File Watcher CLI

This CLI has two options. The first one is to watch a created project while the second one is for creating a project. This was made for a school project. This Project watches a continuous file that is being streamed to and saves the latest data to a postgres database.

Start

npx file-watcher-hig

Important to note

• The database needs to be created before for it to work.
• This project only works for CSV files. It could be .txt or .dat but as long as they are comma separated.

Create a new Project

When choosing create a project option.

• The project name, this is where eventually all the created files will be. This is also where your log file will be.
• Log file name, you should name this exactly as the log files that is being written to. The file could either is being appended to or replaced with another file with new data. (default name log.dat)
• Lines to skip, is a integer value that determines how many lines to skip from the log file, incase the log file begins without any "real data".

The next few options are for postgres credentials. (Results in an error if credentials are incorrect).

Start watching a project

When choosing Start watching a project option.

• You will first get a list of created projects (CLI will exit if there isn't any projects created before).
• Then you will need to choose the log file you named.
• Lastly you will be presented with a list of tables according to your database. This is where the data will be stored. That is why it's important to create the database beforehand.

Num file

The num file is created to store the latest line that was read from the log file. This is to assure that when exiting the program, it should remember what line it read, so it can continue the next time it starts reading from the previous read line.