feat: authsession service

authsession/internal/api/publichttp/observability_test.go

@@ -0,0 +1,114 @@
+package publichttp
+
+import (
+	"bytes"
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"galaxy/authsession/internal/service/confirmemailcode"
+	"galaxy/authsession/internal/service/sendemailcode"
+	authtelemetry "galaxy/authsession/internal/telemetry"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/otel/attribute"
+	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
+	"go.opentelemetry.io/otel/sdk/metric/metricdata"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	"go.opentelemetry.io/otel/sdk/trace/tracetest"
+)
+
+func TestPublicHandlerEmitsTraceFieldsAndMetrics(t *testing.T) {
+	t.Parallel()
+
+	logger, buffer := newObservedLogger()
+	telemetryRuntime, reader, recorder := newObservedPublicTelemetryRuntime(t)
+	handler := mustNewHandler(t, DefaultConfig(), Dependencies{
+		Logger:    logger,
+		Telemetry: telemetryRuntime,
+		SendEmailCode: sendEmailCodeFunc(func(context.Context, sendemailcode.Input) (sendemailcode.Result, error) {
+			return sendemailcode.Result{ChallengeID: "challenge-123"}, nil
+		}),
+		ConfirmEmailCode: confirmEmailCodeFunc(func(context.Context, confirmemailcode.Input) (confirmemailcode.Result, error) {
+			return confirmemailcode.Result{}, nil
+		}),
+	})
+
+	recorderHTTP := httptest.NewRecorder()
+	request := httptest.NewRequest(
+		http.MethodPost,
+		"/api/v1/public/auth/send-email-code",
+		bytes.NewBufferString(`{"email":"pilot@example.com"}`),
+	)
+	request.Header.Set("Content-Type", "application/json")
+
+	handler.ServeHTTP(recorderHTTP, request)
+
+	require.Equal(t, http.StatusOK, recorderHTTP.Code)
+	require.NotEmpty(t, recorder.Ended())
+	assert.Contains(t, buffer.String(), "otel_trace_id")
+	assert.Contains(t, buffer.String(), "otel_span_id")
+
+	assertMetricCount(t, reader, "authsession.public_http.requests", map[string]string{
+		"route":        "/api/v1/public/auth/send-email-code",
+		"method":       http.MethodPost,
+		"edge_outcome": "success",
+	}, 1)
+}
+
+func newObservedPublicTelemetryRuntime(t *testing.T) (*authtelemetry.Runtime, *sdkmetric.ManualReader, *tracetest.SpanRecorder) {
+	t.Helper()
+
+	reader := sdkmetric.NewManualReader()
+	meterProvider := sdkmetric.NewMeterProvider(sdkmetric.WithReader(reader))
+	recorder := tracetest.NewSpanRecorder()
+	tracerProvider := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(recorder))
+
+	runtime, err := authtelemetry.NewWithProviders(meterProvider, tracerProvider)
+	require.NoError(t, err)
+
+	return runtime, reader, recorder
+}
+
+func assertMetricCount(t *testing.T, reader *sdkmetric.ManualReader, metricName string, wantAttrs map[string]string, wantValue int64) {
+	t.Helper()
+
+	var resourceMetrics metricdata.ResourceMetrics
+	require.NoError(t, reader.Collect(context.Background(), &resourceMetrics))
+
+	for _, scopeMetrics := range resourceMetrics.ScopeMetrics {
+		for _, metric := range scopeMetrics.Metrics {
+			if metric.Name != metricName {
+				continue
+			}
+
+			sum, ok := metric.Data.(metricdata.Sum[int64])
+			require.True(t, ok)
+
+			for _, point := range sum.DataPoints {
+				if hasMetricAttributes(point.Attributes.ToSlice(), wantAttrs) {
+					assert.Equal(t, wantValue, point.Value)
+					return
+				}
+			}
+		}
+	}
+
+	require.Failf(t, "test failed", "metric %q with attrs %v not found", metricName, wantAttrs)
+}
+
+func hasMetricAttributes(values []attribute.KeyValue, want map[string]string) bool {
+	if len(values) != len(want) {
+		return false
+	}
+
+	for _, value := range values {
+		if want[string(value.Key)] != value.Value.AsString() {
+			return false
+		}
+	}
+
+	return true
+}