cedar.json

{
  "nodes": [
      {
        "node_name": "montreal",
        "subscribers":[
            {"topic_name":"arkansas", "msg_type":"stamped4_int32"}
          ],
        "publishers": [
              {"topic_name": "danube", "msg_type": "stamped_int64", "freq_hz": 64},
              {"topic_name": "amazon", "msg_type": "stamped9_float32", "freq_hz": 64},
              {"topic_name": "ganges", "msg_type": "stamped4_int32", "freq_hz": 64},
              {"topic_name": "nile", "msg_type": "stamped4_int32", "freq_hz": 64}
          ],
        "executor_id":1
      },

      {
        "node_name": "munich",
        "subscribers":[
            {"topic_name":"danube", "msg_type":"stamped_int64"},
            {"topic_name":"amazon", "msg_type": "stamped9_float32"}
          ],
        "publishers": [
            {"topic_name":"rhine", "msg_type": "stamped4_int32", "freq_hz": 64}
          ],
        "executor_id":2
      },

      {
        "node_name": "hamburg",
        "subscribers":[
            {"topic_name":"danube", "msg_type":"stamped_int64"},
            {"topic_name":"amazon", "msg_type": "stamped9_float32"},
            {"topic_name":"ganges", "msg_type":"stamped4_int32"},
            {"topic_name":"nile", "msg_type":"stamped4_int32"}
          ],
        "publishers": [
            {"topic_name": "parana", "msg_type": "stamped3_float32", "freq_hz": 64}
          ],
        "executor_id":3
      },

      {
        "node_name": "osaka",
        "subscribers":[
            {"topic_name":"parana", "msg_type":"stamped3_float32"}
          ],
        "publishers": [
            {"topic_name":"salween", "msg_type":"stamped12_float32", "freq_hz": 10}
          ],
        "executor_id":4
      },

      {
        "node_name": "mandalay",
        "subscribers":[
            {"topic_name":"rhine", "msg_type":"stamped4_int32"},
            {"topic_name":"salween", "msg_type":"stamped12_float32"}
          ],
        "publishers": [
            {"topic_name":"missouri", "msg_type": "stamped_vector", "msg_size": 10000, "freq_hz": 10}
          ],
        "executor_id":5
      },

      {
        "node_name": "ponce",
        "subscribers":[
            {"topic_name":"rhine", "msg_type":"stamped4_int32"},
            {"topic_name":"missouri", "msg_type":"stamped_vector"},
            {"topic_name":"salween", "msg_type":"stamped12_float32"},
            {"topic_name":"volga", "msg_type":"stamped_int64"}
          ],
        "publishers": [
            {"topic_name": "mekong", "msg_type": "stamped_vector", "msg_size": 100, "freq_hz": 2},
            {"topic_name": "congo", "msg_type": "stamped4_int32", "freq_hz": 10}
          ],
        "executor_id":6
      },

      {
        "node_name": "barcelona",
        "subscribers":[
            {"topic_name":"mekong", "msg_type":"stamped_vector"}
          ],
        "publishers": [
            {"topic_name": "lena", "msg_type": "stamped_vector", "msg_size": 50, "freq_hz": 10}
          ],
        "executor_id":7
      },

      {
        "node_name": "georgetown",
        "subscribers":[
            {"topic_name":"lena", "msg_type":"stamped_vector"}
          ],
        "publishers": [
            {"topic_name": "volga", "msg_type": "stamped_int64", "freq_hz": 2}
          ],
        "executor_id":8
      },

      {
        "node_name": "geneva",
        "subscribers":[
            {"topic_name":"congo", "msg_type":"stamped4_int32"},
            {"topic_name":"rhine", "msg_type":"stamped4_int32"},
            {"topic_name":"parana", "msg_type":"stamped3_float32"}
          ],
        "publishers": [
            {"topic_name": "arkansas", "msg_type": "stamped4_int32", "freq_hz": 10}
          ],
        "executor_id":9
      }
    ]
}