1{
2  "topology_description": {
3    "type": "ReplicaSetNoPrimary",
4    "servers": [
5      {
6        "address": "a:27017",
7        "type": "RSSecondary",
8        "avg_rtt_ms": 5,
9        "lastUpdateTime": 0,
10        "maxWireVersion": 5,
11        "lastWrite": {
12          "lastWriteDate": {
13            "$numberLong": "1000001"
14          }
15        }
16      },
17      {
18        "address": "b:27017",
19        "type": "RSSecondary",
20        "avg_rtt_ms": 5,
21        "lastUpdateTime": 0,
22        "maxWireVersion": 5,
23        "lastWrite": {
24          "lastWriteDate": {
25            "$numberLong": "1"
26          }
27        }
28      }
29    ]
30  },
31  "read_preference": {
32    "mode": "SecondaryPreferred",
33    "maxStalenessSeconds": 120
34  },
35  "suitable_servers": [
36    {
37      "address": "a:27017",
38      "type": "RSSecondary",
39      "avg_rtt_ms": 5,
40      "lastUpdateTime": 0,
41      "maxWireVersion": 5,
42      "lastWrite": {
43        "lastWriteDate": {
44          "$numberLong": "1000001"
45        }
46      }
47    }
48  ],
49  "in_latency_window": [
50    {
51      "address": "a:27017",
52      "type": "RSSecondary",
53      "avg_rtt_ms": 5,
54      "lastUpdateTime": 0,
55      "maxWireVersion": 5,
56      "lastWrite": {
57        "lastWriteDate": {
58          "$numberLong": "1000001"
59        }
60      }
61    }
62  ]
63}
64