chore: move the go code into a subfolder

apps/api/internal/telemetry/metrics/mock.go

@@ -0,0 +1,95 @@
+package metrics
+
+import (
+	"context"
+	"net/http"
+	"sync"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/metric"
+)
+
+// MockMetrics implements the metrics.Metrics interface for testing
+type MockMetrics struct {
+	mu              sync.RWMutex
+	histogramValues map[string][]float64
+	counterValues   map[string]int64
+	histogramLabels map[string][]map[string]attribute.Value
+	counterLabels   map[string][]map[string]attribute.Value
+}
+
+var _ Metrics = new(MockMetrics)
+
+// NewMockMetrics creates a new Metrics instance for testing
+func NewMockMetrics() *MockMetrics {
+	return &MockMetrics{
+		histogramValues: make(map[string][]float64),
+		counterValues:   make(map[string]int64),
+		histogramLabels: make(map[string][]map[string]attribute.Value),
+		counterLabels:   make(map[string][]map[string]attribute.Value),
+	}
+}
+
+func (m *MockMetrics) GetExporter() http.Handler {
+	return nil
+}
+
+func (m *MockMetrics) GetMetricsProvider() metric.MeterProvider {
+	return nil
+}
+
+func (m *MockMetrics) RegisterCounter(name, description string) error {
+	return nil
+}
+
+func (m *MockMetrics) AddCount(ctx context.Context, name string, value int64, labels map[string]attribute.Value) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	m.counterValues[name] += value
+	m.counterLabels[name] = append(m.counterLabels[name], labels)
+	return nil
+}
+
+func (m *MockMetrics) AddHistogramMeasurement(ctx context.Context, name string, value float64, labels map[string]attribute.Value) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	m.histogramValues[name] = append(m.histogramValues[name], value)
+	m.histogramLabels[name] = append(m.histogramLabels[name], labels)
+	return nil
+}
+
+func (m *MockMetrics) RegisterUpDownSumObserver(name, description string, callbackFunc metric.Int64Callback) error {
+	return nil
+}
+
+func (m *MockMetrics) RegisterValueObserver(name, description string, callbackFunc metric.Int64Callback) error {
+	return nil
+}
+
+func (m *MockMetrics) RegisterHistogram(name, description, unit string, buckets []float64) error {
+	return nil
+}
+
+func (m *MockMetrics) GetHistogramValues(name string) []float64 {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return m.histogramValues[name]
+}
+
+func (m *MockMetrics) GetHistogramLabels(name string) []map[string]attribute.Value {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return m.histogramLabels[name]
+}
+
+func (m *MockMetrics) GetCounterValue(name string) int64 {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return m.counterValues[name]
+}
+
+func (m *MockMetrics) GetCounterLabels(name string) []map[string]attribute.Value {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return m.counterLabels[name]
+}