The purpose of the resource. This field can be either PRIVATE,
REGIONAL_MANAGED_PROXY, PRIVATE_SERVICE_CONNECT, or
INTERNAL_HTTPS_LOAD_BALANCER. PRIVATE is the default purpose for
user-created subnets or subnets that are automatically created in
auto mode networks. A subnet with purpose set to
REGIONAL_MANAGED_PROXY is a user-created subnetwork that is reserved
for regional Envoy-based load balancers. A subnet with purpose set
to PRIVATE_SERVICE_CONNECT is used to publish services using Private
Service Connect. A subnet with purpose set to
INTERNAL_HTTPS_LOAD_BALANCER is a proxy-only subnet that can be used
only by regional internal HTTP(S) load balancers. Note that
REGIONAL_MANAGED_PROXY is the preferred setting for all regional
Envoy load balancers. If unspecified, the subnet purpose defaults to
PRIVATE. The enableFlowLogs field isn't supported if the subnet
purpose field is set to REGIONAL_MANAGED_PROXY.
Values:
UNDEFINED_PURPOSE (0):
A value indicating that the enum field is not
set.
INTERNAL_HTTPS_LOAD_BALANCER (248748889):
Subnet reserved for Internal HTTP(S) Load
Balancing.
PRIVATE (403485027):
Regular user created or automatically created
subnet.
PRIVATE_RFC_1918 (254902107):
Regular user created or automatically created
subnet.
PRIVATE_SERVICE_CONNECT (48134724):
Subnetworks created for Private Service
Connect in the producer network.
REGIONAL_MANAGED_PROXY (153049966):
Subnetwork used for Regional
Internal/External HTTP(S) Load Balancing.