1{
2  "topology_description": {
3    "type": "ReplicaSetWithPrimary",
4    "servers": [
5      {
6        "address": "b:27017",
7        "avg_rtt_ms": 5,
8        "type": "RSSecondary",
9        "tags": {
10          "data_center": "nyc"
11        }
12      },
13      {
14        "address": "c:27017",
15        "avg_rtt_ms": 100,
16        "type": "RSSecondary",
17        "tags": {
18          "data_center": "nyc"
19        }
20      },
21      {
22        "address": "a:27017",
23        "avg_rtt_ms": 26,
24        "type": "RSPrimary",
25        "tags": {
26          "data_center": "nyc"
27        }
28      }
29    ]
30  },
31  "operation": "read",
32  "read_preference": {
33    "mode": "SecondaryPreferred",
34    "tag_sets": [
35      {
36        "data_center": "nyc"
37      }
38    ]
39  },
40  "suitable_servers": [
41    {
42      "address": "b:27017",
43      "avg_rtt_ms": 5,
44      "type": "RSSecondary",
45      "tags": {
46        "data_center": "nyc"
47      }
48    },
49    {
50      "address": "c:27017",
51      "avg_rtt_ms": 100,
52      "type": "RSSecondary",
53      "tags": {
54        "data_center": "nyc"
55      }
56    }
57  ],
58  "in_latency_window": [
59    {
60      "address": "b:27017",
61      "avg_rtt_ms": 5,
62      "type": "RSSecondary",
63      "tags": {
64        "data_center": "nyc"
65      }
66    }
67  ]
68}
69