fix front end issues

src/frontend/apiserver/backend/convert_pure.go

@@ -2,6 +2,7 @@ package backend
 
 import (
 	"apiserver/models"
+	"encoding/json"
 	"time"
 )
 
@@ -110,6 +111,7 @@ type rawJobData struct {
 	startTime  int64
 	finishTime int64
 	submit     *rawSubmitData
+	execHosts  []string
 }
 
 // rawWorkerData mirrors the C xce_worker_t fields used by the Go model.
@@ -189,6 +191,22 @@ func rawJobToModel(r rawJobData) *models.JobInfo {
 	if r.finishTime > 0 {
 		info.EndTime = time.Unix(r.finishTime, 0)
 	}
+	if len(r.execHosts) > 0 {
+		type hostSlot struct {
+			HostName string `json:"host_name"`
+			NumSlots int    `json:"num_slots"`
+		}
+		type execHostsJSON struct {
+			HostSlots []hostSlot `json:"host_slots"`
+			NumHosts  int        `json:"num_hosts"`
+		}
+		slots := make([]hostSlot, len(r.execHosts))
+		for i, h := range r.execHosts {
+			slots[i] = hostSlot{HostName: h, NumSlots: 1}
+		}
+		data, _ := json.Marshal(execHostsJSON{HostSlots: slots, NumHosts: len(slots)})
+		info.ExecHosts = models.Jsonb{String: string(data)}
+	}
 	return info
 }