CLI tool to make structured logging human-readable.
go install github.com/bamsammich/chop@latestWrite structured logs in a human-readable way.
Usage:
chop [path] [flags]
Flags:
-f, --format strings tuples of field names to print and column width (default [message=60])
-h, --help help for chop
-a, --print-all print all fields; fields without format defined will be printed as JSON
chop takes logs that look like this:
> cat example/app.log
initializing app
{"timestamp":"2022/01/01 01:00:00", "message": "App has started", "level": "INFO"}
{"timestamp":"2022/01/01 01:00:01", "message": "Processing records", "level": "INFO"}
{"timestamp":"2022/01/01 01:03:00", "message": "Error processing records: timeout", "level": "ERROR"}
terminating appAnd prints them like this:
> chop ./example/app.log --format message=30 -a
message _fields
0 initializing app -
1 App has started {"level":"INFO","timestamp":"2022/01/01 01:00:00"}
2 Processing records {"level":"INFO","timestamp":"2022/01/01 01:00:01"}
3 Error processing records {"exception":"timeout","level":"ERROR","timestamp":"2022/01/01 01:03:00"}
4 terminating app -To add more/custom fields to chop's output, pass additional fields as columns:
> chop ./example/app.log --format timestamp=19,level=5,message=50,_fields=25 -a
timestamp level message _fields
0 - - initializing app -
2 2022/01/01 01:00:01 INFO Processing records {}
3 2022/01/01 01:03:00 ERROR Error processing records {"exception":"timeout"}
4 - - terminating app -chop also accepts input from stdin:
> flog -f json -d 1s -n 10 | chop --format datetime=26,host=15,user-identifier=20,method=6,status=3,request=50
datetime host user-identifier method status request
0 24/May/2023:21:00:13 -0400 211.105.219.117 - GET 401 /dynamic
1 24/May/2023:21:00:14 -0400 89.4.252.66 beatty7336 PATCH 302 /communities/iterate/seamless/rich
2 24/May/2023:21:00:15 -0400 91.45.224.98 - PATCH 405 /dot-com/enable/synthesize
3 24/May/2023:21:00:16 -0400 113.159.187.73 - POST 500 /revolutionize/viral
4 24/May/2023:21:00:17 -0400 149.165.249.24 mckenzie2588 POST 201 /next-generation
5 24/May/2023:21:00:18 -0400 108.189.36.207 - GET 204 /one-to-one
6 24/May/2023:21:00:19 -0400 219.22.174.217 bauch6671 HEAD 203 /best-of-breed
7 24/May/2023:21:00:20 -0400 239.198.210.73 berge6168 DELETE 501 /platforms/compelling
8 24/May/2023:21:00:21 -0400 151.206.144.149 - GET 403 /web-readiness/front-end/one-to-one/productize
9 24/May/2023:21:00:22 -0400 79.183.125.13 hilpert2613 PUT 406 /mission-critical/proactive/networks/magnetic