Class: GitHubPages::HealthCheck::Resolver

Inherits:
Object
  • Object
show all
Defined in:
lib/github-pages-health-check/resolver.rb

Constant Summary collapse

DEFAULT_RESOLVER_OPTIONS = 
{
  :retry_times => 2,
  :query_timeout => 5,
  :dnssec => false
}.freeze
PREFERS_AUTHORITATIVE_ANSWER = 
[
  Dnsruby::Types::A,
  Dnsruby::Types::CAA,
  Dnsruby::Types::MX
].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(domain) ⇒ Resolver

Returns a new instance of Resolver.



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# File 'lib/github-pages-health-check/resolver.rb', line 26

def initialize(domain)
  @domain = domain
end

Instance Attribute Details

#domain ⇒ Object (readonly)

Returns the value of attribute domain.



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# File 'lib/github-pages-health-check/resolver.rb', line 24

def domain
  @domain
end

Class Method Details

.default_resolver ⇒ Object 



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# File 'lib/github-pages-health-check/resolver.rb', line 19

def default_resolver
  @default_resolver ||= Dnsruby::Resolver.new(DEFAULT_RESOLVER_OPTIONS)
end

Instance Method Details

#query(type) ⇒ Object 



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# File 'lib/github-pages-health-check/resolver.rb', line 30

def query(type)
  if PREFERS_AUTHORITATIVE_ANSWER.include?(type)
    answer = authoritative_resolver.query(domain, type).answer
    return answer unless answer.empty?
  end

  self.class.default_resolver.query(domain, type).answer
rescue Dnsruby::ResolvTimeout, Dnsruby::ResolvError
  self.class.default_resolver.query(domain, type).answer
end