Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func DefineTestSuite

func DefineTestSuite(driver TestDriver, tsInits []func() TestSuite)

DefineTestSuite defines tests for all testpatterns and all testSuites for a driver

func GetDriverNameWithFeatureTags

func GetDriverNameWithFeatureTags(driver TestDriver) string

GetDriverNameWithFeatureTags returns driver name with feature tags For example)

- [Driver: nfs]
- [Driver: rbd][Feature:Volumes]

func GetSnapshotClass

func GetSnapshotClass(
	snapshotter string,
	parameters map[string]string,
	ns string,
	suffix string,
) *unstructured.Unstructured

GetSnapshotClass constructs a new SnapshotClass instance with a unique name that is based on namespace + suffix.

func GetStorageClass

func GetStorageClass(
	provisioner string,
	parameters map[string]string,
	bindingMode *storagev1.VolumeBindingMode,
	ns string,
	suffix string,
) *storagev1.StorageClass

GetStorageClass constructs a new StorageClass instance with a unique name that is based on namespace + suffix.

func PVMultiNodeCheck

func PVMultiNodeCheck(client clientset.Interface, claim *v1.PersistentVolumeClaim, volume *v1.PersistentVolume, node NodeSelection)

PVMultiNodeCheck checks that a PV retains data when moved between nodes.

It starts these pods: - The first pod writes 'hello word' to the /mnt/test (= the volume) on one node. - The second pod runs grep 'hello world' on /mnt/test on another node.

The first node is selected by Kubernetes when scheduling the first pod. The second pod uses the same criteria, except that a special anti-affinity for the first node gets added. This test can only pass if the cluster has more than one suitable node. The caller has to ensure that.

If all succeeds, Kubernetes actually allocated something that is persistent across pods and across nodes.

This is a common test that can be called from a StorageClassTest.PvCheck.

func PVWriteReadSingleNodeCheck

func PVWriteReadSingleNodeCheck(client clientset.Interface, claim *v1.PersistentVolumeClaim, volume *v1.PersistentVolume, node NodeSelection)

PVWriteReadSingleNodeCheck checks that a PV retains data on a single node.

It starts two pods: - The first pod writes 'hello word' to the /mnt/test (= the volume) on one node. - The second pod runs grep 'hello world' on /mnt/test on the same node.

The node is selected by Kubernetes when scheduling the first pod. It's then selected via its name for the second pod.

If both succeed, Kubernetes actually allocated something that is persistent across pods.

This is a common test that can be called from a StorageClassTest.PvCheck.

func RunInPodWithVolume

func RunInPodWithVolume(c clientset.Interface, ns, claimName, podName, command string, node NodeSelection)

RunInPodWithVolume runs a command in a pod with given claim mounted to /mnt directory. It starts, checks, collects output and stops it.

func StartInPodWithVolume

func StartInPodWithVolume(c clientset.Interface, ns, claimName, podName, command string, node NodeSelection) *v1.Pod

StartInPodWithVolume starts a command in a pod with given claim mounted to /mnt directory The caller is responsible for checking the pod and deleting it.

func StartPodLogs

func StartPodLogs(f *framework.Framework) func()

StartPodLogs begins capturing log output and events from current and future pods running in the namespace of the framework. That ends when the returned cleanup function is called.

The output goes to log files (when using --report-dir, as in the CI) or the output stream (otherwise).

func StopPod

func StopPod(c clientset.Interface, pod *v1.Pod)

StopPod first tries to log the output of the pod's container, then deletes the pod.

func SubpathTestPod

func SubpathTestPod(f *framework.Framework, subpath, volumeType string, source *v1.VolumeSource, privilegedSecurityContext bool) *v1.Pod

SubpathTestPod returns a pod spec for subpath tests

func TestBasicSubpath

func TestBasicSubpath(f *framework.Framework, contents string, pod *v1.Pod)

TestBasicSubpath runs basic subpath test

func TestBasicSubpathFile

func TestBasicSubpathFile(f *framework.Framework, contents string, pod *v1.Pod, filepath string)

TestBasicSubpathFile runs basic subpath file test

func WaitForSnapshotReady

func WaitForSnapshotReady(c dynamic.Interface, ns string, snapshotName string, Poll, timeout time.Duration) error

WaitForSnapshotReady waits for a VolumeSnapshot to be ready to use or until timeout occurs, whichever comes first.

Types

type Capability

type Capability string

Capability represents a feature that a volume plugin supports

const (
	CapPersistence Capability = "persistence" // data is persisted across pod restarts
	CapBlock       Capability = "block"       // raw block mode
	CapFsGroup     Capability = "fsGroup"     // volume ownership via fsGroup
	CapExec        Capability = "exec"        // exec a file in the volume
	CapDataSource  Capability = "dataSource"  // support populate data from snapshot

	// multiple pods on a node can use the same volume concurrently;
	// for CSI, see:
	// - https://github.com/container-storage-interface/spec/pull/150
	// - https://github.com/container-storage-interface/spec/issues/178
	// - NodeStageVolume in the spec
	CapMultiPODs Capability = "multipods"
)

type DriverInfo

type DriverInfo struct {
	Name       string // Name of the driver, aka the provisioner name.
	FeatureTag string // FeatureTag for the driver

	MaxFileSize          int64               // Max file size to be tested for this driver
	SupportedFsType      sets.String         // Map of string for supported fs type
	SupportedMountOption sets.String         // Map of string for supported mount option
	RequiredMountOption  sets.String         // Map of string for required mount option (Optional)
	Capabilities         map[Capability]bool // Map that represents plugin capabilities
}

DriverInfo represents static information about a TestDriver.

type DynamicPVTestDriver

type DynamicPVTestDriver interface {
	TestDriver
	// GetDynamicProvisionStorageClass returns a StorageClass dynamic provision Persistent Volume.
	// It will set fsType to the StorageClass, if TestDriver supports it.
	// It will return nil, if the TestDriver doesn't support it.
	GetDynamicProvisionStorageClass(config *PerTestConfig, fsType string) *storagev1.StorageClass

	// GetClaimSize returns the size of the volume that is to be provisioned ("5Gi", "1Mi").
	// The size must be chosen so that the resulting volume is large enough for all
	// enabled tests and within the range supported by the underlying storage.
	GetClaimSize() string
}

DynamicPVTestDriver represents an interface for a TestDriver that supports DynamicPV

type InlineVolumeTestDriver

type InlineVolumeTestDriver interface {
	PreprovisionedVolumeTestDriver

	// GetVolumeSource returns a volumeSource for inline volume.
	// It will set readOnly and fsType to the volumeSource, if TestDriver supports both of them.
	// It will return nil, if the TestDriver doesn't support either of the parameters.
	GetVolumeSource(readOnly bool, fsType string, testVolume TestVolume) *v1.VolumeSource
}

InlineVolumeTestDriver represents an interface for a TestDriver that supports InlineVolume

type NodeSelection

type NodeSelection struct {
	Name     string
	Selector map[string]string
	Affinity *v1.Affinity
}

NodeSelection specifies where to run a pod, using a combination of fixed node name, node selector and/or affinity.

type PerTestConfig

type PerTestConfig struct {
	// The test driver for the test.
	Driver TestDriver

	// Some short word that gets inserted into dynamically
	// generated entities (pods, paths) as first part of the name
	// to make debugging easier. Can be the same for different
	// tests inside the test suite.
	Prefix string

	// The framework instance allocated for the current test.
	Framework *framework.Framework

	// If non-empty, then pods using a volume will be scheduled
	// onto the node with this name. Otherwise Kubernetes will
	// pick a node.
	ClientNodeName string

	// Some tests also support scheduling pods onto nodes with
	// these label/value pairs. As not all tests use this field,
	// a driver that absolutely needs the pods on a specific
	// node must use ClientNodeName.
	ClientNodeSelector map[string]string

	// Some test drivers initialize a storage server. This is
	// the configuration that then has to be used to run tests.
	// The values above are ignored for such tests.
	ServerConfig *framework.VolumeTestConfig
}

PerTestConfig represents parameters that control test execution. One instance gets allocated for each test and is then passed via pointer to functions involved in the test.

func (*PerTestConfig) GetUniqueDriverName

func (config *PerTestConfig) GetUniqueDriverName() string

GetUniqueDriverName returns unique driver name that can be used parallelly in tests

type PreprovisionedPVTestDriver

type PreprovisionedPVTestDriver interface {
	PreprovisionedVolumeTestDriver
	// GetPersistentVolumeSource returns a PersistentVolumeSource with volume node affinity for pre-provisioned Persistent Volume.
	// It will set readOnly and fsType to the PersistentVolumeSource, if TestDriver supports both of them.
	// It will return nil, if the TestDriver doesn't support either of the parameters.
	GetPersistentVolumeSource(readOnly bool, fsType string, testVolume TestVolume) (*v1.PersistentVolumeSource, *v1.VolumeNodeAffinity)
}

PreprovisionedPVTestDriver represents an interface for a TestDriver that supports PreprovisionedPV

type PreprovisionedVolumeTestDriver

type PreprovisionedVolumeTestDriver interface {
	TestDriver
	// CreateVolume creates a pre-provisioned volume of the desired volume type.
	CreateVolume(config *PerTestConfig, volumeType testpatterns.TestVolType) TestVolume
}

PreprovisionedVolumeTestDriver represents an interface for a TestDriver that has pre-provisioned volume

type SnapshotClassTest

type SnapshotClassTest struct {
	Name           string
	CloudProviders []string
	Snapshotter    string
	Parameters     map[string]string
	NodeName       string
	NodeSelector   map[string]string // NodeSelector for the pod
}

type SnapshottableTestDriver

type SnapshottableTestDriver interface {
	TestDriver
	// GetSnapshotClass returns a SnapshotClass to create snapshot.
	// It will return nil, if the TestDriver doesn't support it.
	GetSnapshotClass(config *PerTestConfig) *unstructured.Unstructured
}

SnapshottableTestDriver represents an interface for a TestDriver that supports DynamicSnapshot

type StorageClassTest

type StorageClassTest struct {
	Client               clientset.Interface
	Claim                *v1.PersistentVolumeClaim
	Class                *storage.StorageClass
	Name                 string
	CloudProviders       []string
	Provisioner          string
	StorageClassName     string
	Parameters           map[string]string
	DelayBinding         bool
	ClaimSize            string
	ExpectedSize         string
	PvCheck              func(claim *v1.PersistentVolumeClaim, volume *v1.PersistentVolume)
	VolumeMode           *v1.PersistentVolumeMode
	AllowVolumeExpansion bool
}

StorageClassTest represents parameters to be used by provisioning tests. Not all parameters are used by all tests.

func (StorageClassTest) TestBindingWaitForFirstConsumer

func (t StorageClassTest) TestBindingWaitForFirstConsumer(nodeSelector map[string]string, expectUnschedulable bool) (*v1.PersistentVolume, *v1.Node)

func (StorageClassTest) TestBindingWaitForFirstConsumerMultiPVC

func (t StorageClassTest) TestBindingWaitForFirstConsumerMultiPVC(claims []*v1.PersistentVolumeClaim, nodeSelector map[string]string, expectUnschedulable bool) ([]*v1.PersistentVolume, *v1.Node)

func (StorageClassTest) TestDynamicProvisioning

func (t StorageClassTest) TestDynamicProvisioning() *v1.PersistentVolume

TestDynamicProvisioning tests dynamic provisioning with specified StorageClassTest

type TestDriver

type TestDriver interface {
	// GetDriverInfo returns DriverInfo for the TestDriver. This must be static
	// information.
	GetDriverInfo() *DriverInfo

	// SkipUnsupportedTest skips test if Testpattern is not
	// suitable to test with the TestDriver. It gets called after
	// parsing parameters of the test suite and before the
	// framework is initialized. Cheap tests that just check
	// parameters like the cloud provider can and should be
	// done in SkipUnsupportedTest to avoid setting up more
	// expensive resources like framework.Framework. Tests that
	// depend on a connection to the cluster can be done in
	// PrepareTest once the framework is ready.
	SkipUnsupportedTest(testpatterns.TestPattern)

	// PrepareTest is called at test execution time each time a new test case is about to start.
	// It sets up all necessary resources and returns the per-test configuration
	// plus a cleanup function that frees all allocated resources.
	PrepareTest(f *framework.Framework) (*PerTestConfig, func())
}

TestDriver represents an interface for a driver to be tested in TestSuite. Except for GetDriverInfo, all methods will be called at test runtime and thus can use framework.Skipf, framework.Fatal, Gomega assertions, etc.

type TestResource

type TestResource interface {

	// contains filtered or unexported methods

}

TestResource represents an interface for resources that is used by TestSuite

type TestSuite

type TestSuite interface {

	// contains filtered or unexported methods

}

TestSuite represents an interface for a set of tests which works with TestDriver

func InitProvisioningTestSuite

func InitProvisioningTestSuite() TestSuite

InitProvisioningTestSuite returns provisioningTestSuite that implements TestSuite interface

func InitSnapshottableTestSuite

func InitSnapshottableTestSuite() TestSuite

InitSnapshottableTestSuite returns snapshottableTestSuite that implements TestSuite interface

func InitSubPathTestSuite

func InitSubPathTestSuite() TestSuite

InitSubPathTestSuite returns subPathTestSuite that implements TestSuite interface

func InitVolumeIOTestSuite

func InitVolumeIOTestSuite() TestSuite

InitVolumeIOTestSuite returns volumeIOTestSuite that implements TestSuite interface

func InitVolumeModeTestSuite

func InitVolumeModeTestSuite() TestSuite

InitVolumeModeTestSuite returns volumeModeTestSuite that implements TestSuite interface

func InitVolumesTestSuite

func InitVolumesTestSuite() TestSuite

InitVolumesTestSuite returns volumesTestSuite that implements TestSuite interface

type TestSuiteInfo

type TestSuiteInfo struct {

	// contains filtered or unexported fields

}

TestSuiteInfo represents a set of parameters for TestSuite

type TestVolume

type TestVolume interface {
	DeleteVolume()
}

TestVolume is the result of PreprovisionedVolumeTestDriver.CreateVolume. The only common functionality is to delete it. Individual driver interfaces have additional methods that work with volumes created by them.

func CreateVolume

func CreateVolume(driver TestDriver, config *PerTestConfig, volType testpatterns.TestVolType) TestVolume

CreateVolume creates volume for test unless dynamicPV test