update as per the comment in pr
This commit is contained in:
Manendra Pal Singh
@@ -1,21 +0,0 @@
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package main
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import (
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"context"
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"net/http"
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"github.com/beckn-one/beckn-onix/pkg/plugin/implementation/otelmetrics"
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)
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type middlewareProvider struct{}
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func (middlewareProvider) New(ctx context.Context, cfg map[string]string) (func(http.Handler) http.Handler, error) {
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mw, err := otelmetrics.New(ctx, cfg)
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if err != nil {
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return nil, err
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}
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return mw.Handler, nil
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}
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// Provider is exported for plugin loader.
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var Provider = middlewareProvider{}
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@@ -1,97 +0,0 @@
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package otelmetrics
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import (
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"context"
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"fmt"
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"sync"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/metric"
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)
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// HTTPMetrics exposes HTTP-related metric instruments.
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type HTTPMetrics struct {
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HTTPRequestsTotal metric.Int64Counter
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HTTPRequestDuration metric.Float64Histogram
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HTTPRequestsInFlight metric.Int64UpDownCounter
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HTTPRequestSize metric.Int64Histogram
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HTTPResponseSize metric.Int64Histogram
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BecknMessagesTotal metric.Int64Counter
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}
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var (
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httpMetricsInstance *HTTPMetrics
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httpMetricsOnce sync.Once
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httpMetricsErr error
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)
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// GetHTTPMetrics lazily initializes HTTP metric instruments and returns a cached reference.
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func GetHTTPMetrics(ctx context.Context) (*HTTPMetrics, error) {
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httpMetricsOnce.Do(func() {
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httpMetricsInstance, httpMetricsErr = newHTTPMetrics()
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})
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return httpMetricsInstance, httpMetricsErr
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}
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func newHTTPMetrics() (*HTTPMetrics, error) {
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meter := otel.GetMeterProvider().Meter(
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"github.com/beckn-one/beckn-onix/otelmetrics",
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metric.WithInstrumentationVersion("1.0.0"),
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)
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m := &HTTPMetrics{}
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var err error
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if m.HTTPRequestsTotal, err = meter.Int64Counter(
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"http_server_requests_total",
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metric.WithDescription("Total number of HTTP requests processed"),
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metric.WithUnit("{request}"),
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); err != nil {
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return nil, fmt.Errorf("http_server_requests_total: %w", err)
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}
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if m.HTTPRequestDuration, err = meter.Float64Histogram(
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"http_server_request_duration_seconds",
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metric.WithDescription("HTTP request duration in seconds"),
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metric.WithUnit("s"),
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metric.WithExplicitBucketBoundaries(0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10),
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); err != nil {
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return nil, fmt.Errorf("http_server_request_duration_seconds: %w", err)
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}
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if m.HTTPRequestsInFlight, err = meter.Int64UpDownCounter(
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"http_server_requests_in_flight",
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metric.WithDescription("Number of HTTP requests currently being processed"),
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metric.WithUnit("{request}"),
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); err != nil {
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return nil, fmt.Errorf("http_server_requests_in_flight: %w", err)
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}
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if m.HTTPRequestSize, err = meter.Int64Histogram(
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"http_server_request_size_bytes",
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metric.WithDescription("Size of HTTP request payloads"),
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metric.WithUnit("By"),
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metric.WithExplicitBucketBoundaries(100, 1000, 10000, 100000, 1000000),
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); err != nil {
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return nil, fmt.Errorf("http_server_request_size_bytes: %w", err)
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}
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if m.HTTPResponseSize, err = meter.Int64Histogram(
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"http_server_response_size_bytes",
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metric.WithDescription("Size of HTTP responses"),
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metric.WithUnit("By"),
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metric.WithExplicitBucketBoundaries(100, 1000, 10000, 100000, 1000000),
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); err != nil {
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return nil, fmt.Errorf("http_server_response_size_bytes: %w", err)
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}
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if m.BecknMessagesTotal, err = meter.Int64Counter(
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"beckn_messages_total",
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metric.WithDescription("Total Beckn protocol messages processed"),
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metric.WithUnit("{message}"),
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); err != nil {
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return nil, fmt.Errorf("beckn_messages_total: %w", err)
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}
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return m, nil
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}
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@@ -1,134 +0,0 @@
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package otelmetrics
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import (
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"context"
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"net/http"
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"strings"
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"time"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/metric"
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"github.com/beckn-one/beckn-onix/pkg/log"
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"github.com/beckn-one/beckn-onix/pkg/telemetry"
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)
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// Middleware instruments inbound HTTP handlers with OpenTelemetry metrics.
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type Middleware struct {
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metrics *HTTPMetrics
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enabled bool
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}
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// New constructs middleware based on plugin configuration.
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func New(ctx context.Context, cfg map[string]string) (*Middleware, error) {
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enabled := cfg["enabled"] != "false"
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metrics, err := GetHTTPMetrics(ctx)
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if err != nil {
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log.Warnf(ctx, "OpenTelemetry metrics unavailable: %v", err)
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}
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return &Middleware{
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metrics: metrics,
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enabled: enabled,
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}, nil
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}
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// Handler returns an http.Handler middleware compatible with plugin expectations.
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func (m *Middleware) Handler(next http.Handler) http.Handler {
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if !m.enabled || m.metrics == nil {
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return next
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}
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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action := extractAction(r.URL.Path)
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module := r.Header.Get("X-Module-Name")
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role := r.Header.Get("X-Role")
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attrs := []attribute.KeyValue{
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telemetry.AttrModule.String(module),
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telemetry.AttrRole.String(role),
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telemetry.AttrAction.String(action),
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telemetry.AttrHTTPMethod.String(r.Method),
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}
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m.metrics.HTTPRequestsInFlight.Add(ctx, 1, metric.WithAttributes(attrs...))
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defer m.metrics.HTTPRequestsInFlight.Add(ctx, -1, metric.WithAttributes(attrs...))
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if r.ContentLength > 0 {
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m.metrics.HTTPRequestSize.Record(ctx, r.ContentLength, metric.WithAttributes(attrs...))
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}
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rw := &responseWriter{ResponseWriter: w, statusCode: http.StatusOK}
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start := time.Now()
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next.ServeHTTP(rw, r)
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duration := time.Since(start).Seconds()
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status := "success"
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if rw.statusCode >= 400 {
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status = "error"
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}
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statusAttrs := append(attrs,
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telemetry.AttrHTTPStatus.Int(rw.statusCode),
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telemetry.AttrStatus.String(status),
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)
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m.metrics.HTTPRequestsTotal.Add(ctx, 1, metric.WithAttributes(statusAttrs...))
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m.metrics.HTTPRequestDuration.Record(ctx, duration, metric.WithAttributes(statusAttrs...))
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if rw.bytesWritten > 0 {
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m.metrics.HTTPResponseSize.Record(ctx, int64(rw.bytesWritten), metric.WithAttributes(statusAttrs...))
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}
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if isBecknAction(action) {
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m.metrics.BecknMessagesTotal.Add(ctx, 1,
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metric.WithAttributes(
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telemetry.AttrAction.String(action),
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telemetry.AttrRole.String(role),
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telemetry.AttrStatus.String(status),
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))
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}
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})
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}
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type responseWriter struct {
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http.ResponseWriter
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statusCode int
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bytesWritten int
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}
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func (rw *responseWriter) WriteHeader(code int) {
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rw.statusCode = code
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rw.ResponseWriter.WriteHeader(code)
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}
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func (rw *responseWriter) Write(b []byte) (int, error) {
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n, err := rw.ResponseWriter.Write(b)
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rw.bytesWritten += n
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return n, err
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}
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func extractAction(path string) string {
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trimmed := strings.Trim(path, "/")
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if trimmed == "" {
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return "root"
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}
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parts := strings.Split(trimmed, "/")
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return parts[len(parts)-1]
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}
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func isBecknAction(action string) bool {
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actions := []string{
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"discover", "select", "init", "confirm", "status", "track",
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"cancel", "update", "rating", "support",
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"on_discover", "on_select", "on_init", "on_confirm", "on_status",
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"on_track", "on_cancel", "on_update", "on_rating", "on_support",
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}
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for _, a := range actions {
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if a == action {
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return true
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}
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}
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return false
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}
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78
pkg/plugin/implementation/otelsetup/cmd/plugin.go
Normal file
78
pkg/plugin/implementation/otelsetup/cmd/plugin.go
Normal file
@@ -0,0 +1,78 @@
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package main
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import (
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"context"
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"errors"
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"strconv"
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"time"
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"github.com/beckn-one/beckn-onix/pkg/log"
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"github.com/beckn-one/beckn-onix/pkg/plugin/implementation/otelsetup"
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"github.com/beckn-one/beckn-onix/pkg/telemetry"
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)
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// metricsProvider implements the MetricsProvider interface for the otelsetup plugin.
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type metricsProvider struct {
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impl otelsetup.Setup
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}
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// New creates a new telemetry provider instance.
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func (m metricsProvider) New(ctx context.Context, config map[string]string) (*telemetry.Provider, func() error, error) {
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if ctx == nil {
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return nil, nil, errors.New("context cannot be nil")
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}
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// Convert map[string]string to telemetry.Config
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telemetryConfig := &telemetry.Config{
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ServiceName: config["serviceName"],
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ServiceVersion: config["serviceVersion"],
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Environment: config["environment"],
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}
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// Parse enableMetrics as boolean
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if enableMetricsStr, ok := config["enableMetrics"]; ok && enableMetricsStr != "" {
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enableMetrics, err := strconv.ParseBool(enableMetricsStr)
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if err != nil {
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log.Warnf(ctx, "Invalid enableMetrics value '%s', defaulting to true: %v", enableMetricsStr, err)
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telemetryConfig.EnableMetrics = true
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} else {
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telemetryConfig.EnableMetrics = enableMetrics
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}
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} else {
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telemetryConfig.EnableMetrics = true // Default to true if not specified or empty
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}
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// Apply defaults if fields are empty
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if telemetryConfig.ServiceName == "" {
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telemetryConfig.ServiceName = telemetry.DefaultConfig().ServiceName
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}
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if telemetryConfig.ServiceVersion == "" {
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telemetryConfig.ServiceVersion = telemetry.DefaultConfig().ServiceVersion
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}
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if telemetryConfig.Environment == "" {
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telemetryConfig.Environment = telemetry.DefaultConfig().Environment
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}
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log.Debugf(ctx, "Telemetry config mapped: %+v", telemetryConfig)
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provider, err := m.impl.New(ctx, telemetryConfig)
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if err != nil {
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log.Errorf(ctx, err, "Failed to create telemetry provider instance")
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return nil, nil, err
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}
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// Wrap the Shutdown function to match the closer signature
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var closer func() error
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if provider != nil && provider.Shutdown != nil {
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closer = func() error {
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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return provider.Shutdown(shutdownCtx)
|
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}
|
||||
}
|
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|
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log.Infof(ctx, "Telemetry provider instance created successfully")
|
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return provider, closer, nil
|
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}
|
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|
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// Provider is the exported plugin instance
|
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var Provider = metricsProvider{}
|
||||
311
pkg/plugin/implementation/otelsetup/cmd/plugin_test.go
Normal file
311
pkg/plugin/implementation/otelsetup/cmd/plugin_test.go
Normal file
@@ -0,0 +1,311 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"context"
|
||||
"testing"
|
||||
|
||||
"github.com/beckn-one/beckn-onix/pkg/telemetry"
|
||||
"github.com/stretchr/testify/assert"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
func TestMetricsProviderNew_Success(t *testing.T) {
|
||||
provider := metricsProvider{}
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
ctx context.Context
|
||||
config map[string]string
|
||||
}{
|
||||
{
|
||||
name: "Valid config with all fields",
|
||||
ctx: context.Background(),
|
||||
config: map[string]string{
|
||||
"serviceName": "test-service",
|
||||
"serviceVersion": "1.0.0",
|
||||
"enableMetrics": "true",
|
||||
"environment": "test",
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "Valid config with minimal fields (uses defaults)",
|
||||
ctx: context.Background(),
|
||||
config: map[string]string{},
|
||||
},
|
||||
{
|
||||
name: "Valid config with enableMetrics false",
|
||||
ctx: context.Background(),
|
||||
config: map[string]string{
|
||||
"enableMetrics": "false",
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "Valid config with partial fields",
|
||||
ctx: context.Background(),
|
||||
config: map[string]string{
|
||||
"serviceName": "custom-service",
|
||||
"serviceVersion": "2.0.0",
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
telemetryProvider, cleanup, err := provider.New(tt.ctx, tt.config)
|
||||
|
||||
require.NoError(t, err, "New() should not return error")
|
||||
require.NotNil(t, telemetryProvider, "New() should return non-nil provider")
|
||||
|
||||
// Test cleanup function if it exists
|
||||
if cleanup != nil {
|
||||
err := cleanup()
|
||||
assert.NoError(t, err, "cleanup() should not return error")
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetricsProviderNew_Failure(t *testing.T) {
|
||||
provider := metricsProvider{}
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
ctx context.Context
|
||||
config map[string]string
|
||||
wantErr bool
|
||||
}{
|
||||
{
|
||||
name: "Nil context",
|
||||
ctx: nil,
|
||||
config: map[string]string{},
|
||||
wantErr: true,
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
telemetryProvider, cleanup, err := provider.New(tt.ctx, tt.config)
|
||||
|
||||
if tt.wantErr {
|
||||
assert.Error(t, err, "New() should return error for nil context")
|
||||
assert.Nil(t, telemetryProvider, "New() should return nil provider on error")
|
||||
assert.Nil(t, cleanup, "New() should return nil cleanup on error")
|
||||
} else {
|
||||
assert.NoError(t, err, "New() should not return error")
|
||||
assert.NotNil(t, telemetryProvider, "New() should return non-nil provider")
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetricsProviderNew_ConfigConversion(t *testing.T) {
|
||||
provider := metricsProvider{}
|
||||
ctx := context.Background()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
config map[string]string
|
||||
expectedConfig *telemetry.Config
|
||||
}{
|
||||
{
|
||||
name: "All fields provided",
|
||||
config: map[string]string{
|
||||
"serviceName": "my-service",
|
||||
"serviceVersion": "3.0.0",
|
||||
"enableMetrics": "true",
|
||||
"environment": "production",
|
||||
},
|
||||
expectedConfig: &telemetry.Config{
|
||||
ServiceName: "my-service",
|
||||
ServiceVersion: "3.0.0",
|
||||
EnableMetrics: true,
|
||||
Environment: "production",
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "Empty config uses defaults",
|
||||
config: map[string]string{},
|
||||
expectedConfig: &telemetry.Config{
|
||||
ServiceName: telemetry.DefaultConfig().ServiceName,
|
||||
ServiceVersion: telemetry.DefaultConfig().ServiceVersion,
|
||||
EnableMetrics: true, // Default when not specified
|
||||
Environment: telemetry.DefaultConfig().Environment,
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "EnableMetrics false",
|
||||
config: map[string]string{
|
||||
"enableMetrics": "false",
|
||||
},
|
||||
expectedConfig: &telemetry.Config{
|
||||
ServiceName: telemetry.DefaultConfig().ServiceName,
|
||||
ServiceVersion: telemetry.DefaultConfig().ServiceVersion,
|
||||
EnableMetrics: false,
|
||||
Environment: telemetry.DefaultConfig().Environment,
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "Invalid enableMetrics defaults to true",
|
||||
config: map[string]string{
|
||||
"enableMetrics": "invalid",
|
||||
},
|
||||
expectedConfig: &telemetry.Config{
|
||||
ServiceName: telemetry.DefaultConfig().ServiceName,
|
||||
ServiceVersion: telemetry.DefaultConfig().ServiceVersion,
|
||||
EnableMetrics: true, // Defaults to true on parse error
|
||||
Environment: telemetry.DefaultConfig().Environment,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
telemetryProvider, cleanup, err := provider.New(ctx, tt.config)
|
||||
|
||||
require.NoError(t, err, "New() should not return error")
|
||||
require.NotNil(t, telemetryProvider, "New() should return non-nil provider")
|
||||
|
||||
// Verify that the provider was created (we can't directly check internal config,
|
||||
// but we can verify the provider is functional)
|
||||
if tt.expectedConfig.EnableMetrics {
|
||||
assert.NotNil(t, telemetryProvider.MetricsHandler, "MetricsHandler should be set when metrics enabled")
|
||||
}
|
||||
|
||||
if cleanup != nil {
|
||||
err := cleanup()
|
||||
assert.NoError(t, err, "cleanup() should not return error")
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetricsProviderNew_BooleanParsing(t *testing.T) {
|
||||
provider := metricsProvider{}
|
||||
ctx := context.Background()
|
||||
|
||||
tests := []struct {
|
||||
name string
|
||||
enableMetrics string
|
||||
expected bool
|
||||
}{
|
||||
{
|
||||
name: "True string",
|
||||
enableMetrics: "true",
|
||||
expected: true,
|
||||
},
|
||||
{
|
||||
name: "False string",
|
||||
enableMetrics: "false",
|
||||
expected: false,
|
||||
},
|
||||
{
|
||||
name: "True uppercase",
|
||||
enableMetrics: "TRUE",
|
||||
expected: true,
|
||||
},
|
||||
{
|
||||
name: "False uppercase",
|
||||
enableMetrics: "FALSE",
|
||||
expected: false,
|
||||
},
|
||||
{
|
||||
name: "Invalid value defaults to true",
|
||||
enableMetrics: "invalid",
|
||||
expected: true, // Defaults to true on parse error
|
||||
},
|
||||
{
|
||||
name: "Empty string defaults to true",
|
||||
enableMetrics: "",
|
||||
expected: true, // Defaults to true when not specified
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
config := map[string]string{
|
||||
"enableMetrics": tt.enableMetrics,
|
||||
}
|
||||
|
||||
telemetryProvider, cleanup, err := provider.New(ctx, config)
|
||||
|
||||
require.NoError(t, err, "New() should not return error")
|
||||
require.NotNil(t, telemetryProvider, "New() should return non-nil provider")
|
||||
|
||||
// Verify metrics handler is set based on enableMetrics
|
||||
if tt.expected {
|
||||
assert.NotNil(t, telemetryProvider.MetricsHandler, "MetricsHandler should be set when metrics enabled")
|
||||
}
|
||||
|
||||
if cleanup != nil {
|
||||
err := cleanup()
|
||||
assert.NoError(t, err, "cleanup() should not return error")
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetricsProviderNew_CleanupFunction(t *testing.T) {
|
||||
provider := metricsProvider{}
|
||||
ctx := context.Background()
|
||||
|
||||
config := map[string]string{
|
||||
"serviceName": "test-service",
|
||||
"serviceVersion": "1.0.0",
|
||||
"enableMetrics": "true",
|
||||
"environment": "test",
|
||||
}
|
||||
|
||||
telemetryProvider, cleanup, err := provider.New(ctx, config)
|
||||
|
||||
require.NoError(t, err, "New() should not return error")
|
||||
require.NotNil(t, telemetryProvider, "New() should return non-nil provider")
|
||||
require.NotNil(t, cleanup, "New() should return non-nil cleanup function")
|
||||
|
||||
// Test that cleanup can be called successfully
|
||||
err = cleanup()
|
||||
assert.NoError(t, err, "cleanup() should not return error")
|
||||
}
|
||||
|
||||
func TestProviderVariable(t *testing.T) {
|
||||
assert.NotNil(t, Provider, "Provider should not be nil")
|
||||
|
||||
// Verify Provider implements the interface correctly
|
||||
ctx := context.Background()
|
||||
config := map[string]string{
|
||||
"serviceName": "test",
|
||||
"serviceVersion": "1.0.0",
|
||||
"enableMetrics": "true",
|
||||
}
|
||||
|
||||
telemetryProvider, cleanup, err := Provider.New(ctx, config)
|
||||
|
||||
require.NoError(t, err, "Provider.New() should not return error")
|
||||
require.NotNil(t, telemetryProvider, "Provider.New() should return non-nil provider")
|
||||
|
||||
if cleanup != nil {
|
||||
err := cleanup()
|
||||
assert.NoError(t, err, "cleanup() should not return error")
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetricsProviderNew_DefaultValues(t *testing.T) {
|
||||
provider := metricsProvider{}
|
||||
ctx := context.Background()
|
||||
|
||||
// Test with completely empty config
|
||||
config := map[string]string{}
|
||||
|
||||
telemetryProvider, cleanup, err := provider.New(ctx, config)
|
||||
|
||||
require.NoError(t, err, "New() should not return error with empty config")
|
||||
require.NotNil(t, telemetryProvider, "New() should return non-nil provider")
|
||||
|
||||
// Verify defaults are applied by checking that provider is functional
|
||||
assert.NotNil(t, telemetryProvider.MetricsHandler, "MetricsHandler should be set with defaults")
|
||||
|
||||
if cleanup != nil {
|
||||
err := cleanup()
|
||||
assert.NoError(t, err, "cleanup() should not return error")
|
||||
}
|
||||
}
|
||||
|
||||
22
pkg/plugin/implementation/otelsetup/otelsetup.go
Normal file
22
pkg/plugin/implementation/otelsetup/otelsetup.go
Normal file
@@ -0,0 +1,22 @@
|
||||
package otelsetup
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
|
||||
"github.com/beckn-one/beckn-onix/pkg/telemetry"
|
||||
)
|
||||
|
||||
// Setup wires the telemetry provider using the shared telemetry package. This
|
||||
// is the concrete implementation behind the MetricsProvider interface.
|
||||
type Setup struct{}
|
||||
|
||||
// New initializes the underlying telemetry provider. The returned provider
|
||||
// exposes the HTTP handler and shutdown hooks that the core application can
|
||||
// manage directly.
|
||||
func (Setup) New(ctx context.Context, cfg *telemetry.Config) (*telemetry.Provider, error) {
|
||||
if cfg == nil {
|
||||
return nil, fmt.Errorf("telemetry config cannot be nil")
|
||||
}
|
||||
return telemetry.NewProvider(ctx, cfg)
|
||||
}
|
||||
Reference in New Issue
Block a user