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Move duplicated logic into single function.

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This commit is contained in:
Daniel Smith 2014-06-17 13:19:25 -07:00
parent 0c68c6307a
commit 25ab3b695e
1 changed files with 31 additions and 39 deletions
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64
pkg/registry/etcd_registry.go
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@ -19,6 +19,7 @@ import (
"encoding/json"
"fmt"
"log"
"reflect"
"github.com/coreos/go-etcd/etcd"
@ -96,20 +97,32 @@ func (registry *EtcdRegistry) listEtcdNode(key string) ([]*etcd.Node, error) {
return result.Node.Nodes, nil
}
func (registry *EtcdRegistry) listPodsForMachine(machine string) ([]api.Pod, error) {
pods := []api.Pod{}
key := "/registry/hosts/" + machine + "/pods"
nodes, err := registry.listEtcdNode(key)
for _, node := range nodes {
pod := api.Pod{}
err = json.Unmarshal([]byte(node.Value), &pod)
// Extract a go object per etcd node into a slice.
func (r *EtcdRegistry) extractList(key string, slicePtr interface{}) error {
nodes, err := r.listEtcdNode(key)
if err != nil {
return pods, err
return err
}
pod.CurrentState.Host = machine
pods = append(pods, pod)
pv := reflect.ValueOf(slicePtr)
if pv.Type().Kind() != reflect.Ptr || pv.Type().Elem().Kind() != reflect.Slice {
// This should not happen at runtime.
panic("need ptr to slice")
}
return pods, err
v := pv.Elem()
for _, node := range nodes {
obj := reflect.New(v.Type().Elem())
err = json.Unmarshal([]byte(node.Value), obj.Interface())
if err != nil {
return err
}
v.Set(reflect.Append(v, obj.Elem()))
}
return nil
}
func (registry *EtcdRegistry) listPodsForMachine(machine string) (pods []api.Pod, err error) {
err = registry.extractList("/registry/hosts/"+machine+"/pods", &pods)
return
}
func (registry *EtcdRegistry) GetPod(podID string) (*api.Pod, error) {
@ -262,18 +275,9 @@ func isEtcdNotFound(err error) bool {
func (registry *EtcdRegistry) ListControllers() ([]api.ReplicationController, error) {
var controllers []api.ReplicationController
key := "/registry/controllers"
nodes, err := registry.listEtcdNode(key)
for _, node := range nodes {
var controller api.ReplicationController
err = json.Unmarshal([]byte(node.Value), &controller)
if err != nil {
err := registry.extractList("/registry/controllers", &controllers)
return controllers, err
}
controllers = append(controllers, controller)
}
return controllers, nil
}
func makeControllerKey(id string) string {
return "/registry/controllers/" + id
@ -323,21 +327,9 @@ func makeServiceKey(name string) string {
}
func (registry *EtcdRegistry) ListServices() (api.ServiceList, error) {
nodes, err := registry.listEtcdNode("/registry/services/specs")
if err != nil {
return api.ServiceList{}, err
}
var services []api.Service
for _, node := range nodes {
var svc api.Service
err := json.Unmarshal([]byte(node.Value), &svc)
if err != nil {
return api.ServiceList{}, err
}
services = append(services, svc)
}
return api.ServiceList{Items: services}, nil
var list api.ServiceList
err := registry.extractList("/registry/services/specs", &list.Items)
return list, err
}
func (registry *EtcdRegistry) CreateService(svc api.Service) error {