Remove untested and unused code

pkg/proxy/config/file.go

@@ -1,131 +0,0 @@
-/*
-Copyright 2014 Google Inc. 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.
-*/
-
-// Reads the configuration from the file. Example file for two services [nodejs & mysql]
-//{"Services": [
-//   {
-//      "Name":"nodejs",
-//      "Port":10000,
-//      "Endpoints":["10.240.180.168:8000", "10.240.254.199:8000", "10.240.62.150:8000"]
-//   },
-//   {
-//      "Name":"mysql",
-//      "Port":10001,
-//      "Endpoints":["10.240.180.168:9000", "10.240.254.199:9000", "10.240.62.150:9000"]
-//   }
-//]
-//}
-
-package config
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io/ioutil"
-	"reflect"
-	"time"
-
-	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
-	"github.com/golang/glog"
-)
-
-// serviceConfig is a deserialized form of the config file format which ConfigSourceFile accepts.
-// TODO: this is apparently untested; is it used?
-type serviceConfig struct {
-	Services []struct {
-		Name      string   `json: "name"`
-		Port      int      `json: "port"`
-		Endpoints []string `json: "endpoints"`
-	} `json:"service"`
-}
-
-// ConfigSourceFile periodically reads service configurations in JSON from a file, and sends the services and endpoints defined in the file to the specified channels.
-type ConfigSourceFile struct {
-	serviceChannel   chan ServiceUpdate
-	endpointsChannel chan EndpointsUpdate
-	filename         string
-}
-
-// NewConfigSourceFile creates a new ConfigSourceFile and let it immediately runs the created ConfigSourceFile in a goroutine.
-func NewConfigSourceFile(filename string, serviceChannel chan ServiceUpdate, endpointsChannel chan EndpointsUpdate) ConfigSourceFile {
-	config := ConfigSourceFile{
-		filename:         filename,
-		serviceChannel:   serviceChannel,
-		endpointsChannel: endpointsChannel,
-	}
-	go config.Run()
-	return config
-}
-
-// Run begins watching the config file.
-func (s ConfigSourceFile) Run() {
-	glog.V(1).Infof("Watching file %s", s.filename)
-	var lastData []byte
-	var lastServices []api.Service
-	var lastEndpoints []api.Endpoints
-
-	sleep := 5 * time.Second
-	// Used to avoid spamming the error log file, makes error logging edge triggered.
-	hadSuccess := true
-	for {
-		data, err := ioutil.ReadFile(s.filename)
-		if err != nil {
-			msg := fmt.Sprintf("Couldn't read file: %s : %v", s.filename, err)
-			if hadSuccess {
-				glog.Error(msg)
-			} else {
-				glog.V(1).Info(msg)
-			}
-			hadSuccess = false
-			time.Sleep(sleep)
-			continue
-		}
-		hadSuccess = true
-
-		if bytes.Equal(lastData, data) {
-			time.Sleep(sleep)
-			continue
-		}
-		lastData = data
-
-		config := &serviceConfig{}
-		if err = json.Unmarshal(data, config); err != nil {
-			glog.Errorf("Couldn't unmarshal configuration from file : %s %v", data, err)
-			continue
-		}
-		// Ok, we have a valid configuration, send to channel for
-		// rejiggering.
-		newServices := make([]api.Service, len(config.Services))
-		newEndpoints := make([]api.Endpoints, len(config.Services))
-		for i, service := range config.Services {
-			newServices[i] = api.Service{TypeMeta: api.TypeMeta{ID: service.Name}, Port: service.Port}
-			newEndpoints[i] = api.Endpoints{TypeMeta: api.TypeMeta{ID: service.Name}, Endpoints: service.Endpoints}
-		}
-		if !reflect.DeepEqual(lastServices, newServices) {
-			serviceUpdate := ServiceUpdate{Op: SET, Services: newServices}
-			s.serviceChannel <- serviceUpdate
-			lastServices = newServices
-		}
-		if !reflect.DeepEqual(lastEndpoints, newEndpoints) {
-			endpointsUpdate := EndpointsUpdate{Op: SET, Endpoints: newEndpoints}
-			s.endpointsChannel <- endpointsUpdate
-			lastEndpoints = newEndpoints
-		}
-
-		time.Sleep(sleep)
-	}
-}