feat(backend): add job metrics

backend/cmd/main.go

@@ -98,7 +98,9 @@ func main() {
 	scriptSvc := service.NewScriptServiceWithInterpreters(h.Repo, scriptRepo)
 	scriptHandlers := handlers.NewScriptHandlers(scriptSvc, cmdTracker)
 	jobsHandlers := handlers.NewJobsHandlers(cmdTracker, scriptSvc,
-		os.Getenv("WHEREAMI") /* our address for redirects */)
+		os.Getenv("WHEREAMI"), /* our address for redirects */
+		jobRepo,
+	)
 
 	// Initialize script management service and handlers
 	scriptManageSvc := service.NewScriptService(h.Repo)
@@ -206,6 +208,8 @@ func main() {
 		{
 			jobsGroup.POST("", jobsHandlers.AddJob)
 			jobsGroup.POST("/:id/wait", jobsHandlers.WaitJob)
+			jobsGroup.GET("/metrics", jobsHandlers.GetJobMetrics)
+			jobsGroup.POST("/check_cmd", jobsHandlers.CheckCmd)
 		}
 
 		// Agent registration

backend/internal/handlers/jobs.go

@@ -6,9 +6,11 @@ import (
 	"net/http"
 	"os/exec"
 	"strconv"
+	"time"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/grpcsrv/commander"
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/models"
+	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/repository"
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/service"
 	"github.com/gin-gonic/gin"
 )
@@ -17,10 +19,11 @@ type JobsHandlers struct {
 	tracker  *commander.ConnTracker
 	svc      *service.ScriptService
 	whereami string
+	jobRepo  *repository.JobRepository
 }
 
-func NewJobsHandlers(tracker *commander.ConnTracker, svc *service.ScriptService, whereami string) JobsHandlers {
+func NewJobsHandlers(tracker *commander.ConnTracker, svc *service.ScriptService, whereami string, jobRepo *repository.JobRepository) JobsHandlers {
-	return JobsHandlers{tracker: tracker, svc: svc, whereami: whereami}
+	return JobsHandlers{tracker: tracker, svc: svc, whereami: whereami, jobRepo: jobRepo}
 }
 
 // AddJobIn is the request body for creating a job.
@@ -197,3 +200,46 @@ type CheckCmdIn struct {
 type CheckCmdOut struct {
 	Exists bool `json:"exists"`
 }
+
+// JobMetricsOut is the response body for the job metrics endpoint.
+type JobMetricsOut struct {
+	Total   int    `json:"total"`
+	Success int    `json:"success"`
+	Failed  int    `json:"failed"`
+	Pending int    `json:"pending"`
+	Period  string `json:"period"`
+}
+
+// GetJobMetrics returns job success metrics over a parameterized period.
+// @Summary Get job metrics
+// @Description Returns total, successful, failed, and pending job counts over the given period
+// @Tags jobs
+// @Produce json
+// @Param period query string false "Time period (e.g. 1h, 24h, 7d)" default(24h)
+// @Success 200 {object} JobMetricsOut
+// @Failure 400 {object} map[string]string
+// @Security Bearer
+// @Router /jobs/metrics [get]
+func (h *JobsHandlers) GetJobMetrics(c *gin.Context) {
+	periodStr := c.DefaultQuery("period", "24h")
+	period, err := time.ParseDuration(periodStr)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid period, use Go duration format (e.g. 1h, 24h, 7d)"})
+		return
+	}
+
+	since := time.Now().Add(-period)
+	metrics, err := h.jobRepo.GetJobMetrics(c.Request.Context(), since)
+	if err != nil {
+		c.Error(err)
+		return
+	}
+
+	c.JSON(http.StatusOK, JobMetricsOut{
+		Total:   metrics.Total,
+		Success: metrics.Success,
+		Failed:  metrics.Failed,
+		Pending: metrics.Pending,
+		Period:  periodStr,
+	})
+}

backend/internal/repository/job_repository.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"encoding/json"
 	"fmt"
+	"time"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/models"
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/storage"
@@ -103,3 +104,29 @@ func (r *JobRepository) GetJobByID(ctx context.Context, jid int64) (models.Job,
 	job.Stdin = stdinVal
 	return job, nil
 }
+
+type JobMetrics struct {
+	Total     int
+	Success   int
+	Failed    int
+	Pending   int
+}
+
+// GetJobMetrics returns job success metrics for jobs updated since the given time.
+// A successful job has status == 0, failed has status != 0, pending has status == 0 with empty stdout/stderr.
+func (r *JobRepository) GetJobMetrics(ctx context.Context, since time.Time) (JobMetrics, error) {
+	var m JobMetrics
+	err := r.DB.QueryRowContext(ctx,
+		`SELECT
+			COUNT(*),
+			SUM(CASE WHEN status = 0 AND (stdout != '' OR stderr != '') THEN 1 ELSE 0 END),
+			SUM(CASE WHEN status != 0 THEN 1 ELSE 0 END),
+			SUM(CASE WHEN status = 0 AND stdout = '' AND stderr = '' THEN 1 ELSE 0 END)
+		FROM jobs WHERE updated_at >= ?`,
+		since,
+	).Scan(&m.Total, &m.Success, &m.Failed, &m.Pending)
+	if err != nil {
+		return JobMetrics{}, err
+	}
+	return m, nil
+}