/
metrics_observer.go
51 lines (38 loc) · 1.19 KB
/
metrics_observer.go
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package srvutil
import (
"fmt"
"net/http"
"time"
"github.com/Shopify/goose/logger"
"github.com/Shopify/goose/metrics"
"github.com/Shopify/goose/redact"
"github.com/Shopify/goose/statsd"
)
type RequestObserver interface {
BeforeRequest(*http.Request)
AfterRequest(*http.Request, HTTPRecorder, time.Duration)
}
type DefaultRequestObserver struct{}
func (o *DefaultRequestObserver) BeforeRequest(r *http.Request) {
ctx := r.Context()
log(ctx).
WithField("method", r.Method).
WithField("headers", redact.Headers(r.Header)).
Info("http request")
}
func (o *DefaultRequestObserver) AfterRequest(r *http.Request, recorder HTTPRecorder, requestDuration time.Duration) {
ctx := r.Context()
fields := map[string]interface{}{
"statusCode": recorder.StatusCode(),
"statusClass": fmt.Sprintf("%dxx", recorder.StatusCode()/100), // 2xx, 5xx, etc.
}
ctx = statsd.WithTags(ctx, fields)
ctx = logger.WithFields(ctx, fields)
metrics.HTTPRequest.Duration(ctx, requestDuration)
logger := log(ctx).
WithField("headers", redact.Headers(recorder.Header()))
if body := recorder.ResponseBody(); body != nil {
logger = logger.WithField("responseBody", *body)
}
logger.Info("http response")
}