Cleanup defines which in-cluster metadata entries are to be removed before applying objects.
	Cleanup ApplyCleanupOptions `json:"cleanup"`
}

ApplyOptions contains options for server-side apply requests.

func DefaultApplyOptions added in v0.3.0 

func DefaultApplyOptions() ApplyOptions

DefaultApplyOptions returns the default apply options where force apply is disabled.

type ChangeSet 

type ChangeSet struct {
	Entries []ChangeSetEntry
}

ChangeSet holds the result of the reconciliation of an object collection.

func NewChangeSet 

func NewChangeSet() *ChangeSet

NewChangeSet returns a ChangeSet will an empty slice of entries.

func (*ChangeSet) Add 

func (c *ChangeSet) Add(e ChangeSetEntry)

Add appends the given entry to the end of the slice.

func (*ChangeSet) Append 

func (c *ChangeSet) Append(e []ChangeSetEntry)

Append adds the given ChangeSet entries to end of the slice.

func (*ChangeSet) String 

func (c *ChangeSet) String() string

func (*ChangeSet) ToMap 

func (c *ChangeSet) ToMap() map[string]Action

func (*ChangeSet) ToObjMetadataSet added in v0.2.0 

func (c *ChangeSet) ToObjMetadataSet() object.ObjMetadataSet

type ChangeSetEntry 

type ChangeSetEntry struct {
	// ObjMetadata holds the unique identifier of this entry.
	ObjMetadata object.ObjMetadata

	// GroupVersion holds the API group version of this entry.
	GroupVersion string

	// Subject represents the Object ID in the format 'kind/namespace/name'.
	Subject string

	// Action represents the action type taken by the reconciler for this object.
	Action Action
}

ChangeSetEntry defines the result of an action performed on an object.

func (ChangeSetEntry) String 

func (e ChangeSetEntry) String() string

type DeleteOptions added in v0.3.0 

type DeleteOptions struct {
	// PropagationPolicy determined whether and how garbage collection will be
	// performed.
	PropagationPolicy metav1.DeletionPropagation

	// Inclusions determines which in-cluster objects are subject to deletion
	// based on the specified key-value pairs.
	// A nil Inclusions map means all objects are subject to deletion
	// irregardless of their metadata labels.
	Inclusions map[string]string

	// Exclusions determines which in-cluster objects are skipped from deletion
	// based on the specified key-value pairs.
	// A nil Exclusions map means all objects are subject to deletion
	// irregardless of their metadata labels and annotations.
	Exclusions map[string]string
}

DeleteOptions contains options for delete requests.

func DefaultDeleteOptions added in v0.3.0 

func DefaultDeleteOptions() DeleteOptions

DefaultDeleteOptions returns the default delete options where the propagation policy is set to background.

type DiffOptions added in v0.11.0 

type DiffOptions struct {
	// Exclusions determines which in-cluster objects are skipped from dry-run apply
	// based on the specified key-value pairs.
	// A nil Exclusions map means all objects are applied
	// regardless of their metadata labels and annotations.
	Exclusions map[string]string `json:"exclusions"`
}

DiffOptions contains options for server-side dry-run apply requests.

func DefaultDiffOptions added in v0.11.0 

func DefaultDiffOptions() DiffOptions

DefaultDiffOptions returns the default dry-run apply options.

type FieldManager added in v0.12.0 

type FieldManager struct {
	// Name is the name of the workflow managing fields.
	Name string `json:"name"`

	// OperationType is the type of operation performed by this manager, can be 'update' or 'apply'.
	OperationType metav1.ManagedFieldsOperationType `json:"operationType"`
}

FieldManager identifies a workflow that's managing fields.

type KindOrder added in v0.6.0 

type KindOrder struct {
	First []string
	Last  []string
}

type Owner 

type Owner struct {
	// Field sets the field manager name for the given server-side apply patch.
	Field string

	// Group sets the owner label key prefix.
	Group string
}

Owner contains options for setting the field manager and ownership labels group.

type ResourceManager 

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

ResourceManager reconciles Kubernetes resources onto the target cluster using server-side apply.

func NewResourceManager 

func NewResourceManager(client client.Client, poller *polling.StatusPoller, owner Owner) *ResourceManager

NewResourceManager creates a ResourceManager for the given Kubernetes client.

func (*ResourceManager) Apply 

func (m *ResourceManager) Apply(ctx context.Context, object *unstructured.Unstructured, opts ApplyOptions) (*ChangeSetEntry, error)

Apply performs a server-side apply of the given object if the matching in-cluster object is different or if it doesn't exist. Drift detection is performed by comparing the server-side dry-run result with the existing object. When immutable field changes are detected, the object is recreated if 'force' is set to 'true'.

func (*ResourceManager) ApplyAll 

func (m *ResourceManager) ApplyAll(ctx context.Context, objects []*unstructured.Unstructured, opts ApplyOptions) (*ChangeSet, error)

ApplyAll performs a server-side dry-run of the given objects, and based on the diff result, it applies the objects that are new or modified.

func (*ResourceManager) ApplyAllStaged 

func (m *ResourceManager) ApplyAllStaged(ctx context.Context, objects []*unstructured.Unstructured, opts ApplyOptions) (*ChangeSet, error)

ApplyAllStaged extracts the CRDs and Namespaces, applies them with ApplyAll, waits for CRDs and Namespaces to become ready, then is applies all the other objects. This function should be used when the given objects have a mix of custom resource definition and custom resources, or a mix of namespace definitions with namespaced objects.

func (*ResourceManager) Client 

func (m *ResourceManager) Client() client.Client

Client returns the underlying controller-runtime client.

func (*ResourceManager) Delete 

func (m *ResourceManager) Delete(ctx context.Context, object *unstructured.Unstructured, opts DeleteOptions) (*ChangeSetEntry, error)

Delete deletes the given object (not found errors are ignored).

func (*ResourceManager) DeleteAll 

func (m *ResourceManager) DeleteAll(ctx context.Context, objects []*unstructured.Unstructured, opts DeleteOptions) (*ChangeSet, error)

DeleteAll deletes the given set of objects (not found errors are ignored).

func (*ResourceManager) Diff 

func (m *ResourceManager) Diff(ctx context.Context, object *unstructured.Unstructured, opts DiffOptions) (
	*ChangeSetEntry,
	*unstructured.Unstructured,
	*unstructured.Unstructured,
	error,
)

Diff performs a server-side apply dry-un and returns the live and merged objects if drift is detected. If the diff contains Kubernetes Secrets, the data values are masked.

func (*ResourceManager) GetOwnerLabels 

func (m *ResourceManager) GetOwnerLabels(name, namespace string) map[string]string

GetOwnerLabels returns a map of labels for the specified name and namespace.

func (*ResourceManager) SetConcurrency added in v0.31.0 

func (m *ResourceManager) SetConcurrency(c int)

SetConcurrency sets how many goroutines execute concurrently to check for config drift when applying changes.

func (*ResourceManager) SetOwnerLabels 

func (m *ResourceManager) SetOwnerLabels(objects []*unstructured.Unstructured, name, namespace string)

SetOwnerLabels adds the ownership labels to the given objects. The ownership labels are in the format: 

<owner.group>/name: <name>
<owner.group>/namespace: <namespace>

func (*ResourceManager) Wait 

func (m *ResourceManager) Wait(objects []*unstructured.Unstructured, opts WaitOptions) error

Wait checks if the given set of objects has been fully reconciled.

func (*ResourceManager) WaitForSet added in v0.2.0 

func (m *ResourceManager) WaitForSet(set object.ObjMetadataSet, opts WaitOptions) error

WaitForSet checks if the given set of FmtObjMetadata has been fully reconciled.

func (*ResourceManager) WaitForTermination 

func (m *ResourceManager) WaitForTermination(objects []*unstructured.Unstructured, opts WaitOptions) error

WaitForTermination waits for the given objects to be deleted from the cluster.

type SortableMetas 

type SortableMetas []object.ObjMetadata

func (SortableMetas) Len 

func (a SortableMetas) Len() int

func (SortableMetas) Less 

func (a SortableMetas) Less(i, j int) bool

func (SortableMetas) Swap 

func (a SortableMetas) Swap(i, j int)

type SortableUnstructureds 

type SortableUnstructureds []*unstructured.Unstructured

func (SortableUnstructureds) Len 

func (a SortableUnstructureds) Len() int

func (SortableUnstructureds) Less 

func (a SortableUnstructureds) Less(i, j int) bool

func (SortableUnstructureds) Swap 

func (a SortableUnstructureds) Swap(i, j int)

type WaitOptions added in v0.3.0 

type WaitOptions struct {
	// Interval defines how often to poll the cluster for the latest state of the resources.
	Interval time.Duration

	// Timeout defines after which interval should the engine give up on waiting for resources
	// to become ready.
	Timeout time.Duration

	// FailFast makes the Wait function return an error as soon as a resource reaches the failed state.
	FailFast bool
}

WaitOptions contains options for wait requests.

func DefaultWaitOptions added in v0.3.0 

func DefaultWaitOptions() WaitOptions

DefaultWaitOptions returns the default wait options where the poll interval is set to five seconds and the timeout to one minute.

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