Merge pull request #18383 from timothysc/tools_removal

Auto commit by PR queue bot

cmd/kube-apiserver/app/server.go

@@ -48,11 +48,8 @@ import (
 	"k8s.io/kubernetes/pkg/master/ports"
 	"k8s.io/kubernetes/pkg/storage"
 	etcdstorage "k8s.io/kubernetes/pkg/storage/etcd"
-	"k8s.io/kubernetes/pkg/tools"
 	"k8s.io/kubernetes/pkg/util"
-	forked "k8s.io/kubernetes/third_party/forked/coreos/go-etcd/etcd"
 
-	"github.com/coreos/go-etcd/etcd"
 	"github.com/golang/glog"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -99,7 +96,6 @@ type APIServer struct {
 	AdmissionControl           string
 	AdmissionControlConfigFile string
 	EtcdServerList             []string
-	EtcdConfigFile             string
 	EtcdServersOverrides       []string
 	EtcdPathPrefix             string
 	CorsAllowedOriginList      []string
@@ -234,7 +230,6 @@ func (s *APIServer) AddFlags(fs *pflag.FlagSet) {
 	fs.StringVar(&s.AdmissionControl, "admission-control", s.AdmissionControl, "Ordered list of plug-ins to do admission control of resources into cluster. Comma-delimited list of: "+strings.Join(admission.GetPlugins(), ", "))
 	fs.StringVar(&s.AdmissionControlConfigFile, "admission-control-config-file", s.AdmissionControlConfigFile, "File with admission control configuration.")
 	fs.StringSliceVar(&s.EtcdServerList, "etcd-servers", s.EtcdServerList, "List of etcd servers to watch (http://ip:port), comma separated. Mutually exclusive with -etcd-config")
-	fs.StringVar(&s.EtcdConfigFile, "etcd-config", s.EtcdConfigFile, "The config file for the etcd client. Mutually exclusive with -etcd-servers.")
 	fs.StringSliceVar(&s.EtcdServersOverrides, "etcd-servers-overrides", s.EtcdServersOverrides, "Per-resource etcd servers overrides, comma separated. The individual override format: group/resource#servers, where servers are http://ip:port, semicolon separated.")
 	fs.StringVar(&s.EtcdPathPrefix, "etcd-prefix", s.EtcdPathPrefix, "The prefix for all resource paths in etcd.")
 	fs.StringSliceVar(&s.CorsAllowedOriginList, "cors-allowed-origins", s.CorsAllowedOriginList, "List of allowed origins for CORS, comma separated.  An allowed origin can be a regular expression to support subdomain matching.  If this list is empty CORS will not be enabled.")
@@ -283,36 +278,21 @@ func (s *APIServer) verifyClusterIPFlags() {
 	}
 }
 
-type newEtcdFunc func(string, []string, meta.VersionInterfacesFunc, string, string) (storage.Interface, error)
+type newEtcdFunc func([]string, meta.VersionInterfacesFunc, string, string) (storage.Interface, error)
 
-func newEtcd(etcdConfigFile string, etcdServerList []string, interfacesFunc meta.VersionInterfacesFunc, storageVersion, pathPrefix string) (etcdStorage storage.Interface, err error) {
+func newEtcd(etcdServerList []string, interfacesFunc meta.VersionInterfacesFunc, storageVersion, pathPrefix string) (etcdStorage storage.Interface, err error) {
 	if storageVersion == "" {
 		return etcdStorage, fmt.Errorf("storageVersion is required to create a etcd storage")
 	}
-	var client tools.EtcdClient
+	var storageConfig etcdstorage.EtcdConfig
-	if etcdConfigFile != "" {
+	storageConfig.ServerList = etcdServerList
-		client, err = etcd.NewClientFromFile(etcdConfigFile)
+	storageConfig.Prefix = pathPrefix
-		if err != nil {
-			return nil, err
-		}
-	} else {
-		etcdClient := etcd.NewClient(etcdServerList)
-		transport := &http.Transport{
-			Dial: forked.Dial,
-			TLSClientConfig: &tls.Config{
-				InsecureSkipVerify: true,
-			},
-			MaxIdleConnsPerHost: 500,
-		}
-		etcdClient.SetTransport(transport)
-		client = etcdClient
-	}
 	versionedInterface, err := interfacesFunc(storageVersion)
 	if err != nil {
 		return nil, err
 	}
-	etcdStorage = etcdstorage.NewEtcdStorage(client, versionedInterface.Codec, pathPrefix)
+	storageConfig.Codec = versionedInterface.Codec
-	return etcdStorage, nil
+	return storageConfig.NewStorage()
 }
 
 // convert to a map between group and groupVersions.
@@ -360,7 +340,7 @@ func updateEtcdOverrides(overrides []string, storageVersions map[string]string,
 		}
 
 		servers := strings.Split(tokens[1], ";")
-		etcdOverrideStorage, err := newEtcdFn("", servers, apigroup.InterfacesFor, storageVersions[apigroup.GroupVersion.Group], prefix)
+		etcdOverrideStorage, err := newEtcdFn(servers, apigroup.InterfacesFor, storageVersions[apigroup.GroupVersion.Group], prefix)
 		if err != nil {
 			glog.Fatalf("Invalid storage version or misconfigured etcd for %s: %v", tokens[0], err)
 		}
@@ -386,8 +366,8 @@ func (s *APIServer) Run(_ []string) error {
 	}
 	glog.Infof("Will report %v as public IP address.", s.AdvertiseAddress)
 
-	if (s.EtcdConfigFile != "" && len(s.EtcdServerList) != 0) || (s.EtcdConfigFile == "" && len(s.EtcdServerList) == 0) {
+	if len(s.EtcdServerList) == 0 {
-		glog.Fatalf("Specify either --etcd-servers or --etcd-config")
+		glog.Fatalf("--etcd-servers must be specified")
 	}
 
 	if s.KubernetesServiceNodePort > 0 && !s.ServiceNodePortRange.Contains(s.KubernetesServiceNodePort) {
@@ -471,7 +451,7 @@ func (s *APIServer) Run(_ []string) error {
 	if _, found := storageVersions[legacyV1Group.GroupVersion.Group]; !found {
 		glog.Fatalf("Couldn't find the storage version for group: %q in storageVersions: %v", legacyV1Group.GroupVersion.Group, storageVersions)
 	}
-	etcdStorage, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, legacyV1Group.InterfacesFor, storageVersions[legacyV1Group.GroupVersion.Group], s.EtcdPathPrefix)
+	etcdStorage, err := newEtcd(s.EtcdServerList, legacyV1Group.InterfacesFor, storageVersions[legacyV1Group.GroupVersion.Group], s.EtcdPathPrefix)
 	if err != nil {
 		glog.Fatalf("Invalid storage version or misconfigured etcd: %v", err)
 	}
@@ -485,7 +465,7 @@ func (s *APIServer) Run(_ []string) error {
 		if _, found := storageVersions[expGroup.GroupVersion.Group]; !found {
 			glog.Fatalf("Couldn't find the storage version for group: %q in storageVersions: %v", expGroup.GroupVersion.Group, storageVersions)
 		}
-		expEtcdStorage, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, expGroup.InterfacesFor, storageVersions[expGroup.GroupVersion.Group], s.EtcdPathPrefix)
+		expEtcdStorage, err := newEtcd(s.EtcdServerList, expGroup.InterfacesFor, storageVersions[expGroup.GroupVersion.Group], s.EtcdPathPrefix)
 		if err != nil {
 			glog.Fatalf("Invalid extensions storage version or misconfigured etcd: %v", err)
 		}

cmd/kube-apiserver/app/server_test.go

@@ -130,7 +130,7 @@ func TestUpdateEtcdOverrides(t *testing.T) {
 	}
 
 	for _, test := range testCases {
-		newEtcd := func(_ string, serverList []string, _ meta.VersionInterfacesFunc, _, _ string) (storage.Interface, error) {
+		newEtcd := func(serverList []string, _ meta.VersionInterfacesFunc, _, _ string) (storage.Interface, error) {
 			if !reflect.DeepEqual(test.servers, serverList) {
 				t.Errorf("unexpected server list, expected: %#v, got: %#v", test.servers, serverList)
 			}

contrib/mesos/pkg/election/etcd_master.go

@@ -23,7 +23,6 @@ import (
 	"github.com/coreos/go-etcd/etcd"
 	"github.com/golang/glog"
 	etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
-	"k8s.io/kubernetes/pkg/tools"
 	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/watch"
 )
@@ -38,7 +37,7 @@ type Master string
 func (Master) IsAnAPIObject() {}
 
 // NewEtcdMasterElector returns an implementation of election.MasterElector backed by etcd.
-func NewEtcdMasterElector(h tools.EtcdClient) MasterElector {
+func NewEtcdMasterElector(h *etcd.Client) MasterElector {
 	return &etcdMasterElector{etcd: h}
 }
 
@@ -46,7 +45,7 @@ type empty struct{}
 
 // internal implementation struct
 type etcdMasterElector struct {
-	etcd   tools.EtcdClient
+	etcd   *etcd.Client
 	done   chan empty
 	events chan watch.Event
 }

contrib/mesos/pkg/election/etcd_master_test.go

@@ -17,12 +17,9 @@ limitations under the License.
 package election
 
 import (
-	"reflect"
 	"testing"
 
-	"github.com/coreos/go-etcd/etcd"
 	etcdtesting "k8s.io/kubernetes/pkg/storage/etcd/testing"
-	"k8s.io/kubernetes/pkg/tools"
 	"k8s.io/kubernetes/pkg/watch"
 )
 
@@ -57,77 +54,21 @@ func TestEtcdMasterNoOther(t *testing.T) {
 	w.Stop()
 }
 
-// MockClient is wrapper aroung tools.EtcdClient.
-type MockClient struct {
-	client tools.EtcdClient
-	t      *testing.T
-	// afterGetFunc is called after each Get() call.
-	afterGetFunc func()
-	calls        []string
-}
-
-func (m *MockClient) GetCluster() []string {
-	return m.client.GetCluster()
-}
-
-func (m *MockClient) Get(key string, sort, recursive bool) (*etcd.Response, error) {
-	m.calls = append(m.calls, "get")
-	defer m.afterGetFunc()
-	response, err := m.client.Get(key, sort, recursive)
-	return response, err
-}
-
-func (m *MockClient) Set(key, value string, ttl uint64) (*etcd.Response, error) {
-	return m.client.Set(key, value, ttl)
-}
-
-func (m *MockClient) Create(key, value string, ttl uint64) (*etcd.Response, error) {
-	m.calls = append(m.calls, "create")
-	return m.client.Create(key, value, ttl)
-}
-
-func (m *MockClient) CompareAndSwap(key, value string, ttl uint64, prevValue string, prevIndex uint64) (*etcd.Response, error) {
-	return m.client.CompareAndSwap(key, value, ttl, prevValue, prevIndex)
-}
-
-func (m *MockClient) Delete(key string, recursive bool) (*etcd.Response, error) {
-	return m.client.Delete(key, recursive)
-}
-
-func (m *MockClient) Watch(prefix string, waitIndex uint64, recursive bool, receiver chan *etcd.Response, stop chan bool) (*etcd.Response, error) {
-	return m.client.Watch(prefix, waitIndex, recursive, receiver, stop)
-}
-
 func TestEtcdMasterNoOtherThenConflict(t *testing.T) {
 	server := etcdtesting.NewEtcdTestClientServer(t)
 	defer server.Terminate(t)
 
-	// We set up the following scenario:
-	// - after each Get() call, we write "baz" to a path
-	// - this is simulating someone else writing a data
-	// - the value written by someone else is the new value
 	path := "foo"
-	client := &MockClient{
+	master := NewEtcdMasterElector(server.Client)
-		client: server.Client,
+	leader := NewEtcdMasterElector(server.Client)
-		t:      t,
-		afterGetFunc: func() {
-			if _, err := server.Client.Set(path, "baz", 0); err != nil {
-				t.Errorf("unexpected error: %v", err)
-			}
-		},
-		calls: make([]string, 0),
-	}
 
-	master := NewEtcdMasterElector(client)
+	w_ldr := leader.Elect(path, "baz")
+	result := <-w_ldr.ResultChan()
 	w := master.Elect(path, "bar")
-	result := <-w.ResultChan()
+	result = <-w.ResultChan()
 	if result.Type != watch.Modified || result.Object.(Master) != "baz" {
 		t.Errorf("unexpected event: %#v", result)
 	}
 	w.Stop()
-
+	w_ldr.Stop()
-	expectedCalls := []string{"get", "create", "get"}
-	if !reflect.DeepEqual(client.calls, expectedCalls) {
-		t.Errorf("unexpected calls: %#v", client.calls)
-	}
 }

contrib/mesos/pkg/scheduler/service/service.go

@@ -75,7 +75,6 @@ import (
 	"k8s.io/kubernetes/pkg/healthz"
 	"k8s.io/kubernetes/pkg/master/ports"
 	etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
-	"k8s.io/kubernetes/pkg/tools"
 
 	// lock to this API version, compilation will fail when this becomes unsupported
 	_ "k8s.io/kubernetes/pkg/api/v1"
@@ -630,7 +629,7 @@ func validateLeadershipTransition(desired, current string) {
 }
 
 // hacked from https://github.com/GoogleCloudPlatform/kubernetes/blob/release-0.14/cmd/kube-apiserver/app/server.go
-func newEtcd(etcdConfigFile string, etcdServerList []string) (client tools.EtcdClient, err error) {
+func newEtcd(etcdConfigFile string, etcdServerList []string) (client *etcd.Client, err error) {
 	if etcdConfigFile != "" {
 		client, err = etcd.NewClientFromFile(etcdConfigFile)
 	} else {
@@ -639,7 +638,7 @@ func newEtcd(etcdConfigFile string, etcdServerList []string) (client tools.EtcdC
 	return
 }
 
-func (s *SchedulerServer) bootstrap(hks hyperkube.Interface, sc *schedcfg.Config) (*ha.SchedulerProcess, ha.DriverFactory, tools.EtcdClient, *mesos.ExecutorID) {
+func (s *SchedulerServer) bootstrap(hks hyperkube.Interface, sc *schedcfg.Config) (*ha.SchedulerProcess, ha.DriverFactory, *etcd.Client, *mesos.ExecutorID) {
 	s.frameworkName = strings.TrimSpace(s.frameworkName)
 	if s.frameworkName == "" {
 		log.Fatalf("framework-name must be a non-empty string")
@@ -917,7 +916,7 @@ func (s *SchedulerServer) buildFrameworkInfo() (info *mesos.FrameworkInfo, cred
 	return
 }
 
-func (s *SchedulerServer) fetchFrameworkID(client tools.EtcdClient) (*mesos.FrameworkID, error) {
+func (s *SchedulerServer) fetchFrameworkID(client *etcd.Client) (*mesos.FrameworkID, error) {
 	if s.failoverTimeout > 0 {
 		if response, err := client.Get(meta.FrameworkIDKey, false, false); err != nil {
 			if !etcdutil.IsEtcdNotFound(err) {

docs/admin/kube-apiserver.md

@@ -64,7 +64,6 @@ kube-apiserver
       --cloud-provider="": The provider for cloud services.  Empty string for no provider.
       --cluster-name="kubernetes": The instance prefix for the cluster
       --cors-allowed-origins=[]: List of allowed origins for CORS, comma separated.  An allowed origin can be a regular expression to support subdomain matching.  If this list is empty CORS will not be enabled.
-      --etcd-config="": The config file for the etcd client. Mutually exclusive with -etcd-servers.
       --etcd-prefix="/registry": The prefix for all resource paths in etcd.
       --etcd-servers=[]: List of etcd servers to watch (http://ip:port), comma separated. Mutually exclusive with -etcd-config
       --etcd-servers-overrides=[]: Per-resource etcd servers overrides, comma separated. The individual override format: group/resource#servers, where servers are http://ip:port, semicolon separated.
@@ -107,7 +106,7 @@ kube-apiserver
       --watch-cache[=true]: Enable watch caching in the apiserver
 ```
 
-###### Auto generated by spf13/cobra on 3-Dec-2015
+###### Auto generated by spf13/cobra on 9-Dec-2015
 
 
 <!-- BEGIN MUNGE: GENERATED_ANALYTICS -->

pkg/storage/etcd/etcd_helper.go

@@ -17,14 +17,15 @@ limitations under the License.
 package etcd
 
 import (
+	"crypto/tls"
 	"errors"
 	"fmt"
+	"net/http"
 	"path"
 	"reflect"
 	"strings"
 	"time"
 
-	"github.com/coreos/go-etcd/etcd"
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/meta"
 	"k8s.io/kubernetes/pkg/conversion"
@@ -32,15 +33,48 @@ import (
 	"k8s.io/kubernetes/pkg/storage"
 	"k8s.io/kubernetes/pkg/storage/etcd/metrics"
 	etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
-	"k8s.io/kubernetes/pkg/tools"
 	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/watch"
 
+	"github.com/coreos/go-etcd/etcd"
 	"github.com/golang/glog"
 	"golang.org/x/net/context"
+	forked "k8s.io/kubernetes/third_party/forked/coreos/go-etcd/etcd"
 )
 
-func NewEtcdStorage(client tools.EtcdClient, codec runtime.Codec, prefix string) storage.Interface {
+// storage.Config object for etcd.
+type EtcdConfig struct {
+	ServerList []string
+	Codec      runtime.Codec
+	Prefix     string
+}
+
+// implements storage.Config
+func (c *EtcdConfig) GetType() string {
+	return "etcd"
+}
+
+// implements storage.Config
+func (c *EtcdConfig) NewStorage() (storage.Interface, error) {
+	etcdClient := etcd.NewClient(c.ServerList)
+	if etcdClient == nil {
+		return nil, errors.New("Failed to create new etcd client from serverlist")
+	}
+	transport := &http.Transport{
+		Dial: forked.Dial,
+		TLSClientConfig: &tls.Config{
+			InsecureSkipVerify: true,
+		},
+		MaxIdleConnsPerHost: 500,
+	}
+	etcdClient.SetTransport(transport)
+
+	return NewEtcdStorage(etcdClient, c.Codec, c.Prefix), nil
+}
+
+// Creates a new storage interface from the client
+// TODO: deprecate in favor of storage.Config abstraction over time
+func NewEtcdStorage(client *etcd.Client, codec runtime.Codec, prefix string) storage.Interface {
 	return &etcdHelper{
 		client:     client,
 		codec:      codec,
@@ -53,7 +87,7 @@ func NewEtcdStorage(client tools.EtcdClient, codec runtime.Codec, prefix string)
 
 // etcdHelper is the reference implementation of storage.Interface.
 type etcdHelper struct {
-	client tools.EtcdClient
+	client *etcd.Client
 	codec  runtime.Codec
 	copier runtime.ObjectCopier
 	// optional, has to be set to perform any atomic operations

pkg/storage/etcd/etcd_helper_test.go

@@ -22,6 +22,7 @@ import (
 	"sync"
 	"testing"
 
+	"github.com/coreos/go-etcd/etcd"
 	"github.com/stretchr/testify/assert"
 	"golang.org/x/net/context"
 	"k8s.io/kubernetes/pkg/api"
@@ -34,10 +35,6 @@ import (
 	etcdtesting "k8s.io/kubernetes/pkg/storage/etcd/testing"
 	etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
 	storagetesting "k8s.io/kubernetes/pkg/storage/testing"
-
-	// TODO: once fakeClient has been purged move utils
-	// and eliminate these deps
-	"k8s.io/kubernetes/pkg/tools"
 )
 
 const validEtcdVersion = "etcd 2.0.9"
@@ -58,7 +55,7 @@ func init() {
 	)
 }
 
-func newEtcdHelper(client tools.EtcdClient, codec runtime.Codec, prefix string) etcdHelper {
+func newEtcdHelper(client *etcd.Client, codec runtime.Codec, prefix string) etcdHelper {
 	return *NewEtcdStorage(client, codec, prefix).(*etcdHelper)
 }
 

pkg/storage/etcd/etcd_watcher.go

@@ -25,7 +25,6 @@ import (
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/storage"
 	etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
-	"k8s.io/kubernetes/pkg/tools"
 	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/watch"
 
@@ -119,7 +118,7 @@ func newEtcdWatcher(list bool, include includeFunc, filter storage.FilterFunc, e
 
 // etcdWatch calls etcd's Watch function, and handles any errors. Meant to be called
 // as a goroutine.
-func (w *etcdWatcher) etcdWatch(client tools.EtcdClient, key string, resourceVersion uint64) {
+func (w *etcdWatcher) etcdWatch(client *etcd.Client, key string, resourceVersion uint64) {
 	defer util.HandleCrash()
 	defer close(w.etcdError)
 	if resourceVersion == 0 {
@@ -137,7 +136,7 @@ func (w *etcdWatcher) etcdWatch(client tools.EtcdClient, key string, resourceVer
 }
 
 // etcdGetInitialWatchState turns an etcd Get request into a watch equivalent
-func etcdGetInitialWatchState(client tools.EtcdClient, key string, recursive bool, incoming chan<- *etcd.Response) (resourceVersion uint64, err error) {
+func etcdGetInitialWatchState(client *etcd.Client, key string, recursive bool, incoming chan<- *etcd.Response) (resourceVersion uint64, err error) {
 	resp, err := client.Get(key, false, recursive)
 	if err != nil {
 		if !etcdutil.IsEtcdNotFound(err) {

pkg/storage/etcd/testing/utils.go

@@ -26,8 +26,6 @@ import (
 	"testing"
 	"time"
 
-	"k8s.io/kubernetes/pkg/tools"
-
 	"github.com/coreos/etcd/etcdserver"
 	"github.com/coreos/etcd/etcdserver/etcdhttp"
 	"github.com/coreos/etcd/pkg/transport"
@@ -40,7 +38,7 @@ import (
 type EtcdTestServer struct {
 	etcdserver.ServerConfig
 	PeerListeners, ClientListeners []net.Listener
-	Client                         tools.EtcdClient
+	Client                         *goetcd.Client
 
 	raftHandler http.Handler
 	s           *etcdserver.EtcdServer
@@ -128,7 +126,7 @@ func (m *EtcdTestServer) launch(t *testing.T) error {
 
 // Terminate will shutdown the running etcd server
 func (m *EtcdTestServer) Terminate(t *testing.T) {
-	m.Client.(*goetcd.Client).Close()
+	m.Client.Close()
 	m.s.Stop()
 	for _, hs := range m.hss {
 		hs.CloseClientConnections()

pkg/storage/interfaces.go

@@ -149,3 +149,13 @@ type Interface interface {
 	// Codec provides access to the underlying codec being used by the implementation.
 	Codec() runtime.Codec
 }
+
+// Config interface allows storage tiers to generate the proper storage.interface
+// and reduce the dependencies to encapsulate storage.
+type Config interface {
+	// Creates the Interface base on ConfigObject
+	NewStorage() (Interface, error)
+
+	// This function is used to enforce membership, and return the underlying type
+	GetType() string
+}

pkg/tools/doc.go

@@ -1,19 +0,0 @@
-/*
-Copyright 2014 The Kubernetes Authors All rights reserved.
-
-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 tools implements types which help work with etcd which depend on the api package.
-// TODO: move this package to an etcd specific utility package.
-package tools

pkg/tools/interfaces.go

@@ -1,34 +0,0 @@
-/*
-Copyright 2014 The Kubernetes Authors All rights reserved.
-
-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 tools
-
-import (
-	"github.com/coreos/go-etcd/etcd"
-)
-
-// EtcdClient is an injectable interface for testing.
-type EtcdClient interface {
-	GetCluster() []string
-	Get(key string, sort, recursive bool) (*etcd.Response, error)
-	Set(key, value string, ttl uint64) (*etcd.Response, error)
-	Create(key, value string, ttl uint64) (*etcd.Response, error)
-	CompareAndSwap(key, value string, ttl uint64, prevValue string, prevIndex uint64) (*etcd.Response, error)
-	Delete(key string, recursive bool) (*etcd.Response, error)
-	// I'd like to use directional channels here (e.g. <-chan) but this interface mimics
-	// the etcd client interface which doesn't, and it doesn't seem worth it to wrap the api.
-	Watch(prefix string, waitIndex uint64, recursive bool, receiver chan *etcd.Response, stop chan bool) (*etcd.Response, error)
-}