You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
1.8 KiB
82 lines
1.8 KiB
require 'csv'
|
|
require 'redis/connection/hiredis'
|
|
require 'redis'
|
|
|
|
require 'logger'
|
|
require 'open-uri'
|
|
|
|
|
|
class Earthquakes
|
|
DATA_URL = 'http://earthquake.usgs.gov/earthquakes/catalogs/eqs7day-M1.txt'
|
|
|
|
attr_accessor :id_set, :region_set
|
|
|
|
def initialize
|
|
@redis = Redis.new
|
|
@id_set = 'earthquakes'
|
|
@region_set = 'earthquake-regions'
|
|
|
|
@logger = Logger.new(STDOUT)
|
|
@logger.formatter = proc do |severity, datetime, progname, msg|
|
|
"#{datetime}: #{msg}\n"
|
|
end
|
|
end
|
|
|
|
def get_info(earthquake_id)
|
|
if not /^eqid:/.match(earthquake_id)
|
|
earthquake_id = "eqid:#{earthquake_id}"
|
|
end
|
|
|
|
@redis.hgetall(earthquake_id)
|
|
end
|
|
|
|
def all_ids
|
|
@redis.smembers(@id_set).map { |i| i.gsub(/^eqid:/, '') }
|
|
end
|
|
|
|
def all_regions
|
|
@redis.smembers(@region_set).map { |r| r.gsub(/^eqregion:/, '') }
|
|
end
|
|
|
|
def drop_all
|
|
@logger.info('Removing data for each earthquake')
|
|
all_ids.each do |i|
|
|
@logger.info("Removing data for earthquake #{i.gsub(/^eqid:/, '')}")
|
|
@redis.del(i)
|
|
end
|
|
|
|
@logger.info('Removing earthquake id set')
|
|
@redis.del(@id_set)
|
|
|
|
@logger.info('Removing earthquake region set')
|
|
@redis.del(@region_set)
|
|
end
|
|
|
|
def load_data
|
|
data = CSV.parse(
|
|
open(DATA_URL).read, :headers => true, :header_converters => [:symbol]
|
|
)
|
|
|
|
data.each do |row|
|
|
@redis.multi do |r|
|
|
@logger.info("Adding earthquake #{row[:eqid]}")
|
|
key = "eqid:#{row[:eqid].downcase}"
|
|
r.sadd(@id_set, key)
|
|
row.headers.each do |header|
|
|
r.hset(key, header.downcase, row[header])
|
|
end
|
|
|
|
region_key = "eqregion:#{row[:region].downcase}"
|
|
|
|
r.sadd(region_key, key)
|
|
r.sadd(@region_set, region_key)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
if $0 == __FILE__
|
|
Earthquakes.new.send(ARGV.first)
|
|
end
|