{
"id": "tumbling_window_dataflow",
"target": "x86-64-unknown-linux-gnu",
"system_addr": "127.0.0.1:3001",
"mode": "debug",
"nodes": [
    {
        "id": "node_1",
        "parallelism": 1,
        "kind": {
            "Source": {
                "source_type": {
                    "Scalar": "I32"
                },
                "successors": [
                    {
                        "Local": {
                            "id": "node_2"
                        }
                    }
                ],
                "kind": {
                    "Socket": { "addr": "127.0.0.1:5001", "kind": "udp"}
                }
            }
        }
    },
    {
      "id" : "node_2",
      "parallelism" : 1,
      "kind" : {
        "Window": {
            "channel_strategy" : "Forward",
            "predecessor" : "node1",
            "successors" : [
              {
                "Local" : {
                  "id" : "node_3"
                }
              }
            ],
            "assigner" : {
              "Tumbling" : {
                "length" : 60
              }
            },
            "window_function" : {
              "input_type": {
                  "Scalar": "I32"
              },
              "output_type": {
                  "Scalar": "I64"
              },
              "builder_type": {
                  "Appender": {
                      "elem_ty": {
                          "Scalar": "I32"
                      }
                  }
              },
              "builder" : "||appender[i32]",
              "udf" : "|e:i32,w:appender[i32]| merge(w,e):appender[i32]",
              "materialiser" : "|agg:appender[i32]| len(result(agg)):i64"
            },
            "time_kind" : "Ingestion",
            "window_kind" : "All"
          }
        }
    },
      {
        "id": "node_3",
        "parallelism": 1,
        "kind": {
            "Sink": {
                "sink_type": {
                    "Scalar": "I64"
                },

                "predecessor": "node_2",
                "kind": "Debug"
            }
        }
      }
]
}