feat(service): add pagination to GetJobs endpoint

GetJobs now accepts page/page_size query parameters and returns JobListResponse instead of raw array. Uses in-memory pagination matching GetJobHistory pattern.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/handler/job.go

@@ -46,16 +46,30 @@ func (h *JobHandler) SubmitJob(c *gin.Context) {
 	server.Created(c, resp)
 }
 
-// GetJobs handles GET /api/v1/jobs.
+// GetJobs handles GET /api/v1/jobs with pagination.
 func (h *JobHandler) GetJobs(c *gin.Context) {
-	jobs, err := h.jobSvc.GetJobs(c.Request.Context())
+	var query model.JobListQuery
+	if err := c.ShouldBindQuery(&query); err != nil {
+		h.logger.Warn("bad request", zap.String("method", "GetJobs"), zap.String("error", "invalid query params"))
+		server.BadRequest(c, "invalid query params")
+		return
+	}
+
+	if query.Page < 1 {
+		query.Page = 1
+	}
+	if query.PageSize < 1 {
+		query.PageSize = 20
+	}
+
+	resp, err := h.jobSvc.GetJobs(c.Request.Context(), &query)
 	if err != nil {
 		h.logger.Error("handler error", zap.String("method", "GetJobs"), zap.Int("status", http.StatusInternalServerError), zap.Error(err))
 		server.InternalError(c, err.Error())
 		return
 	}
 
-	server.OK(c, jobs)
+	server.OK(c, resp)
 }
 
 // GetJob handles GET /api/v1/jobs/:id.

internal/handler/job_test.go

@@ -188,7 +188,7 @@ func TestGetJobs_Success(t *testing.T) {
 
 	router := setupJobRouter(handler)
 
-	req := httptest.NewRequest(http.MethodGet, "/api/v1/jobs", nil)
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/jobs?page=1&page_size=10", nil)
 	w := httptest.NewRecorder()
 
 	router.ServeHTTP(w, req)
@@ -202,6 +202,93 @@ func TestGetJobs_Success(t *testing.T) {
 	if !resp["success"].(bool) {
 		t.Fatal("expected success=true")
 	}
+	data := resp["data"].(map[string]interface{})
+	jobs := data["jobs"].([]interface{})
+	if len(jobs) != 2 {
+		t.Fatalf("expected 2 jobs, got %d", len(jobs))
+	}
+	if int(data["total"].(float64)) != 2 {
+		t.Errorf("expected total=2, got %v", data["total"])
+	}
+	if int(data["page"].(float64)) != 1 {
+		t.Errorf("expected page=1, got %v", data["page"])
+	}
+	if int(data["page_size"].(float64)) != 10 {
+		t.Errorf("expected page_size=10, got %v", data["page_size"])
+	}
+}
+
+func TestGetJobs_Pagination(t *testing.T) {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/slurm/v0.0.40/jobs", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(slurm.OpenapiJobInfoResp{
+			Jobs: []slurm.JobInfo{
+				{JobID: slurm.Ptr(int32(1)), Name: slurm.Ptr("job1")},
+				{JobID: slurm.Ptr(int32(2)), Name: slurm.Ptr("job2")},
+				{JobID: slurm.Ptr(int32(3)), Name: slurm.Ptr("job3")},
+			},
+		})
+	})
+	srv, handler := setupJobHandler(mux)
+	defer srv.Close()
+
+	router := setupJobRouter(handler)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/jobs?page=2&page_size=1", nil)
+	w := httptest.NewRecorder()
+
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	var resp map[string]interface{}
+	json.Unmarshal(w.Body.Bytes(), &resp)
+	data := resp["data"].(map[string]interface{})
+	jobs := data["jobs"].([]interface{})
+	if len(jobs) != 1 {
+		t.Fatalf("expected 1 job on page 2, got %d", len(jobs))
+	}
+	if int(data["total"].(float64)) != 3 {
+		t.Errorf("expected total=3, got %v", data["total"])
+	}
+	jobData := jobs[0].(map[string]interface{})
+	if int(jobData["job_id"].(float64)) != 2 {
+		t.Errorf("expected job_id=2 on page 2, got %v", jobData["job_id"])
+	}
+}
+
+func TestGetJobs_DefaultPagination(t *testing.T) {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/slurm/v0.0.40/jobs", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(slurm.OpenapiJobInfoResp{Jobs: []slurm.JobInfo{}})
+	})
+	srv, handler := setupJobHandler(mux)
+	defer srv.Close()
+
+	router := setupJobRouter(handler)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/jobs", nil)
+	w := httptest.NewRecorder()
+
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	var resp map[string]interface{}
+	json.Unmarshal(w.Body.Bytes(), &resp)
+	data := resp["data"].(map[string]interface{})
+	if int(data["page"].(float64)) != 1 {
+		t.Errorf("expected default page=1, got %v", data["page"])
+	}
+	if int(data["page_size"].(float64)) != 20 {
+		t.Errorf("expected default page_size=20, got %v", data["page_size"])
+	}
 }
 
 func TestGetJob_Success(t *testing.T) {

internal/model/job.go

@@ -66,6 +66,12 @@ type JobListResponse struct {
 	PageSize int           `json:"page_size"` // 每页条数
 }
 
+// JobListQuery contains pagination parameters for active job listing.
+type JobListQuery struct {
+	Page     int `form:"page,default=1" json:"page,omitempty"`            // 页码 (从 1 开始)
+	PageSize int `form:"page_size,default=20" json:"page_size,omitempty"` // 每页条数
+}
+
 // JobHistoryQuery contains query parameters for job history.
 type JobHistoryQuery struct {
 	Users       string `form:"users" json:"users,omitempty"`                    // 按用户名过滤 (逗号分隔)

internal/service/job_service.go

@@ -82,8 +82,8 @@ func (s *JobService) SubmitJob(ctx context.Context, req *model.SubmitJobRequest)
 	return resp, nil
 }
 
-// GetJobs lists all current jobs from Slurm.
-func (s *JobService) GetJobs(ctx context.Context) ([]model.JobResponse, error) {
+// GetJobs lists all current jobs from Slurm with in-memory pagination.
+func (s *JobService) GetJobs(ctx context.Context, query *model.JobListQuery) (*model.JobListResponse, error) {
 	s.logger.Debug("slurm API request",
 		zap.String("operation", "GetJobs"),
 	)
@@ -109,11 +109,36 @@ func (s *JobService) GetJobs(ctx context.Context) ([]model.JobResponse, error) {
 		zap.Any("body", result),
 	)
 
-	jobs := make([]model.JobResponse, 0, len(result.Jobs))
+	allJobs := make([]model.JobResponse, 0, len(result.Jobs))
 	for i := range result.Jobs {
-		jobs = append(jobs, mapJobInfo(&result.Jobs[i]))
+		allJobs = append(allJobs, mapJobInfo(&result.Jobs[i]))
 	}
-	return jobs, nil
+
+	total := len(allJobs)
+	page := query.Page
+	pageSize := query.PageSize
+	if page < 1 {
+		page = 1
+	}
+	if pageSize < 1 {
+		pageSize = 20
+	}
+
+	startIdx := (page - 1) * pageSize
+	end := startIdx + pageSize
+	if startIdx > total {
+		startIdx = total
+	}
+	if end > total {
+		end = total
+	}
+
+	return &model.JobListResponse{
+		Jobs:     allJobs[startIdx:end],
+		Total:    total,
+		Page:     page,
+		PageSize: pageSize,
+	}, nil
 }
 
 // GetJob retrieves a single job by ID. If the job is not found in the active

internal/service/job_service_test.go

@@ -149,14 +149,17 @@ func TestGetJobs(t *testing.T) {
 	defer cleanup()
 
 	svc := NewJobService(client, zap.NewNop())
-	jobs, err := svc.GetJobs(context.Background())
+	result, err := svc.GetJobs(context.Background(), &model.JobListQuery{Page: 1, PageSize: 20})
 	if err != nil {
 		t.Fatalf("GetJobs: %v", err)
 	}
-	if len(jobs) != 1 {
-		t.Fatalf("expected 1 job, got %d", len(jobs))
+	if result.Total != 1 {
+		t.Fatalf("expected total 1, got %d", result.Total)
 	}
-	j := jobs[0]
+	if len(result.Jobs) != 1 {
+		t.Fatalf("expected 1 job, got %d", len(result.Jobs))
+	}
+	j := result.Jobs[0]
 	if j.JobID != 100 {
 		t.Errorf("expected JobID 100, got %d", j.JobID)
 	}
@@ -175,6 +178,12 @@ func TestGetJobs(t *testing.T) {
 	if j.Nodes != "node01" {
 		t.Errorf("expected Nodes node01, got %s", j.Nodes)
 	}
+	if result.Page != 1 {
+		t.Errorf("expected Page 1, got %d", result.Page)
+	}
+	if result.PageSize != 20 {
+		t.Errorf("expected PageSize 20, got %d", result.PageSize)
+	}
 }
 
 func TestGetJob(t *testing.T) {
@@ -621,7 +630,7 @@ func TestJobService_GetJobs_ErrorLog(t *testing.T) {
 	defer srv.Close()
 
 	svc, recorded := newJobServiceWithObserver(srv)
-	_, err := svc.GetJobs(context.Background())
+	_, err := svc.GetJobs(context.Background(), &model.JobListQuery{Page: 1, PageSize: 20})
 	if err == nil {
 		t.Fatal("expected error, got nil")
 	}