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utils.go
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utils.go
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/*
Copyright 2018 Google LLC
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package v1alpha1
import (
"bytes"
"fmt"
resources "k8s.io/airflow-operator/pkg/controller/resources"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
policyv1 "k8s.io/api/policy/v1beta1"
rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/intstr"
"math/rand"
"strconv"
"time"
)
// constants defining field values
const (
ControllerVersion = "0.1"
PasswordCharSpace = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
LifecycleManaged = "managed"
LifecycleReferred = "referred"
ActionCheck = "check"
ActionCreate = "create"
ActionDelete = "delete"
LabelAirflowCR = "airflow-cr"
ValueAirflowCRBase = "airflow-base"
ValueAirflowCRCluster = "airflow-cluster"
LabelAirflowCRName = "airflow-cr-name"
LabelAirflowComponent = "airflow-component"
ValueAirflowComponentMySQL = "mysql"
ValueAirflowComponentSQLProxy = "sqlproxy"
ValueAirflowComponentSQL = "sql"
ValueAirflowComponentUI = "airflowui"
ValueAirflowComponentNFS = "nfs"
ValueAirflowComponentRedis = "redis"
ValueAirflowComponentScheduler = "scheduler"
ValueAirflowComponentWorker = "worker"
ValueAirflowComponentFlower = "flower"
LabelControllerVersion = "airflow-controller-version"
LabelApp = "app"
KindAirflowBase = "AirflowBase"
KindAirflowCluster = "AirflowCluster"
PodManagementPolicyParallel = "Parallel"
GitSyncDestDir = "gitdags"
GCSSyncDestDir = "dags"
afk = "AIRFLOW__KUBERNETES__"
afc = "AIRFLOW__CORE__"
AirflowHome = "/usr/local/airflow"
AirflowDagsBase = AirflowHome + "/dags/"
)
var (
random = rand.New(rand.NewSource(time.Now().UnixNano()))
)
// ResourceInfo is a container to capture the k8s resource info to be used by controller
type ResourceInfo struct {
// Lifecycle can be: managed, reference
Lifecycle string
// Obj refers to the resource object can be: sts, service, secret, pvc, ..
Obj resources.ResourceHandle
//Obj metav1.Object
// Action - hint on action to be taken as part of Reconcile
Action string
}
// ResourceSelector captures the k8s resource info and selector to fetch child resources
type ResourceSelector struct {
// Obj refers to the resource object can be: sts, service, secret, pvc, ..
Obj resources.ResourceHandle
// Selector - selector to pass to list
Selectors labels.Selector
}
// ComponentHandle is an interface for operating on Resource
type ComponentHandle interface {
ExpectedResources(rsrc interface{}) []ResourceInfo
ObserveSelectors(rsrc interface{}) []ResourceSelector
Differs(expected ResourceInfo, observed ResourceInfo) bool
UpdateStatus(rsrc interface{}, reconciled []ResourceInfo, err error)
}
// AirflowResource an interface for operating on AirflowResource
type AirflowResource interface {
getMeta(name string, labels map[string]string) metav1.ObjectMeta
getAnnotations() map[string]string
getAffinity() *corev1.Affinity
getNodeSelector() map[string]string
getName() string
getNameSpace() string
getLabels() map[string]string
getCRName() string
}
func optionsToString(options map[string]string, prefix string) string {
var buf bytes.Buffer
for k, v := range options {
buf.WriteString(fmt.Sprintf("%s%s %s ", prefix, k, v))
}
return buf.String()
}
// RandomAlphanumericString generates a random password of some fixed length.
func RandomAlphanumericString(strlen int) []byte {
result := make([]byte, strlen)
for i := range result {
result[i] = PasswordCharSpace[random.Intn(len(PasswordCharSpace))]
}
return result
}
func envFromSecret(name string, key string) *corev1.EnvVarSource {
return &corev1.EnvVarSource{
SecretKeyRef: &corev1.SecretKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: name,
},
Key: key,
},
}
}
// RsrcLabels return resource labels
func RsrcLabels(cr, name, component string) map[string]string {
return map[string]string{
LabelAirflowCR: cr,
LabelAirflowCRName: name,
LabelAirflowComponent: component,
}
}
func selectorLabels(r AirflowResource, component string) labels.Selector {
return labels.Set(RsrcLabels(r.getCRName(), r.getName(), component)).AsSelector()
}
func rsrcName(name string, component string, suffix string) string {
return name + "-" + component + suffix
}
func nameAndLabels(r AirflowResource, component string, suffix string, needlabels bool) (string, map[string]string, map[string]string) {
name := rsrcName(r.getName(), component, suffix)
if !needlabels {
return name, nil, nil
}
labels := r.getLabels()
matchlabels := make(map[string]string)
if labels == nil {
labels = make(map[string]string)
}
labels[LabelAirflowCR] = r.getCRName()
labels[LabelAirflowCRName] = r.getName()
labels[LabelApp] = name
labels[LabelAirflowComponent] = component
labels[LabelControllerVersion] = ControllerVersion
matchlabels[LabelAirflowCR] = r.getCRName()
matchlabels[LabelAirflowCRName] = r.getName()
matchlabels[LabelAirflowComponent] = component
matchlabels[LabelApp] = name
return name, labels, matchlabels
}
func (r *AirflowBase) getName() string { return r.Name }
func (r *AirflowBase) getNameSpace() string { return r.Namespace }
func (r *AirflowBase) getAnnotations() map[string]string { return r.Spec.Annotations }
func (r *AirflowBase) getAffinity() *corev1.Affinity { return r.Spec.Affinity }
func (r *AirflowBase) getNodeSelector() map[string]string { return r.Spec.NodeSelector }
func (r *AirflowBase) getLabels() map[string]string { return r.Spec.Labels }
func (r *AirflowBase) getCRName() string { return ValueAirflowCRBase }
func (r *AirflowBase) getMeta(name string, labels map[string]string) metav1.ObjectMeta {
return metav1.ObjectMeta{
Namespace: r.Namespace,
Annotations: r.Spec.Annotations,
Labels: labels,
Name: name,
OwnerReferences: []metav1.OwnerReference{
*metav1.NewControllerRef(r, schema.GroupVersionKind{
Group: SchemeGroupVersion.Group,
Version: SchemeGroupVersion.Version,
Kind: KindAirflowBase,
}),
},
}
}
func (r *AirflowCluster) getName() string { return r.Name }
func (r *AirflowCluster) getNameSpace() string { return r.Namespace }
func (r *AirflowCluster) getAnnotations() map[string]string { return r.Spec.Annotations }
func (r *AirflowCluster) getAffinity() *corev1.Affinity { return r.Spec.Affinity }
func (r *AirflowCluster) getNodeSelector() map[string]string { return r.Spec.NodeSelector }
func (r *AirflowCluster) getLabels() map[string]string { return r.Spec.Labels }
func (r *AirflowCluster) getCRName() string { return ValueAirflowCRCluster }
func (r *AirflowCluster) getMeta(name string, labels map[string]string) metav1.ObjectMeta {
return metav1.ObjectMeta{
Namespace: r.Namespace,
Annotations: r.Spec.Annotations,
Labels: labels,
Name: name,
OwnerReferences: []metav1.OwnerReference{
*metav1.NewControllerRef(r, schema.GroupVersionKind{
Group: SchemeGroupVersion.Group,
Version: SchemeGroupVersion.Version,
Kind: KindAirflowCluster,
}),
},
}
}
func (r *AirflowCluster) getAirflowPrometheusEnv() []corev1.EnvVar {
sqlSvcName := rsrcName(r.Spec.AirflowBaseRef.Name, ValueAirflowComponentSQL, "")
sqlSecret := rsrcName(r.Name, ValueAirflowComponentUI, "")
ap := "AIRFLOW_PROMETHEUS_"
apd := ap + "DATABASE_"
env := []corev1.EnvVar{
{Name: ap + "LISTEN_ADDR", Value: ":9112"},
{Name: apd + "BACKEND", Value: "mysql"},
{Name: apd + "HOST", Value: sqlSvcName},
{Name: apd + "PORT", Value: "3306"},
{Name: apd + "USER", Value: r.Spec.Scheduler.DBUser},
{Name: apd + "PASSWORD", ValueFrom: envFromSecret(sqlSecret, "password")},
{Name: apd + "NAME", Value: r.Spec.Scheduler.DBName},
}
return env
}
func (r *AirflowCluster) getAirflowEnv(saName string) []corev1.EnvVar {
sp := r.Spec
sqlSvcName := rsrcName(sp.AirflowBaseRef.Name, ValueAirflowComponentSQL, "")
sqlSecret := rsrcName(r.Name, ValueAirflowComponentUI, "")
redisSecret, _, _ := nameAndLabels(r, ValueAirflowComponentRedis, "", false)
redisSvcName := redisSecret
dagFolder := AirflowDagsBase
if sp.DAGs != nil {
if sp.DAGs.Git != nil {
dagFolder = AirflowDagsBase + "/" + GitSyncDestDir + "/" + sp.DAGs.DagSubdir
} else if sp.DAGs.GCS != nil {
dagFolder = AirflowDagsBase + "/" + GCSSyncDestDir + "/" + sp.DAGs.DagSubdir
}
}
env := []corev1.EnvVar{
{Name: "EXECUTOR", Value: sp.Executor},
{Name: "SQL_PASSWORD", ValueFrom: envFromSecret(sqlSecret, "password")},
{Name: afc + "DAGS_FOLDER", Value: dagFolder},
{Name: "SQL_HOST", Value: sqlSvcName},
{Name: "SQL_USER", Value: sp.Scheduler.DBUser},
{Name: "SQL_DB", Value: sp.Scheduler.DBName},
{Name: "DB_TYPE", Value: "mysql"},
}
if sp.Executor == ExecutorK8s {
env = append(env, []corev1.EnvVar{
{Name: afk + "WORKER_CONTAINER_REPOSITORY", Value: sp.Worker.Image},
{Name: afk + "WORKER_CONTAINER_TAG", Value: sp.Worker.Version},
{Name: afk + "WORKER_CONTAINER_IMAGE_PULL_POLICY", Value: "IfNotPresent"},
{Name: afk + "DELETE_WORKER_PODS", Value: "True"},
{Name: afk + "NAMESPACE", Value: r.Namespace},
//{Name: afk+"AIRFLOW_CONFIGMAP", Value: ??},
//{Name: afk+"IMAGE_PULL_SECRETS", Value: s.ImagePullSecrets},
//{Name: afk+"GCP_SERVICE_ACCOUNT_KEYS", Vaslue: ??},
}...)
if sp.DAGs != nil && sp.DAGs.Git != nil {
env = append(env, []corev1.EnvVar{
{Name: afk + "GIT_REPO", Value: sp.DAGs.Git.Repo},
{Name: afk + "GIT_BRANCH", Value: sp.DAGs.Git.Branch},
{Name: afk + "GIT_SUBPATH", Value: sp.DAGs.DagSubdir},
{Name: afk + "WORKER_SERVICE_ACCOUNT_NAME", Value: saName},
}...)
if sp.DAGs.Git.CredSecretRef != nil {
env = append(env, []corev1.EnvVar{
{Name: "GIT_PASSWORD",
ValueFrom: envFromSecret(sp.DAGs.Git.CredSecretRef.Name, "password")},
{Name: "GIT_USER", Value: sp.DAGs.Git.User},
}...)
}
}
}
if sp.Executor == ExecutorCelery {
env = append(env,
[]corev1.EnvVar{
{Name: "REDIS_PASSWORD",
ValueFrom: envFromSecret(redisSecret, "password")},
{Name: "REDIS_HOST", Value: redisSvcName},
}...)
}
return env
}
func (r *AirflowCluster) addAirflowContainers(ss *appsv1.StatefulSet, containers []corev1.Container, volName string) {
ss.Spec.Template.Spec.InitContainers = []corev1.Container{}
if r.Spec.DAGs != nil {
init, dagContainer := r.Spec.DAGs.container(volName)
if init {
ss.Spec.Template.Spec.InitContainers = []corev1.Container{dagContainer}
} else {
containers = append(containers, dagContainer)
}
}
ss.Spec.Template.Spec.Containers = containers
}
func (r *AirflowCluster) addMySQLUserDBContainer(ss *appsv1.StatefulSet) {
sqlRootSecret := rsrcName(r.Spec.AirflowBaseRef.Name, ValueAirflowComponentSQL, "")
sqlSvcName := rsrcName(r.Spec.AirflowBaseRef.Name, ValueAirflowComponentSQL, "")
sqlSecret := rsrcName(r.Name, ValueAirflowComponentUI, "")
env := []corev1.EnvVar{
{Name: "SQL_ROOT_PASSWORD", ValueFrom: envFromSecret(sqlRootSecret, "rootpassword")},
{Name: "SQL_DB", Value: r.Spec.Scheduler.DBName},
{Name: "SQL_USER", Value: r.Spec.Scheduler.DBUser},
{Name: "SQL_PASSWORD", ValueFrom: envFromSecret(sqlSecret, "password")},
{Name: "SQL_HOST", Value: sqlSvcName},
{Name: "DB_TYPE", Value: "mysql"},
}
containers := []corev1.Container{
{
Name: "mysql-dbcreate",
Image: defaultMySQLImage + ":" + defaultMySQLVersion,
Env: env,
Command: []string{"/bin/bash"},
//SET GLOBAL explicit_defaults_for_timestamp=ON;
Args: []string{"-c", `
mysql -uroot -h$(SQL_HOST) -p$(SQL_ROOT_PASSWORD) << EOSQL
CREATE DATABASE IF NOT EXISTS $(SQL_DB);
USE $(SQL_DB);
CREATE USER IF NOT EXISTS '$(SQL_USER)'@'%' IDENTIFIED BY '$(SQL_PASSWORD)';
GRANT ALL ON $(SQL_DB).* TO '$(SQL_USER)'@'%' ;
FLUSH PRIVILEGES;
EOSQL
`},
},
}
ss.Spec.Template.Spec.InitContainers = append(containers, ss.Spec.Template.Spec.InitContainers...)
}
// sts returns a StatefulSet object which specifies
// CPU and memory
// resources
// volume, volume mount
// pod spec
func sts(r AirflowResource, component string, suffix string, svc bool) *appsv1.StatefulSet {
name, labels, matchlabels := nameAndLabels(r, component, suffix, true)
svcName := ""
if svc {
svcName = name
}
return &appsv1.StatefulSet{
ObjectMeta: r.getMeta(name, labels),
Spec: appsv1.StatefulSetSpec{
ServiceName: svcName,
Selector: &metav1.LabelSelector{
MatchLabels: matchlabels,
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Annotations: r.getAnnotations(),
Labels: labels,
},
Spec: corev1.PodSpec{
Affinity: r.getAffinity(),
NodeSelector: r.getNodeSelector(),
Subdomain: name,
},
},
},
}
}
func service(r AirflowResource, component string, name string, ports []corev1.ServicePort) *resources.Service {
sname, labels, matchlabels := nameAndLabels(r, component, "", true)
if name == "" {
name = sname
}
return &resources.Service{
Service: &corev1.Service{
ObjectMeta: r.getMeta(name, labels),
Spec: corev1.ServiceSpec{
Ports: ports,
Selector: matchlabels,
},
},
}
}
func podDisruption(r AirflowResource, component string, suffix string, minavail string) *resources.PodDisruptionBudget {
name, label, selectors := nameAndLabels(r, component, suffix, true)
minAvailable := intstr.Parse(minavail)
return &resources.PodDisruptionBudget{
PodDisruptionBudget: &policyv1.PodDisruptionBudget{
ObjectMeta: r.getMeta(name, label),
Spec: policyv1.PodDisruptionBudgetSpec{
MinAvailable: &minAvailable,
Selector: &metav1.LabelSelector{
MatchLabels: selectors,
},
},
},
}
}
// ------------------------------ MYSQL ---------------------------------------
func (s *MySQLSpec) service(r *AirflowBase) *resources.Service {
return service(r, ValueAirflowComponentMySQL,
rsrcName(r.Name, ValueAirflowComponentSQL, ""),
[]corev1.ServicePort{{Name: "mysql", Port: 3306}})
}
func (s *MySQLSpec) podDisruption(r *AirflowBase) *resources.PodDisruptionBudget {
return podDisruption(r, ValueAirflowComponentMySQL, "", "100%")
}
func (s *MySQLSpec) secret(r *AirflowBase) *resources.Secret {
name, labels, _ := nameAndLabels(r, ValueAirflowComponentSQL, "", true)
return &resources.Secret{
Secret: &corev1.Secret{
ObjectMeta: r.getMeta(name, labels),
Data: map[string][]byte{
"password": RandomAlphanumericString(16),
"rootpassword": RandomAlphanumericString(16),
},
},
}
}
func (s *MySQLSpec) sts(r *AirflowBase) *resources.StatefulSet {
sqlSecret, _, _ := nameAndLabels(r, ValueAirflowComponentSQL, "", false)
ss := sts(r, ValueAirflowComponentMySQL, "", true)
ss.Spec.Replicas = &s.Replicas
volName := "mysql-data"
if s.VolumeClaimTemplate != nil {
ss.Spec.VolumeClaimTemplates = []corev1.PersistentVolumeClaim{*s.VolumeClaimTemplate}
volName = s.VolumeClaimTemplate.Name
} else {
ss.Spec.Template.Spec.Volumes = []corev1.Volume{
{Name: volName, VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
}
}
ss.Spec.Template.Spec.Containers = []corev1.Container{
{
Name: "mysql",
Image: s.Image + ":" + s.Version,
Env: []corev1.EnvVar{
{Name: "MYSQL_DATABASE", Value: "testdb"},
{Name: "MYSQL_USER", Value: "airflow"},
{Name: "MYSQL_PASSWORD", ValueFrom: envFromSecret(sqlSecret, "password")},
{Name: "MYSQL_ROOT_PASSWORD", ValueFrom: envFromSecret(sqlSecret, "rootpassword")},
},
//Args: []string{"-c", fmt.Sprintf("exec mysql %s", optionsToString(s.Options, "--"))},
Args: []string{"--explicit-defaults-for-timestamp=ON"},
Resources: s.Resources,
Ports: []corev1.ContainerPort{
{
Name: "mysql",
ContainerPort: 3306,
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: volName,
MountPath: "/var/lib/mysql",
},
},
LivenessProbe: &corev1.Probe{
Handler: corev1.Handler{
Exec: &corev1.ExecAction{
Command: []string{"bash", "-c", "mysqladmin -p$MYSQL_ROOT_PASSWORD ping"},
},
},
InitialDelaySeconds: 30,
PeriodSeconds: 20,
TimeoutSeconds: 5,
},
ReadinessProbe: &corev1.Probe{
Handler: corev1.Handler{
Exec: &corev1.ExecAction{
Command: []string{"bash", "-c", "mysql -u$MYSQL_USER -p$MYSQL_PASSWORD -e \"use testdb\""},
},
},
InitialDelaySeconds: 10,
PeriodSeconds: 5,
TimeoutSeconds: 2,
},
},
}
return &resources.StatefulSet{StatefulSet: ss}
}
// ExpectedResources returns the list of resource/name for those resources created by
// the operator for this spec and those resources referenced by this operator.
// Mark resources as owned, referred
func (s *MySQLSpec) ExpectedResources(rsrc interface{}) []ResourceInfo {
r := rsrc.(*AirflowBase)
if s.Operator {
return nil
}
rsrcInfos := []ResourceInfo{
ResourceInfo{LifecycleManaged, s.secret(r), ""},
ResourceInfo{LifecycleManaged, s.service(r), ""},
ResourceInfo{LifecycleManaged, s.sts(r), ""},
ResourceInfo{LifecycleManaged, s.podDisruption(r), ""},
}
//if s.VolumeClaimTemplate != nil {
// rsrcInfos = append(rsrcInfos, ResourceInfo{LifecycleReferred, s.VolumeClaimTemplate, ""})
//}
return rsrcInfos
}
// ObserveSelectors returns the list of resource/selecitos for those resources created by
// the operator for this spec and those resources referenced by this operator.
func (s *MySQLSpec) ObserveSelectors(rsrc interface{}) []ResourceSelector {
r := rsrc.(*AirflowBase)
if s.Operator {
return nil
}
selector := selectorLabels(r, ValueAirflowComponentMySQL)
secretSelector := selectorLabels(r, ValueAirflowComponentSQL)
rsrcSelectos := []ResourceSelector{
{&resources.StatefulSet{}, selector},
{&resources.Service{}, selector},
{&resources.Secret{}, secretSelector},
{&resources.PodDisruptionBudget{}, selector},
}
//if s.VolumeClaimTemplate != nil {
// rsrcSelectos = append(rsrcSelectos, ResourceSelector{s.VolumeClaimTemplate, nil})
//}
return rsrcSelectos
}
// Differs returns true if the resource needs to be updated
func (s *MySQLSpec) Differs(expected ResourceInfo, observed ResourceInfo) bool {
switch expected.Obj.(type) {
case *resources.Secret:
// Dont update a secret
return false
case *resources.Service:
expected.Obj.SetResourceVersion(observed.Obj.GetResourceVersion())
expected.Obj.(*resources.Service).Spec.ClusterIP = observed.Obj.(*resources.Service).Spec.ClusterIP
case *resources.PodDisruptionBudget:
expected.Obj.SetResourceVersion(observed.Obj.GetResourceVersion())
}
return true
}
// UpdateStatus use reconciled objects to update component status
func (s *MySQLSpec) UpdateStatus(rsrc interface{}, reconciled []ResourceInfo, err error) {
status := rsrc.(*AirflowBaseStatus)
status.MySQL = ComponentStatus{}
if s != nil {
status.MySQL.update(reconciled, err)
if status.MySQL.Status != StatusReady {
status.Status = StatusInProgress
}
}
}
// ------------------------------ Airflow UI ---------------------------------------
func (s *AirflowUISpec) secret(r *AirflowCluster) *resources.Secret {
name, labels, _ := nameAndLabels(r, ValueAirflowComponentUI, "", true)
return &resources.Secret{
Secret: &corev1.Secret{
ObjectMeta: r.getMeta(name, labels),
Data: map[string][]byte{
"password": RandomAlphanumericString(16),
},
},
}
}
// ExpectedResources returns the list of resource/name for those resources created by
func (s *AirflowUISpec) ExpectedResources(rsrc interface{}) []ResourceInfo {
r := rsrc.(*AirflowCluster)
return []ResourceInfo{
ResourceInfo{LifecycleManaged, s.sts(r), ""},
ResourceInfo{LifecycleManaged, s.secret(r), ""},
}
}
// ObserveSelectors returns the list of resource/selecitos for resources created
func (s *AirflowUISpec) ObserveSelectors(rsrc interface{}) []ResourceSelector {
r := rsrc.(*AirflowCluster)
selector := selectorLabels(r, ValueAirflowComponentUI)
return []ResourceSelector{
{&resources.StatefulSet{}, selector},
{&resources.Secret{}, selector},
}
}
// Differs returns true if the resource needs to be updated
func (s *AirflowUISpec) Differs(expected ResourceInfo, observed ResourceInfo) bool {
// TODO
switch expected.Obj.(type) {
case *resources.Secret:
// Dont update a secret
return false
}
return true
}
// UpdateStatus use reconciled objects to update component status
func (s *AirflowUISpec) UpdateStatus(rsrc interface{}, reconciled []ResourceInfo, err error) {
status := rsrc.(*AirflowClusterStatus)
status.UI = ComponentStatus{}
if s != nil {
status.UI.update(reconciled, err)
if status.UI.Status != StatusReady {
status.Status = StatusInProgress
}
}
}
func (s *AirflowUISpec) sts(r *AirflowCluster) *resources.StatefulSet {
volName := "dags-data"
ss := sts(r, ValueAirflowComponentUI, "", false)
ss.Spec.Replicas = &s.Replicas
ss.Spec.PodManagementPolicy = PodManagementPolicyParallel
ss.Spec.Template.Spec.Volumes = []corev1.Volume{
{Name: volName, VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
}
args := []string{"webserver"}
env := r.getAirflowEnv(ss.Name)
containers := []corev1.Container{
{
//imagePullPolicy: "Always"
//envFrom:
Name: "airflow-ui",
Image: s.Image + ":" + s.Version,
Env: env,
ImagePullPolicy: corev1.PullAlways,
Args: args,
Resources: s.Resources,
Ports: []corev1.ContainerPort{
{
Name: "web",
ContainerPort: 8080,
//Protocol: "TCP",
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: volName,
MountPath: "/usr/local/airflow/dags/",
},
},
LivenessProbe: &corev1.Probe{
Handler: corev1.Handler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/health",
Port: intstr.FromString("web"),
},
},
InitialDelaySeconds: 100,
PeriodSeconds: 60,
TimeoutSeconds: 2,
SuccessThreshold: 1,
FailureThreshold: 5,
},
},
}
r.addAirflowContainers(ss, containers, volName)
r.addMySQLUserDBContainer(ss)
return &resources.StatefulSet{StatefulSet: ss}
}
// ------------------------------ NFSStoreSpec ---------------------------------------
// ExpectedResources returns the list of resource/name for those resources created by
func (s *NFSStoreSpec) ExpectedResources(rsrc interface{}) []ResourceInfo {
r := rsrc.(*AirflowBase)
return []ResourceInfo{
ResourceInfo{LifecycleManaged, s.sts(r), ""},
ResourceInfo{LifecycleManaged, s.service(r), ""},
ResourceInfo{LifecycleManaged, s.podDisruption(r), ""},
}
}
// ObserveSelectors returns the list of resource/selecitos for resources created
func (s *NFSStoreSpec) ObserveSelectors(rsrc interface{}) []ResourceSelector {
r := rsrc.(*AirflowBase)
selector := selectorLabels(r, ValueAirflowComponentNFS)
return []ResourceSelector{
{&resources.StatefulSet{}, selector},
{&resources.Service{}, selector},
{&resources.PodDisruptionBudget{}, selector},
}
}
func (s *NFSStoreSpec) sts(r *AirflowBase) *resources.StatefulSet {
ss := sts(r, ValueAirflowComponentNFS, "", true)
ss.Spec.PodManagementPolicy = PodManagementPolicyParallel
volName := "nfs-data"
if s.Volume != nil {
ss.Spec.VolumeClaimTemplates = []corev1.PersistentVolumeClaim{*s.Volume}
volName = s.Volume.Name
} else {
ss.Spec.Template.Spec.Volumes = []corev1.Volume{
{Name: volName, VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
}
}
ss.Spec.Template.Spec.Containers = []corev1.Container{
{
//imagePullPolicy: "Always"
//envFrom:
Name: "nfs-server",
Image: s.Image + ":" + s.Version,
Resources: s.Resources,
Ports: []corev1.ContainerPort{
{Name: "nfs", ContainerPort: 2049},
{Name: "mountd", ContainerPort: 20048},
{Name: "rpcbind", ContainerPort: 111},
},
SecurityContext: &corev1.SecurityContext{},
VolumeMounts: []corev1.VolumeMount{
{
Name: volName,
MountPath: "/exports",
},
},
},
}
return &resources.StatefulSet{StatefulSet: ss}
}
func (s *NFSStoreSpec) podDisruption(r *AirflowBase) *resources.PodDisruptionBudget {
return podDisruption(r, ValueAirflowComponentNFS, "", "100%")
}
func (s *NFSStoreSpec) service(r *AirflowBase) *resources.Service {
return service(r, ValueAirflowComponentNFS, "",
[]corev1.ServicePort{
{Name: "nfs", Port: 2049},
{Name: "mountd", Port: 20048},
{Name: "rpcbind", Port: 111},
})
}
// Differs returns true if the resource needs to be updated
func (s *NFSStoreSpec) Differs(expected ResourceInfo, observed ResourceInfo) bool {
// TODO
switch expected.Obj.(type) {
case *resources.Service:
expected.Obj.SetResourceVersion(observed.Obj.GetResourceVersion())
expected.Obj.(*resources.Service).Spec.ClusterIP = observed.Obj.(*resources.Service).Spec.ClusterIP
case *resources.PodDisruptionBudget:
expected.Obj.SetResourceVersion(observed.Obj.GetResourceVersion())
}
return true
}
// UpdateStatus use reconciled objects to update component status
func (s *NFSStoreSpec) UpdateStatus(rsrc interface{}, reconciled []ResourceInfo, err error) {
status := rsrc.(*AirflowBaseStatus)
status.Storage = ComponentStatus{}
if s != nil {
status.Storage.update(reconciled, err)
if status.Storage.Status != StatusReady {
status.Status = StatusInProgress
}
}
}
// ------------------------------ SQLProxy ---------------------------------------
func (s *SQLProxySpec) service(r *AirflowBase) *resources.Service {
return service(r, ValueAirflowComponentSQLProxy,
rsrcName(r.Name, ValueAirflowComponentSQL, ""),
[]corev1.ServicePort{{Name: "sqlproxy", Port: 3306}})
}
func (s *SQLProxySpec) sts(r *AirflowBase) *resources.StatefulSet {
ss := sts(r, ValueAirflowComponentSQLProxy, "", true)
instance := s.Project + ":" + s.Region + ":" + s.Instance + "=tcp:0.0.0.0:3306"
ss.Spec.Template.Spec.Containers = []corev1.Container{
{
Name: "sqlproxy",
Image: s.Image + ":" + s.Version,
Env: []corev1.EnvVar{
{Name: "SQL_INSTANCE", Value: instance},
},
Command: []string{"/cloud_sql_proxy", "-instances", "$(SQL_INSTANCE)"},
//volumeMounts:
//- name: ssl-certs
//mountPath: /etc/ssl/certs
Resources: s.Resources,
Ports: []corev1.ContainerPort{
{
Name: "sqlproxy",
ContainerPort: 3306,
},
},
},
}
return &resources.StatefulSet{StatefulSet: ss}
}
// ExpectedResources returns the list of resource/name for those resources created by
// the operator for this spec and those resources referenced by this operator.
// Mark resources as owned, referred
func (s *SQLProxySpec) ExpectedResources(rsrc interface{}) []ResourceInfo {
r := rsrc.(*AirflowBase)
name, _, _ := nameAndLabels(r, ValueAirflowComponentSQL, "", false)
return []ResourceInfo{
ResourceInfo{LifecycleManaged, s.service(r), ""},
ResourceInfo{LifecycleManaged, s.sts(r), ""},
ResourceInfo{LifecycleReferred,
&resources.Secret{
Secret: &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Namespace: r.Namespace,
Name: name,
}}},
""},
}
}
// ObserveSelectors returns the list of resource/selecitos for those resources created by
// the operator for this spec and those resources referenced by this operator.
func (s *SQLProxySpec) ObserveSelectors(rsrc interface{}) []ResourceSelector {
r := rsrc.(*AirflowBase)
selector := selectorLabels(r, ValueAirflowComponentSQLProxy)
svcselector := selectorLabels(r, ValueAirflowComponentSQLProxy)
name, _, _ := nameAndLabels(r, ValueAirflowComponentSQL, "", false)
return []ResourceSelector{
{&resources.StatefulSet{}, selector},
{&resources.Service{}, svcselector},
{&resources.Secret{
Secret: &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Namespace: r.Namespace,
Name: name,
}}},
nil},
}
}
// Differs returns true if the resource needs to be updated
func (s *SQLProxySpec) Differs(expected ResourceInfo, observed ResourceInfo) bool {
switch expected.Obj.(type) {
case *resources.Service:
expected.Obj.SetResourceVersion(observed.Obj.GetResourceVersion())
expected.Obj.(*resources.Service).Spec.ClusterIP = observed.Obj.(*resources.Service).Spec.ClusterIP
}
return true
}
// UpdateStatus use reconciled objects to update component status
func (s *SQLProxySpec) UpdateStatus(rsrc interface{}, reconciled []ResourceInfo, err error) {
status := rsrc.(*AirflowBaseStatus)
status.SQLProxy = ComponentStatus{}
if s != nil {
status.SQLProxy.update(reconciled, err)
if status.SQLProxy.Status != StatusReady {
status.Status = StatusInProgress
}
}
}
// ------------------------------ RedisSpec ---------------------------------------
func (s *RedisSpec) service(r *AirflowCluster) *resources.Service {
return service(r, ValueAirflowComponentRedis, "",
[]corev1.ServicePort{{Name: "redis", Port: 6379}})
}
func (s *RedisSpec) podDisruption(r *AirflowCluster) *resources.PodDisruptionBudget {
return podDisruption(r, ValueAirflowComponentRedis, "", "100%")
}
func (s *RedisSpec) secret(r *AirflowCluster) *resources.Secret {
name, labels, _ := nameAndLabels(r, ValueAirflowComponentRedis, "", true)
return &resources.Secret{
Secret: &corev1.Secret{
ObjectMeta: r.getMeta(name, labels),
Data: map[string][]byte{
"password": RandomAlphanumericString(16),
},
},
}
}
func (s *RedisSpec) sts(r *AirflowCluster) *resources.StatefulSet {
redisSecret, _, _ := nameAndLabels(r, ValueAirflowComponentRedis, "", false)
ss := sts(r, ValueAirflowComponentRedis, "", true)
volName := "redis-data"
if s.VolumeClaimTemplate != nil {
ss.Spec.VolumeClaimTemplates = []corev1.PersistentVolumeClaim{*s.VolumeClaimTemplate}
volName = s.VolumeClaimTemplate.Name
} else {
ss.Spec.Template.Spec.Volumes = []corev1.Volume{
{Name: volName, VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}},
}
}
args := []string{"--requirepass", "$(REDIS_PASSWORD)"}
if s.AdditionalArgs != "" {
args = append(args, "$(REDIS_EXTRA_FLAGS)")
}
ss.Spec.Template.Spec.Containers = []corev1.Container{
{
Name: "redis",
Image: s.Image + ":" + s.Version,
Env: []corev1.EnvVar{
{Name: "REDIS_EXTRA_FLAGS", Value: s.AdditionalArgs},
{Name: "REDIS_PASSWORD", ValueFrom: envFromSecret(redisSecret, "password")},
},
Args: args,
Resources: s.Resources,
Ports: []corev1.ContainerPort{
{
Name: "redis",
ContainerPort: 6379,
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: volName,
MountPath: "/data",
},
},
LivenessProbe: &corev1.Probe{
Handler: corev1.Handler{
Exec: &corev1.ExecAction{
Command: []string{"redis-cli", "ping"},
},
},
InitialDelaySeconds: 30,
PeriodSeconds: 20,
TimeoutSeconds: 5,
},
ReadinessProbe: &corev1.Probe{
Handler: corev1.Handler{
Exec: &corev1.ExecAction{
Command: []string{"redis-cli", "ping"},
},
},
InitialDelaySeconds: 10,
PeriodSeconds: 5,
TimeoutSeconds: 2,
},
},
}
return &resources.StatefulSet{StatefulSet: ss}
}
// ExpectedResources returns the list of resource/name for those resources created by
// the operator for this spec and those resources referenced by this operator.
// Mark resources as owned, referred
func (s *RedisSpec) ExpectedResources(rsrc interface{}) []ResourceInfo {
r := rsrc.(*AirflowCluster)
rsrcInfos := []ResourceInfo{
ResourceInfo{LifecycleManaged, s.secret(r), ""},
ResourceInfo{LifecycleManaged, s.service(r), ""},
ResourceInfo{LifecycleManaged, s.sts(r), ""},
ResourceInfo{LifecycleManaged, s.podDisruption(r), ""},
}
//if s.VolumeClaimTemplate != nil {
// rsrcInfos = append(rsrcInfos, ResourceInfo{LifecycleReferred, s.VolumeClaimTemplate, ""})
// }
return rsrcInfos
}
// ObserveSelectors returns the list of resource/selecitos for those resources created by