howmuch/internal/pkg/middleware/requestid.go

package middleware

import "github.com/gin-gonic/gin"

const requestID = "X-Request-Id"

func RequestID() gin.HandlerFunc {
	return func(ctx *gin.Context) {
		var rid string

		if rid = ctx.GetString(requestID); rid != "" {
			// request id exists already
			ctx.Next()
		}

		if rid = ctx.GetHeader(requestID); rid != "" {
			ctx.Set(requestID, rid)
		}
	}
}