/
elasticsearch.go
180 lines (163 loc) · 5.05 KB
/
elasticsearch.go
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package jaeger
import (
"context"
"errors"
"fmt"
"sync"
"time"
esv1 "github.com/openshift/elasticsearch-operator/apis/logging/v1"
"go.opentelemetry.io/otel"
appsv1 "k8s.io/api/apps/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/util/wait"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
v1 "github.com/jaegertracing/jaeger-operator/apis/v1"
"github.com/jaegertracing/jaeger-operator/pkg/inventory"
"github.com/jaegertracing/jaeger-operator/pkg/tracing"
)
// ErrElasticsearchRemoved is returned when an ES cluster existed but has been removed
var ErrElasticsearchRemoved = errors.New("Elasticsearch cluster has been removed")
func (r *ReconcileJaeger) applyElasticsearches(ctx context.Context, jaeger v1.Jaeger, desired []esv1.Elasticsearch) error {
tracer := otel.GetTracerProvider().Tracer(v1.ReconciliationTracer)
ctx, span := tracer.Start(ctx, "applyElasticsearches")
defer span.End()
opts := []client.ListOption{
client.InNamespace(jaeger.Namespace),
client.MatchingLabels(map[string]string{
"app.kubernetes.io/instance": jaeger.Name,
"app.kubernetes.io/part-of": "jaeger",
}),
}
list := &esv1.ElasticsearchList{}
if err := r.rClient.List(ctx, list, opts...); err != nil {
return tracing.HandleError(err, span)
}
inv := inventory.ForElasticsearches(list.Items, desired)
for i := range inv.Create {
d := inv.Create[i]
jaeger.Logger().V(-1).Info(
"creating elasticsearch",
"elasticsearch", d.Name,
"namespace", d.Namespace,
)
if err := r.client.Create(ctx, &d); err != nil {
return tracing.HandleError(err, span)
}
if err := waitForAvailableElastic(ctx, r.client, d); err != nil {
return tracing.HandleError(fmt.Errorf("elasticsearch cluster didn't get to ready state: %w", err), span)
}
}
for i := range inv.Update {
d := inv.Update[i]
jaeger.Logger().V(-1).Info(
"updating elasticsearch",
"elasticsearch", d.Name,
"namespace", d.Namespace,
)
if err := r.client.Update(ctx, &d); err != nil {
return tracing.HandleError(err, span)
}
}
for i := range inv.Delete {
d := inv.Delete[i]
jaeger.Logger().V(-1).Info(
"deleting elasticsearch",
"elasticsearch", d.Name,
"namespace", d.Namespace,
)
if err := r.client.Delete(ctx, &d); err != nil {
return tracing.HandleError(err, span)
}
}
return nil
}
func waitForAvailableElastic(ctx context.Context, c client.Client, es esv1.Elasticsearch) error {
tracer := otel.GetTracerProvider().Tracer(v1.ReconciliationTracer)
ctx, span := tracer.Start(ctx, "waitForAvailableElastic")
defer span.End()
var expectedSize int32
for _, n := range es.Spec.Nodes {
expectedSize += n.NodeCount
}
seen := false
once := &sync.Once{}
return wait.PollUntilContextTimeout(
ctx,
time.Second,
2*time.Minute,
true,
wait.ConditionWithContextFunc(
func(context.Context) (done bool, err error) {
depList := appsv1.DeploymentList{}
labels := map[string]string{
"cluster-name": es.Name,
"component": "elasticsearch",
}
opts := []client.ListOption{
client.InNamespace(es.Namespace),
client.MatchingLabels(labels),
}
if err = c.List(ctx, &depList, opts...); err != nil {
if k8serrors.IsNotFound(err) {
if seen {
// we have seen this object before, but it doesn't exist anymore!
// we don't have anything else to do here, break the poll
log.Log.V(1).Info(
"Elasticsearch cluster has been removed.",
"namespace", es.Namespace,
"name", es.Name,
)
return true, ErrElasticsearchRemoved
}
// the object might have not been created yet
log.Log.V(-1).Info(
"Elasticsearch cluster doesn't exist yet.",
"namespace", es.Namespace,
"name", es.Name,
)
return false, nil
}
return false, tracing.HandleError(err, span)
}
seen = true
availableDep := int32(0)
for _, d := range depList.Items {
if d.Status.Replicas == d.Status.AvailableReplicas {
availableDep++
}
}
ssList := appsv1.StatefulSetList{}
if err = c.List(ctx, &ssList, opts...); err != nil {
if k8serrors.IsNotFound(err) {
// the object might have not been created yet
log.Log.V(-1).Info(
"Elasticsearch cluster doesn't exist yet.",
"namespace", es.Namespace,
"name", es.Name,
)
return false, nil
}
return false, tracing.HandleError(err, span)
}
ssAvailableRep := int32(0)
ssReplicas := int32(0)
for _, s := range ssList.Items {
ssReplicas += *s.Spec.Replicas
ssAvailableRep += s.Status.ReadyReplicas
}
once.Do(func() {
log.Log.V(-1).Info(
"Waiting for Elasticsearch to be available",
"namespace", es.Namespace,
"name", es.Name,
"desiredESNodes", expectedSize,
"desiredStatefulSetNodes", ssReplicas,
"availableStatefulSetNodes", ssAvailableRep,
"desiredDeploymentNodes", expectedSize-ssReplicas,
"availableDeploymentNodes", availableDep,
)
})
return availableDep+ssAvailableRep == expectedSize, nil
}))
}