Class: Zonesync::Route53

Inherits:
Provider show all
Defined in:
lib/zonesync/route53.rb

Instance Attribute Summary

Attributes inherited from Provider

#config

Instance Method Summary collapse

Methods inherited from Provider

#add_with_duplicate_handling, #diff, #diff!, #diffable_records, from, #initialize, #manifest, #records, #write

Constructor Details

This class inherits a constructor from Zonesync::Provider

Instance Method Details

#add(record) ⇒ Object 



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# File 'lib/zonesync/route53.rb', line 85

def add(record)
  add_with_duplicate_handling(record) do
    begin
      # Route53 requires all records with the same name/type to be in a single record set
      existing_records = records.select do |r|
        r.name == record.name && r.type == record.type
      end
      all_records = (existing_records + [record]).uniq

      action = existing_records.empty? ? "CREATE" : "UPSERT"
      change_records(action, all_records)
      invalidate_cache!
    rescue RuntimeError => e
      if e.message.include?("RRSet already exists")
        raise DuplicateRecordError.new(record, "Route53 duplicate record error")
      else
        raise
      end
    end
  end
end

#change(old_record, new_record) ⇒ Object 



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# File 'lib/zonesync/route53.rb', line 70

def change(old_record, new_record)
  new_set = if old_record.manifest? || old_record.checksum?
    # our metadata records are singletons, always replace
    [new_record]
  else
    existing_records = records.select do |r|
      r.name == old_record.name && r.type == old_record.type
    end
    (existing_records.reject { |r| r.identical_to?(old_record) } + [new_record]).uniq
  end

  change_records("UPSERT", new_set)
  invalidate_cache!
end

#read ⇒ Object 



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# File 'lib/zonesync/route53.rb', line 10

def read
  @read ||= begin
    doc = REXML::Document.new(http.get(""))
    records = doc.elements.collect("*/ResourceRecordSets/ResourceRecordSet") do |record_set|
      to_records(record_set)
    end.flatten.sort
    records.map(&:to_s).join("\n") + "\n"
  end
end

#remove(record) ⇒ Object 



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# File 'lib/zonesync/route53.rb', line 20

def remove(record)
  # Route53 requires all records with the same name/type to be managed together as a record set
  existing_records = records.select do |r|
    r.name == record.name && r.type == record.type
  end

  if existing_records.length == 1
    change_record("DELETE", record)
  else
    remaining_records = existing_records.reject { |r| r == record }

    grouped = [
      [existing_records, "DELETE"],
      *(remaining_records.any? ? [[remaining_records, "CREATE"]] : [])
    ]

    http.post("", ERB.new("      <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n      <ChangeResourceRecordSetsRequest xmlns=\"https://route53.amazonaws.com/doc/2013-04-01/\">\n        <ChangeBatch>\n          <Changes>\n            <%- grouped.each do |records_list, action| -%>\n            <%- records_grouped = records_list.group_by { |r| [r.name, r.type, r.ttl] } -%>\n            <%- records_grouped.each do |(name, type, ttl), group_records| -%>\n            <Change>\n              <Action><%= action %></Action>\n              <ResourceRecordSet>\n                <Name><%= name %></Name>\n                <Type><%= type %></Type>\n                <TTL><%= ttl %></TTL>\n                <ResourceRecords>\n                  <%- group_records.each do |group_record| -%>\n                  <ResourceRecord>\n                    <Value><%= rdata_for_api(group_record) %></Value>\n                  </ResourceRecord>\n                  <%- end -%>\n                </ResourceRecords>\n              </ResourceRecordSet>\n            </Change>\n            <%- end -%>\n            <%- end -%>\n          </Changes>\n        </ChangeBatch>\n      </ChangeResourceRecordSetsRequest>\n    XML\n\n    invalidate_cache!\n  end\nend\n", trim_mode: "-").result(binding))