config.json

{
  // Required, only one value for now

  "version": "1.0",

  // Required. Path to the fail we will tail
  "source": "/var/log/system.log",

  // Required. Must be an array of objects
  "widgets": [
    // Raw Log widgets
    // Display all log lines
    {
      "type": "raw", // required
      "name": "Raw Logs", // Required, must unique accross all widgets
      "col": 0, // required, integer
      "colspan": 3, // required, integer
      "row": 0, // required, integer
      "rowspan": 3, // required, integer
      "prefixTrimIndex": 0, // optional, integer. Remove the N first character of the line
      "highlights": {
        // optional, objecct
        "lines": [
          {
            "color": "red",
            "match": "error"
          },
          {
            "color": "yellow",
            "match": "warning"
          }
        ]
      }
    },
    {
      "type": "filter", // required
      "name": "Errors and Warnings", // Required, must unique accross all widgets
      "col": 0, // required, integer
      "colspan": 3, // required, integer
      "row": 3, // required, integer
      "rowspan": 1, // required, integer

      "match": "error|warning",

      "prefixTrimIndex": 0, // optional, integer. Remove the N first character of the line
      "highlights": {
        // optional, objecct
        "lines": [
          {
            "color": "red",
            "match": "error"
          },
          {
            "color": "yellow",
            "match": "warning"
          }
        ]
      }
    },
    {
      "type": "counter",
      "name": "Sonos App Error type",
      "match": "<Error> ([a-z]+)",
      "col": 3,
      "colspan": 1,
      "row": 0,
      "rowspan": 2
    }
  ]
}