package awsservicediscovery


// A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
//
// Example:
//   // The code below shows an example of how to instantiate this type.
//   // The values are placeholders you should change.
//   import "github.com/aws/aws-cdk-go/awscdk"
//
//   dnsRecordProperty := &DnsRecordProperty{
//   	Ttl: jsii.Number(123),
//   	Type: jsii.String("type"),
//   }
//
// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-servicediscovery-service-dnsrecord.html
//
type CfnService_DnsRecordProperty struct {
	// The amount of time, in seconds, that you want DNS resolvers to cache the settings for this record.
	//
	// > Alias records don't include a TTL because Route 53 uses the TTL for the AWS resource that an alias record routes traffic to. If you include the `AWS_ALIAS_DNS_NAME` attribute when you submit a [RegisterInstance](https://docs.aws.amazon.com/cloud-map/latest/api/API_RegisterInstance.html) request, the `TTL` value is ignored. Always specify a TTL for the service; you can use a service to register instances that create either alias or non-alias records.
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-servicediscovery-service-dnsrecord.html#cfn-servicediscovery-service-dnsrecord-ttl
	//
	Ttl *float64 `field:"required" json:"ttl" yaml:"ttl"`
	// The type of the resource, which indicates the type of value that Route 53 returns in response to DNS queries.
	//
	// You can specify values for `Type` in the following combinations:
	//
	// - `A`
	// - `AAAA`
	// - `A` and `AAAA`
	// - `SRV`
	// - `CNAME`
	//
	// If you want AWS Cloud Map to create a Route 53 alias record when you register an instance, specify `A` or `AAAA` for `Type` .
	//
	// You specify other settings, such as the IP address for `A` and `AAAA` records, when you register an instance. For more information, see [RegisterInstance](https://docs.aws.amazon.com/cloud-map/latest/api/API_RegisterInstance.html) .
	//
	// The following values are supported:
	//
	// - **A** - Route 53 returns the IP address of the resource in IPv4 format, such as 192.0.2.44.
	// - **AAAA** - Route 53 returns the IP address of the resource in IPv6 format, such as 2001:0db8:85a3:0000:0000:abcd:0001:2345.
	// - **CNAME** - Route 53 returns the domain name of the resource, such as www.example.com. Note the following:
	//
	// - You specify the domain name that you want to route traffic to when you register an instance. For more information, see [Attributes](https://docs.aws.amazon.com/cloud-map/latest/api/API_RegisterInstance.html#cloudmap-RegisterInstance-request-Attributes) in the topic [RegisterInstance](https://docs.aws.amazon.com/cloud-map/latest/api/API_RegisterInstance.html) .
	// - You must specify `WEIGHTED` for the value of `RoutingPolicy` .
	// - You can't specify both `CNAME` for `Type` and settings for `HealthCheckConfig` . If you do, the request will fail with an `InvalidInput` error.
	// - **SRV** - Route 53 returns the value for an `SRV` record. The value for an `SRV` record uses the following values:
	//
	// `priority weight port service-hostname`
	//
	// Note the following about the values:
	//
	// - The values of `priority` and `weight` are both set to `1` and can't be changed.
	// - The value of `port` comes from the value that you specify for the `AWS_INSTANCE_PORT` attribute when you submit a [RegisterInstance](https://docs.aws.amazon.com/cloud-map/latest/api/API_RegisterInstance.html) request.
	// - The value of `service-hostname` is a concatenation of the following values:
	//
	// - The value that you specify for `InstanceId` when you register an instance.
	// - The name of the service.
	// - The name of the namespace.
	//
	// For example, if the value of `InstanceId` is `test` , the name of the service is `backend` , and the name of the namespace is `example.com` , the value of `service-hostname` is:
	//
	// `test.backend.example.com`
	//
	// If you specify settings for an `SRV` record and if you specify values for `AWS_INSTANCE_IPV4` , `AWS_INSTANCE_IPV6` , or both in the `RegisterInstance` request, AWS Cloud Map automatically creates `A` and/or `AAAA` records that have the same name as the value of `service-hostname` in the `SRV` record. You can ignore these records.
	// See: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-servicediscovery-service-dnsrecord.html#cfn-servicediscovery-service-dnsrecord-type
	//
	Type *string `field:"required" json:"type" yaml:"type"`
}