record

package
Version: v1.5.8 Latest Latest
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Published: Sep 30, 2017 License: Apache-2.0 Imports: 19 Imported by: 0

Documentation

Overview

Package record has all client logic for recording and reporting events.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func DefaultEventFilterFunc added in v1.2.0

func DefaultEventFilterFunc(event *api.Event) bool

DefaultEventFilterFunc returns false for all incoming events

func EventAggregatorByReasonFunc added in v1.2.0

func EventAggregatorByReasonFunc(event *api.Event) (string, string)

EventAggregatorByReasonFunc aggregates events by exact match on event.Source, event.InvolvedObject, event.Type and event.Reason

func EventAggregatorByReasonMessageFunc added in v1.2.0

func EventAggregatorByReasonMessageFunc(event *api.Event) string

EventAggregratorByReasonMessageFunc returns an aggregate message by prefixing the incoming message

Types

type EventAggregator added in v1.2.0

type EventAggregator struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

EventAggregator identifies similar events and aggregates them into a single event

func NewEventAggregator added in v1.2.0

func NewEventAggregator(lruCacheSize int, keyFunc EventAggregatorKeyFunc, messageFunc EventAggregatorMessageFunc,
	maxEvents int, maxIntervalInSeconds int, clock clock.Clock) *EventAggregator

NewEventAggregator returns a new instance of an EventAggregator

func (*EventAggregator) EventAggregate added in v1.2.0

func (e *EventAggregator) EventAggregate(newEvent *api.Event) (*api.Event, error)

EventAggregate identifies similar events and groups into a common event if required

type EventAggregatorKeyFunc added in v1.2.0

type EventAggregatorKeyFunc func(event *api.Event) (aggregateKey string, localKey string)

EventAggregatorKeyFunc is responsible for grouping events for aggregation It returns a tuple of the following: aggregateKey - key the identifies the aggregate group to bucket this event localKey - key that makes this event in the local group

type EventAggregatorMessageFunc added in v1.2.0

type EventAggregatorMessageFunc func(event *api.Event) string

EventAggregatorMessageFunc is responsible for producing an aggregation message

type EventBroadcaster added in v0.15.0

type EventBroadcaster interface {
	// StartEventWatcher starts sending events received from this EventBroadcaster to the given
	// event handler function. The return value can be ignored or used to stop recording, if
	// desired.
	StartEventWatcher(eventHandler func(*api.Event)) watch.Interface

	// StartRecordingToSink starts sending events received from this EventBroadcaster to the given
	// sink. The return value can be ignored or used to stop recording, if desired.
	StartRecordingToSink(sink EventSink) watch.Interface

	// StartLogging starts sending events received from this EventBroadcaster to the given logging
	// function. The return value can be ignored or used to stop recording, if desired.
	StartLogging(logf func(format string, args ...interface{})) watch.Interface

	// NewRecorder returns an EventRecorder that can be used to send events to this EventBroadcaster
	// with the event source set to the given event source.
	NewRecorder(source api.EventSource) EventRecorder
}

EventBroadcaster knows how to receive events and send them to any EventSink, watcher, or log.

func NewBroadcaster added in v0.15.0

func NewBroadcaster() EventBroadcaster

Creates a new event broadcaster.

func NewBroadcasterForTests added in v1.3.0

func NewBroadcasterForTests(sleepDuration time.Duration) EventBroadcaster

type EventCorrelateResult added in v1.2.0

type EventCorrelateResult struct {
	// the event after correlation
	Event *api.Event
	// if provided, perform a strategic patch when updating the record on the server
	Patch []byte
	// if true, do no further processing of the event
	Skip bool
}

EventCorrelateResult is the result of a Correlate

type EventCorrelator added in v1.2.0

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

EventCorrelator processes all incoming events and performs analysis to avoid overwhelming the system. It can filter all incoming events to see if the event should be filtered from further processing. It can aggregate similar events that occur frequently to protect the system from spamming events that are difficult for users to distinguish. It performs de-duplication to ensure events that are observed multiple times are compacted into a single event with increasing counts.

func NewEventCorrelator added in v1.2.0

func NewEventCorrelator(clock clock.Clock) *EventCorrelator

NewEventCorrelator returns an EventCorrelator configured with default values.

The EventCorrelator is responsible for event filtering, aggregating, and counting prior to interacting with the API server to record the event.

The default behavior is as follows:

  • No events are filtered from being recorded
  • Aggregation is performed if a similar event is recorded 10 times in a in a 10 minute rolling interval. A similar event is an event that varies only by the Event.Message field. Rather than recording the precise event, aggregation will create a new event whose message reports that it has combined events with the same reason.
  • Events are incrementally counted if the exact same event is encountered multiple times.

func (*EventCorrelator) EventCorrelate added in v1.2.0

func (c *EventCorrelator) EventCorrelate(newEvent *api.Event) (*EventCorrelateResult, error)

EventCorrelate filters, aggregates, counts, and de-duplicates all incoming events

func (*EventCorrelator) UpdateState added in v1.2.0

func (c *EventCorrelator) UpdateState(event *api.Event)

UpdateState based on the latest observed state from server

type EventFilterFunc added in v1.2.0

type EventFilterFunc func(event *api.Event) bool

EventFilterFunc is a function that returns true if the event should be skipped

type EventRecorder

type EventRecorder interface {
	// Event constructs an event from the given information and puts it in the queue for sending.
	// 'object' is the object this event is about. Event will make a reference-- or you may also
	// pass a reference to the object directly.
	// 'type' of this event, and can be one of Normal, Warning. New types could be added in future
	// 'reason' is the reason this event is generated. 'reason' should be short and unique; it
	// should be in UpperCamelCase format (starting with a capital letter). "reason" will be used
	// to automate handling of events, so imagine people writing switch statements to handle them.
	// You want to make that easy.
	// 'message' is intended to be human readable.
	//
	// The resulting event will be created in the same namespace as the reference object.
	Event(object runtime.Object, eventtype, reason, message string)

	// Eventf is just like Event, but with Sprintf for the message field.
	Eventf(object runtime.Object, eventtype, reason, messageFmt string, args ...interface{})

	// PastEventf is just like Eventf, but with an option to specify the event's 'timestamp' field.
	PastEventf(object runtime.Object, timestamp unversioned.Time, eventtype, reason, messageFmt string, args ...interface{})
}

EventRecorder knows how to record events on behalf of an EventSource.

type EventSink added in v0.13.0

type EventSink interface {
	Create(event *api.Event) (*api.Event, error)
	Update(event *api.Event) (*api.Event, error)
	Patch(oldEvent *api.Event, data []byte) (*api.Event, error)
}

EventSink knows how to store events (client.Client implements it.) EventSink must respect the namespace that will be embedded in 'event'. It is assumed that EventSink will return the same sorts of errors as pkg/client's REST client.

type FakeRecorder added in v0.13.0

type FakeRecorder struct {
	Events chan string
}

FakeRecorder is used as a fake during tests. It is thread safe. It is usable when created manually and not by NewFakeRecorder, however all events may be thrown away in this case.

func NewFakeRecorder added in v1.3.0

func NewFakeRecorder(bufferSize int) *FakeRecorder

NewFakeRecorder creates new fake event recorder with event channel with buffer of given size.

func (*FakeRecorder) Event added in v0.13.0

func (f *FakeRecorder) Event(object runtime.Object, eventtype, reason, message string)

func (*FakeRecorder) Eventf added in v0.13.0

func (f *FakeRecorder) Eventf(object runtime.Object, eventtype, reason, messageFmt string, args ...interface{})

func (*FakeRecorder) PastEventf added in v0.17.0

func (f *FakeRecorder) PastEventf(object runtime.Object, timestamp unversioned.Time, eventtype, reason, messageFmt string, args ...interface{})

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