268 lines
7.8 KiB
Go
268 lines
7.8 KiB
Go
/*
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Copyright 2014 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 fake
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import (
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"errors"
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"fmt"
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"net"
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"regexp"
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"sync"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/cloudprovider"
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)
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const ProviderName = "fake"
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// FakeBalancer is a fake storage of balancer information
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type FakeBalancer struct {
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Name string
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Region string
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LoadBalancerIP string
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Ports []v1.ServicePort
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Hosts []*v1.Node
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}
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type FakeUpdateBalancerCall struct {
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Service *v1.Service
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Hosts []*v1.Node
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}
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// FakeCloud is a test-double implementation of Interface, LoadBalancer, Instances, and Routes. It is useful for testing.
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type FakeCloud struct {
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Exists bool
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Err error
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Calls []string
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Addresses []v1.NodeAddress
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ExtID map[types.NodeName]string
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InstanceTypes map[types.NodeName]string
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Machines []types.NodeName
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NodeResources *v1.NodeResources
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ClusterList []string
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MasterName string
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ExternalIP net.IP
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Balancers map[string]FakeBalancer
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UpdateCalls []FakeUpdateBalancerCall
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RouteMap map[string]*FakeRoute
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Lock sync.Mutex
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cloudprovider.Zone
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}
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type FakeRoute struct {
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ClusterName string
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Route cloudprovider.Route
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}
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func (f *FakeCloud) addCall(desc string) {
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f.Calls = append(f.Calls, desc)
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}
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// ClearCalls clears internal record of method calls to this FakeCloud.
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func (f *FakeCloud) ClearCalls() {
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f.Calls = []string{}
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}
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func (f *FakeCloud) ListClusters() ([]string, error) {
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return f.ClusterList, f.Err
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}
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func (f *FakeCloud) Master(name string) (string, error) {
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return f.MasterName, f.Err
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}
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func (f *FakeCloud) Clusters() (cloudprovider.Clusters, bool) {
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return f, true
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}
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// ProviderName returns the cloud provider ID.
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func (f *FakeCloud) ProviderName() string {
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return ProviderName
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}
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// ScrubDNS filters DNS settings for pods.
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func (f *FakeCloud) ScrubDNS(nameservers, searches []string) (nsOut, srchOut []string) {
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return nameservers, searches
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}
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// LoadBalancer returns a fake implementation of LoadBalancer.
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// Actually it just returns f itself.
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func (f *FakeCloud) LoadBalancer() (cloudprovider.LoadBalancer, bool) {
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return f, true
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}
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// Instances returns a fake implementation of Instances.
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//
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// Actually it just returns f itself.
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func (f *FakeCloud) Instances() (cloudprovider.Instances, bool) {
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return f, true
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}
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func (f *FakeCloud) Zones() (cloudprovider.Zones, bool) {
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return f, true
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}
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func (f *FakeCloud) Routes() (cloudprovider.Routes, bool) {
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return f, true
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}
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// GetLoadBalancer is a stub implementation of LoadBalancer.GetLoadBalancer.
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func (f *FakeCloud) GetLoadBalancer(clusterName string, service *v1.Service) (*v1.LoadBalancerStatus, bool, error) {
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status := &v1.LoadBalancerStatus{}
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status.Ingress = []v1.LoadBalancerIngress{{IP: f.ExternalIP.String()}}
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return status, f.Exists, f.Err
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}
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// EnsureLoadBalancer is a test-spy implementation of LoadBalancer.EnsureLoadBalancer.
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// It adds an entry "create" into the internal method call record.
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func (f *FakeCloud) EnsureLoadBalancer(clusterName string, service *v1.Service, nodes []*v1.Node) (*v1.LoadBalancerStatus, error) {
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f.addCall("create")
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if f.Balancers == nil {
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f.Balancers = make(map[string]FakeBalancer)
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}
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name := cloudprovider.GetLoadBalancerName(service)
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spec := service.Spec
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zone, err := f.GetZone()
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if err != nil {
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return nil, err
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}
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region := zone.Region
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f.Balancers[name] = FakeBalancer{name, region, spec.LoadBalancerIP, spec.Ports, nodes}
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status := &v1.LoadBalancerStatus{}
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status.Ingress = []v1.LoadBalancerIngress{{IP: f.ExternalIP.String()}}
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return status, f.Err
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}
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// UpdateLoadBalancer is a test-spy implementation of LoadBalancer.UpdateLoadBalancer.
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// It adds an entry "update" into the internal method call record.
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func (f *FakeCloud) UpdateLoadBalancer(clusterName string, service *v1.Service, nodes []*v1.Node) error {
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f.addCall("update")
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f.UpdateCalls = append(f.UpdateCalls, FakeUpdateBalancerCall{service, nodes})
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return f.Err
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}
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// EnsureLoadBalancerDeleted is a test-spy implementation of LoadBalancer.EnsureLoadBalancerDeleted.
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// It adds an entry "delete" into the internal method call record.
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func (f *FakeCloud) EnsureLoadBalancerDeleted(clusterName string, service *v1.Service) error {
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f.addCall("delete")
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return f.Err
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}
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func (f *FakeCloud) AddSSHKeyToAllInstances(user string, keyData []byte) error {
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return errors.New("unimplemented")
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}
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// Implementation of Instances.CurrentNodeName
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func (f *FakeCloud) CurrentNodeName(hostname string) (types.NodeName, error) {
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return types.NodeName(hostname), nil
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}
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// NodeAddresses is a test-spy implementation of Instances.NodeAddresses.
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// It adds an entry "node-addresses" into the internal method call record.
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func (f *FakeCloud) NodeAddresses(instance types.NodeName) ([]v1.NodeAddress, error) {
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f.addCall("node-addresses")
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return f.Addresses, f.Err
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}
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// ExternalID is a test-spy implementation of Instances.ExternalID.
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// It adds an entry "external-id" into the internal method call record.
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// It returns an external id to the mapped instance name, if not found, it will return "ext-{instance}"
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func (f *FakeCloud) ExternalID(nodeName types.NodeName) (string, error) {
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f.addCall("external-id")
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return f.ExtID[nodeName], f.Err
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}
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// InstanceID returns the cloud provider ID of the node with the specified Name.
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func (f *FakeCloud) InstanceID(nodeName types.NodeName) (string, error) {
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f.addCall("instance-id")
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return f.ExtID[nodeName], nil
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}
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// InstanceType returns the type of the specified instance.
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func (f *FakeCloud) InstanceType(instance types.NodeName) (string, error) {
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f.addCall("instance-type")
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return f.InstanceTypes[instance], nil
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}
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// List is a test-spy implementation of Instances.List.
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// It adds an entry "list" into the internal method call record.
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func (f *FakeCloud) List(filter string) ([]types.NodeName, error) {
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f.addCall("list")
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result := []types.NodeName{}
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for _, machine := range f.Machines {
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if match, _ := regexp.MatchString(filter, string(machine)); match {
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result = append(result, machine)
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}
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}
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return result, f.Err
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}
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func (f *FakeCloud) GetZone() (cloudprovider.Zone, error) {
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f.addCall("get-zone")
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return f.Zone, f.Err
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}
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func (f *FakeCloud) ListRoutes(clusterName string) ([]*cloudprovider.Route, error) {
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f.Lock.Lock()
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defer f.Lock.Unlock()
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f.addCall("list-routes")
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var routes []*cloudprovider.Route
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for _, fakeRoute := range f.RouteMap {
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if clusterName == fakeRoute.ClusterName {
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routeCopy := fakeRoute.Route
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routes = append(routes, &routeCopy)
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}
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}
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return routes, f.Err
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}
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func (f *FakeCloud) CreateRoute(clusterName string, nameHint string, route *cloudprovider.Route) error {
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f.Lock.Lock()
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defer f.Lock.Unlock()
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f.addCall("create-route")
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name := clusterName + "-" + nameHint
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if _, exists := f.RouteMap[name]; exists {
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f.Err = fmt.Errorf("route %q already exists", name)
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return f.Err
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}
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fakeRoute := FakeRoute{}
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fakeRoute.Route = *route
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fakeRoute.Route.Name = name
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fakeRoute.ClusterName = clusterName
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f.RouteMap[name] = &fakeRoute
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return nil
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}
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func (f *FakeCloud) DeleteRoute(clusterName string, route *cloudprovider.Route) error {
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f.Lock.Lock()
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defer f.Lock.Unlock()
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f.addCall("delete-route")
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name := route.Name
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if _, exists := f.RouteMap[name]; !exists {
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f.Err = fmt.Errorf("no route found with name %q", name)
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return f.Err
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}
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delete(f.RouteMap, name)
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return nil
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}
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