json-log-viewer

Corrected and extended code for forks:

• https://github.com/gistia/json-log-viewer
• https://github.com/kiciro/json-log-viewer

Changes:

• custom column in main panel
• reload file
• autoreload when the file changes
• search in all log fields
• displaying help after pressing F1

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
• enter - display details
• / to search
• ? to search
• n to search again
• s to sort
• i to toggle ascending/descending 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
• A to first viewport line
• G to last viewport line
• C to center viewport line
• w to wrap toggle
• W to watch file toggle
• q to quit

Install

npm install --global json-log-viewer

Configuration

The configuration is in the .json-log-viewer.json file The program looks for configuration in the current directory. Then it tries to find the configuration in the home directory.

Sample configuration:

{
  "columns": [
    { "title": "Timestamp", "key": "timestamp" },
    { "title": "Level", "key": "level", "format": "L" },
    { "title": "D", "key": "data", "format": "*" },
    { "title": "Message", "key": "message" }
  ]
}

Format:

• L - log level with colors
• * - space if extra data is empty, otherwise * (star)
• (space) - space if field is empty or undefined

Usage

jv application.log.2017-01-01 --sort timestamp --desc

Params:

• --sort, -s - sort by next argument
• --level, -l - log level
• --desc, -d - descending sort

Screenshots

Details view

Filters

Log level selection

License

MIT