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Ruby client for DataSift
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README.md

DataSift

Gem Version Build Status

The official Ruby library for accessing the DataSift API.

Getting Started

Read our Ruby Getting Started Guide to get started with the DataSift platform. The guide will take you through creating a DataSift account, and activating data sources which you will need to do before using the DataSift API.

Many of the examples and API endpoints used in this library require you have enabled certain data sources before you can receive any data (you should do this at datasift.com/source). Certain API features, such as Historics and Managed Sources will require you have signed up to a monthly subscription before you can access them.

If you are interested in using these features, or would like more information about DataSift, please get in touch!

Install Instructions

sudo gem install datasift

Dependencies

If you're using the source you'll need to install the dependencies.

sudo gem install rest-client multi_json websocket-td

The library will use SSL connections by default. While we recommend using SSL you may disable it if required by passing ':enable_ssl => false' as the third parameter when creating your @config object.

Simple example

This example looks for anything that contains the word "football" in real-time, and simply prints the content to the screen as they come in.

require 'datasift'
@config = {:username => 'DATASIFT_USERNAME', :api_key => 'DATASIFT_API_KEY', :enable_ssl => true}
@datasift = DataSift::Client.new(@config)
csdl = 'interaction.content contains "football"'
filter = @datasift.compile csdl
receivedCount = 0

on_delete = lambda { |stream, m| puts 'We must delete this to be compliant ==> ' + m }
on_error = lambda { |stream, e| puts "A serious error has occurred: #{e.message}" }
on_message = lambda do |message, stream, hash|
  receivedCount += 1
  puts "Received interaction: #{message}"

  if receivedCount >= 5
    puts "Unsubscribing from hash #{hash}"
    stream.unsubscribe hash
  end
end

on_connect = lambda do |stream|
  stream.subscribe(filter[:data][:hash], on_message)
  puts 'Subscribed to '+ filter[:data][:hash]
end

on_datasift_message = lambda do |stream, message, hash|
  #not all messages have a hash
  puts "is_success =  #{message[:is_success]}, is_failure =  #{message[:is_failure]}, is_warning =  #{message[:is_warning]}, is_tick =  #{message[:is_tick]}"
  puts "DataSift Message #{hash} ==> #{message}"
end

conn = DataSift::new_stream(@config, on_delete, on_error, on_connect)
conn.on_datasift_message = on_datasift_message
conn.stream.read_thread.join

See the Understanding the Output Data page on the DataSift Developer site for full details of the data contained within each interaction.

Supported Operating Environment

This version of the client library has been tested, and is known to work against the following language versions and Operating Systems:

Language Versions

  • Ruby 1.9.3 (Seems to work, but NOT officially supported/thoroughly tested)
  • Ruby 2.0.0
  • Ruby 2.1
  • Ruby 2.2

Operating Systems

  • Linux
  • Ubuntu
  • OS X
  • Windows 7/8

License

All code contained in this repository is Copyright 2011-2015 MediaSift Ltd.

This code is released under the BSD license. Please see the LICENSE file for more details.

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