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node.go
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node.go
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/*
Copyright 2020 The Kubermatic Kubernetes Platform contributors.
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 externalcluster
import (
"context"
"fmt"
"net/http"
"strings"
"github.com/go-kit/kit/endpoint"
"github.com/gorilla/mux"
apiv1 "k8c.io/kubermatic/v2/pkg/api/v1"
handlercommon "k8c.io/kubermatic/v2/pkg/handler/common"
"k8c.io/kubermatic/v2/pkg/handler/v1/common"
"k8c.io/kubermatic/v2/pkg/provider"
"k8c.io/kubermatic/v2/pkg/util/errors"
corev1 "k8s.io/api/core/v1"
"k8s.io/metrics/pkg/apis/metrics/v1beta1"
)
const errGlue = " & "
func ListNodesEndpoint(userInfoGetter provider.UserInfoGetter, projectProvider provider.ProjectProvider, privilegedProjectProvider provider.PrivilegedProjectProvider, clusterProvider provider.ExternalClusterProvider, privilegedClusterProvider provider.PrivilegedExternalClusterProvider, settingsProvider provider.SettingsProvider) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
req := request.(listNodesReq)
if err := req.Validate(); err != nil {
return nil, errors.NewBadRequest(err.Error())
}
project, err := common.GetProject(ctx, userInfoGetter, projectProvider, privilegedProjectProvider, req.ProjectID, &provider.ProjectGetOptions{IncludeUninitialized: false})
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
cluster, err := getCluster(ctx, userInfoGetter, clusterProvider, privilegedClusterProvider, project.Name, req.ClusterID)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
var nodesV1 []*apiv1.Node
nodes, err := clusterProvider.ListNodes(cluster)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
for _, n := range nodes.Items {
outNode, err := outputNode(n)
if err != nil {
return nil, fmt.Errorf("failed to output node %s: %v", n.Name, err)
}
nodesV1 = append(nodesV1, outNode)
}
return nodesV1, nil
}
}
func ListNodesMetricsEndpoint(userInfoGetter provider.UserInfoGetter, projectProvider provider.ProjectProvider, privilegedProjectProvider provider.PrivilegedProjectProvider, clusterProvider provider.ExternalClusterProvider, privilegedClusterProvider provider.PrivilegedExternalClusterProvider, settingsProvider provider.SettingsProvider) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
if !AreExternalClustersEnabled(settingsProvider) {
return nil, errors.New(http.StatusForbidden, "external cluster functionality is disabled")
}
req := request.(listNodesReq)
if err := req.Validate(); err != nil {
return nil, errors.NewBadRequest(err.Error())
}
nodeMetrics := make([]apiv1.NodeMetric, 0)
project, err := common.GetProject(ctx, userInfoGetter, projectProvider, privilegedProjectProvider, req.ProjectID, &provider.ProjectGetOptions{IncludeUninitialized: false})
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
cluster, err := getCluster(ctx, userInfoGetter, clusterProvider, privilegedClusterProvider, project.Name, req.ClusterID)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
isMetricServer, err := clusterProvider.IsMetricServerAvailable(cluster)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
if isMetricServer {
client, err := clusterProvider.GetClient(cluster)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
nodes := &corev1.NodeList{}
if err := client.List(ctx, nodes); err != nil {
return nil, err
}
availableResources := make(map[string]corev1.ResourceList)
for _, n := range nodes.Items {
availableResources[n.Name] = n.Status.Allocatable
}
nodeDeploymentNodesMetrics := make([]v1beta1.NodeMetrics, 0)
allNodeMetricsList := &v1beta1.NodeMetricsList{}
if err := client.List(ctx, allNodeMetricsList); err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
for _, m := range allNodeMetricsList.Items {
if _, ok := availableResources[m.Name]; ok {
nodeDeploymentNodesMetrics = append(nodeDeploymentNodesMetrics, m)
}
}
return handlercommon.ConvertNodeMetrics(nodeDeploymentNodesMetrics, availableResources)
}
return nodeMetrics, nil
}
}
// listNodesReq defines HTTP request for listExternalClusterNodes
// swagger:parameters listExternalClusterNodes listExternalClusterNodesMetrics
type listNodesReq struct {
common.ProjectReq
// in: path
// required: true
ClusterID string `json:"cluster_id"`
}
func DecodeListNodesReq(c context.Context, r *http.Request) (interface{}, error) {
var req listNodesReq
pr, err := common.DecodeProjectRequest(c, r)
if err != nil {
return nil, err
}
req.ProjectReq = pr.(common.ProjectReq)
clusterID, err := common.DecodeClusterID(c, r)
if err != nil {
return nil, err
}
req.ClusterID = clusterID
return req, nil
}
// Validate validates CreateEndpoint request
func (req listNodesReq) Validate() error {
if len(req.ProjectID) == 0 {
return fmt.Errorf("the project ID cannot be empty")
}
if len(req.ClusterID) == 0 {
return fmt.Errorf("the cluster ID cannot be empty")
}
return nil
}
func GetNodeEndpoint(userInfoGetter provider.UserInfoGetter, projectProvider provider.ProjectProvider, privilegedProjectProvider provider.PrivilegedProjectProvider, clusterProvider provider.ExternalClusterProvider, privilegedClusterProvider provider.PrivilegedExternalClusterProvider, settingsProvider provider.SettingsProvider) endpoint.Endpoint {
return func(ctx context.Context, request interface{}) (interface{}, error) {
req := request.(getNodeReq)
if err := req.Validate(); err != nil {
return nil, errors.NewBadRequest(err.Error())
}
project, err := common.GetProject(ctx, userInfoGetter, projectProvider, privilegedProjectProvider, req.ProjectID, &provider.ProjectGetOptions{IncludeUninitialized: false})
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
cluster, err := getCluster(ctx, userInfoGetter, clusterProvider, privilegedClusterProvider, project.Name, req.ClusterID)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
node, err := clusterProvider.GetNode(cluster, req.NodeID)
if err != nil {
return nil, common.KubernetesErrorToHTTPError(err)
}
return outputNode(*node)
}
}
// getNodeReq defines HTTP request for getExternalClusterNode
// swagger:parameters getExternalClusterNode
type getNodeReq struct {
common.ProjectReq
// in: path
// required: true
ClusterID string `json:"cluster_id"`
// in: path
// required: true
NodeID string `json:"node_id"`
}
func DecodeGetNodeReq(c context.Context, r *http.Request) (interface{}, error) {
var req getNodeReq
pr, err := common.DecodeProjectRequest(c, r)
if err != nil {
return nil, err
}
req.ProjectReq = pr.(common.ProjectReq)
clusterID, err := common.DecodeClusterID(c, r)
if err != nil {
return nil, err
}
req.ClusterID = clusterID
req.NodeID = mux.Vars(r)["node_id"]
return req, nil
}
// Validate validates CreateEndpoint request
func (req getNodeReq) Validate() error {
if len(req.ProjectID) == 0 {
return fmt.Errorf("the project ID cannot be empty")
}
if len(req.ClusterID) == 0 {
return fmt.Errorf("the cluster ID cannot be empty")
}
if len(req.NodeID) == 0 {
return fmt.Errorf("the node ID cannot be empty")
}
return nil
}
func outputNode(node corev1.Node) (*apiv1.Node, error) {
displayName := node.Name
nodeStatus := apiv1.NodeStatus{}
nodeStatus = apiNodeStatus(nodeStatus, node)
nodeStatus.ErrorReason = strings.TrimSuffix(nodeStatus.ErrorReason, errGlue)
nodeStatus.ErrorMessage = strings.TrimSuffix(nodeStatus.ErrorMessage, errGlue)
return &apiv1.Node{
ObjectMeta: apiv1.ObjectMeta{
ID: node.Name,
Name: displayName,
CreationTimestamp: apiv1.NewTime(node.CreationTimestamp.Time),
},
Spec: apiv1.NodeSpec{
Versions: apiv1.NodeVersionInfo{
Kubelet: node.Status.NodeInfo.KubeletVersion,
},
Labels: node.Labels,
},
Status: nodeStatus,
}, nil
}
func apiNodeStatus(status apiv1.NodeStatus, inputNode corev1.Node) apiv1.NodeStatus {
for _, address := range inputNode.Status.Addresses {
status.Addresses = append(status.Addresses, apiv1.NodeAddress{
Type: string(address.Type),
Address: address.Address,
})
}
reason, message := parseNodeConditions(inputNode)
status.ErrorReason += reason
status.ErrorMessage += message
status.Allocatable.Memory = inputNode.Status.Allocatable.Memory().String()
status.Allocatable.CPU = inputNode.Status.Allocatable.Cpu().String()
status.Capacity.Memory = inputNode.Status.Capacity.Memory().String()
status.Capacity.CPU = inputNode.Status.Capacity.Cpu().String()
status.NodeInfo.OperatingSystem = inputNode.Status.NodeInfo.OperatingSystem
status.NodeInfo.KubeletVersion = inputNode.Status.NodeInfo.KubeletVersion
status.NodeInfo.Architecture = inputNode.Status.NodeInfo.Architecture
status.NodeInfo.ContainerRuntimeVersion = inputNode.Status.NodeInfo.ContainerRuntimeVersion
status.NodeInfo.KernelVersion = inputNode.Status.NodeInfo.KernelVersion
return status
}
func parseNodeConditions(node corev1.Node) (reason string, message string) {
for _, condition := range node.Status.Conditions {
goodConditionType := condition.Type == corev1.NodeReady
if goodConditionType && condition.Status != corev1.ConditionTrue {
reason += condition.Reason + errGlue
message += condition.Message + errGlue
} else if !goodConditionType && condition.Status == corev1.ConditionTrue {
reason += condition.Reason + errGlue
message += condition.Message + errGlue
}
}
return reason, message
}