Break JSON file into separate events, removing the header and footer

[mblauw]

I've just started using RegEx and I'm currently looking on a way to extract multiple events from my JSON flight information logs. Here is my props.conf:

[_json_flight_data]
BREAK_ONLY_BEFORE_DATE = false
BREAK_ONLY_BEFORE = ({|[\s+{)
MUST_BREAK_AFTER = (}|}\s+])
SEDCMD-remove_header = s/({\s+.+\s+.+\s+{\s+.+\s+.+\s+.+\s+}\s+.+\s+.+\s+.+\s+.+\s+.+\s+.+\s+.+\s+.+\s+.+\s+[)//g
SEDCMD-remove_trailing_commas = s/},/}/g
SEDCMD-remove_footer = s/(].\s+.+\s+.+\s+.+\s+.+\s+})//g

(I know the style is VERY ugly haha.. But it should still work, right?)

Here's a part from my log:

{
   "src": 1,
   "feeds": [
      {
         "id": 1,
         "name": "From Consolidator",
         "polarPlot": false
      }
   ],
   "srcFeed": 1,
   "showSil": true,
   "showFlg": true,
   "showPic": true,
   "flgH": 20,
   "flgW": 85,
   "acList": [
      {
         "Id": 4736016,
         "Rcvr": 1,
         "HasSig": false,
         "Icao": "484410",
         "Bad": false,
         "Reg": "PH-AOB",
         "FSeen": "/Date(1489141837845)/",
         "TSecs": 335,
         "CMsgs": 105,
         "Alt": 0,
         "GAlt": 434,
         "InHg": 30.35433,
         "AltT": 0,
         "Call": "KLM729",
         "Lat": 52.313339,
         "Long": 4.76521,
         "PosTime": 1489141920517,
         "Mlat": false,
         "PosStale": true,
         "Tisb": false,
         "Spd": 2,
         "Trak": 213,
         "TrkH": false,
         "Type": "A332",
         "Mdl": "Airbus A330 203",
         "Man": "Airbus",
         "CNum": "686",
         "From": "EHAM Amsterdam Airport Schiphol, Netherlands",
         "To": "TNCM Princess Juliana, Saint Martin, Sint Maarten",
         "Op": "KLM Royal Dutch Airlines",
         "OpIcao": "KLM",
         "Sqk": "",
         "VsiT": 0,
         "Dst": 0.49,
         "Brng": 14.6,
         "WTC": 3,
         "Species": 1,
         "Engines": "2",
         "EngType": 3,
         "EngMount": 0,
         "Mil": false,
         "Cou": "Netherlands",
         "HasPic": false,
         "Interested": false,
         "FlightsCount": 0,
         "Gnd": true,
         "SpdTyp": 0,
         "CallSus": false,
         "Trt": 2,
         "Year": "2005"
      },

(many more events ...)

      {
         "Id": 4735491,
         "Rcvr": 1,
         "HasSig": false,
         "Icao": "484203",
         "Bad": false,
         "Reg": "",
         "FSeen": "/Date(1489114921456)/",
         "TSecs": 27251,
         "CMsgs": 6334,
         "Alt": 0,
         "GAlt": 434,
         "InHg": 30.35433,
         "AltT": 0,
         "Call": "KV1",
         "Lat": 52.31559,
         "Long": 4.74158,
         "PosTime": 1489142165220,
         "Mlat": false,
         "Tisb": false,
         "Spd": 15,
         "Trak": 177,
         "TrkH": false,
         "Type": "-GND",
         "Mdl": "Ground Vehicle",
         "Man": "",
         "Sqk": "3220",
         "Help": false,
         "VsiT": 0,
         "Dst": 1.65,
         "Brng": 296.1,
         "WTC": 0,
         "Species": 7,
         "EngType": 0,
         "EngMount": 0,
         "Mil": false,
         "Cou": "Netherlands",
         "HasPic": false,
         "Interested": false,
         "FlightsCount": 0,
         "Gnd": true,
         "SpdTyp": 0,
         "CallSus": false,
         "Trt": 2
      }
   ],
   "totalAc": 6822,
   "lastDv": "636247117248607567",
   "shtTrlSec": 65,
   "stm": 1489142172423
}

When I try to index my log with these settings, the linebreaking is done right, but the header and footer removal is not being done at all.

Does anybody know where I'm doing this wrong?

[somesoni2 · Accepted solution]

Give this a try. It's missing timestamp related configurations, add per your requirements)

[ <SOURCETYPE NAME> ]
SHOULD_LINEMERGE=false
NO_BINARY_CHECK=true
disabled=false
LINE_BREAKER=([\r\n]+)(?=\s*\{\s*[\r\n]*\s*\"Id\")
SEDCMD-removeheader=s/^(\s*\{\s*[\r\n]*\"src\"(.+[\r\n]*)+)//
SEDCMD-removefooter=s/(\s*\](.+[\r\n]*)+)//

[mblauw]

It's working! Thank you so much! Where have you learned to build up those SED/RegEx commands?