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https://github.com/gistia/json-log-viewer
Powerful terminal based viewer for JSON logs using ncurses.
https://github.com/gistia/json-log-viewer
javascript json log viewer
Last synced: 15 days ago
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Powerful terminal based viewer for JSON logs using ncurses.
- Host: GitHub
- URL: https://github.com/gistia/json-log-viewer
- Owner: gistia
- Created: 2017-09-26T00:40:27.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2022-12-07T14:18:54.000Z (almost 2 years ago)
- Last Synced: 2024-10-28T11:01:31.790Z (16 days ago)
- Topics: javascript, json, log, viewer
- Language: JavaScript
- Homepage: http://gistia.com
- Size: 4.68 MB
- Stars: 260
- Watchers: 6
- Forks: 35
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# json-log-viewer
[](https://badge.fury.io/js/json-log-viewer)
> Powerful terminal based viewer for JSON logs using ncurses.
**json-log-viewer** is a feature intensive viewer and analyze tool for JSON logs created by libraries like [https://github.com/winstonjs/winston](winston).
Features:
- completely operated by hotkeys
- powerful command line arguments
- sort by timestamp, level or message
- filter by any field or metadata
- search
Hotkeys:
- `arrows` and `page up/down` to move
- `/` to search
- `n` to search again
- `s` to sort
- `f` to filter
- `l` to filter by level
- `g` to go to line
- `0` to go to first line
- `$` to go to last line
- `q` to quit
## Install
```bash
npm install --global json-log-viewer
```
## Usage
```bash
jv application.log.2017-01-01 --sort -timestamp
```
### Configuration
The default expected log format include fields `timestamp`, `level` and `message`. If the log file you're trying to parse doesn't include those fields, you can create a config file on your HOME path called `.json-log-viewer`.
For example, if your log lines look like this:
```json
{
"message":
"Matched route \"**_heartbeat_check\" (parameters: \"_controller\": \"**\\Controller\\**Controller::heartbeatCheckAction\", \"_route\": \"**_heartbeat_check\")",
"context": [],
"level": 200,
"level_name": "INFO",
"channel": "request",
"datetime": {
"date": "2017-12-06 09:23:42.253060",
"timezone_type": 3,
"timezone": "Europe/Berlin"
},
"extra": []
}
```
You can create a mapping configuration like this:
```ini
[transform]
level=level_name
timestamp=datetime.date
message=message
extra=$
```
This way the messages will properly be displayed. The `$` has a special meaning: it tells the the old object should be included on the `extra` key on the resulting JSON. The result will look like this:
## Screenshots
__Details view__
__Filters__
__Log level selection__
## License
[MIT](http://vjpr.mit-license.org)