Step by Step Guide to Building a Docparser API Integration in Ruby

Introduction

Hey there, fellow Ruby enthusiast! Ready to supercharge your document parsing game? Let's dive into the world of Docparser API integration. This nifty tool will help you extract structured data from documents like a pro. We'll walk through the process, keeping things snappy and to the point.

Prerequisites

Before we jump in, make sure you've got:

• Ruby 2.7+ installed
• The httparty gem (we'll use this for API requests)
• A Docparser API key (grab one from your Docparser account)

Setting up the project

First things first, let's get our project off the ground:

mkdir docparser_integration
cd docparser_integration
bundle init

Now, add this to your Gemfile:

gem 'httparty'

Run bundle install, and we're ready to roll!

Configuring the Docparser client

Let's create a simple client to interact with the Docparser API:

require 'httparty'

class DocparserClient
  include HTTParty
  base_uri 'https://api.docparser.com/v1'

  def initialize(api_key)
    @api_key = api_key
  end

  def api_key
    @api_key
  end
end

Implementing core functionality

Now, let's add some methods to our client for the main operations:

class DocparserClient
  # ... previous code ...

  def upload_document(parser_id, file_path)
    self.class.post("/document/upload/#{parser_id}",
      body: { file: File.new(file_path) },
      headers: { 'API-Key' => api_key }
    )
  end

  def parse_document(parser_id, document_id)
    self.class.post("/document/parse/#{parser_id}",
      body: { document_id: document_id },
      headers: { 'API-Key' => api_key }
    )
  end

  def get_result(parser_id, document_id)
    self.class.get("/result/#{parser_id}/#{document_id}",
      headers: { 'API-Key' => api_key }
    )
  end
end

Error handling and best practices

Let's add some error handling to our methods:

def handle_response(response)
  case response.code
  when 200
    JSON.parse(response.body)
  when 429
    raise "Rate limit exceeded. Try again later."
  else
    raise "API error: #{response.code} - #{response.message}"
  end
end

Don't forget to call handle_response in each of your API methods!

Advanced features

Want to level up? Let's add webhook support:

def set_webhook(parser_id, webhook_url)
  self.class.post("/webhook/#{parser_id}",
    body: { url: webhook_url },
    headers: { 'API-Key' => api_key }
  )
end

Testing the integration

Here's a quick test script to make sure everything's working:

client = DocparserClient.new('your_api_key_here')
parser_id = 'your_parser_id_here'

response = client.upload_document(parser_id, 'path/to/your/document.pdf')
document_id = response['document_id']

client.parse_document(parser_id, document_id)

result = client.get_result(parser_id, document_id)
puts result

Optimizing performance

For better performance, consider implementing caching:

require 'redis'

class CachedDocparserClient < DocparserClient
  def initialize(api_key, redis_url)
    super(api_key)
    @redis = Redis.new(url: redis_url)
  end

  def get_result(parser_id, document_id)
    cache_key = "result:#{parser_id}:#{document_id}"
    cached = @redis.get(cache_key)
    return JSON.parse(cached) if cached

    result = super
    @redis.set(cache_key, result.to_json, ex: 3600) # Cache for 1 hour
    result
  end
end

Conclusion

And there you have it! You've just built a robust Docparser API integration in Ruby. From basic setup to advanced features and optimization, you're now equipped to parse documents like a champ. Remember, the Docparser API has even more to offer, so don't be shy about diving into their docs for more cool features.

Happy parsing, Rubyist! 🚀