3dccf80a72
- Estimates cloud vs on-prem costs per active vehicle - Queries feature_table_last_shard from ClickHouse (lightweight) - 85% savings estimate with on-prem (hardware only) - Deployed to cec-prd-cluster-1 (internal only) - Text report endpoint at /cost/report
268 lines
9.5 KiB
Go
268 lines
9.5 KiB
Go
package handlers
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"strconv"
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"strings"
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"time"
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"github.com/fiskerinc/cloud-services/pkg/logger"
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"github.com/fiskerinc/cloud-services/services/cost/services"
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)
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// GetVinCost returns cost data for a specific VIN
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// GET /cost/vin/{vin}?from=2024-01-01&to=2024-01-31
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func GetVinCost(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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// Extract VIN from path
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path := strings.TrimPrefix(r.URL.Path, "/cost/vin/")
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vin := strings.TrimSuffix(path, "/")
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if vin == "" {
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http.Error(w, "VIN required", http.StatusBadRequest)
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return
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}
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from, to := parseTimeRange(r)
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summary, err := services.GetVinCostSummary(vin, from, to)
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if err != nil {
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logger.Error().Err(err).Str("vin", vin).Msg("Failed to get VIN cost")
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http.Error(w, "Failed to get cost data", http.StatusInternalServerError)
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return
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}
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respondJSON(w, summary)
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}
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// GetFleetCost returns fleet-wide cost summary
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// GET /cost/fleet?from=2024-01-01&to=2024-01-31&limit=10
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func GetFleetCost(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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from, to := parseTimeRange(r)
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limit := 10
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if l := r.URL.Query().Get("limit"); l != "" {
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if parsed, err := strconv.Atoi(l); err == nil {
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limit = parsed
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}
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}
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summary, err := services.GetFleetCostSummary(from, to, limit)
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if err != nil {
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logger.Error().Err(err).Msg("Failed to get fleet cost")
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http.Error(w, "Failed to get cost data", http.StatusInternalServerError)
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return
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}
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respondJSON(w, summary)
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}
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// GetCostSummary returns a high-level cost summary
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// GET /cost/summary?period=day|week|month
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func GetCostSummary(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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period := r.URL.Query().Get("period")
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if period == "" {
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period = "day"
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}
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to := time.Now()
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var from time.Time
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switch period {
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case "week":
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from = to.AddDate(0, 0, -7)
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case "month":
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from = to.AddDate(0, -1, 0)
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default:
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from = to.AddDate(0, 0, -1)
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}
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summary, err := services.GetFleetCostSummary(from, to, 5)
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if err != nil {
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logger.Error().Err(err).Msg("Failed to get cost summary")
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http.Error(w, "Failed to get cost data", http.StatusInternalServerError)
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return
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}
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respondJSON(w, map[string]interface{}{
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"period": period,
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"summary": summary,
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"cost_rates": map[string]interface{}{
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"cloud": map[string]float64{
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"cpu_per_core_hour": services.CloudCPUPerCoreHour,
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"memory_per_gb_hour": services.CloudMemoryPerGBHour,
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},
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"onprem": map[string]float64{
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"cpu_per_core_hour": services.OnpremCPUPerCoreHour,
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"memory_per_gb_hour": services.OnpremMemoryPerGBHour,
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},
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},
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})
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}
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// GetCostComparison returns cloud vs on-prem cost comparison
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// GET /cost/comparison?from=2024-01-01&to=2024-01-31
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func GetCostComparison(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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from, to := parseTimeRange(r)
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summary, err := services.GetFleetCostSummary(from, to, 0)
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if err != nil {
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logger.Error().Err(err).Msg("Failed to get cost comparison")
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http.Error(w, "Failed to get cost data", http.StatusInternalServerError)
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return
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}
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comparison := map[string]interface{}{
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"period": map[string]interface{}{
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"from": from,
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"to": to,
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},
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"cloud": map[string]interface{}{
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"total_cost_usd": summary.TotalCloudCost,
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"cost_per_vehicle": 0.0,
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"description": "Azure cloud hosting with managed services",
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},
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"onprem": map[string]interface{}{
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"total_cost_usd": summary.TotalOnpremCost,
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"cost_per_vehicle": 0.0,
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"description": "Self-hosted on owned hardware (amortized)",
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},
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"savings": map[string]interface{}{
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"total_usd": summary.TotalSavings,
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"percent": summary.SavingsPercent,
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"annual_projected": summary.TotalSavings * 12,
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},
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"vehicle_count": summary.VehicleCount,
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}
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if summary.VehicleCount > 0 {
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comparison["cloud"].(map[string]interface{})["cost_per_vehicle"] = summary.TotalCloudCost / float64(summary.VehicleCount)
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comparison["onprem"].(map[string]interface{})["cost_per_vehicle"] = summary.TotalOnpremCost / float64(summary.VehicleCount)
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}
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respondJSON(w, comparison)
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}
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func parseTimeRange(r *http.Request) (from, to time.Time) {
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to = time.Now()
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from = to.AddDate(0, 0, -30) // Default to last 30 days
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if fromStr := r.URL.Query().Get("from"); fromStr != "" {
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if parsed, err := time.Parse("2006-01-02", fromStr); err == nil {
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from = parsed
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}
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}
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if toStr := r.URL.Query().Get("to"); toStr != "" {
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if parsed, err := time.Parse("2006-01-02", toStr); err == nil {
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to = parsed
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}
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}
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return
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}
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func respondJSON(w http.ResponseWriter, data interface{}) {
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w.Header().Set("Content-Type", "application/json")
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if err := json.NewEncoder(w).Encode(data); err != nil {
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logger.Error().Err(err).Msg("Failed to encode JSON response")
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}
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}
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// GetReport returns a plain text cost report
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// GET /cost/report
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func GetReport(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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to := time.Now()
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from := to.AddDate(0, -1, 0) // Last month
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summary, err := services.GetFleetCostSummary(from, to, 10)
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if err != nil {
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logger.Error().Err(err).Msg("Failed to get report data")
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http.Error(w, "Failed to get report data", http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "text/plain")
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report := `
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╔══════════════════════════════════════════════════════════════════╗
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║ COST SERVICE REPORT ║
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╠══════════════════════════════════════════════════════════════════╣
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║ Period: %s to %s
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╠══════════════════════════════════════════════════════════════════╣
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║ FLEET OVERVIEW ║
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║ ─────────────────────────────────────────────────────────────── ║
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║ Active Vehicles: %d
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║ Cloud Cost: $%.2f
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║ On-Prem Cost: $%.2f
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║ Savings: $%.2f (%.1f%%)
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╠══════════════════════════════════════════════════════════════════╣
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║ COST RATES ║
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║ ─────────────────────────────────────────────────────────────── ║
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║ Cloud: CPU $%.3f/core-hr Memory $%.4f/GB-hr
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║ On-Prem: CPU $%.3f/core-hr Memory $%.4f/GB-hr
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╠══════════════════════════════════════════════════════════════════╣
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║ ANNUAL PROJECTION (based on current usage) ║
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║ ─────────────────────────────────────────────────────────────── ║
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║ Cloud Annual: $%.2f
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║ On-Prem Annual: $%.2f
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║ Annual Savings: $%.2f
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╚══════════════════════════════════════════════════════════════════╝
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`
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annualCloud := summary.TotalCloudCost * 12
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annualOnprem := summary.TotalOnpremCost * 12
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annualSavings := annualCloud - annualOnprem
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fmt.Fprintf(w, report,
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from.Format("2006-01-02"), to.Format("2006-01-02"),
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summary.VehicleCount,
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summary.TotalCloudCost,
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summary.TotalOnpremCost,
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summary.TotalSavings, summary.SavingsPercent,
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services.CloudCPUPerCoreHour, services.CloudMemoryPerGBHour,
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services.OnpremCPUPerCoreHour, services.OnpremMemoryPerGBHour,
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annualCloud, annualOnprem, annualSavings,
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)
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// Add top cost VINs if any
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if len(summary.TopCostVins) > 0 {
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fmt.Fprintf(w, "\nTOP COST VEHICLES:\n")
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fmt.Fprintf(w, "%-20s %12s %12s %10s\n", "VIN", "Cloud $", "On-Prem $", "Savings %")
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fmt.Fprintf(w, "%-20s %12s %12s %10s\n", "───────────────────", "──────────", "──────────", "────────")
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for _, v := range summary.TopCostVins {
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fmt.Fprintf(w, "%-20s %12.2f %12.2f %9.1f%%\n",
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truncateVIN(v.VIN), v.TotalCloudCost, v.TotalOnpremCost, v.SavingsPercent)
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}
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}
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}
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func truncateVIN(vin string) string {
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if len(vin) > 20 {
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return vin[:17] + "..."
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}
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return vin
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}
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