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expose_lb.go
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expose_lb.go
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package transformer
import (
"fmt"
"github.com/armory/spinnaker-operator/pkg/apis/spinnaker/interfaces"
"github.com/armory/spinnaker-operator/pkg/util"
"github.com/go-logr/logr"
"net/url"
"strconv"
"strings"
"context"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// exposeLbTr changes hal configurations and manifest files to expose spinnaker using service load balancers
type exposeLbTransformer struct {
*DefaultTransformer
svc interfaces.SpinnakerService
log logr.Logger
client client.Client
}
type exposeLbTransformerGenerator struct{}
func (g *exposeLbTransformerGenerator) NewTransformer(svc interfaces.SpinnakerService,
client client.Client, log logr.Logger) (Transformer, error) {
base := &DefaultTransformer{}
tr := exposeLbTransformer{svc: svc, log: log, client: client, DefaultTransformer: base}
base.ChildTransformer = &tr
return &tr, nil
}
func (g *exposeLbTransformerGenerator) GetName() string {
return "ExposeLB"
}
// TransformConfig is a nop
func (t *exposeLbTransformer) TransformConfig(ctx context.Context) error {
if err := t.setStatusAndOverrideBaseUrl(ctx, util.GateServiceName, util.GateOverrideBaseUrlProp); err != nil {
t.log.Info(fmt.Sprintf("Error setting overrideBaseUrl: %s, ignoring", err))
return err
}
if err := t.setStatusAndOverrideBaseUrl(ctx, util.DeckServiceName, util.DeckOverrideBaseUrlProp); err != nil {
t.log.Info(fmt.Sprintf("Error setting overrideBaseUrl: %s, ignoring", err))
return err
}
return nil
}
func (t *exposeLbTransformer) setStatusAndOverrideBaseUrl(ctx context.Context, serviceName string, overrideUrlName string) error {
statusUrl, isFromOverrideBaseUrl, err := t.findStatusUrl(ctx, serviceName, overrideUrlName)
if err != nil {
return err
}
st := t.svc.GetStatus()
if serviceName == util.GateServiceName {
st.APIUrl = statusUrl
} else if serviceName == util.DeckServiceName {
st.UIUrl = statusUrl
}
if !isFromOverrideBaseUrl {
t.log.Info(fmt.Sprintf("Setting %s overrideBaseUrl to: %s", serviceName, statusUrl))
if err = t.svc.GetSpinnakerConfig().SetHalConfigProp(overrideUrlName, statusUrl); err != nil {
return err
}
}
return nil
}
// findStatusUrl returns the overrideBaseUrl or load balancer url, indicating if it came from overrideBaseUrl
func (t *exposeLbTransformer) findStatusUrl(ctx context.Context, serviceName string, overrideUrlName string) (string, bool, error) {
// ignore error, overrideBaseUrl may not be set in hal config
statusUrl, _ := t.svc.GetSpinnakerConfig().GetHalConfigPropString(ctx, overrideUrlName)
if statusUrl != "" {
return statusUrl, true, nil
}
exp := t.svc.GetExposeConfig()
switch strings.ToLower(exp.Type) {
case "":
return "", false, nil
case "service":
isSSLEnabled := false
var err error
if serviceName == util.GateServiceName {
if isSSLEnabled, err = t.svc.GetSpinnakerConfig().GetHalConfigPropBool(util.GateSSLEnabledProp, false); err != nil {
isSSLEnabled = false
}
} else if serviceName == util.DeckServiceName {
if isSSLEnabled, err = t.svc.GetSpinnakerConfig().GetHalConfigPropBool(util.DeckSSLEnabledProp, false); err != nil {
isSSLEnabled = false
}
}
lbUrl, err := util.FindLoadBalancerUrl(serviceName, t.svc.GetNamespace(), t.client, isSSLEnabled)
desiredUrl, err := t.generateOverrideUrl(ctx, serviceName, lbUrl)
if err != nil {
return "", false, err
}
return desiredUrl, false, err
default:
return "", false, fmt.Errorf("expose type %s not supported. Valid types: \"service\"", exp.Type)
}
}
// generateOverrideUrl replaces the lb port for the one coming from spin expose config, if any
func (t *exposeLbTransformer) generateOverrideUrl(ctx context.Context, serviceName string, lbUrl string) (string, error) {
parsedLbUrl, err := url.Parse(lbUrl)
if err != nil {
return "", err
}
desiredPort := util.GetDesiredExposePort(ctx, serviceName[len("spin-"):], int32(80), t.svc)
return util.BuildUrl(parsedLbUrl.Scheme, parsedLbUrl.Hostname(), desiredPort), nil
}
func (t *exposeLbTransformer) transformServiceManifest(ctx context.Context, svcName string, svc *corev1.Service) error {
exp := t.svc.GetExposeConfig()
if strings.ToLower(exp.Type) != "service" {
return nil
}
if svcName != "gate" && svcName != "deck" {
return nil
}
overrideUrlKeyName := ""
defaultPort := util.GetDesiredExposePort(ctx, svcName, int32(80), t.svc)
if svcName == "gate" {
overrideUrlKeyName = util.GateOverrideBaseUrlProp
} else if svcName == "deck" {
overrideUrlKeyName = util.DeckOverrideBaseUrlProp
}
if err := t.applyPortChanges(ctx, fmt.Sprintf("%s-tcp", svcName), defaultPort, overrideUrlKeyName, svc); err != nil {
return err
}
t.applyExposeServiceConfig(svc, svcName)
return nil
}
func (t *exposeLbTransformer) applyExposeServiceConfig(svc *corev1.Service, serviceName string) {
exp := t.svc.GetExposeConfig()
if strings.ToLower(exp.Type) != "service" {
return
}
if c, ok := exp.Service.Overrides[serviceName]; ok && c.Type != "" {
svc.Spec.Type = corev1.ServiceType(c.Type)
} else {
svc.Spec.Type = corev1.ServiceType(exp.Service.Type)
}
svc.Annotations = exp.GetAggregatedAnnotations(serviceName)
}
func (t *exposeLbTransformer) applyPortChanges(ctx context.Context, portName string, portDefault int32, overrideUrlName string, svc *corev1.Service) error {
if len(svc.Spec.Ports) > 0 {
overrideUrl, _ := t.svc.GetSpinnakerConfig().GetHalConfigPropString(ctx, overrideUrlName)
svc.Spec.Ports[0].Port = util.GetPort(overrideUrl, portDefault)
svc.Spec.Ports[0].Name = portName
if strings.Contains(portName, "gate") {
// ignore error, property may be missing
if targetPort, _ := t.svc.GetSpinnakerConfig().GetServiceConfigPropString(ctx, "gate", "server.port"); targetPort != "" {
intTargetPort, err := strconv.ParseInt(targetPort, 10, 32)
if err != nil {
return err
}
svc.Spec.Ports[0].TargetPort = intstr.IntOrString{IntVal: int32(intTargetPort)}
}
}
}
return nil
}