Nik Afiq
657b6aeb22
- Add bootstrap package to initialize application components including logger, tracer, and HTTP server. - Create config package to load runtime settings from environment variables. - Implement observability features including logging, metrics, and tracing. - Add health check and hello use cases with corresponding HTTP handlers. - Introduce middleware for request ID, access logging, metrics, and recovery. - Set up HTTP router with defined routes for health and hello endpoints. - Include tests for health and hello endpoints to ensure proper functionality. - Add OpenTelemetry collector configuration for trace exporting.
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package middleware
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import (
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"fmt"
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"net/http"
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"github.com/gin-gonic/gin"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/codes"
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"go.opentelemetry.io/otel/propagation"
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"go.opentelemetry.io/otel/trace"
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)
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func Tracing(tracer trace.Tracer) gin.HandlerFunc {
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return func(c *gin.Context) {
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ctx := otel.GetTextMapPropagator().Extract(c.Request.Context(), propagation.HeaderCarrier(c.Request.Header))
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spanName := fmt.Sprintf("%s %s", c.Request.Method, c.Request.URL.Path)
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ctx, span := tracer.Start(
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ctx,
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spanName,
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trace.WithSpanKind(trace.SpanKindServer),
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trace.WithAttributes(
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attribute.String("http.request.method", c.Request.Method),
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),
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)
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defer span.End()
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c.Request = c.Request.WithContext(ctx)
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c.Next()
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route := c.FullPath()
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if route == "" {
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route = "/unknown"
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}
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status := c.Writer.Status()
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span.SetName(fmt.Sprintf("%s %s", c.Request.Method, route))
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span.SetAttributes(
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attribute.String("http.route", route),
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attribute.Int("http.response.status_code", status),
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)
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if status >= http.StatusInternalServerError {
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span.SetStatus(codes.Error, http.StatusText(status))
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}
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if len(c.Errors) > 0 {
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for _, err := range c.Errors {
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span.RecordError(err)
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}
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span.SetStatus(codes.Error, c.Errors.String())
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}
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}
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}
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