add getSentiment.rb which uses the AlchemyAPI to retrieve sentiment

getSentiment.rb

@@ -0,0 +1,55 @@
+#!/usr/bin/env ruby
+require 'rubygems'
+require 'json'
+require 'time'
+require 'date'
+require 'mongo'
+require '../AlchemyAPI.rb'
+require 'pp'
+
+MONGO_HOST = ENV["MONGO_HOST"]
+raise(StandardError,"Set Mongo hostname in  ENV: 'MONGO_HOST'") if !MONGO_HOST
+MONGO_PORT = ENV["MONGO_PORT"]
+raise(StandardError,"Set Mongo port in  ENV: 'MONGO_PORT'") if !MONGO_PORT
+MONGO_USER = ENV["MONGO_USER"]
+raise(StandardError,"Set Mongo user in  ENV: 'MONGO_USER'") if !MONGO_USER
+MONGO_PASSWORD = ENV["MONGO_PASSWORD"]
+raise(StandardError,"Set Mongo user in  ENV: 'MONGO_PASSWORD'") if !MONGO_PASSWORD
+
+db = Mongo::Connection.new(MONGO_HOST, MONGO_PORT.to_i).db("gs")
+raise(StandardError, "Couldn't authenticate, exiting") if !db.authenticate(MONGO_USER, MONGO_PASSWORD)
+
+topicsColl = db.collection("topics")
+
+# Create an AlchemyAPI object.
+alchemyObj = AlchemyAPI.new();
+
+# Load the API key from disk.
+alchemyObj.loadAPIKey("api_key.txt");
+
+url = id = ARGV[0]
+# Get sentiment for a web URL.
+# result = alchemyObj.URLGetTextSentiment(url);
+# puts result
+
+# # Retrieve targeted sentiment
+# result = alchemyObj.URLGetTargetedSentiment(url, "Walmart", AlchemyAPI::OutputMode::XML, tsparamObj);
+# puts result
+
+# Create a parameters object.
+kparamObj = AlchemyAPI_KeywordParams.new();
+
+# Enable keyword-targeted sentiment.
+kparamObj.setSentiment(1);
+
+# Retrieve keywords with keyword-targeted sentiment.
+result = alchemyObj.URLGetRankedKeywords(url, AlchemyAPI::OutputMode::JSON, kparamObj);
+pp result
+printf("Just keywords\n");
+pp result["status"]
+print result
+pp result["\r\n    \"status\""]
+
+
+
+