Class: LogParser

Inherits:
Object
  • Object
show all
Defined in:
lib/log_parser.rb

Overview

Takes a log file where each line has the format of:

PAGE_NAME VISITOR_IP

eg.

/about 123.456.789.123

and turns it into a list of ‘page’ objects. The target object to turn each line in the log into is expected to be able to receive page: and visitor: keyword arguments.

Defined Under Namespace

Classes: MalformedLog

Instance Method Summary collapse

Constructor Details

#initialize(page_class: Page) ⇒ LogParser

Returns a new instance of LogParser.



15
16
17
 
# File 'lib/log_parser.rb', line 15

def initialize(page_class: Page)
  @page_class = page_class
end

Instance Method Details

#parse_from_file(file_path:) ⇒ Object

arranging by path in a hash first instead of straight into an Array to avoid an iteration of the whole list so far on each check for existence. Instead, using the quicker lookup by key to then later just extract the values into the list.



23
24
25
26
27
28
29
30
 
# File 'lib/log_parser.rb', line 23

def parse_from_file(file_path:)
  page_views = {}.tap do |pages|
    File.open(file_path).each do |line|
      build_page line, pages
    end
  end
  [].push(*page_views.values)
end

#parse_from_string(string:) ⇒ Object 



32
33
34
35
36
37
38
39
 
# File 'lib/log_parser.rb', line 32

def parse_from_string(string:)
  page_views = {}.tap do |pages|
    string.split("\n").each do |line|
      build_page line, pages
    end
  end
  [].push(*page_views.values)
end