Val (വാ ല്)

• This is supposed to be a library written in server side javascript( node ) and Kefir.js whose goal is to mimic tail -f functionality

Work done so far

• Basic functionality implemented (assuming everything works right) i.e follows the file growth whether the file is appended to/overwritten with content
• On file deletion, file existence is polled till return true and then the whole process is restarted again

Show me how it works and what to expect

// touch chicken.txt 
>> val("chicken.txt", console.log, 1000)

// echo "beef curry" >> chicken.txt
output>> beef curry

// rm chicken.txt
output>> chicken.txt has been deleted  // program doesn't exit polling starts

// echo "beef fried rice" >> chicken.txt
output>> beef fried rice  

Show me how to use it

Check out the example subdirectory to look at how to log postfix logfile to mongo (make sure you have read permission to the logfile)

Pending work

• Make sure it works in non-favourable conditions
• Testing
• The output has yet to be worked on in terms of line breaks/other what-nots
• Stress testing to check if it performs as well as it should, not sure if the recursive call is tail recursive sooooooo gotta check that out as well

The name of this library

• It comes from the Malayalam (South Indian language) word for tail

License

• MIT License