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Documentation

Index

• type ContainerMetricFetcher
• type DopplerPool
• type EnvelopeConverter
  • func NewConverter() EnvelopeConverter
• type Finder
• type GRPCConnector
  • func NewGRPCConnector(bufferSize int, pool DopplerPool, f Finder, m MetricClient) *GRPCConnector
  • func (c *GRPCConnector) Subscribe(ctx context.Context, req *loggregator_v2.EgressBatchRequest) (recv func() (*loggregator_v2.Envelope, error), err error)
• type MetricClient
• type Pool
  • func NewPool(size int, opts ...grpc.DialOption) *Pool
  • func (p *Pool) Close(dopplerAddr string)
  • func (p *Pool) RegisterDoppler(addr string)
  • func (p *Pool) Subscribe(dopplerAddr string, ctx context.Context, ...) (loggregator_v2.Egress_BatchedReceiverClient, error)
• type Querier
  • func NewQuerier(c EnvelopeConverter, f ContainerMetricFetcher) *Querier
  • func (q *Querier) ContainerMetrics(ctx context.Context, sourceID string, usePreferredTags bool) ([]*v2.Envelope, error)

Types

type ContainerMetricFetcher

type ContainerMetricFetcher interface {
	ContainerMetrics(ctx context.Context, appID string) [][]byte
}

type DopplerPool

type DopplerPool interface {
	RegisterDoppler(addr string)
	Subscribe(dopplerAddr string, ctx context.Context, req *loggregator_v2.EgressBatchRequest) (loggregator_v2.Egress_BatchedReceiverClient, error)

	Close(dopplerAddr string)
}

DopplerPool creates a pool of doppler gRPC connections

type EnvelopeConverter

type EnvelopeConverter interface {
	Convert(data []byte, usePreferredTags bool) (*v2.Envelope, error)
}

func NewConverter

func NewConverter() EnvelopeConverter

type Finder

type Finder interface {
	Next() plumbing.Event
}

Finder yields events that tell us what dopplers are available.

type GRPCConnector

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

GRPCConnector establishes GRPC connections to dopplers and allows calls to Firehose, Stream, etc to be reduced down to a single Receiver.

func NewGRPCConnector

func NewGRPCConnector(
	bufferSize int,
	pool DopplerPool,
	f Finder,
	m MetricClient,
) *GRPCConnector

NewGRPCConnector creates a new GRPCConnector.

func (*GRPCConnector) Subscribe

func (c *GRPCConnector) Subscribe(ctx context.Context, req *loggregator_v2.EgressBatchRequest) (recv func() (*loggregator_v2.Envelope, error), err error)

Subscribe returns a Receiver that yields all corresponding messages from Doppler

type MetricClient

type MetricClient interface {
	NewCounter(name string, opts ...metricemitter.MetricOption) *metricemitter.Counter
}

MetricClient creates new CounterMetrics to be emitted periodically.

type Pool

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

func NewPool

func NewPool(size int, opts ...grpc.DialOption) *Pool

func (*Pool) Close

func (p *Pool) Close(dopplerAddr string)

func (*Pool) RegisterDoppler

func (p *Pool) RegisterDoppler(addr string)

func (*Pool) Subscribe

func (p *Pool) Subscribe(
	dopplerAddr string,
	ctx context.Context,
	req *loggregator_v2.EgressBatchRequest,
) (loggregator_v2.Egress_BatchedReceiverClient, error)

type Querier

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

func NewQuerier

func NewQuerier(c EnvelopeConverter, f ContainerMetricFetcher) *Querier

func (*Querier) ContainerMetrics

func (q *Querier) ContainerMetrics(ctx context.Context, sourceID string, usePreferredTags bool) ([]*v2.Envelope, error)