/
microservice.go
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/
microservice.go
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package components
import (
"context"
ytv1 "github.com/ytsaurus/yt-k8s-operator/api/v1"
ptr "k8s.io/utils/pointer"
"github.com/ytsaurus/yt-k8s-operator/pkg/apiproxy"
"github.com/ytsaurus/yt-k8s-operator/pkg/labeller"
"github.com/ytsaurus/yt-k8s-operator/pkg/resources"
"github.com/ytsaurus/yt-k8s-operator/pkg/ytconfig"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
)
// microservice manages common resources of YTsaurus service component
// that typically is not directly presented in Cypress
// and doesn't use native connection to communicate with the cluster.
// Examples are YT UI and CHYT controller.
type microservice interface {
resources.Fetchable
resources.Syncable
podsManager
needSync() bool
needUpdate() bool
getImage() string
getHttpService() *resources.HTTPService
buildDeployment() *appsv1.Deployment
buildService() *corev1.Service
buildConfig() *corev1.ConfigMap
}
type microserviceImpl struct {
image string
labeller *labeller.Labeller
instanceCount int32
ytsaurus *apiproxy.Ytsaurus
deployment *resources.Deployment
service *resources.HTTPService
configHelper *ConfigHelper
builtDeployment *appsv1.Deployment
builtService *corev1.Service
builtConfig *corev1.ConfigMap
}
func newMicroservice(
labeller *labeller.Labeller,
ytsaurus *apiproxy.Ytsaurus,
image string,
instanceCount int32,
generators map[string]ytconfig.GeneratorDescriptor,
deploymentName, serviceName string) microservice {
return µserviceImpl{
labeller: labeller,
image: image,
instanceCount: instanceCount,
ytsaurus: ytsaurus,
service: resources.NewHTTPService(
serviceName,
nil,
labeller,
ytsaurus.APIProxy()),
deployment: resources.NewDeployment(
deploymentName,
labeller,
ytsaurus),
configHelper: NewConfigHelper(
labeller,
ytsaurus.APIProxy(),
labeller.GetMainConfigMapName(),
ytsaurus.GetResource().Spec.ConfigOverrides,
generators),
}
}
func (m *microserviceImpl) Sync(ctx context.Context) (err error) {
_ = m.buildConfig()
_ = m.buildDeployment()
_ = m.buildService()
return resources.Sync(ctx,
m.deployment,
m.configHelper,
m.service,
)
}
func (m *microserviceImpl) Fetch(ctx context.Context) error {
return resources.Fetch(ctx,
m.configHelper,
m.deployment,
m.service,
)
}
func (m *microserviceImpl) needSync() bool {
needReload, err := m.configHelper.NeedReload()
if err != nil {
needReload = false
}
return m.configHelper.NeedInit() ||
(m.ytsaurus.GetClusterState() == ytv1.ClusterStateUpdating && needReload) ||
!resources.Exists(m.service) ||
m.deployment.NeedSync(m.instanceCount)
}
func (m *microserviceImpl) buildDeployment() *appsv1.Deployment {
if m.builtDeployment != nil {
return m.builtDeployment
}
return m.rebuildDeployment()
}
func (m *microserviceImpl) getHttpService() *resources.HTTPService {
return m.service
}
func (m *microserviceImpl) rebuildDeployment() *appsv1.Deployment {
m.builtDeployment = m.deployment.Build()
m.builtDeployment.Spec.Replicas = &m.instanceCount
m.builtDeployment.Spec.Template.Spec.Containers = []corev1.Container{
{
Image: m.image,
},
}
return m.builtDeployment
}
func (m *microserviceImpl) buildService() *corev1.Service {
if m.builtService == nil {
m.builtService = m.service.Build()
}
return m.builtService
}
func (m *microserviceImpl) buildConfig() *corev1.ConfigMap {
if m.builtConfig == nil {
m.builtConfig = m.configHelper.Build()
}
return m.builtConfig
}
func (m *microserviceImpl) arePodsReady(ctx context.Context) bool {
return m.deployment.ArePodsReady(ctx)
}
func (m *microserviceImpl) arePodsRemoved(ctx context.Context) bool {
if !resources.Exists(m.deployment) {
return true
}
return m.deployment.ArePodsRemoved(ctx)
}
func (m *microserviceImpl) needUpdate() bool {
if !m.exists() {
return false
}
if !m.podsImageCorrespondsToSpec() {
return true
}
needReload, err := m.configHelper.NeedReload()
if err != nil {
return false
}
return needReload
}
func (m *microserviceImpl) exists() bool {
return resources.Exists(m.deployment) &&
resources.Exists(m.service)
}
func (m *microserviceImpl) podsImageCorrespondsToSpec() bool {
return m.deployment.OldObject().(*appsv1.Deployment).Spec.Template.Spec.Containers[0].Image == m.image
}
func (m *microserviceImpl) removePods(ctx context.Context) error {
m.builtDeployment = m.deployment.Build()
m.builtDeployment.Spec = m.deployment.OldObject().(*appsv1.Deployment).Spec
m.builtDeployment.Spec.Replicas = ptr.Int32(0)
return m.Sync(ctx)
}
func (m *microserviceImpl) getImage() string {
return m.image
}