/
endpoint.go
316 lines (273 loc) · 8.11 KB
/
endpoint.go
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package routingtable
import (
"fmt"
"code.cloudfoundry.org/bbs/models"
"code.cloudfoundry.org/lager/v3"
tcpmodels "code.cloudfoundry.org/routing-api/models"
"code.cloudfoundry.org/routing-info/tcp_routes"
)
type EndpointKey struct {
InstanceGUID string
Evacuating bool
}
func (key *EndpointKey) String() string {
return fmt.Sprintf(`{"InstanceGUID": "%s", "Evacuating": %t}`, key.InstanceGUID, key.Evacuating)
}
func NewEndpointKey(instanceGUID string, evacuating bool) EndpointKey {
return EndpointKey{
InstanceGUID: instanceGUID,
Evacuating: evacuating,
}
}
type Address struct {
Host string
Port uint32
}
type Endpoint struct {
InstanceGUID string
Index int32
Host string
ContainerIP string
Port uint32
ContainerPort uint32
TlsProxyPort uint32
ContainerTlsProxyPort uint32
Presence models.ActualLRP_Presence
IsolationSegment string
Since int64
ModificationTag *models.ModificationTag
PreferredAddress models.ActualLRPNetInfo_PreferredAddress
AvailabilityZone string
}
func (e Endpoint) key() EndpointKey {
return EndpointKey{InstanceGUID: e.InstanceGUID, Evacuating: e.Presence == models.ActualLRP_Evacuating}
}
func (e Endpoint) IsDirectInstanceRoute(defaultIsDirectInstanceRoute bool) bool {
switch e.PreferredAddress {
case models.ActualLRPNetInfo_PreferredAddressInstance:
return true
case models.ActualLRPNetInfo_PreferredAddressHost:
return false
case models.ActualLRPNetInfo_PreferredAddressUnknown:
if defaultIsDirectInstanceRoute {
return true
}
}
return false
}
func NewEndpoint(
instanceGUID string, presence models.ActualLRP_Presence,
host, containerIP string,
port, containerPort uint32,
preferredAddress models.ActualLRPNetInfo_PreferredAddress,
modificationTag *models.ModificationTag,
availabiltiyZone string,
) Endpoint {
return Endpoint{
InstanceGUID: instanceGUID,
Presence: presence,
Host: host,
ContainerIP: containerIP,
Port: port,
ContainerPort: containerPort,
PreferredAddress: preferredAddress,
ModificationTag: modificationTag,
AvailabilityZone: availabiltiyZone,
}
}
type ExternalEndpointInfo struct {
RouterGroupGUID string
Port uint32
}
func (info ExternalEndpointInfo) Hash() interface{} {
return info
}
func (info ExternalEndpointInfo) MessageFor(e Endpoint, directInstanceRoute, _ bool) (*RegistryMessage, *tcpmodels.TcpRouteMapping, *RegistryMessage) {
mapping := tcpmodels.NewTcpRouteMapping(
info.RouterGroupGUID,
uint16(info.Port),
e.Host,
uint16(e.Port),
0,
)
if e.IsDirectInstanceRoute(directInstanceRoute) {
mapping = tcpmodels.NewTcpRouteMapping(
info.RouterGroupGUID,
uint16(info.Port),
e.ContainerIP,
uint16(e.ContainerPort),
0,
)
}
return nil, &mapping, nil
}
type ExternalEndpointInfos []ExternalEndpointInfo
func NewExternalEndpointInfo(routerGroupGUID string, port uint32) ExternalEndpointInfo {
return ExternalEndpointInfo{
RouterGroupGUID: routerGroupGUID,
Port: port,
}
}
type Route struct {
Hostname string
RouteServiceUrl string
IsolationSegment string
LogGUID string
Protocol string
MetricTags map[string]*models.MetricTagValue
}
type routeHash struct {
Hostname string
RouteServiceUrl string
IsolationSegment string
LogGUID string
Protocol string
}
// route hash is used to find route differences
// it needs to be dereferenced so that it can be used as a key in a hash map
func (r Route) Hash() interface{} {
return routeHash{
Hostname: r.Hostname,
RouteServiceUrl: r.RouteServiceUrl,
IsolationSegment: r.IsolationSegment,
LogGUID: r.LogGUID,
Protocol: r.Protocol,
}
}
func (r Route) MessageFor(endpoint Endpoint, directInstanceAddress, emitEndpointUpdatedAt bool) (*RegistryMessage, *tcpmodels.TcpRouteMapping, *RegistryMessage) {
generator := RegistryMessageFor
if endpoint.IsDirectInstanceRoute(directInstanceAddress) {
generator = InternalAddressRegistryMessageFor
}
msg := generator(endpoint, r, emitEndpointUpdatedAt)
return &msg, nil, nil
}
type InternalRoute struct {
Hostname string
ContainerIP string
LogGUID string
}
func (r InternalRoute) Hash() interface{} {
return r
}
func (r InternalRoute) MessageFor(endpoint Endpoint, _, emitEndpointUpdatedAt bool) (*RegistryMessage, *tcpmodels.TcpRouteMapping, *RegistryMessage) {
generator := InternalEndpointRegistryMessageFor
msg := generator(endpoint, r, emitEndpointUpdatedAt)
return nil, nil, &msg
}
func (entry RoutableEndpoints) copy() RoutableEndpoints {
clone := RoutableEndpoints{
Domain: entry.Domain,
Endpoints: map[EndpointKey]Endpoint{},
Routes: make([]routeMapping, len(entry.Routes)),
DesiredInstances: entry.DesiredInstances,
ModificationTag: entry.ModificationTag,
}
copy(clone.Routes, entry.Routes)
for k, v := range entry.Endpoints {
clone.Endpoints[k] = v
}
return clone
}
type RoutableEndpoints struct {
Domain string
Routes []routeMapping
Endpoints map[EndpointKey]Endpoint
DesiredInstances int32
ModificationTag *models.ModificationTag
}
type InternalRoutableEndpoints struct {
Routes []InternalRoute
Endpoints map[EndpointKey]Endpoint
DesiredInstances int32
ModificationTag *models.ModificationTag
}
func NewEndpointsFromActual(actualLRP *models.ActualLRP) []Endpoint {
endpoints := []Endpoint{}
for _, portMapping := range actualLRP.Ports {
if portMapping != nil {
endpoint := Endpoint{
InstanceGUID: actualLRP.InstanceGuid,
Index: actualLRP.Index,
Host: actualLRP.Address,
ContainerIP: actualLRP.InstanceAddress,
Port: portMapping.HostPort,
ContainerPort: portMapping.ContainerPort,
Presence: actualLRP.Presence,
ModificationTag: &actualLRP.ModificationTag,
TlsProxyPort: portMapping.HostTlsProxyPort,
ContainerTlsProxyPort: portMapping.ContainerTlsProxyPort,
Since: actualLRP.Since,
PreferredAddress: actualLRP.PreferredAddress,
AvailabilityZone: actualLRP.AvailabilityZone,
}
endpoints = append(endpoints, endpoint)
}
}
return endpoints
}
func NewRoutingKeysFromActual(actualLRP *models.ActualLRP) RoutingKeys {
keys := RoutingKeys{}
for _, portMapping := range actualLRP.Ports {
keys = append(keys, NewRoutingKey(actualLRP.ProcessGuid, portMapping.ContainerPort))
if portMapping.HostTlsProxyPort != 0 && portMapping.ContainerTlsProxyPort != 0 {
keys = append(keys, NewRoutingKey(actualLRP.ProcessGuid, portMapping.ContainerTlsProxyPort))
}
}
return keys
}
func NewRoutingKeysFromDesired(desired *models.DesiredLRP) RoutingKeys {
keys := RoutingKeys{}
routes, err := tcp_routes.TCPRoutesFromRoutingInfo(desired.Routes)
if err != nil {
return keys
}
for _, r := range routes {
keys = append(keys, NewRoutingKey(desired.ProcessGuid, r.ContainerPort))
}
return keys
}
func (e ExternalEndpointInfos) HasNoExternalPorts(logger lager.Logger) bool {
if len(e) == 0 {
logger.Debug("no-external-port")
return true
}
// This originally checked if Port was 0, I think to see if it was a zero value, check and make sure
return false
}
type RoutingKeys []RoutingKey
type RoutingKey struct {
ProcessGUID string
ContainerPort uint32
}
func NewRoutingKey(processGUID string, containerPort uint32) RoutingKey {
return RoutingKey{
ProcessGUID: processGUID,
ContainerPort: containerPort,
}
}
func (e ExternalEndpointInfos) ContainsExternalPort(port uint32) bool {
for _, existing := range e {
if existing.Port == port {
return true
}
}
return false
}
func (lhs RoutingKeys) Remove(rhs RoutingKeys) RoutingKeys {
result := RoutingKeys{}
for _, lhsKey := range lhs {
if !rhs.containsRoutingKey(lhsKey) {
result = append(result, lhsKey)
}
}
return result
}
func (lhs RoutingKeys) containsRoutingKey(routingKey RoutingKey) bool {
for _, lhsKey := range lhs {
if lhsKey == routingKey {
return true
}
}
return false
}