mirror of https://github.com/k3s-io/k3s
237 lines
7.4 KiB
Go
237 lines
7.4 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package gce
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import (
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/kubernetes/pkg/master/ports"
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utilversion "k8s.io/kubernetes/pkg/util/version"
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"github.com/golang/glog"
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compute "google.golang.org/api/compute/v1"
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)
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const (
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nodesHealthCheckPath = "/healthz"
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lbNodesHealthCheckPort = ports.ProxyHealthzPort
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)
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var (
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minNodesHealthCheckVersion *utilversion.Version
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)
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func init() {
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if v, err := utilversion.ParseGeneric("1.7.2"); err != nil {
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glog.Fatalf("Failed to parse version for minNodesHealthCheckVersion: %v", err)
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} else {
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minNodesHealthCheckVersion = v
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}
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}
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func newHealthcheckMetricContext(request string) *metricContext {
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return &metricContext{
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start: time.Now(),
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attributes: []string{"healthcheck_" + request, unusedMetricLabel, unusedMetricLabel},
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}
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}
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// GetHttpHealthCheck returns the given HttpHealthCheck by name.
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func (gce *GCECloud) GetHttpHealthCheck(name string) (*compute.HttpHealthCheck, error) {
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mc := newHealthcheckMetricContext("get_legacy")
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v, err := gce.service.HttpHealthChecks.Get(gce.projectID, name).Do()
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return v, mc.Observe(err)
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}
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// UpdateHttpHealthCheck applies the given HttpHealthCheck as an update.
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func (gce *GCECloud) UpdateHttpHealthCheck(hc *compute.HttpHealthCheck) error {
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mc := newHealthcheckMetricContext("update_legacy")
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op, err := gce.service.HttpHealthChecks.Update(gce.projectID, hc.Name, hc).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// DeleteHttpHealthCheck deletes the given HttpHealthCheck by name.
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func (gce *GCECloud) DeleteHttpHealthCheck(name string) error {
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mc := newHealthcheckMetricContext("delete_legacy")
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op, err := gce.service.HttpHealthChecks.Delete(gce.projectID, name).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// CreateHttpHealthCheck creates the given HttpHealthCheck.
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func (gce *GCECloud) CreateHttpHealthCheck(hc *compute.HttpHealthCheck) error {
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mc := newHealthcheckMetricContext("create_legacy")
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op, err := gce.service.HttpHealthChecks.Insert(gce.projectID, hc).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// ListHttpHealthChecks lists all HttpHealthChecks in the project.
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func (gce *GCECloud) ListHttpHealthChecks() (*compute.HttpHealthCheckList, error) {
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mc := newHealthcheckMetricContext("list_legacy")
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// TODO: use PageToken to list all not just the first 500
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v, err := gce.service.HttpHealthChecks.List(gce.projectID).Do()
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return v, mc.Observe(err)
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}
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// Legacy HTTPS Health Checks
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// GetHttpsHealthCheck returns the given HttpsHealthCheck by name.
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func (gce *GCECloud) GetHttpsHealthCheck(name string) (*compute.HttpsHealthCheck, error) {
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mc := newHealthcheckMetricContext("get_legacy")
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v, err := gce.service.HttpsHealthChecks.Get(gce.projectID, name).Do()
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mc.Observe(err)
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return v, err
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}
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// UpdateHttpsHealthCheck applies the given HttpsHealthCheck as an update.
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func (gce *GCECloud) UpdateHttpsHealthCheck(hc *compute.HttpsHealthCheck) error {
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mc := newHealthcheckMetricContext("update_legacy")
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op, err := gce.service.HttpsHealthChecks.Update(gce.projectID, hc.Name, hc).Do()
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if err != nil {
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mc.Observe(err)
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return err
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// DeleteHttpsHealthCheck deletes the given HttpsHealthCheck by name.
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func (gce *GCECloud) DeleteHttpsHealthCheck(name string) error {
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mc := newHealthcheckMetricContext("delete_legacy")
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op, err := gce.service.HttpsHealthChecks.Delete(gce.projectID, name).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// CreateHttpsHealthCheck creates the given HttpsHealthCheck.
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func (gce *GCECloud) CreateHttpsHealthCheck(hc *compute.HttpsHealthCheck) error {
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mc := newHealthcheckMetricContext("create_legacy")
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op, err := gce.service.HttpsHealthChecks.Insert(gce.projectID, hc).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// ListHttpsHealthChecks lists all HttpsHealthChecks in the project.
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func (gce *GCECloud) ListHttpsHealthChecks() (*compute.HttpsHealthCheckList, error) {
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mc := newHealthcheckMetricContext("list_legacy")
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// TODO: use PageToken to list all not just the first 500
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v, err := gce.service.HttpsHealthChecks.List(gce.projectID).Do()
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return v, mc.Observe(err)
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}
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// Generic HealthCheck
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// GetHealthCheck returns the given HealthCheck by name.
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func (gce *GCECloud) GetHealthCheck(name string) (*compute.HealthCheck, error) {
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mc := newHealthcheckMetricContext("get")
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v, err := gce.service.HealthChecks.Get(gce.projectID, name).Do()
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return v, mc.Observe(err)
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}
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// UpdateHealthCheck applies the given HealthCheck as an update.
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func (gce *GCECloud) UpdateHealthCheck(hc *compute.HealthCheck) error {
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mc := newHealthcheckMetricContext("update")
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op, err := gce.service.HealthChecks.Update(gce.projectID, hc.Name, hc).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// DeleteHealthCheck deletes the given HealthCheck by name.
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func (gce *GCECloud) DeleteHealthCheck(name string) error {
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mc := newHealthcheckMetricContext("delete")
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op, err := gce.service.HealthChecks.Delete(gce.projectID, name).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// CreateHealthCheck creates the given HealthCheck.
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func (gce *GCECloud) CreateHealthCheck(hc *compute.HealthCheck) error {
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mc := newHealthcheckMetricContext("create")
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op, err := gce.service.HealthChecks.Insert(gce.projectID, hc).Do()
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if err != nil {
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return mc.Observe(err)
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}
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return gce.waitForGlobalOp(op, mc)
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}
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// ListHealthChecks lists all HealthCheck in the project.
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func (gce *GCECloud) ListHealthChecks() (*compute.HealthCheckList, error) {
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mc := newHealthcheckMetricContext("list")
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// TODO: use PageToken to list all not just the first 500
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v, err := gce.service.HealthChecks.List(gce.projectID).Do()
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return v, mc.Observe(err)
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}
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// GetNodesHealthCheckPort returns the health check port used by the GCE load
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// balancers (l4) for performing health checks on nodes.
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func GetNodesHealthCheckPort() int32 {
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return lbNodesHealthCheckPort
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}
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// GetNodesHealthCheckPath returns the health check path used by the GCE load
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// balancers (l4) for performing health checks on nodes.
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func GetNodesHealthCheckPath() string {
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return nodesHealthCheckPath
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}
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// isAtLeastMinNodesHealthCheckVersion checks if a version is higher than
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// `minNodesHealthCheckVersion`.
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func isAtLeastMinNodesHealthCheckVersion(vstring string) bool {
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version, err := utilversion.ParseGeneric(vstring)
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if err != nil {
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glog.Errorf("vstring (%s) is not a valid version string: %v", vstring, err)
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return false
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}
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return version.AtLeast(minNodesHealthCheckVersion)
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}
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// supportsNodesHealthCheck returns false if anyone of the nodes has version
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// lower than `minNodesHealthCheckVersion`.
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func supportsNodesHealthCheck(nodes []*v1.Node) bool {
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for _, node := range nodes {
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if !isAtLeastMinNodesHealthCheckVersion(node.Status.NodeInfo.KubeProxyVersion) {
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return false
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}
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}
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return true
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}
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