transport

Documentation

Index

• type Metric
• type MockReporter
  • func NewMockReporter(expectedOnMetricsProcessedCalls int) *MockReporter
  • func (m *MockReporter) OnDataReceived(ctx context.Context) context.Context
  • func (m *MockReporter) OnDebugf(_ string, _ ...interface{})
  • func (m *MockReporter) OnMetricsProcessed(_ context.Context, _ int, _ error)
  • func (m *MockReporter) OnTranslationError(_ context.Context, _ error)
  • func (m *MockReporter) WaitAllOnMetricsProcessedCalls()
• type Reporter
• type Server
  • func NewUDPServer(addr string) (Server, error)

Types

type Metric

type Metric struct {
	Raw  string
	Addr net.Addr
}

type MockReporter

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

MockReporter provides a Reporter that provides some useful functionalities for tests (eg.: wait for certain number of messages).

func NewMockReporter

func NewMockReporter(expectedOnMetricsProcessedCalls int) *MockReporter

NewMockReporter returns a new instance of a MockReporter.

func (*MockReporter) OnDataReceived

func (m *MockReporter) OnDataReceived(ctx context.Context) context.Context

func (*MockReporter) OnDebugf

func (m *MockReporter) OnDebugf(_ string, _ ...interface{})

func (*MockReporter) OnMetricsProcessed

func (m *MockReporter) OnMetricsProcessed(_ context.Context, _ int, _ error)

func (*MockReporter) OnTranslationError

func (m *MockReporter) OnTranslationError(_ context.Context, _ error)

func (*MockReporter) WaitAllOnMetricsProcessedCalls

func (m *MockReporter) WaitAllOnMetricsProcessedCalls()

WaitAllOnMetricsProcessedCalls blocks until the number of expected calls specified at creation of the reporter is completed.

type Reporter

type Reporter interface {
	// OnDataReceived is called when a message or request is received from
	// a client. The returned context should be used in other calls to the same
	// reporter instance. The caller code should include a call to end the
	// returned span.
	OnDataReceived(ctx context.Context) context.Context

	// OnTranslationError is used to report a translation error from original
	// format to the internal format of the Collector. The context
	// passed to it should be the ones returned by OnDataReceived.
	OnTranslationError(ctx context.Context, err error)

	// OnMetricsProcessed is called when the received data is passed to next
	// consumer on the pipeline. The context passed to it should be the
	// one returned by OnDataReceived. The error should be error returned by
	// the next consumer - the reporter is expected to handle nil error too.
	OnMetricsProcessed(ctx context.Context, numReceivedMessages int, err error)

	// OnDebugf allows less structured reporting for debugging scenarios.
	OnDebugf(
		template string,
		args ...interface{})
}

Reporter is used to report (via zPages, logs, metrics, etc) the events happening when the Server is receiving and processing data.

type Server

type Server interface {
	// ListenAndServe is a blocking call that starts to listen for client messages
	// on the specific transport, and prepares the message to be processed by
	// the Parser and passed to the next consumer.
	ListenAndServe(
		p protocol.Parser,
		mc consumer.Metrics,
		r Reporter,
		transferChan chan<- Metric,
	) error

	// Close stops any running ListenAndServe, however, it waits for any
	// data already received to be parsed and sent to the next consumer.
	Close() error
}

Server abstracts the type of transport being used and offer an interface to handle serving clients over that transport.

func NewUDPServer

func NewUDPServer(addr string) (Server, error)

NewUDPServer creates a transport.Server using UDP as its transport.