tmckernan / sp_log_parser

LogParser

Parser a log file

Description

Write a ruby script that:

a. Receives a log as argument (webserver.log is provided)

 e.g.: ./parser.rb webserver.log

b. Returns the following:

list of webpages with most page views ordered from most pages views to less page views

 e.g.:
     /home 90 visits
     /index 80 visits
     etc...

list of webpages with most unique page views also ordered

 e.g.:
     /about/2   8 unique views
     /index     5 unique views
     etc.

Approach

Each Line in the logfile is parse into LogData.

The log file is praser in the following steps:

1. A line of the logfile is passed to the LogEntry object.

2. The LogEntry object is saved to the LogData

   The LogData has the following structure { <path> => { <ip> => <visits> } }

3. Counter calulated the number of visits by accepeting the parser data from LogData and returning an array of LogVisits.

• Logvisits is a simple value object which holds path and number of visits.

4. Sorter accepts an Array of LogVisits objects and return sorted array of objects from highest to lowest visits.

5. ParserCli prints the following two tables:

• All visits to a given path order by high to low visits
• Unique visits to a given path order by high to low visits

Usage

Install

1. Clone the repository
2. run bundle install to install gems

Test

• Run specs: bundle exec rspec
• Run linter: bundle exec rubocop

Run Working example

  `./parser.rb webserver.log`

  +------------------+-----------------+
  | Urls order by visits (high to low) |
  +------------------+-----------------+
  | Url              | Visits          |
  +------------------+-----------------+
  | /about/2         | 90              |
  | /contact         | 89              |
  | /index           | 82              |
  | /about           | 81              |
  | /help_page/1     | 80              |
  | /home            | 78              |
  +------------------+-----------------+
  +---------------------+--------------------+
  | Urls order by unique count (high to low) |
  +---------------------+--------------------+
  | Url                 | Visits             |
  +---------------------+--------------------+
  | /help_page/1        | 23                 |
  | /contact            | 23                 |
  | /home               | 23                 |
  | /index              | 23                 |
  | /about/2            | 22                 |
  | /about              | 21                 |
  +---------------------+--------------------+