cache

Documentation

Index

• Constants
• type LiveStateCache
  • func NewLiveStateCache(db db.ArgoDB, appInformer cache.SharedIndexInformer, ...) LiveStateCache
• type NodeInfo
• type ObjectUpdatedHandler
• type PodInfo
• type ResourceInfo

Constants

const (
	// EnvClusterCacheResyncDuration is the env variable that holds cluster cache re-sync duration
	EnvClusterCacheResyncDuration = "ARGOCD_CLUSTER_CACHE_RESYNC_DURATION"

	// EnvClusterCacheWatchResyncDuration is the env variable that holds cluster cache watch re-sync duration
	EnvClusterCacheWatchResyncDuration = "ARGOCD_CLUSTER_CACHE_WATCH_RESYNC_DURATION"

	// EnvClusterRetryTimeoutDuration is the env variable that holds cluster retry duration when sync error happens
	EnvClusterSyncRetryTimeoutDuration = "ARGOCD_CLUSTER_SYNC_RETRY_TIMEOUT_DURATION"

	// EnvClusterCacheListPageSize is the env variable to control size of the list page size when making K8s queries
	EnvClusterCacheListPageSize = "ARGOCD_CLUSTER_CACHE_LIST_PAGE_SIZE"

	// EnvClusterCacheListSemaphore is the env variable to control size of the list semaphore
	// This is used to limit the number of concurrent memory consuming operations on the
	// k8s list queries results across all clusters to avoid memory spikes during cache initialization.
	EnvClusterCacheListSemaphore = "ARGOCD_CLUSTER_CACHE_LIST_SEMAPHORE"

	// EnvClusterCacheRetryLimit is the env variable to control the retry limit for listing resources during cluster cache sync
	EnvClusterCacheAttemptLimit = "ARGOCD_CLUSTER_CACHE_ATTEMPT_LIMIT"

	// EnvClusterCacheRetryUseBackoff is the env variable to control whether to use a backoff strategy with the retry during cluster cache sync
	EnvClusterCacheRetryUseBackoff = "ARGOCD_CLUSTER_CACHE_RETRY_USE_BACKOFF"
)

Types

type LiveStateCache

type LiveStateCache interface {
	// Returns k8s server version
	GetVersionsInfo(serverURL string) (string, []kube.APIResourceInfo, error)
	// Returns true of given group kind is a namespaced resource
	IsNamespaced(server string, gk schema.GroupKind) (bool, error)
	// Returns synced cluster cache
	GetClusterCache(server string) (clustercache.ClusterCache, error)
	// Executes give callback against resource specified by the key and all its children
	IterateHierarchy(server string, key kube.ResourceKey, action func(child appv1.ResourceNode, appName string) bool) error
	// Returns state of live nodes which correspond for target nodes of specified application.
	GetManagedLiveObjs(a *appv1.Application, targetObjs []*unstructured.Unstructured) (map[kube.ResourceKey]*unstructured.Unstructured, error)
	// IterateResources iterates all resource stored in cache
	IterateResources(server string, callback func(res *clustercache.Resource, info *ResourceInfo)) error
	// Returns all top level resources (resources without owner references) of a specified namespace
	GetNamespaceTopLevelResources(server string, namespace string) (map[kube.ResourceKey]appv1.ResourceNode, error)
	// Starts watching resources of each controlled cluster.
	Run(ctx context.Context) error
	// Returns information about monitored clusters
	GetClustersInfo() []clustercache.ClusterInfo
	// Init must be executed before cache can be used
	Init() error
}

func NewLiveStateCache

func NewLiveStateCache(
	db db.ArgoDB,
	appInformer cache.SharedIndexInformer,
	settingsMgr *settings.SettingsManager,
	kubectl kube.Kubectl,
	metricsServer *metrics.MetricsServer,
	onObjectUpdated ObjectUpdatedHandler,
	clusterFilter func(cluster *appv1.Cluster) bool,
	resourceTracking argo.ResourceTracking) LiveStateCache

type NodeInfo

type NodeInfo struct {
	Name       string
	Capacity   v1.ResourceList
	SystemInfo v1.NodeSystemInfo
}

type ObjectUpdatedHandler

type ObjectUpdatedHandler = func(managedByApp map[string]bool, ref v1.ObjectReference)

type PodInfo

type PodInfo struct {
	NodeName         string
	ResourceRequests v1.ResourceList
	Phase            v1.PodPhase
}

type ResourceInfo

type ResourceInfo struct {
	Info    []appv1.InfoItem
	AppName string
	Images  []string
	Health  *health.HealthStatus
	// NetworkingInfo are available only for known types involved into networking: Ingress, Service, Pod
	NetworkingInfo *appv1.ResourceNetworkingInfo
	// PodInfo is available for pods only
	PodInfo *PodInfo
	// NodeInfo is available for nodes only
	NodeInfo *NodeInfo
}