client

package
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 Go to latest Published: May 2, 2024 License: Apache-2.0 Imports: 30 Imported by: 0

Documentation

Overview

package client provides a client for tests.

This Client can operate on any k8s resource struct type, core or custom, via the runtime.Object interface. As well as the usual Create, Get, Update, Delete it supports Watch and provides some convenience methods for tests.

Most tests should use the singleton client returned by Get(). Avoiding creation of multiple clients saves significant time in a test suite.

Index

Constants

View Source 
const (
	// LabelKey is the create label key for the Get() client.
	LabelKey = "test-client"
	// LabelValue is the create label value for the Get() client.
	LabelValue = "true"
)

Variables

View Source 
var (
	ErrWatchClosed = errors.New("watch closed")
	ErrTimeout     = errors.New("timeout")
)

Functions

func ClusterLogForwarderReady 

func ClusterLogForwarderReady(e watch.Event) (bool, error)

func ClusterLogForwarderValidationFailure 

func ClusterLogForwarderValidationFailure(e watch.Event) (bool, error)

ClusterLogForwarderValidationFailure expects condition type "Validation" to be set on the ClusterLogForwarder resource. If no such condition can be found, it returns false, and a nil error (so that c.WaitFor can wait until the condition is set, or time out if the condition is never set). If the condition is set, we expect its message to match clfvalidation.ValidateClusterLoggingDependencyMSG and we expect it to be "True". We also expect the "Ready" condition to be "False". In that case, we return true and no error. In case of the contrary, we return false and an error.

func Deleted 

func Deleted(e watch.Event) (bool, error)

Deleted is a condition for Client.WaitFor true when the event is of type Deleted.

func IgnoreAlreadyExists 

func IgnoreAlreadyExists(err error) error

IgnoreAlreadyExists returns nil on AlreadyExists errors, other values returned unmodified.

func IgnoreNotFound 

func IgnoreNotFound(err error) error

IgnoreNotFound returns nil on NotFound errors, other values returned unmodified.

func IsDaemonSetReady 

func IsDaemonSetReady(e watch.Event) (bool, error)

DaemonSetIsReady returns (true, nil) when the pods of the set are ready on all nodes in the cluster and (false, nil) otherwise.

func PodFailed 

func PodFailed(e watch.Event) (bool, error)

PodFailed returns (true,nil) when e.Object is a Pod with phase PodFailed. Returns an error if pod reaches any other long-lasting state [failed, succeeded ,running]

func PodRunning 

func PodRunning(e watch.Event) (bool, error)

PodRunning returns (true,nil) when e.Object is a Pod with phase PodRunning. Returns an error if pod reaches any other long-lasting state [failed, succeeded ,running]

func PodSucceeded 

func PodSucceeded(e watch.Event) (bool, error)

PodSucceeded returns (true,nil) when e.Object is a Pod with phase PodSucceeded. Returns an error if pod reaches any other long-lasting state [failed, succeeded ,running]

func RouteReady 

func RouteReady(e watch.Event) (bool, error)

Types

type Client 

type Client struct {
	Labels map[string]string
	// contains filtered or unexported fields
}

Client operates on any runtime.Object (core or custom) and has Watch to wait efficiently.

func Get 

func Get() *Client

Get returns a process-wide singleton client, created on demand. Uses defaults: DefaultTimeout, LabelKey, LabelValue.

func New 

func New(cfg *rest.Config, timeout time.Duration, labels map[string]string) (*Client, error)

New client.

Operations will fail if they take longer than timeout. The Labels will be applied to each object created by the client.

func (*Client) Cfg 

func (c *Client) Cfg() *rest.Config

Cfg returns the the client's rest.Config

func (*Client) ContainerLogStream 

func (c *Client) ContainerLogStream(namespace, podName, containerName string, follow bool) (io.ReadCloser, error)

ContainerLogStream returns the log stream for a container. Empty containerName means default container.

func (*Client) ContainerLogs 

func (c *Client) ContainerLogs(namespace, podName, containerName string) string

ContainerLogs returns the pod logs, or an error string if there is a problem reading them. Empty containerName means default container.

func (*Client) ControllerRuntimeClient 

func (c *Client) ControllerRuntimeClient() crclient.Client

ControllerRuntimeClient returns the underlying controller runtime Client

func (*Client) Create 

func (c *Client) Create(o crclient.Object) (err error)

Create the cluster resource described by the struct o.

func (*Client) Delete 

func (c *Client) Delete(o crclient.Object) (err error)

Delete the of resource with name, namespace and type of o.

func (*Client) Get 

func (c *Client) Get(o crclient.Object) (err error)

Get the resource with the name, namespace and type of o, copy it's state into o.

func (*Client) GroupVersionResource 

func (c *Client) GroupVersionResource(o crclient.Object) (schema.GroupVersionResource, error)

GroupVersionResource uses the Client's RESTMapping to find the resource name for o.

func (*Client) Host 

func (c *Client) Host() string

Host returns the API host or URL used by the client's rest.Config.

func (*Client) List 

func (c *Client) List(list crclient.ObjectList, opts ...ListOption) (err error)

List resources, return results in o, which must be an xxxList struct.

func (*Client) Recreate 

func (c *Client) Recreate(o crclient.Object) (err error)

Recreate creates o after removing any existing object of the same name and type.

func (*Client) Remove 

func (c *Client) Remove(o crclient.Object) (err error)

Remove is like Delete but ignores NotFound errors.

func (*Client) RemoveSync 

func (c *Client) RemoveSync(o crclient.Object) (err error)

RemoveSync is like Delete but ignores NotFound errors and deletes in the foreground

func (*Client) Timeout 

func (c *Client) Timeout() time.Duration

func (*Client) Update 

func (c *Client) Update(o crclient.Object) (err error)

Update the state of resource with name, namespace and type of o using the state in o.

func (*Client) WaitFor 

func (c *Client) WaitFor(o client.Object, condition Condition) (err error)

WaitFor watches o until condition() returns true or error, or c.Timeout expires. It is not an error if o does not exist, it will be waited for. o is updated from the last object seen by the watch.

func (*Client) WaitForType 

func (c *Client) WaitForType(o client.Object, condition Condition, opts ...ListOption) (err error)

WaitForType watches for events involving objects of the same type as o, until condition() returns true or error, or c.Timeout expires. o is updated from the last object seen by the watch.

func (*Client) Watch 

func (c *Client) Watch(gvr schema.GroupVersionResource, opts ...ListOption) (w watch.Interface, err error)

Watch for changes in namespace to objects with the given GroupVersionResource, apply the given list options to the watch.

func (*Client) WatchObject 

func (c *Client) WatchObject(o client.Object) (w watch.Interface, err error)

WatchObject returns a watch for changes to a single named object. Note: it is not an error if no such object exists, the watcher will wait for creation.

func (*Client) WatchTypeOf 

func (c *Client) WatchTypeOf(o client.Object, opts ...ListOption) (w watch.Interface, err error)

WatchTypeOf returns a watch using the GroupVersionResource of object o.

func (*Client) WithLabels 

func (c *Client) WithLabels(labels map[string]string) *Client

WithLabels returns a client that uses c but has a different set of Create Labels.

func (*Client) WithTimeout 

func (c *Client) WithTimeout(timeout time.Duration) *Client

WithTimeout returns a client that uses c but has a different timeout.

type Condition 

type Condition func(watch.Event) (bool, error)

Condition returns true if an event meets the condition, error if something goes wrong.

type Continue 

type Continue = crclient.Continue

type HasLabels 

type HasLabels = crclient.HasLabels

type InNamespace 

type InNamespace = crclient.InNamespace

type Limit 

type Limit = crclient.Limit

type ListOption 

type ListOption = crclient.ListOption

List options aliased from crclient

type ListOptions 

type ListOptions = crclient.ListOptions

type MatchingFields 

type MatchingFields = crclient.MatchingFields

type MatchingFieldsSelector 

type MatchingFieldsSelector = crclient.MatchingFieldsSelector

type MatchingLabels 

type MatchingLabels = crclient.MatchingLabels

type MatchingLabelsSelector 

type MatchingLabelsSelector = crclient.MatchingLabelsSelector

type NamespaceClient 

type NamespaceClient struct {
	Test
}

NamespaceClient wraps the singleton test client for use with hack testing

func NewNamespaceClient 

func NewNamespaceClient() *NamespaceClient

func (*NamespaceClient) Close 

func (t *NamespaceClient) Close()

type Test 

type Test struct {
	*Client
	NS *corev1.Namespace
}

Test wraps the singleton test client with setup/teardown and convenience methods for testing.

func ForTest 

func ForTest(t *testing.T) *Test

ForTest returns a Test for a testing.T. The client.Test is closed when the test ends.

func NewTest 

func NewTest(testOptions ...TestOption) *Test

NewTest creates a new Test, which includes creating a new test namespace.

func (*Test) Close 

func (t *Test) Close()

Close removes the test namespace unless called from a failed test.

type TestOption 

type TestOption string

TestOption is an option to alter a test in some way 

const (
	//UseInfraNamespaceTestOption is the option to hint the test should be run in an infrastructure namespace
	UseInfraNamespaceTestOption TestOption = "useInfraNamespace"

	//DryRunTestOption is a hint to use in testing to not actually create resources against cluster (e.g. unit tests)
	DryRunTestOption TestOption = "dryRun"
)

type TestOptions 

type TestOptions []TestOption

func (TestOptions) Include 

func (options TestOptions) Include(option TestOption) bool

Source Files

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