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Spree Wombat

Connect your SpreeCommerce Storefront to Wombat, providing push API and webhook handlers

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Installation

Add spree_wombat to your Gemfile:

gem 'spree_wombat', git: '[email protected]:spree/spree_wombat.git', branch: 'master'

Bundle your dependencies and run the installation generator:

bundle
bundle exec rails g spree_wombat:install

Add your Wombat credentials to config/initializers/wombat.rb:

Spree::Wombat::Config.configure do |config|
  config.connection_token = "YOUR TOKEN"
  config.connection_id = "YOUR CONNECTION ID"
end

Configuration

All the configuration is done inside the initializer here: config/initializers/wombat.rb all the default settings can be found there as well. Below we will explain all of them

push_objects

The push_objects is an array of model names that are selected to push to Wombat. We use these as keys in other places as well to configure how the payload is serialized and to keep track of the last time we pushed the objects.

config.push_objects = ["Spree::Order", "Spree::Product"]

By default we only push Spree::Order and Spree::Product models.

payload_builder

To push the data to Wombat we need to configure the way on how to construct the JSON payload.

config.payload_builder = {
  "Spree::Order"  => {:serializer => "Spree::Wombat::OrderSerializer", :root => "orders"},
  "Spree::Product" => {:serializer => "Spree::Wombat::ProductSerializer", :root => "products"},
}

The payload builder is a hash, the key is the model name we also use in the push_objects config.

Each model has a serializer and a root field that defines the serializer we use to serialize to JSON and the root defines the root node for that JSON.

We have defined serializers for the default objects, you can find them here

To push other objects to Wombat, you only need to add an entry in the push_objects and the payload_builder configurations.

last_pushed_timestamps

For every model we push to Wombat we keep track when we pushed the objects.

Do not add this in config/initializers/wombat.rb otherwise it will reset the data on each restart.

Instead, if you need to reset data or want to update a timestamp for an object you can do so in the console

timestamps = Spree::Wombat::Config[:last_pushed_timestamps]
timestamps["Spree::Order"] = 2.days.ago
Spree::Wombat::Config[:last_pushed_timestamps] = timestamps

This will update the preference in the database and will use your updated timestamp for, in this case, 'Spree::Order'

WebhookController.error_notifier

If you would like to forward WebhookController exceptions to an error notification tool you can configure the WebhookController.error_notifier property with an object that responds to #call and accepts the responder as an argument. e.g. with a proc:

# in config/initializers/wombat.rb:
Rails.application.config.to_prepare do
  Spree::Wombat::WebhookController.error_notifier = ->(responder) do
    Honeybadger.notify(responder.exception)
  end
end

Push to Wombat

To push objects to Wombat we provide you with the following rake task:

bundle exec rake wombat:push_it

This task will collect all the objects from push_objects that are not yet pushed (defined in last_pushed_timestamps) and will push those objects in batches of 10 to Wombat.

You could also add a background task to make that happen, all you need there are these lines:

Spree::Wombat::Config[:push_objects].each do |object|
  Spree::Wombat::Client.push_batches(object)
end

If you want to push Spree::Orders manually for example, you can call this:

Spree::Wombat::Client.push_batches("Spree::Order")

push_url

You can override the default url to push your data to. Normally you will not need to change this though.

config.push_url = "http://mycustomurl"

Create handler for a webhook

bundle exec rails g spree_wombat:webhook my_webhook

this will generate a handler class for the my_webhook webhook in lib/spree/wombat/handler/my_webhook_handler.rb

module Spree
  module Wombat
    module Handler
      class MyWebhookHandler < Base

        def process
          @webhook = @payload[:webhook]

          #insert code here to handle
        end

      end
    end
  end
end

Create custom serializers

bundle exec rails g spree_wombat:serializer Spree::Order MyOrderSerializer

This will generate a serializer for the provided model name, when the model is already configured in the payload_builder we use that serializer name as super class to inherit from. With active_model_serializer you also inherit the attributes so you can keep the existing configuration and only change that what's needed.

The generator will also automatically set the correct configuration in config/initializers/wombat.rb

Testing

First bundle your dependencies, then run rake. rake will default to building the dummy app if it does not exist, then it will run specs. The dummy app can be regenerated by using rake test_app.

bundle
bundle exec rake

Copyright (c) 2014 Spree Commerce, Inc. and other contributors, released under the New BSD License

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