Retryable method

gistfile1.rb

# Options:
# * :tries - Number of retries to perform. Defaults to 1.
# * :on - The Exception on which a retry will be performed. Defaults to Exception, which retries on any Exception.
#
# Example
# =======
#   retryable(:tries => 1, :on => OpenURI::HTTPError) do
#     # your code here
#   end
#
def retryable(options = {}, &block)
  opts = { :tries => 2, :on => Exception }.merge(options)
  
  retry_exception, retries = opts[:on], opts[:tries]
  
  begin
    return yield
  rescue retry_exception => e
    Rails.logger.error "Error while trying to access Salesforce: #{e.to_s}"
    Rails.logger.error e.class
    Rails.logger.error e.backtrace.join("\n")
    
    init_salesforce unless e.class == ActiveResource::ResourceNotFound
    retry if (retries -= 1) > 0
  end
  
  yield
end