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metricsreporter.go
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metricsreporter.go
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package metrics
import (
"fmt"
"net/http"
"strings"
"sync/atomic"
"time"
"code.cloudfoundry.org/gorouter/route"
"github.com/cloudfoundry/dropsonde/metrics"
)
type MetricsReporter struct {
Sender metrics.MetricSender
Batcher metrics.MetricBatcher
PerRequestMetricsReporting bool
unmuzzled uint64
}
func (m *MetricsReporter) CaptureBackendExhaustedConns() {
m.Batcher.BatchIncrementCounter("backend_exhausted_conns")
}
func (m *MetricsReporter) CaptureBackendTLSHandshakeFailed() {
m.Batcher.BatchIncrementCounter("backend_tls_handshake_failed")
}
func (m *MetricsReporter) CaptureBackendInvalidID() {
m.Batcher.BatchIncrementCounter("backend_invalid_id")
}
func (m *MetricsReporter) CaptureBackendInvalidTLSCert() {
m.Batcher.BatchIncrementCounter("backend_invalid_tls_cert")
}
func (m *MetricsReporter) CaptureBadRequest() {
m.Batcher.BatchIncrementCounter("rejected_requests")
}
func (m *MetricsReporter) CaptureBadGateway() {
m.Batcher.BatchIncrementCounter("bad_gateways")
}
func (m *MetricsReporter) CaptureRoutingRequest(b *route.Endpoint) {
m.Batcher.BatchIncrementCounter("total_requests")
componentName, ok := b.Tags["component"]
if ok && len(componentName) > 0 {
m.Batcher.BatchIncrementCounter(fmt.Sprintf("requests.%s", componentName))
if strings.HasPrefix(componentName, "dea-") {
m.Batcher.BatchIncrementCounter("routed_app_requests")
}
}
}
func (m *MetricsReporter) CaptureRouteServiceResponse(res *http.Response) {
var statusCode int
if res != nil {
statusCode = res.StatusCode
}
m.Batcher.BatchIncrementCounter(fmt.Sprintf("responses.route_services.%s", getResponseCounterName(statusCode)))
m.Batcher.BatchIncrementCounter("responses.route_services")
}
func (m *MetricsReporter) CaptureRoutingResponse(statusCode int) {
m.Batcher.BatchIncrementCounter(fmt.Sprintf("responses.%s", getResponseCounterName(statusCode)))
m.Batcher.BatchIncrementCounter("responses")
}
func (m *MetricsReporter) CaptureRoutingResponseLatency(b *route.Endpoint, _ int, _ time.Time, d time.Duration) {
if m.PerRequestMetricsReporting {
//this function has extra arguments to match varz reporter
latency := float64(d / time.Millisecond)
unit := "ms"
m.Sender.SendValue("latency", latency, unit)
componentName, ok := b.Tags["component"]
if ok && len(componentName) > 0 {
m.Sender.SendValue(fmt.Sprintf("latency.%s", componentName), latency, unit)
}
}
}
func (m *MetricsReporter) CaptureLookupTime(t time.Duration) {
if m.PerRequestMetricsReporting {
unit := "ns"
m.Sender.SendValue("route_lookup_time", float64(t.Nanoseconds()), unit)
}
}
func (m *MetricsReporter) UnmuzzleRouteRegistrationLatency() {
atomic.StoreUint64(&m.unmuzzled, 1)
}
func (m *MetricsReporter) CaptureRouteRegistrationLatency(t time.Duration) {
if atomic.LoadUint64(&m.unmuzzled) == 1 {
m.Sender.SendValue("route_registration_latency", float64(t/time.Millisecond), "ms")
}
}
func (m *MetricsReporter) CaptureRouteStats(totalRoutes int, msSinceLastUpdate int64) {
m.Sender.SendValue("total_routes", float64(totalRoutes), "")
m.Sender.SendValue("ms_since_last_registry_update", float64(msSinceLastUpdate), "ms")
}
func (m *MetricsReporter) CaptureRoutesPruned(routesPruned uint64) {
m.Batcher.BatchAddCounter("routes_pruned", routesPruned)
}
func (m *MetricsReporter) CaptureRegistryMessage(msg ComponentTagged) {
var componentName string
if msg.Component() == "" {
componentName = "registry_message"
} else {
componentName = "registry_message." + msg.Component()
}
m.Batcher.BatchIncrementCounter(componentName)
}
func (m *MetricsReporter) CaptureUnregistryMessage(msg ComponentTagged) {
var componentName string
if msg.Component() == "" {
componentName = "unregistry_message"
} else {
componentName = "unregistry_message." + msg.Component()
}
m.Sender.IncrementCounter(componentName)
}
func (m *MetricsReporter) CaptureWebSocketUpdate() {
m.Batcher.BatchIncrementCounter("websocket_upgrades")
}
func (m *MetricsReporter) CaptureWebSocketFailure() {
m.Batcher.BatchIncrementCounter("websocket_failures")
}
func getResponseCounterName(statusCode int) string {
statusCode = statusCode / 100
if statusCode >= 2 && statusCode <= 5 {
return fmt.Sprintf("%dxx", statusCode)
}
return "xxx"
}