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https://github.com/k3s-io/kubernetes.git
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Extract more redundancy
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parent
25ab3b695e
commit
77556a5eb0
@ -71,7 +71,8 @@ func makePodKey(machine, podID string) string {
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func (registry *EtcdRegistry) ListPods(query labels.Query) ([]api.Pod, error) {
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pods := []api.Pod{}
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for _, machine := range registry.machines {
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machinePods, err := registry.listPodsForMachine(machine)
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var machinePods []api.Pod
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err := registry.extractList("/registry/hosts/"+machine+"/pods", &machinePods)
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if err != nil {
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return pods, err
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}
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@ -120,9 +121,30 @@ func (r *EtcdRegistry) extractList(key string, slicePtr interface{}) error {
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return nil
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}
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func (registry *EtcdRegistry) listPodsForMachine(machine string) (pods []api.Pod, err error) {
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err = registry.extractList("/registry/hosts/"+machine+"/pods", &pods)
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return
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// Unmarshals json found at key into objPtr.
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func (r *EtcdRegistry) extractObj(key string, objPtr interface{}, ignoreNotFound bool) error {
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response, err := r.etcdClient.Get(key, false, false)
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returnZero := false
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if err != nil {
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if ignoreNotFound && isEtcdNotFound(err) {
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returnZero = true
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} else {
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return err
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}
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}
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if !returnZero && (response.Node == nil || len(response.Node.Value) == 0) {
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if ignoreNotFound {
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returnZero = true
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} else {
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return fmt.Errorf("key '%v' found no nodes field: %#v", key, response)
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}
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}
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if returnZero {
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pv := reflect.ValueOf(objPtr)
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pv.Elem().Set(reflect.Zero(pv.Type().Elem()))
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return nil
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}
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return json.Unmarshal([]byte(response.Node.Value), objPtr)
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}
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func (registry *EtcdRegistry) GetPod(podID string) (*api.Pod, error) {
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@ -134,19 +156,9 @@ func makeContainerKey(machine string) string {
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return "/registry/hosts/" + machine + "/kubelet"
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}
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func (registry *EtcdRegistry) loadManifests(machine string) ([]api.ContainerManifest, error) {
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var manifests []api.ContainerManifest
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response, err := registry.etcdClient.Get(makeContainerKey(machine), false, false)
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if err != nil {
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if isEtcdNotFound(err) {
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err = nil
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manifests = []api.ContainerManifest{}
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}
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} else {
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err = json.Unmarshal([]byte(response.Node.Value), &manifests)
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}
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return manifests, err
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func (registry *EtcdRegistry) loadManifests(machine string) (manifests []api.ContainerManifest, err error) {
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err = registry.extractObj(makeContainerKey(machine), &manifests, true)
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return
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}
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func (registry *EtcdRegistry) updateManifests(machine string, manifests []api.ContainerManifest) error {
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@ -227,23 +239,14 @@ func (registry *EtcdRegistry) deletePodFromMachine(machine, podID string) error
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return err
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}
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func (registry *EtcdRegistry) getPodForMachine(machine, podID string) (api.Pod, error) {
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func (registry *EtcdRegistry) getPodForMachine(machine, podID string) (pod api.Pod, err error) {
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key := makePodKey(machine, podID)
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result, err := registry.etcdClient.Get(key, false, false)
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err = registry.extractObj(key, &pod, false)
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if err != nil {
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if isEtcdNotFound(err) {
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return api.Pod{}, fmt.Errorf("not found (%#v).", err)
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} else {
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return api.Pod{}, err
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}
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return
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}
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if result.Node == nil || len(result.Node.Value) == 0 {
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return api.Pod{}, fmt.Errorf("no nodes field: %#v", result)
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}
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pod := api.Pod{}
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err = json.Unmarshal([]byte(result.Node.Value), &pod)
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pod.CurrentState.Host = machine
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return pod, err
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return
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}
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func (registry *EtcdRegistry) findPod(podID string) (api.Pod, string, error) {
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@ -286,19 +289,11 @@ func makeControllerKey(id string) string {
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func (registry *EtcdRegistry) GetController(controllerID string) (*api.ReplicationController, error) {
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var controller api.ReplicationController
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key := makeControllerKey(controllerID)
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result, err := registry.etcdClient.Get(key, false, false)
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err := registry.extractObj(key, &controller, false)
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if err != nil {
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if isEtcdNotFound(err) {
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return nil, fmt.Errorf("controller %s not found", controllerID)
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} else {
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return nil, err
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}
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return nil, err
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}
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if result.Node == nil || len(result.Node.Value) == 0 {
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return nil, fmt.Errorf("no nodes field: %#v", result)
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}
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err = json.Unmarshal([]byte(result.Node.Value), &controller)
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return &controller, err
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return &controller, nil
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}
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func (registry *EtcdRegistry) CreateController(controller api.ReplicationController) error {
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@ -344,20 +339,12 @@ func (registry *EtcdRegistry) CreateService(svc api.Service) error {
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func (registry *EtcdRegistry) GetService(name string) (*api.Service, error) {
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key := makeServiceKey(name)
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response, err := registry.etcdClient.Get(key, false, false)
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if err != nil {
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if isEtcdNotFound(err) {
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return nil, fmt.Errorf("service %s was not found.", name)
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} else {
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return nil, err
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}
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}
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var svc api.Service
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err = json.Unmarshal([]byte(response.Node.Value), &svc)
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err := registry.extractObj(key, &svc, false)
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if err != nil {
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return nil, err
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}
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return &svc, err
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return &svc, nil
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}
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func (registry *EtcdRegistry) DeleteService(name string) error {
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