38 lines
1.2 KiB
Ruby
38 lines
1.2 KiB
Ruby
module JamRuby
|
|
class MaxMindGeo < ActiveRecord::Base
|
|
|
|
self.table_name = 'max_mind_geo'
|
|
|
|
|
|
def self.import_from_max_mind(file)
|
|
# File Geo-124
|
|
# Format:
|
|
# startIpNum,endIpNum,country,region,city,postalCode,latitude,longitude,dmaCode,areaCode
|
|
|
|
MaxMindGeo.transaction do
|
|
MaxMindGeo.delete_all
|
|
File.open(file, 'r:ISO-8859-1') do |io|
|
|
MaxMindGeo.pg_copy_from io, :map => { 'startIpNum' => 'ip_bottom', 'endIpNum' => 'ip_top', 'country' => 'country', 'region' => 'region', 'city' => 'city'}, :columns => [:startIpNum, :endIpNum, :country, :region, :city] do |row|
|
|
row[0] = ip_address_to_int(row[0])
|
|
row[1] = ip_address_to_int(row[1])
|
|
row.delete_at(5)
|
|
row.delete_at(5)
|
|
row.delete_at(5)
|
|
row.delete_at(5)
|
|
row.delete_at(5)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
# Make an IP address fit in a signed int. Just divide it by 2, as the least significant part
|
|
# just can't possibly matter. We can verify this if needed. My guess is the entire bottom octet is
|
|
# actually irrelevant
|
|
def self.ip_address_to_int(ip)
|
|
ip.split('.').inject(0) {|total,value| (total << 8 ) + value.to_i} / 2
|
|
end
|
|
end
|
|
|
|
|
|
end |