Write adapter for microsoft azure in sitemap_generator

Question

I am using sitemap_generator for generating sitemaps in my RoR project.Everything is working fine till now.I am hosting my project on Heroku, which doesn't allow writing to the local filesystem.I still require some write access, because the sitemap files need to be written out before uploading. But I have to use microsoft azure to store my sitemap.The adapters listed in sitemap_generator does not include azure.Could someone point me in the right direction for writing an adapter for azure.

Refering to "Configure carrierwave" in this article I have made a few changes in my code.

But I am not sure only editing the initialiazer file is going to help.In the above article Carrierwave points to the WaveAdapter here which uses CarrierWave::Uploader::Base to upload to any service supported by CarrierWave

config/initializers/azure.rb

Azure.configure do |config|
    config.cache_dir = "#{Rails.root}/tmp/"
    config.storage = :microsoft_azure
    config.permissions = 0666
    config.microsoft_azure_credentials = {
       :provider               => 'azure',
       :storage_account_name      => 'your account name',
       :storage_access_key  => 'your key',
    }
    config.azure_directory  = 'container name'
end

Please help!

Answer 1

I copied my setup from the S3 adapter and from Azure's ruby example

Add the azure blob gem to your Gemfile: gem 'azure-storage-blob'

create config/initializers/sitemap_generator/azure_adapter.rb:

require 'azure/storage/blob'

module SitemapGenerator
  # Class for uploading sitemaps to Azure blobs using azure-storage-blob gem.
  class AzureAdapter
    #
    # @option :storage_account_name [String] Your Azure access key id
    # @option :storage_access_key [String] Your Azure secret access key
    # @option :container [String]
    def initialize
      @storage_account_name = 'your account name'
      @storage_access_key = 'your key'
      @container = 'your container name (created already in Azure)'
    end

    # Call with a SitemapLocation and string data
    def write(location, raw_data)
      SitemapGenerator::FileAdapter.new.write(location, raw_data)

      credentials = {
        storage_account_name: @storage_account_name,
        storage_access_key: @storage_access_key
      }

      client = Azure::Storage::Blob::BlobService.create(credentials)
      container = @container
      content = ::File.open(location.path, 'rb') { |file| file.read }
      client.create_block_blob(container, location.filename, content)
    end
  end
end

• Make sure the container you create in Azure is a 'blob' container so the container is not public but the blobs within are.

and then in config/sitemaps.rb:

SitemapGenerator::Sitemap.sitemaps_host = 'https://[your-azure-address].blob.core.windows.net/'
SitemapGenerator::Sitemap.sitemaps_path = '[your-container-name]/'
SitemapGenerator::Sitemap.adapter = SitemapGenerator::AzureAdapter.new

That should do it!