gofleece

Command line json validator

Usage of ./gofleece:
  -e=false: Stop if error encountered
  -s=false: Do not produce any output
  -v=false: Verbosity of logging
  -z=false: Acccept a file of zero length as being valid JSON

Features

• One or more JSON files on command line can be processed
• If no file arguments, reads from stdin
• Raw json, gzipped and bzip2ed files transparently processed
• Default: only complains about failures
• Default: does not stop when a json file fails
• Handles very large json files with minumal overhead
• Tested with 2GB JSON file, 9MB virtual, 3.6MB resident.
• Properly sets shell error code

Limitations/dependencies

gofleece is basically a wrapper around encoding/json, so its interpretation of what is json is what encoding/json believes it to be.

TODO

• Presently single threaded: goroutine per file to be validated (limit to max cores; make # routines configuratble)

Example

$ /usr/bin/time -f "%E %M" ./gofleece -v *.json
2015/07/09 23:05:22 util.go:30: Opening: repository_metadata_2014-06-06_150.json
2015/07/09 23:05:22 util.go:49:  File size: 2080284113
2015/07/09 23:05:22 main.go:92: Map
2015/07/09 23:06:47 main.go:55: Valid JSON
2015/07/09 23:06:47 main.go:59: ------------------
2015/07/09 23:06:47 util.go:30: Opening: repository_metadata_2014-06-09_237.json
2015/07/09 23:06:47 util.go:49:  File size: 204
2015/07/09 23:06:47 main.go:92: Map
2015/07/09 23:06:47 main.go:55: Valid JSON
2015/07/09 23:06:47 main.go:59: ------------------
2015/07/09 23:06:47 util.go:30: Opening: repository_metadata_2014-06-10_357.json
2015/07/09 23:06:47 util.go:49:  File size: 506957
2015/07/09 23:06:47 main.go:92: Map
2015/07/09 23:06:47 main.go:55: Valid JSON
2015/07/09 23:06:47 main.go:59: ------------------
2015/07/09 23:06:47 util.go:30: Opening: smallest_array.json
2015/07/09 23:06:47 util.go:49:  File size: 3
2015/07/09 23:06:47 main.go:87: Array
2015/07/09 23:06:47 main.go:55: Valid JSON
2015/07/09 23:06:47 main.go:59: ------------------
2015/07/09 23:06:47 util.go:30: Opening: smallest_map.json
2015/07/09 23:06:47 util.go:49:  File size: 3
2015/07/09 23:06:47 main.go:92: Map
2015/07/09 23:06:47 main.go:55: Valid JSON
2015/07/09 23:06:47 main.go:59: ------------------
1:24.24 3524
$ 

Example 2

$ ./gofleece -s *.json 
$ echo $?
0
$ ./gofleece -s main.go
$ echo $?
1
$

License

GPV v2

Copright (C) 2015 Glen Newton

See LICENSE