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path: root/modules/caddyhttp/metrics_test.go
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Diffstat (limited to 'modules/caddyhttp/metrics_test.go')
-rw-r--r--modules/caddyhttp/metrics_test.go196
1 files changed, 189 insertions, 7 deletions
diff --git a/modules/caddyhttp/metrics_test.go b/modules/caddyhttp/metrics_test.go
index 8f88549d5..4a0519b87 100644
--- a/modules/caddyhttp/metrics_test.go
+++ b/modules/caddyhttp/metrics_test.go
@@ -6,9 +6,10 @@ import (
"net/http"
"net/http/httptest"
"strings"
+ "sync"
"testing"
- "github.com/prometheus/client_golang/prometheus"
+ "github.com/caddyserver/caddy/v2"
"github.com/prometheus/client_golang/prometheus/testutil"
)
@@ -27,10 +28,15 @@ func TestServerNameFromContext(t *testing.T) {
}
func TestMetricsInstrumentedHandler(t *testing.T) {
+ ctx, _ := caddy.NewContext(caddy.Context{Context: context.Background()})
+ metrics := &Metrics{
+ init: sync.Once{},
+ httpMetrics: &httpMetrics{},
+ }
handlerErr := errors.New("oh noes")
response := []byte("hello world!")
h := HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
- if actual := testutil.ToFloat64(httpMetrics.requestInFlight); actual != 1.0 {
+ if actual := testutil.ToFloat64(metrics.httpMetrics.requestInFlight); actual != 1.0 {
t.Errorf("Not same: expected %#v, but got %#v", 1.0, actual)
}
if handlerErr == nil {
@@ -43,7 +49,7 @@ func TestMetricsInstrumentedHandler(t *testing.T) {
return h.ServeHTTP(w, r)
})
- ih := newMetricsInstrumentedHandler("bar", mh)
+ ih := newMetricsInstrumentedHandler(ctx, "bar", mh, metrics)
r := httptest.NewRequest("GET", "/", nil)
w := httptest.NewRecorder()
@@ -51,7 +57,7 @@ func TestMetricsInstrumentedHandler(t *testing.T) {
if actual := ih.ServeHTTP(w, r, h); actual != handlerErr {
t.Errorf("Not same: expected %#v, but got %#v", handlerErr, actual)
}
- if actual := testutil.ToFloat64(httpMetrics.requestInFlight); actual != 0.0 {
+ if actual := testutil.ToFloat64(metrics.httpMetrics.requestInFlight); actual != 0.0 {
t.Errorf("Not same: expected %#v, but got %#v", 0.0, actual)
}
@@ -64,7 +70,7 @@ func TestMetricsInstrumentedHandler(t *testing.T) {
mh = middlewareHandlerFunc(func(w http.ResponseWriter, r *http.Request, h Handler) error {
return nil
})
- ih = newMetricsInstrumentedHandler("empty", mh)
+ ih = newMetricsInstrumentedHandler(ctx, "empty", mh, metrics)
r = httptest.NewRequest("GET", "/", nil)
w = httptest.NewRecorder()
@@ -83,7 +89,7 @@ func TestMetricsInstrumentedHandler(t *testing.T) {
return Error(http.StatusTooManyRequests, nil)
})
- ih = newMetricsInstrumentedHandler("foo", mh)
+ ih = newMetricsInstrumentedHandler(ctx, "foo", mh, metrics)
r = httptest.NewRequest("GET", "/", nil)
w = httptest.NewRecorder()
@@ -183,7 +189,183 @@ func TestMetricsInstrumentedHandler(t *testing.T) {
caddy_http_request_errors_total{handler="bar",server="UNKNOWN"} 1
caddy_http_request_errors_total{handler="foo",server="UNKNOWN"} 1
`
- if err := testutil.GatherAndCompare(prometheus.DefaultGatherer, strings.NewReader(expected),
+ if err := testutil.GatherAndCompare(ctx.GetMetricsRegistry(), strings.NewReader(expected),
+ "caddy_http_request_size_bytes",
+ "caddy_http_response_size_bytes",
+ // caddy_http_request_duration_seconds_sum will vary based on how long the test took to run,
+ // so we check just the _bucket and _count metrics
+ "caddy_http_request_duration_seconds_bucket",
+ "caddy_http_request_duration_seconds_count",
+ "caddy_http_request_errors_total",
+ ); err != nil {
+ t.Errorf("received unexpected error: %s", err)
+ }
+}
+
+func TestMetricsInstrumentedHandlerPerHost(t *testing.T) {
+ ctx, _ := caddy.NewContext(caddy.Context{Context: context.Background()})
+ metrics := &Metrics{
+ PerHost: true,
+ init: sync.Once{},
+ httpMetrics: &httpMetrics{},
+ }
+ handlerErr := errors.New("oh noes")
+ response := []byte("hello world!")
+ h := HandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
+ if actual := testutil.ToFloat64(metrics.httpMetrics.requestInFlight); actual != 1.0 {
+ t.Errorf("Not same: expected %#v, but got %#v", 1.0, actual)
+ }
+ if handlerErr == nil {
+ w.Write(response)
+ }
+ return handlerErr
+ })
+
+ mh := middlewareHandlerFunc(func(w http.ResponseWriter, r *http.Request, h Handler) error {
+ return h.ServeHTTP(w, r)
+ })
+
+ ih := newMetricsInstrumentedHandler(ctx, "bar", mh, metrics)
+
+ r := httptest.NewRequest("GET", "/", nil)
+ w := httptest.NewRecorder()
+
+ if actual := ih.ServeHTTP(w, r, h); actual != handlerErr {
+ t.Errorf("Not same: expected %#v, but got %#v", handlerErr, actual)
+ }
+ if actual := testutil.ToFloat64(metrics.httpMetrics.requestInFlight); actual != 0.0 {
+ t.Errorf("Not same: expected %#v, but got %#v", 0.0, actual)
+ }
+
+ handlerErr = nil
+ if err := ih.ServeHTTP(w, r, h); err != nil {
+ t.Errorf("Received unexpected error: %v", err)
+ }
+
+ // an empty handler - no errors, no header written
+ mh = middlewareHandlerFunc(func(w http.ResponseWriter, r *http.Request, h Handler) error {
+ return nil
+ })
+ ih = newMetricsInstrumentedHandler(ctx, "empty", mh, metrics)
+ r = httptest.NewRequest("GET", "/", nil)
+ w = httptest.NewRecorder()
+
+ if err := ih.ServeHTTP(w, r, h); err != nil {
+ t.Errorf("Received unexpected error: %v", err)
+ }
+ if actual := w.Result().StatusCode; actual != 200 {
+ t.Errorf("Not same: expected status code %#v, but got %#v", 200, actual)
+ }
+ if actual := w.Result().Header; len(actual) != 0 {
+ t.Errorf("Not empty: expected headers to be empty, but got %#v", actual)
+ }
+
+ // handler returning an error with an HTTP status
+ mh = middlewareHandlerFunc(func(w http.ResponseWriter, r *http.Request, h Handler) error {
+ return Error(http.StatusTooManyRequests, nil)
+ })
+
+ ih = newMetricsInstrumentedHandler(ctx, "foo", mh, metrics)
+
+ r = httptest.NewRequest("GET", "/", nil)
+ w = httptest.NewRecorder()
+
+ if err := ih.ServeHTTP(w, r, nil); err == nil {
+ t.Errorf("expected error to be propagated")
+ }
+
+ expected := `
+ # HELP caddy_http_request_duration_seconds Histogram of round-trip request durations.
+ # TYPE caddy_http_request_duration_seconds histogram
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.005"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.01"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.025"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.05"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.1"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.25"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="0.5"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="1"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="2.5"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="5"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="10"} 1
+ caddy_http_request_duration_seconds_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_request_duration_seconds_count{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN"} 1
+ # HELP caddy_http_request_size_bytes Total size of the request. Includes body
+ # TYPE caddy_http_request_size_bytes histogram
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="256"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="1024"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="4096"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="16384"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="65536"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="262144"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="1.048576e+06"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="4.194304e+06"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_request_size_bytes_sum{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN"} 23
+ caddy_http_request_size_bytes_count{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="256"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="1024"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="4096"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="16384"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="65536"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="262144"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="1.048576e+06"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="4.194304e+06"} 1
+ caddy_http_request_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_request_size_bytes_sum{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN"} 23
+ caddy_http_request_size_bytes_count{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="256"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="1024"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="4096"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="16384"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="65536"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="262144"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="1.048576e+06"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="4.194304e+06"} 1
+ caddy_http_request_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_request_size_bytes_sum{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN"} 23
+ caddy_http_request_size_bytes_count{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN"} 1
+ # HELP caddy_http_response_size_bytes Size of the returned response.
+ # TYPE caddy_http_response_size_bytes histogram
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="256"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="1024"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="4096"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="16384"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="65536"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="262144"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="1.048576e+06"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="4.194304e+06"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_response_size_bytes_sum{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN"} 12
+ caddy_http_response_size_bytes_count{code="200",handler="bar",host="example.com",method="GET",server="UNKNOWN"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="256"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="1024"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="4096"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="16384"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="65536"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="262144"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="1.048576e+06"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="4.194304e+06"} 1
+ caddy_http_response_size_bytes_bucket{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_response_size_bytes_sum{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN"} 0
+ caddy_http_response_size_bytes_count{code="200",handler="empty",host="example.com",method="GET",server="UNKNOWN"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="256"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="1024"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="4096"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="16384"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="65536"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="262144"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="1.048576e+06"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="4.194304e+06"} 1
+ caddy_http_response_size_bytes_bucket{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN",le="+Inf"} 1
+ caddy_http_response_size_bytes_sum{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN"} 0
+ caddy_http_response_size_bytes_count{code="429",handler="foo",host="example.com",method="GET",server="UNKNOWN"} 1
+ # HELP caddy_http_request_errors_total Number of requests resulting in middleware errors.
+ # TYPE caddy_http_request_errors_total counter
+ caddy_http_request_errors_total{handler="bar",host="example.com",server="UNKNOWN"} 1
+ caddy_http_request_errors_total{handler="foo",host="example.com",server="UNKNOWN"} 1
+ `
+ if err := testutil.GatherAndCompare(ctx.GetMetricsRegistry(), strings.NewReader(expected),
"caddy_http_request_size_bytes",
"caddy_http_response_size_bytes",
// caddy_http_request_duration_seconds_sum will vary based on how long the test took to run,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 14:57:23 +0000