/
helper.go
144 lines (122 loc) · 4.55 KB
/
helper.go
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package kibanaapi
import (
"context"
"crypto/tls"
"fmt"
"net"
"net/http"
"time"
"emperror.dev/errors"
"github.com/disaster37/go-kibana-rest/v8"
kbhandler "github.com/disaster37/kb-handler/v8"
"github.com/sirupsen/logrus"
"github.com/webcenter-fr/elasticsearch-operator/apis/shared"
"github.com/webcenter-fr/elasticsearch-operator/controllers/common"
elasticsearchcontrollers "github.com/webcenter-fr/elasticsearch-operator/controllers/elasticsearch"
kibanacontrollers "github.com/webcenter-fr/elasticsearch-operator/controllers/kibana"
core "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
)
func GetKibanaHandler(ctx context.Context, o client.Object, kbRef shared.KibanaRef, client client.Client, log *logrus.Entry) (kbHandler kbhandler.KibanaHandler, err error) {
// Retrieve secret or elasticsearch resource that store the connexion credentials
var (
secretNS types.NamespacedName
url string
isProvidedCredentials bool
)
selfSignedCertificate := false
// If secret credentials is provided, use it in first priority
if kbRef.KibanaCredentialSecretRef != nil {
isProvidedCredentials = true
secretNS = types.NamespacedName{
Namespace: o.GetNamespace(),
Name: kbRef.KibanaCredentialSecretRef.Name,
}
}
if kbRef.IsManaged() {
// Get Kibana
kb, err := common.GetKibanaFromRef(ctx, client, o, kbRef)
if err != nil {
return nil, errors.Wrap(err, "Error when get Kibana object from ref")
}
if kb == nil {
return nil, errors.Errorf("Kibana %s/%s not found", kbRef.ManagedKibanaRef.Namespace, kbRef.ManagedKibanaRef.Name)
}
// If no Kibana secret credential provided and Elasticsearch is also managed, we can use Elasticsearc credentials secret
if kbRef.KibanaCredentialSecretRef == nil {
if kb.Spec.ElasticsearchRef.IsManaged() {
es, err := common.GetElasticsearchFromRef(ctx, client, o, kb.Spec.ElasticsearchRef)
if err != nil {
return nil, errors.Wrap(err, "Error when get Elasticsearch object from ref")
}
if es == nil {
return nil, errors.Errorf("Elasticsearch %s/%s not found", kb.Spec.ElasticsearchRef.ManagedElasticsearchRef.Namespace, kb.Spec.ElasticsearchRef.ManagedElasticsearchRef.Name)
}
secretNS = types.NamespacedName{
Namespace: es.Namespace,
Name: elasticsearchcontrollers.GetSecretNameForCredentials(es),
}
isProvidedCredentials = false
} else {
return nil, errors.New("You must provide credential to access on Kibana API")
}
}
// Compute URL
if kb.Spec.Tls.IsTlsEnabled() {
url = fmt.Sprintf("https://%s.%s.svc:5601", kibanacontrollers.GetServiceName(kb), kb.Namespace)
selfSignedCertificate = true
} else {
url = fmt.Sprintf("http://%s.%s.svc:5601", kibanacontrollers.GetServiceName(kb), kb.Namespace)
}
} else if kbRef.IsExternal() {
url = kbRef.ExternalKibanaRef.Address
} else {
log.Error("You must set the way to connect on Kibana")
return nil, errors.New("You must set the way to connect on Kibana")
}
// Read secret to access on Kibana
secret := &core.Secret{}
if err = client.Get(ctx, secretNS, secret); err != nil {
if k8serrors.IsNotFound(err) {
log.Warnf("Secret %s/%s not yet exist, try later", secretNS.Namespace, secretNS.Name)
return nil, nil
}
log.Errorf("Error when get secret %s/%s: %s", secretNS.Namespace, secretNS.Name, err.Error())
return nil, err
}
transport := &http.Transport{
Proxy: http.ProxyFromEnvironment,
TLSClientConfig: &tls.Config{},
ResponseHeaderTimeout: 10 * time.Second,
DialContext: (&net.Dialer{Timeout: 10 * time.Second}).DialContext,
}
cfg := kibana.Config{
Address: url,
}
if !isProvidedCredentials {
cfg.Username = "elastic"
cfg.Password = string(secret.Data["elastic"])
} else {
if len(secret.Data["username"]) == 0 || len(secret.Data["password"]) == 0 {
return nil, errors.Errorf("The secret %s/%s must contain key `username` and `password`", secret.Namespace, secret.Name)
}
cfg.Username = string(secret.Data["username"])
cfg.Password = string(secret.Data["password"])
}
if selfSignedCertificate {
transport.TLSClientConfig.InsecureSkipVerify = true
}
// Create Elasticsearch handler/client
kbHandler, err = kbhandler.NewKibanaHandler(cfg, log)
if err != nil {
return nil, err
}
kbHandler.Client().Client.SetTransport(transport)
if log.Logger.GetLevel() == logrus.DebugLevel {
kbHandler.Client().Client.SetLogger(log)
kbHandler.Client().Client.SetDebug(true)
}
return kbHandler, nil
}