endpoint

Documentation

Index

• Constants
• Variables
• type Reporter
  • func NewReporter(hostID, hostName string, spyProcs, useConntrack, walkProc bool, ...) *Reporter
  • func (Reporter) Name() string
  • func (r *Reporter) Report() (report.Report, error)
  • func (r *Reporter) Stop()

Constants

const (
	Addr            = "addr" // typically IPv4
	Port            = "port"
	Conntracked     = "conntracked"
	Procspied       = "procspied"
	ReverseDNSNames = "reverse_dns_names"
)

Node metadata keys.

Variables

var ConntrackModulePresent = func() bool {
	f, err := os.Open(modules)
	if err != nil {
		return false
	}
	defer f.Close()

	scanner := bufio.NewScanner(f)
	for scanner.Scan() {
		line := scanner.Text()
		if strings.HasPrefix(line, conntrackModule) {
			return true
		}
	}
	if err := scanner.Err(); err != nil {
		log.Errorf("conntrack error: %v", err)
	}

	log.Errorf("conntrack: failed to find module %s", conntrackModule)
	return false
}

ConntrackModulePresent returns true if the kernel has the conntrack module present. It is made public for mocking.

var SpyDuration = prometheus.NewSummaryVec(
	prometheus.SummaryOpts{
		Namespace: "scope",
		Subsystem: "probe",
		Name:      "spy_duration_seconds",
		Help:      "Time in seconds spent spying on active connections.",
		MaxAge:    10 * time.Second,
	},
	[]string{},
)

SpyDuration is an exported prometheus metric

Types

type Reporter

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

Reporter generates Reports containing the Endpoint topology.

func NewReporter

func NewReporter(hostID, hostName string, spyProcs, useConntrack, walkProc bool, scanner procspy.ConnectionScanner) *Reporter

NewReporter creates a new Reporter that invokes procspy.Connections to generate a report.Report that contains every discovered (spied) connection on the host machine, at the granularity of host and port. That information is stored in the Endpoint topology. It optionally enriches that topology with process (PID) information.

func (Reporter) Name

func (Reporter) Name() string

Name of this reporter, for metrics gathering

func (*Reporter) Report

func (r *Reporter) Report() (report.Report, error)

Report implements Reporter.

func (*Reporter) Stop

func (r *Reporter) Stop()

Stop stop stop