jl

go-jl

Show the "JSON within JSON" log nicely

Usage

jl command recursively converts JSON within JSON into one JSON structure.

Simple case:

$ cat simple.json
{
    "foo": "{\"bar\":\"{\\\"baz\\\":123}\"}"
}

$ cat simple.json | jl -p
{
 "foo": {
  "bar": {
   "baz": 123
  }
 }
}

Most use cases:

$ cat log.json
{
    "message": "{\"level\":\"info\",\"ts\":1557004280.5372975,\"caller\":\"zap/server_interceptors.go:40\",\"msg\":\"finished unary call with code OK\",\"grpc.start_time\":\"2019-05-04T21:11:20Z\",\"system\":\"grpc\",\"span.kind\":\"server\",\"grpc.service\":\"FooService\",\"grpc.method\":\"GetBar\",\"grpc.code\":\"OK\",\"grpc.time_ms\":248.45199584960938}\n",
    "namespace": "foo-service",
    "podName": "foo-86495899d8-m2vfl",
    "containerName": "foo-service"
}

$ cat log.json | jl -p
{
    "containerName": "foo-service",
    "message": {
        "caller": "zap/server_interceptors.go:40",
        "grpc.code": "OK",
        "grpc.method": "GetBar",
        "grpc.service": "FooService",
        "grpc.start_time": "2019-05-04T21:11:20Z",
        "grpc.time_ms": 248.45199584960938,
        "level": "info",
        "msg": "finished unary call with code OK",
        "span.kind": "server",
        "system": "grpc",
        "ts": 1557004280.5372975
    },
    "namespace": "foo-service",
    "podName": "foo-86495899d8-m2vfl"
}

Full options:

Options:
  -h, --help         Display help (This message) and exit
  -p, --prettify     Prettify the JSON
  -e, --show-error   Set this option to show errors, muted by default
  -v, --version      Display version and build info and exit

Installation

homebrew install

If you are using Mac:

brew tap bayashi/go-jl
brew install bayashi/go-jl/go-jl

binary install

Download binary from here: https://github.com/bayashi/go-jl/releases

go install

If you have golang envvironment:

go install github.com/bayashi/go-jl/cmd/jl@latest

License

MIT License

Author

Dai Okabayashi: https://github.com/bayashi