Doing slightly more interesting stuff with some real data

redis-with-ruby/Gemfile

@@ -1,4 +1,5 @@
 source :rubygems
 
+gem 'fastercsv'
 gem 'hiredis'
 gem 'redis'

redis-with-ruby/Gemfile.lock

@@ -1,6 +1,7 @@
 GEM
   remote: http://rubygems.org/
   specs:
+    fastercsv (1.5.4)
     hiredis (0.4.4)
     redis (2.2.2)
 
@@ -8,5 +9,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  fastercsv
   hiredis
   redis

redis-with-ruby/earthquakes.rb

@@ -0,0 +1,54 @@
+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'
+
+  def initialize
+    @redis = Redis.new
+    @logger = Logger.new(STDOUT)
+    @logger.formatter = proc do |severity, datetime, progname, msg|
+      "#{datetime}: #{msg}\n"
+    end
+  end
+
+  def load_data
+    open(DATA_URL) do |f|
+      CSV.parse(f.read, :headers => true) do |row|
+        @redis.multi do |r|
+          @logger.info("Adding earthquake #{row['Eqid']}")
+          r.sadd('earthquakes', row['Eqid'])
+          row.headers.each do |header|
+            r.hset("eqid:#{row['Eqid']}", header, row[header])
+          end
+        end
+      end
+    end
+  end
+
+  def dump_data
+    @redis.smembers('earthquakes').each do |eqid|
+      @logger.info(
+        "Earthquake #{eqid} 'Src': #{
+            @redis.hget("eqid:#{eqid}", 'Src')}"
+      )
+    end
+  end
+end
+
+
+def main
+  eq = Earthquakes.new
+  eq.load_data
+  eq.dump_data
+end
+
+
+if $0 == __FILE__
+  main
+end