metrics

const (

	// CreateSnapshotOperationName is the operation that tracks how long the controller takes to create a snapshot.
	// Specifically, the operation metric is emitted based on the following timestamps:
	// - Start_time: controller notices the first time that there is a new VolumeSnapshot CR to dynamically provision a snapshot
	// - End_time:   controller notices that the CR has a status with CreationTime field set to be non-nil
	CreateSnapshotOperationName = "CreateSnapshot"

	// CreateSnapshotAndReadyOperationName is the operation that tracks how long the controller takes to create a snapshot and for it to be ready.
	// Specifically, the operation metric is emitted based on the following timestamps:
	// - Start_time: controller notices the first time that there is a new VolumeSnapshot CR(both dynamic and pre-provisioned cases)
	// - End_time:   controller notices that the CR has a status with Ready field set to be true
	CreateSnapshotAndReadyOperationName = "CreateSnapshotAndReady"

	// DeleteSnapshotOperationName is the operation that tracks how long a snapshot deletion takes.
	// Specifically, the operation metric is emitted based on the following timestamps:
	// - Start_time: controller notices the first time that there is a deletion timestamp placed on the VolumeSnapshot CR and the CR is ready to be deleted. Note that if the CR is being used by a PVC for rehydration, the controller should *NOT* set the start_time.
	// - End_time: controller removed all finalizers on the VolumeSnapshot CR such that the CR is ready to be removed in the API server.
	DeleteSnapshotOperationName = "DeleteSnapshot"

	// DynamicSnapshotType represents a snapshot that is being dynamically provisioned
	DynamicSnapshotType = snapshotProvisionType("dynamic")
	// PreProvisionedSnapshotType represents a snapshot that is pre-provisioned
	PreProvisionedSnapshotType = snapshotProvisionType("pre-provisioned")

	// SnapshotStatusTypeUnknown represents that the status is unknown
	SnapshotStatusTypeUnknown snapshotStatusType = "unknown"
	// Success and Cancel are statuses for operation time (operation_total_seconds) as seen by snapshot controller
	// SnapshotStatusTypeSuccess represents that a CreateSnapshot, CreateSnapshotAndReady,
	// or DeleteSnapshot has finished successfully.
	// Individual reconciliations (reconciliation_total_seconds) also use this status.
	SnapshotStatusTypeSuccess snapshotStatusType = "success"
	// SnapshotStatusTypeCancel represents that a CreateSnapshot, CreateSnapshotAndReady,
	// or DeleteSnapshot has been deleted before finishing.
	SnapshotStatusTypeCancel snapshotStatusType = "cancel"
)