Class: Coppertone::RecordFinder

Inherits:
Object
  • Object
show all
Defined in:
lib/coppertone/record_finder.rb

Overview

A helper class for finding SPF records for a domain.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dns_client, domain) ⇒ RecordFinder

Returns a new instance of RecordFinder.



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# File 'lib/coppertone/record_finder.rb', line 5

def initialize(dns_client, domain)
  @dns_client = dns_client
  @domain = domain
end

Instance Attribute Details

#dns_client ⇒ Object (readonly)

Returns the value of attribute dns_client.



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# File 'lib/coppertone/record_finder.rb', line 4

def dns_client
  @dns_client
end

#domain ⇒ Object (readonly)

Returns the value of attribute domain.



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# File 'lib/coppertone/record_finder.rb', line 4

def domain
  @domain
end

Instance Method Details

#record ⇒ Object 



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# File 'lib/coppertone/record_finder.rb', line 10

def record
  @record ||=
    begin
      validate_txt_records
      spf_dns_record = txt_records.first
      return nil unless spf_dns_record
      Record.new(spf_dns_record)
    end
end

#txt_records ⇒ Object 



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# File 'lib/coppertone/record_finder.rb', line 20

def txt_records
  @txt_records ||=
    begin
      if Coppertone::Utils::DomainUtils.valid?(domain)
        dns_client.fetch_txt_records(domain).map { |r| r[:text] }
                  .select { |r| Record.record?(r) }
      else
        []
      end
    end
end

#validate_txt_records ⇒ Object

Raises:



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# File 'lib/coppertone/record_finder.rb', line 32

def validate_txt_records
  raise AmbiguousSpfRecordError if txt_records.size > 1
end