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/
kubernetes_helpers.go
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/
kubernetes_helpers.go
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// pmm-managed
// Copyright (C) 2017 Percona LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package models
import (
"github.com/google/uuid"
"github.com/pkg/errors"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"gopkg.in/reform.v1"
)
func checkUniqueKubernetesClusterID(q *reform.Querier, id string) error {
if id == "" {
return status.Error(codes.InvalidArgument, "empty Kubernetes Cluster ID")
}
cluster := &KubernetesCluster{ID: id}
switch err := q.Reload(cluster); err {
case nil:
return status.Errorf(codes.AlreadyExists, "Kubernetes Cluster with ID %q already exists.", id)
case reform.ErrNoRows:
return nil
default:
return errors.WithStack(err)
}
}
func checkUniqueKubernetesClusterName(q *reform.Querier, name string) error {
if name == "" {
return status.Error(codes.InvalidArgument, "empty Kubernetes Cluster Name.")
}
switch _, err := q.FindOneFrom(KubernetesClusterTable, "kubernetes_cluster_name", name); err {
case nil:
return status.Errorf(codes.AlreadyExists, "Kubernetes Cluster with Name %q already exists.", name)
case reform.ErrNoRows:
return nil
default:
return errors.WithStack(err)
}
}
// FindAllKubernetesClusters returns all Kubernetes clusters.
func FindAllKubernetesClusters(q *reform.Querier) ([]*KubernetesCluster, error) {
structs, err := q.SelectAllFrom(KubernetesClusterTable, "ORDER BY id")
if err != nil {
return nil, errors.WithStack(err)
}
clusters := make([]*KubernetesCluster, len(structs))
for i, s := range structs {
clusters[i] = s.(*KubernetesCluster)
}
return clusters, nil
}
// FindKubernetesClusterByName finds a Kubernetes cluster with provided name.
func FindKubernetesClusterByName(q *reform.Querier, name string) (*KubernetesCluster, error) {
if name == "" {
return nil, status.Error(codes.InvalidArgument, "Empty Kubernetes Cluster Name.")
}
switch cluster, err := q.FindOneFrom(KubernetesClusterTable, "kubernetes_cluster_name", name); err {
case nil:
return cluster.(*KubernetesCluster), nil
case reform.ErrNoRows:
return nil, status.Errorf(codes.NotFound, "Kubernetes Cluster with name %q not found.", name)
default:
return nil, errors.WithStack(err)
}
}
// CreateKubernetesClusterParams contains all params required to create Kubernetes cluster.
type CreateKubernetesClusterParams struct {
KubernetesClusterName string
KubeConfig string
}
// CreateKubernetesCluster creates Kubernetes cluster with provided params.
func CreateKubernetesCluster(q *reform.Querier, params *CreateKubernetesClusterParams) (*KubernetesCluster, error) {
id := "/kubernetes_cluster_id/" + uuid.New().String()
if err := checkUniqueKubernetesClusterID(q, id); err != nil {
return nil, err
}
if err := checkUniqueKubernetesClusterName(q, params.KubernetesClusterName); err != nil {
return nil, err
}
row := &KubernetesCluster{
ID: id,
KubernetesClusterName: params.KubernetesClusterName,
KubeConfig: params.KubeConfig,
}
if err := q.Insert(row); err != nil {
return nil, errors.WithStack(err)
}
return row, nil
}
// RemoveKubernetesCluster removes Kubernetes cluster with provided name.
func RemoveKubernetesCluster(q *reform.Querier, name string) error {
c, err := FindKubernetesClusterByName(q, name)
if err != nil {
return err
}
return errors.Wrap(q.Delete(c), "failed to delete Kubernetes Cluster")
}