scalers

package
v2.6.1 Latest Latest
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 Go to latest Published: Feb 10, 2022 License: Apache-2.0 Imports: 103 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	KafkaSASLTypeNone        kafkaSaslType = "none"
	KafkaSASLTypePlaintext   kafkaSaslType = "plaintext"
	KafkaSASLTypeSCRAMSHA256 kafkaSaslType = "scram_sha256"
	KafkaSASLTypeSCRAMSHA512 kafkaSaslType = "scram_sha512"
)

supported SASL types

View Source 
const (
	DefaultBrowserVersion string = "latest"
)

Variables

View Source 
var SHA256 scram.HashGeneratorFcn = sha256.New

SHA256 hash generator function for SCRAM conversation

View Source 
var SHA512 scram.HashGeneratorFcn = sha512.New

SHA512 hash generator function for SCRAM conversation

Functions

func GenerateMetricNameWithIndex added in v2.5.0 

func GenerateMetricNameWithIndex(scalerIndex int, metricName string) string

GenerateMetricNameWithIndex helps adding the index prefix to the metric name

func GetFromAuthOrMeta added in v2.5.0 

func GetFromAuthOrMeta(config *ScalerConfig, field string) (string, error)

GetFromAuthOrMeta helps getting a field from Auth or Meta sections

func GetUnprocessedEventCountWithoutCheckpoint 

func GetUnprocessedEventCountWithoutCheckpoint(partitionInfo *eventhub.HubPartitionRuntimeInformation) int64

GetUnprocessedEventCountWithoutCheckpoint returns the number of messages on the without a checkoutpoint info

func GetValueFromResponse 

func GetValueFromResponse(body []byte, valueLocation string) (*resource.Quantity, error)

GetValueFromResponse uses provided valueLocation to access the numeric value in provided body

func NewCassandraSession added in v2.5.0 

func NewCassandraSession(meta *CassandraMetadata) (*gocql.Session, error)

NewCassandraSession returns a new Cassandra session for the provided CassandraMetadata.

Types

type CassandraMetadata added in v2.5.0 

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

CassandraMetadata defines metadata used by KEDA to query a Cassandra table.

func ParseCassandraMetadata added in v2.5.0 

func ParseCassandraMetadata(config *ScalerConfig) (*CassandraMetadata, error)

ParseCassandraMetadata parses the metadata and returns a CassandraMetadata or an error if the ScalerConfig is invalid.

type CommandResponse 

type CommandResponse struct {
	CommandResponse []Response `json:"commandResponse"`
}

CommandResponse Full structured response from MQ admin REST query

type GoogleApplicationCredentials 

type GoogleApplicationCredentials struct {
	Type                string `json:"type"`
	ProjectID           string `json:"project_id"`
	PrivateKeyID        string `json:"private_key_id"`
	PrivateKey          string `json:"private_key"`
	ClientEmail         string `json:"client_email"`
	ClientID            string `json:"client_id"`
	AuthURI             string `json:"auth_uri"`
	TokenURI            string `json:"token_uri"`
	AuthProviderCertURL string `json:"auth_provider_x509_cert_url"`
	ClientX509CertURL   string `json:"client_x509_cert_url"`
}

GoogleApplicationCredentials is a struct representing the format of a service account credentials file

type IBMMQMetadata 

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

IBMMQMetadata Metadata used by KEDA to query IBM MQ queue depth and scale

type IBMMQScaler 

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

IBMMQScaler assigns struct data pointer to metadata variable

func (*IBMMQScaler) Close 

func (s *IBMMQScaler) Close(context.Context) error

Close closes and returns nil

func (*IBMMQScaler) GetMetricSpecForScaling 

func (s *IBMMQScaler) GetMetricSpecForScaling(context.Context) []v2beta2.MetricSpec

GetMetricSpecForScaling returns the MetricSpec for the Horizontal Pod Autoscaler

func (*IBMMQScaler) GetMetrics 

func (s *IBMMQScaler) GetMetrics(ctx context.Context, metricName string, metricSelector labels.Selector) ([]external_metrics.ExternalMetricValue, error)

GetMetrics returns value for a supported metric and an error if there is a problem getting the metric

func (*IBMMQScaler) IsActive 

func (s *IBMMQScaler) IsActive(ctx context.Context) (bool, error)

IsActive returns true if there are messages to be processed/if we need to scale from zero

type Parameters 

type Parameters struct {
	Curdepth int `json:"curdepth"`
}

Parameters Contains the current depth of the IBM MQ Queue

type PredictKubeScaler added in v2.6.0 

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

func NewPredictKubeScaler added in v2.6.0 

func NewPredictKubeScaler(ctx context.Context, config *ScalerConfig) (*PredictKubeScaler, error)

NewPredictKubeScaler creates a new PredictKube scaler

func (*PredictKubeScaler) Close added in v2.6.0 

func (s *PredictKubeScaler) Close(_ context.Context) error

func (*PredictKubeScaler) GetMetricSpecForScaling added in v2.6.0 

func (s *PredictKubeScaler) GetMetricSpecForScaling(context.Context) []v2beta2.MetricSpec

func (*PredictKubeScaler) GetMetrics added in v2.6.0 

func (s *PredictKubeScaler) GetMetrics(ctx context.Context, metricName string, _ labels.Selector) ([]external_metrics.ExternalMetricValue, error)

func (*PredictKubeScaler) IsActive added in v2.6.0 

func (s *PredictKubeScaler) IsActive(ctx context.Context) (bool, error)

IsActive returns true if we are able to get metrics from PredictKube

type PushScaler 

type PushScaler interface {
	Scaler

	// Run is the only writer to the active channel and must close it once done.
	Run(ctx context.Context, active chan<- bool)
}

PushScaler interface

func NewExternalPushScaler 

func NewExternalPushScaler(config *ScalerConfig) (PushScaler, error)

NewExternalPushScaler creates a new externalPushScaler push scaler

type Response 

type Response struct {
	Parameters Parameters `json:"parameters"`
}

Response The body of the response returned from the MQ admin query

type Scaler 

type Scaler interface {

	// The scaler returns the metric values for a metric Name and criteria matching the selector
	GetMetrics(ctx context.Context, metricName string, metricSelector labels.Selector) ([]external_metrics.ExternalMetricValue, error)

	// Returns the metrics based on which this scaler determines that the ScaleTarget scales. This is used to construct the HPA spec that is created for
	// this scaled object. The labels used should match the selectors used in GetMetrics
	GetMetricSpecForScaling(ctx context.Context) []v2beta2.MetricSpec

	IsActive(ctx context.Context) (bool, error)

	// Close any resources that need disposing when scaler is no longer used or destroyed
	Close(ctx context.Context) error
}

Scaler interface

func NewActiveMQScaler added in v2.6.0 

func NewActiveMQScaler(config *ScalerConfig) (Scaler, error)

NewActiveMQScaler creates a new activeMQ Scaler

func NewArtemisQueueScaler 

func NewArtemisQueueScaler(config *ScalerConfig) (Scaler, error)

NewArtemisQueueScaler creates a new artemis queue Scaler

func NewAwsCloudwatchScaler 

func NewAwsCloudwatchScaler(config *ScalerConfig) (Scaler, error)

NewAwsCloudwatchScaler creates a new awsCloudwatchScaler

func NewAwsKinesisStreamScaler 

func NewAwsKinesisStreamScaler(config *ScalerConfig) (Scaler, error)

NewAwsKinesisStreamScaler creates a new awsKinesisStreamScaler

func NewAwsSqsQueueScaler 

func NewAwsSqsQueueScaler(config *ScalerConfig) (Scaler, error)

NewAwsSqsQueueScaler creates a new awsSqsQueueScaler

func NewAzureAppInsightsScaler added in v2.6.0 

func NewAzureAppInsightsScaler(config *ScalerConfig) (Scaler, error)

NewAzureAppInsightsScaler creates a new AzureAppInsightsScaler

func NewAzureBlobScaler 

func NewAzureBlobScaler(config *ScalerConfig) (Scaler, error)

NewAzureBlobScaler creates a new azureBlobScaler

func NewAzureEventHubScaler 

func NewAzureEventHubScaler(config *ScalerConfig) (Scaler, error)

NewAzureEventHubScaler creates a new scaler for eventHub

func NewAzureLogAnalyticsScaler 

func NewAzureLogAnalyticsScaler(config *ScalerConfig) (Scaler, error)

NewAzureLogAnalyticsScaler creates a new Azure Log Analytics Scaler

func NewAzureMonitorScaler 

func NewAzureMonitorScaler(config *ScalerConfig) (Scaler, error)

NewAzureMonitorScaler creates a new AzureMonitorScaler

func NewAzurePipelinesScaler added in v2.3.0 

func NewAzurePipelinesScaler(ctx context.Context, config *ScalerConfig) (Scaler, error)

NewAzurePipelinesScaler creates a new AzurePipelinesScaler

func NewAzureQueueScaler 

func NewAzureQueueScaler(config *ScalerConfig) (Scaler, error)

NewAzureQueueScaler creates a new scaler for queue

func NewAzureServiceBusScaler 

func NewAzureServiceBusScaler(ctx context.Context, config *ScalerConfig) (Scaler, error)

NewAzureServiceBusScaler creates a new AzureServiceBusScaler

func NewCPUMemoryScaler 

func NewCPUMemoryScaler(resourceName v1.ResourceName, config *ScalerConfig) (Scaler, error)

NewCPUMemoryScaler creates a new cpuMemoryScaler

func NewCassandraScaler added in v2.5.0 

func NewCassandraScaler(config *ScalerConfig) (Scaler, error)

NewCassandraScaler creates a new Cassandra scaler.

func NewCronScaler 

func NewCronScaler(config *ScalerConfig) (Scaler, error)

NewCronScaler creates a new cronScaler

func NewDatadogScaler added in v2.6.0 

func NewDatadogScaler(ctx context.Context, config *ScalerConfig) (Scaler, error)

NewDatadogScaler creates a new Datadog scaler

func NewElasticsearchScaler added in v2.5.0 

func NewElasticsearchScaler(config *ScalerConfig) (Scaler, error)

NewElasticsearchScaler creates a new elasticsearch scaler

func NewExternalScaler 

func NewExternalScaler(config *ScalerConfig) (Scaler, error)

NewExternalScaler creates a new external scaler - calls the GRPC interface to create a new scaler

func NewGraphiteScaler added in v2.5.0 

func NewGraphiteScaler(config *ScalerConfig) (Scaler, error)

NewGraphiteScaler creates a new graphiteScaler

func NewHuaweiCloudeyeScaler 

func NewHuaweiCloudeyeScaler(config *ScalerConfig) (Scaler, error)

NewHuaweiCloudeyeScaler creates a new huaweiCloudeyeScaler

func NewIBMMQScaler 

func NewIBMMQScaler(config *ScalerConfig) (Scaler, error)

NewIBMMQScaler creates a new IBM MQ scaler

func NewInfluxDBScaler 

func NewInfluxDBScaler(config *ScalerConfig) (Scaler, error)

NewInfluxDBScaler creates a new influx db scaler

func NewKafkaScaler 

func NewKafkaScaler(config *ScalerConfig) (Scaler, error)

NewKafkaScaler creates a new kafkaScaler

func NewKubernetesWorkloadScaler added in v2.4.0 

func NewKubernetesWorkloadScaler(kubeClient client.Client, config *ScalerConfig) (Scaler, error)

NewKubernetesWorkloadScaler creates a new kubernetesWorkloadScaler

func NewLiiklusScaler 

func NewLiiklusScaler(config *ScalerConfig) (Scaler, error)

NewLiiklusScaler creates a new liiklusScaler scaler

func NewMSSQLScaler added in v2.2.0 

func NewMSSQLScaler(config *ScalerConfig) (Scaler, error)

NewMSSQLScaler creates a new mssql scaler

func NewMetricsAPIScaler 

func NewMetricsAPIScaler(config *ScalerConfig) (Scaler, error)

NewMetricsAPIScaler creates a new HTTP scaler

func NewMongoDBScaler 

func NewMongoDBScaler(ctx context.Context, config *ScalerConfig) (Scaler, error)

NewMongoDBScaler creates a new mongoDB scaler

func NewMySQLScaler 

func NewMySQLScaler(config *ScalerConfig) (Scaler, error)

NewMySQLScaler creates a new MySQL scaler

func NewNewRelicScaler added in v2.6.0 

func NewNewRelicScaler(config *ScalerConfig) (Scaler, error)

func NewOpenstackMetricScaler added in v2.3.0 

func NewOpenstackMetricScaler(ctx context.Context, config *ScalerConfig) (Scaler, error)

NewOpenstackMetricScaler creates new openstack metrics scaler instance

func NewOpenstackSwiftScaler 

func NewOpenstackSwiftScaler(ctx context.Context, config *ScalerConfig) (Scaler, error)

NewOpenstackSwiftScaler creates a new OpenStack Swift scaler

func NewPostgreSQLScaler 

func NewPostgreSQLScaler(config *ScalerConfig) (Scaler, error)

NewPostgreSQLScaler creates a new postgreSQL scaler

func NewPrometheusScaler 

func NewPrometheusScaler(config *ScalerConfig) (Scaler, error)

NewPrometheusScaler creates a new prometheusScaler

func NewPubSubScaler 

func NewPubSubScaler(config *ScalerConfig) (Scaler, error)

NewPubSubScaler creates a new pubsubScaler

func NewRabbitMQScaler 

func NewRabbitMQScaler(config *ScalerConfig) (Scaler, error)

NewRabbitMQScaler creates a new rabbitMQ scaler

func NewRedisScaler 

func NewRedisScaler(ctx context.Context, isClustered, isSentinel bool, config *ScalerConfig) (Scaler, error)

NewRedisScaler creates a new redisScaler

func NewRedisStreamsScaler 

func NewRedisStreamsScaler(ctx context.Context, isClustered, isSentinel bool, config *ScalerConfig) (Scaler, error)

NewRedisStreamsScaler creates a new redisStreamsScaler

func NewSeleniumGridScaler added in v2.4.0 

func NewSeleniumGridScaler(config *ScalerConfig) (Scaler, error)

func NewSolaceScaler added in v2.4.0 

func NewSolaceScaler(config *ScalerConfig) (Scaler, error)

Constructor for SolaceScaler

func NewStanScaler 

func NewStanScaler(config *ScalerConfig) (Scaler, error)

NewStanScaler creates a new stanScaler

type ScalerConfig 

type ScalerConfig struct {
	// Name used for external scalers
	Name string

	// The timeout to be used on all HTTP requests from the controller
	GlobalHTTPTimeout time.Duration

	// Namespace used for external scalers
	Namespace string

	// TriggerMetadata
	TriggerMetadata map[string]string

	// ResolvedEnv
	ResolvedEnv map[string]string

	// AuthParams
	AuthParams map[string]string

	// PodIdentity
	PodIdentity kedav1alpha1.PodIdentityProvider

	// ScalerIndex
	ScalerIndex int
}

ScalerConfig contains config fields common for all scalers

type SolaceMetadata added in v2.4.0 

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

type SolaceMetricValues added in v2.4.0 

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

Struct for Observed Metric Values

type SolaceScaler added in v2.4.0 

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

func (*SolaceScaler) Close added in v2.4.0 

func (s *SolaceScaler) Close(context.Context) error

Do Nothing - Satisfies Interface

func (*SolaceScaler) GetMetricSpecForScaling added in v2.4.0 

func (s *SolaceScaler) GetMetricSpecForScaling(context.Context) []v2beta2.MetricSpec

INTERFACE METHOD DEFINE METRIC FOR SCALING CURRENT SUPPORTED METRICS ARE: - QUEUE MESSAGE COUNT (msgCount) - QUEUE SPOOL USAGE (msgSpoolUsage in MBytes) METRIC IDENTIFIER HAS THE SIGNATURE: - solace-[Queue_Name]-[metric_type] e.g. solace-QUEUE1-msgCount

func (*SolaceScaler) GetMetrics added in v2.4.0 

func (s *SolaceScaler) GetMetrics(ctx context.Context, metricName string, metricSelector labels.Selector) ([]external_metrics.ExternalMetricValue, error)

INTERFACE METHOD Call SEMP API to retrieve metrics returns value for named metric

func (*SolaceScaler) IsActive added in v2.4.0 

func (s *SolaceScaler) IsActive(ctx context.Context) (bool, error)

INTERFACE METHOD Call SEMP API to retrieve metrics IsActive returns true if queue messageCount > 0 || msgSpoolUsage > 0

type StackDriverClient 

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

StackDriverClient is a generic client to fetch metrics from Stackdriver. Can be used for a stackdriver scaler in the future

func NewStackDriverClient 

func NewStackDriverClient(ctx context.Context, credentials string) (*StackDriverClient, error)

NewStackDriverClient creates a new stackdriver client with the credentials that are passed

func NewStackDriverClientPodIdentity added in v2.5.0 

func NewStackDriverClientPodIdentity(ctx context.Context) (*StackDriverClient, error)

NewStackDriverClient creates a new stackdriver client with the credentials underlying

func (StackDriverClient) GetMetrics 

func (s StackDriverClient) GetMetrics(ctx context.Context, filter string, projectID string) (int64, error)

GetMetrics fetches metrics from stackdriver for a specific filter for the last minute

type XDGSCRAMClient 

type XDGSCRAMClient struct {
	*scram.Client
	*scram.ClientConversation
	scram.HashGeneratorFcn
}

XDGSCRAMClient struct to perform SCRAM conversation

func (*XDGSCRAMClient) Begin 

func (x *XDGSCRAMClient) Begin(userName, password, authzID string) (err error)

Begin starts SCRAM conversation

func (*XDGSCRAMClient) Done 

func (x *XDGSCRAMClient) Done() bool

Done completes SCRAM conversation

func (*XDGSCRAMClient) Step 

func (x *XDGSCRAMClient) Step(challenge string) (response string, err error)

Step performs step in SCRAM conversation

Source Files

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Directories

Path Synopsis
mocks
Package mock_liiklus is a generated GoMock package.
 Package mock_liiklus is a generated GoMock package.
utils

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