node.js.tmpl

    <script>
      // https://stackoverflow.com/a/21903119
      var getUrlParameter = function getUrlParameter(sParam) {
          var sPageURL = decodeURIComponent(window.location.search.substring(1)),
              sURLVariables = sPageURL.split('&'),
              sParameterName,
              i;

          for (i = 0; i < sURLVariables.length; i++) {
              sParameterName = sURLVariables[i].split('=');

              if (sParameterName[0] === sParam) {
                  return sParameterName[1] === undefined ? true : sParameterName[1];
              }
          }
      };

      function update() {
        var node = getUrlParameter("n");
        var stats_url = "http://" + controller_addr + "/get_statistics";
        var nodes_url = "http://" + controller_addr + "/nodes";

        var node_data = {};

        $.ajax({
          url: nodes_url,
          dataType: "json",
          success: function(data) {
            $.each(data, function (i, rec) {
              node_data[rec[0]] = { "name": rec[1], "type": rec[2] };
            })
          },
          error: function(e) {
            $("#error-msg").html("AJAX request to controller API failed: " + e.statusText).addClass("show");
          }
        });

        $.ajax({
          url: stats_url,
          dataType: "json",
          success: function(data) {
            $("#error-msg").removeClass("show");
            // rather inelegant iteration over all domains and vertices
            $.each(data["domains"], function (idx, domain) {
              $.each(domain[1], function (ni, stats) {
                if (ni == node) {
                  $("#node-id").text(ni);
                  $("#node-name").text(node_data[ni]["name"]);
                  $("#desc").text(stats["desc"]);
                  mat_stats = stats["materialized"];
                  if (mat_stats == "Not" || mat_stats == "Full") {
                    $("#mat-status").text(mat_stats);
                  } else if ("Partial" in mat_stats) {
                    if (mat_stats["beyond_materialization_frontier"]) {
                      $("#mat-status").text("Partial (beyond materialization frontier)");
                    } else {
                      $("#mat-status").text("Partial");
                    }
                  }
                  $("#mem-size").text(filesize(stats["mem_size"]));
                  $("#probe-data").text(JSON.stringify(stats["probe_result"]));
                  $("#process-time").text(readableNanosecondFormatter(stats["process_time"]));
                  $("#process-ptime").text(readableNanosecondFormatter(stats["process_ptime"]));
                }
              });
            });
          },
          error: function(e) {
            $("#error-msg").html("AJAX request to controller API failed: " + e.statusText).addClass("show");
          }
        });
      }

      update();
      setInterval(update, 1000);
    </script>