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main.go
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main.go
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package main
import (
"crypto/md5"
"crypto/rand"
"encoding/base64"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"io"
"math"
"net/http"
"os"
"strconv"
"strings"
"time"
"github.com/coreos/etcd/client"
"github.com/pivotal-cf/brokerapi"
"github.com/pivotal-golang/lager"
"golang.org/x/net/context"
oshandler "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/handler"
bsiapi "github.com/openshift/origin/backingserviceinstance/api/v1"
"github.com/asiainfoLDP/datafoundry_servicebroker_openshift/handler"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/cassandra"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/etcd"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/kafka"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/kettle"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/nifi"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/pyspider"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/rabbitmq"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/redis"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/spark"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/storm"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/tensorflow"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/zookeeper"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/elasticsearch_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/etcd-pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/kafka_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/mongo_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/neo4j_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/rabbitmq_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/redis_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/storm_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/zookeeper_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/redissingle_pvc"
_ "github.com/asiainfoLDP/datafoundry_servicebroker_openshift/servicebroker/storm_external"
)
type myServiceBroker struct {
}
type serviceInfo struct {
Service_name string `json:"service_name"`
Plan_name string `json:"plan_name"`
Url string `json:"url"`
Admin_user string `json:"admin_user,omitempty"`
Admin_password string `json:"admin_password,omitempty"`
Database string `json:"database,omitempty"`
User string `json:"user"`
Password string `json:"password"`
}
type myCredentials struct {
Uri string `json:"uri"`
Hostname string `json:"host"`
Port string `json:"port"`
Username string `json:"username"`
Password string `json:"password"`
Name string `json:"name,omitempty"`
}
const G_VolumeSize = "volumeSize"
func (myBroker *myServiceBroker) Services() []brokerapi.Service {
/*
//free := true
paid := false
return []brokerapi.Service{
brokerapi.Service{
ID : "5E397661-1385-464A-8DB7-9C4DF8CC0662",
Name : "etcd_openshift",
Description : "etcd service",
Bindable : true,
Tags : []string{"etcd"},
PlanUpdatable : false,
Plans : []brokerapi.ServicePlan{
brokerapi.ServicePlan{
ID : "204F8288-F8D9-4806-8661-EB48D94504B3",
Name : "standalone",
Description : "each user has a standalone etcd cluster",
Free : &paid,
Metadata : &brokerapi.ServicePlanMetadata{
DisplayName : "Big Bunny",
Bullets : []string{"20 GB of Disk","20 connections"},
Costs : []brokerapi.ServiceCost{
brokerapi.ServiceCost{
Amount : map[string]float64{"usd":99.0,"eur":49.0},
Unit : "MONTHLY",
},
},
},
},
},
Metadata : &brokerapi.ServiceMetadata{
DisplayName : "etcd",
ImageUrl : "https://coreos.com/assets/images/media/etcd2-0.png",
LongDescription : "Managed, highly available etcd clusters in the cloud",
ProviderDisplayName : "Asiainfo BDX LDP",
DocumentationUrl : "https://coreos.com/etcd/docs/latest",
SupportUrl : "https://coreos.com/",
},
DashboardClient : &brokerapi.ServiceDashboardClient{},
},
}
*/
//初始化一系列所需要的结构体，好累啊
myServices := []brokerapi.Service{}
myService := brokerapi.Service{}
myPlans := []brokerapi.ServicePlan{}
myPlan := brokerapi.ServicePlan{}
var myPlanfree bool
//todo还需要考虑对于service和plan的隐藏参数，status，比如可以用，不可用，已经删除等。删除应该是软删除，后两者不予以显示，前者表示还有数据
//获取catalog信息
resp, err := etcdapi.Get(context.Background(), "/servicebroker/"+servcieBrokerName+"/catalog", &client.GetOptions{Recursive: true}) //改为环境变量
if err != nil {
logger.Error("Can not get catalog information from etcd", err) //所有这些出错消息最好命名为常量，放到开始的时候
return []brokerapi.Service{}
} else {
logger.Debug("Successful get catalog information from etcd. NodeInfo is " + resp.Node.Key)
}
for i := 0; i < len(resp.Node.Nodes); i++ {
//为旗下发现的每一个service进行迭代
logger.Debug("Start to Parse Service " + resp.Node.Nodes[i].Key)
//在下一级循环外设置id，因为他是目录名字，注意，如果按照这个逻辑，id一定要是uuid，中间一定不能有目录符号"/"
myService.ID = strings.Split(resp.Node.Nodes[i].Key, "/")[len(strings.Split(resp.Node.Nodes[i].Key, "/"))-1]
//开始取service级别除了ID以外的其他参数
for j := 0; j < len(resp.Node.Nodes[i].Nodes); j++ {
if !resp.Node.Nodes[i].Nodes[j].Dir {
switch strings.ToLower(resp.Node.Nodes[i].Nodes[j].Key) {
case strings.ToLower(resp.Node.Nodes[i].Key) + "/name":
myService.Name = resp.Node.Nodes[i].Nodes[j].Value
case strings.ToLower(resp.Node.Nodes[i].Key) + "/description":
myService.Description = resp.Node.Nodes[i].Nodes[j].Value
case strings.ToLower(resp.Node.Nodes[i].Key) + "/bindable":
myService.Bindable, _ = strconv.ParseBool(resp.Node.Nodes[i].Nodes[j].Value)
case strings.ToLower(resp.Node.Nodes[i].Key) + "/tags":
myService.Tags = strings.Split(resp.Node.Nodes[i].Nodes[j].Value, ",")
case strings.ToLower(resp.Node.Nodes[i].Key) + "/planupdatable":
myService.PlanUpdatable, _ = strconv.ParseBool(resp.Node.Nodes[i].Nodes[j].Value)
case strings.ToLower(resp.Node.Nodes[i].Key) + "/metadata":
json.Unmarshal([]byte(resp.Node.Nodes[i].Nodes[j].Value), &myService.Metadata)
}
} else if strings.HasSuffix(strings.ToLower(resp.Node.Nodes[i].Nodes[j].Key), "plan") {
//开始解析套餐目录中的套餐计划plan。上述判断也不是太严谨，比如有目录如果是xxxxplan怎么办？
for k := 0; k < len(resp.Node.Nodes[i].Nodes[j].Nodes); k++ {
logger.Debug("Start to Parse Plan " + resp.Node.Nodes[i].Nodes[j].Nodes[k].Key)
myPlan.ID = strings.Split(resp.Node.Nodes[i].Nodes[j].Nodes[k].Key, "/")[len(strings.Split(resp.Node.Nodes[i].Nodes[j].Nodes[k].Key, "/"))-1]
for n := 0; n < len(resp.Node.Nodes[i].Nodes[j].Nodes[k].Nodes); n++ {
switch strings.ToLower(resp.Node.Nodes[i].Nodes[j].Nodes[k].Nodes[n].Key) {
case strings.ToLower(resp.Node.Nodes[i].Nodes[j].Nodes[k].Key) + "/name":
myPlan.Name = resp.Node.Nodes[i].Nodes[j].Nodes[k].Nodes[n].Value
case strings.ToLower(resp.Node.Nodes[i].Nodes[j].Nodes[k].Key) + "/description":
myPlan.Description = resp.Node.Nodes[i].Nodes[j].Nodes[k].Nodes[n].Value
case strings.ToLower(resp.Node.Nodes[i].Nodes[j].Nodes[k].Key) + "/free":
//这里没有搞懂为什么brokerapi里面的这个bool要定义为传指针的模式
myPlanfree, _ = strconv.ParseBool(resp.Node.Nodes[i].Nodes[j].Nodes[k].Nodes[n].Value)
myPlan.Free = brokerapi.FreeValue(myPlanfree)
case strings.ToLower(resp.Node.Nodes[i].Nodes[j].Nodes[k].Key) + "/metadata":
json.Unmarshal([]byte(resp.Node.Nodes[i].Nodes[j].Nodes[k].Nodes[n].Value), &myPlan.Metadata)
}
}
//装配plan需要返回的值，按照有多少个plan往里面装
myPlans = append(myPlans, myPlan)
//重置myPlan
myPlan = brokerapi.ServicePlan{}
}
//将装配好的Plan对象赋值给Service
myService.Plans = myPlans
//重置myPlans
myPlans = []brokerapi.ServicePlan{}
}
}
//装配catalog需要返回的值，按照有多少个服务往里面装
myServices = append(myServices, myService)
//重置服务变量
myService = brokerapi.Service{}
}
return myServices
}
func (myBroker *myServiceBroker) Provision(
instanceID string,
details brokerapi.ProvisionDetails,
asyncAllowed bool,
) (brokerapi.ProvisionedServiceSpec, error) {
//初始化
var provsiondetail brokerapi.ProvisionedServiceSpec
var myServiceInfo handler.ServiceInfo
//判断实例是否已经存在，如果存在就报错
resp, err := etcdget("/servicebroker/" + servcieBrokerName + "/instance") //改为环境变量
if err != nil {
logger.Error("Can't connet to etcd", err)
return brokerapi.ProvisionedServiceSpec{}, errors.New("Can't connet to etcd")
}
for i := 0; i < len(resp.Node.Nodes); i++ {
if resp.Node.Nodes[i].Dir && strings.HasSuffix(resp.Node.Nodes[i].Key, instanceID) {
logger.Info("ErrInstanceAlreadyExists")
return brokerapi.ProvisionedServiceSpec{}, brokerapi.ErrInstanceAlreadyExists
}
}
//判断servcie_id和plan_id是否正确
service_name := findServiceNameInCatalog(details.ServiceID)
plan_name := findServicePlanNameInCatalog(details.ServiceID, details.PlanID)
//todo 应该修改service broker添加一个用户输入出错的返回，而不是500
if service_name == "" || plan_name == "" {
logger.Info("Service_id or plan_id not correct!!")
return brokerapi.ProvisionedServiceSpec{}, errors.New("Service_id or plan_id not correct!!")
}
//是否要检查service和plan的status是否允许创建 todo
//生成具体的handler对象
myHandler, err := handler.New(service_name + "_" + plan_name)
//没有找到具体的handler，这里如果没有找到具体的handler不是由于用户输入的，是不对的，报500错误
if err != nil {
logger.Error("Can not found handler for service "+service_name+" plan "+plan_name, err)
return brokerapi.ProvisionedServiceSpec{}, errors.New("Internal Error!!")
}
volumeSize, connections, err := findServicePlanInfo(
details.ServiceID, details.PlanID, details.Parameters, false)
if err != nil {
logger.Error("findServicePlanInfo service "+service_name+" plan "+plan_name, err)
return brokerapi.ProvisionedServiceSpec{}, errors.New("Internal Error!!")
}
planInfo := handler.PlanInfo{
Volume_size: volumeSize,
Connections: connections,
//Customize: customization,
}
//volumeSize, err = getVolumeSize(details, planInfo)
//if err != nil {
// logger.Error("getVolumeSize service "+service_name+" plan "+plan_name, err)
// return brokerapi.ProvisionedServiceSpec{}, errors.New("Internal Error!!")
//} else {
// planInfo.Volume_size = volumeSize
// logger.Debug("getVolumeSize: " + strconv.Itoa(volumeSize) + " service " + service_name + " plan " + plan_name)
//}
etcdSaveResult := make(chan error, 1)
//执行handler中的命令
provsiondetail, myServiceInfo, err = myHandler.DoProvision(etcdSaveResult, instanceID, details, planInfo, asyncAllowed)
//如果出错
if err != nil {
etcdSaveResult <- errors.New("DoProvision Error!")
logger.Error("Error do handler for service "+service_name+" plan "+plan_name, err)
return brokerapi.ProvisionedServiceSpec{}, errors.New("Internal Error!!")
}
//为隐藏属性添加上必要的变量
myServiceInfo.Service_name = service_name
myServiceInfo.Plan_name = plan_name
//写入etcd 话说如果这个时候写入失败，那不就出现数据不一致的情况了么！todo
//先创建instanceid目录
_, err = etcdapi.Set(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, "", &client.SetOptions{Dir: true}) //todo这些要么是常量，要么应该用环境变量
if err != nil {
etcdSaveResult <- errors.New("etcdapi.Set instance Error!")
logger.Error("Can not create instance "+instanceID+" in etcd", err) //todo都应该改为日志key
return brokerapi.ProvisionedServiceSpec{}, err
} else {
logger.Debug("Successful create instance "+instanceID+" in etcd", nil)
}
//然后创建一系列属性
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/organization_guid", details.OrganizationGUID)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/space_guid", details.SpaceGUID)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/service_id", details.ServiceID)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/plan_id", details.PlanID)
tmpval, _ := json.Marshal(details.Parameters)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/parameters", string(tmpval))
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/dashboardurl", provsiondetail.DashboardURL)
//存储隐藏信息_info
tmpval, _ = json.Marshal(myServiceInfo)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/_info", string(tmpval))
//创建绑定目录
_, err = etcdapi.Set(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding", "", &client.SetOptions{Dir: true})
if err != nil {
etcdSaveResult <- errors.New("etcdapi.Set binding Error!")
logger.Error("Can not create banding directory of "+instanceID+" in etcd", err) //todo都应该改为日志key
return brokerapi.ProvisionedServiceSpec{}, err
} else {
logger.Debug("Successful create banding directory of "+instanceID+" in etcd", nil)
}
//完成所有操作后，返回DashboardURL和是否异步的标志
logger.Info("Successful create instance " + instanceID)
etcdSaveResult <- nil
return provsiondetail, nil
}
// Update only support volume expanding now.
func (myBroker *myServiceBroker) Update(
instanceID string,
details brokerapi.UpdateDetails,
asyncAllowed bool,
) (brokerapi.IsAsync, error) {
var myServiceInfo handler.ServiceInfo
//判断实例是否已经存在，如果不存在就报错
resp, err := etcdapi.Get(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, &client.GetOptions{Recursive: true})
if err != nil || !resp.Node.Dir {
logger.Error("Can not get instance information from etcd", err)
return brokerapi.IsAsync(false), brokerapi.ErrInstanceDoesNotExist
} else {
logger.Debug("Successful get instance information from etcd. NodeInfo is " + resp.Node.Key)
}
var servcie_id, plan_id string
//从etcd中取得参数。
for i := 0; i < len(resp.Node.Nodes); i++ {
if !resp.Node.Nodes[i].Dir {
switch strings.ToLower(resp.Node.Nodes[i].Key) {
case strings.ToLower(resp.Node.Key) + "/service_id":
servcie_id = resp.Node.Nodes[i].Value
case strings.ToLower(resp.Node.Key) + "/plan_id":
plan_id = resp.Node.Nodes[i].Value
}
}
}
// todo: maybe
// if servcie_id != details.PreviousValues.ServiceID || plan_id != details.PreviousValues.PlanID {
// }
//并且要核对一下detail里面的service_id和plan_id。出错消息现在是500，需要更改一下源代码，以便更改出错代码
if servcie_id != details.ServiceID || plan_id != details.PlanID {
logger.Info("ServiceID or PlanID not correct!!")
return brokerapi.IsAsync(false), errors.New("ServiceID or PlanID not correct!! instanceID " + instanceID)
}
//是否要判断里面有没有绑定啊？todo
//判断servcie_id和plan_id是否正确
service_name := findServiceNameInCatalog(details.ServiceID)
plan_name := findServicePlanNameInCatalog(details.ServiceID, details.PlanID)
//todo 应该修改service broker添加一个用户输入出错的返回，而不是500
if service_name == "" || plan_name == "" {
logger.Info("Service_id or plan_id not correct!!")
return false, errors.New("Service_id or plan_id not correct!!")
}
//是否要检查service和plan的status是否允许创建 todo
//根据存储在etcd中的service_name和plan_name来确定到底调用那一段处理。注意这个时候不能像Provision一样去catalog里面读取了。
//因为这个时候的数据不一定和创建的时候一样，plan等都有可能变化。同样的道理，url，用户名，密码都应该从_info中解码出来
//隐藏属性不得不单独获取
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/_info")
json.Unmarshal([]byte(resp.Node.Value), &myServiceInfo)
//生成具体的handler对象
myHandler, err := handler.New(myServiceInfo.Service_name + "_" + myServiceInfo.Plan_name)
//没有找到具体的handler，这里如果没有找到具体的handler不是由于用户输入的，是不对的，报500错误
if err != nil {
logger.Error("Can not found handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.IsAsync(false), errors.New("Internal Error!!")
}
if len(myServiceInfo.Volumes) == 0 {
reason := "can not get volume info from the old plan."
logger.Info(reason)
return false, errors.New(reason)
}
volumeSize, connections, err := findServicePlanInfo(
details.ServiceID, details.PlanID, details.Parameters, true)
if err != nil {
logger.Error("findServicePlanInfo service "+service_name+" plan "+plan_name, err)
return false, errors.New("Internal Error!!")
}
_ = connections
if volumeSize == myServiceInfo.Volumes[0].Volume_size {
return false, nil
}
if volumeSize < myServiceInfo.Volumes[0].Volume_size {
reason := fmt.Sprintf(
"new volume size %d must be larger than old sizes %d",
volumeSize, myServiceInfo.Volumes[0].Volume_size,
)
logger.Info(reason)
return false, errors.New(reason)
}
planInfo := handler.PlanInfo{
Volume_size: volumeSize,
}
callbackSaveNewInfo := func(serviceInfo *handler.ServiceInfo) error {
//存储隐藏信息_info
tmpval, _ := json.Marshal(myServiceInfo)
_, err := etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/_info", string(tmpval))
return err
}
//执行handler中的命令
err = myHandler.DoUpdate(&myServiceInfo, planInfo, callbackSaveNewInfo, asyncAllowed)
//如果出错
if err != nil {
logger.Error("Error do handler for service "+service_name+" plan "+plan_name, err)
return false, errors.New("Internal Error!!")
}
return true, nil
}
func (myBroker *myServiceBroker) LastOperation(instanceID string) (brokerapi.LastOperation, error) {
// If the broker provisions asynchronously, the Cloud Controller will poll this endpoint
// for the status of the provisioning operation.
var myServiceInfo handler.ServiceInfo
var lastOperation brokerapi.LastOperation
//判断实例是否已经存在，如果不存在就报错
resp, err := etcdapi.Get(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, &client.GetOptions{Recursive: true}) //改为环境变量
if err != nil || !resp.Node.Dir {
logger.Error("Can not get instance information from etcd", err)
return brokerapi.LastOperation{}, brokerapi.ErrInstanceDoesNotExist
} else {
logger.Debug("Successful get instance information from etcd. NodeInfo is " + resp.Node.Key)
}
//隐藏属性不得不单独获取
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/_info")
json.Unmarshal([]byte(resp.Node.Value), &myServiceInfo)
//生成具体的handler对象
myHandler, err := handler.New(myServiceInfo.Service_name + "_" + myServiceInfo.Plan_name)
//没有找到具体的handler，这里如果没有找到具体的handler不是由于用户输入的，是不对的，报500错误
if err != nil {
logger.Error("Can not found handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.LastOperation{}, errors.New("Internal Error!!")
}
//执行handler中的命令
lastOperation, err = myHandler.DoLastOperation(&myServiceInfo)
//如果出错
if err != nil {
logger.Error("Error do handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.LastOperation{}, errors.New("Internal Error!!")
}
//如果一切正常，返回结果
logger.Info("Successful query last operation for service instance" + instanceID)
return lastOperation, nil
}
func (myBroker *myServiceBroker) Deprovision(instanceID string, details brokerapi.DeprovisionDetails, asyncAllowed bool) (brokerapi.IsAsync, error) {
var myServiceInfo handler.ServiceInfo
//判断实例是否已经存在，如果不存在就报错
resp, err := etcdapi.Get(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, &client.GetOptions{Recursive: true})
if err != nil || !resp.Node.Dir {
logger.Error("Can not get instance information from etcd", err)
return brokerapi.IsAsync(false), brokerapi.ErrInstanceDoesNotExist
} else {
logger.Debug("Successful get instance information from etcd. NodeInfo is " + resp.Node.Key)
}
var servcie_id, plan_id string
//从etcd中取得参数。
for i := 0; i < len(resp.Node.Nodes); i++ {
if !resp.Node.Nodes[i].Dir {
switch strings.ToLower(resp.Node.Nodes[i].Key) {
case strings.ToLower(resp.Node.Key) + "/service_id":
servcie_id = resp.Node.Nodes[i].Value
case strings.ToLower(resp.Node.Key) + "/plan_id":
plan_id = resp.Node.Nodes[i].Value
}
}
}
//并且要核对一下detail里面的service_id和plan_id。出错消息现在是500，需要更改一下源代码，以便更改出错代码
if servcie_id != details.ServiceID || plan_id != details.PlanID {
logger.Info("ServiceID or PlanID not correct!!")
return brokerapi.IsAsync(false), errors.New("ServiceID or PlanID not correct!! instanceID " + instanceID)
}
//是否要判断里面有没有绑定啊？todo
//根据存储在etcd中的service_name和plan_name来确定到底调用那一段处理。注意这个时候不能像Provision一样去catalog里面读取了。
//因为这个时候的数据不一定和创建的时候一样，plan等都有可能变化。同样的道理，url，用户名，密码都应该从_info中解码出来
//隐藏属性不得不单独获取
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/_info")
json.Unmarshal([]byte(resp.Node.Value), &myServiceInfo)
//生成具体的handler对象
myHandler, err := handler.New(myServiceInfo.Service_name + "_" + myServiceInfo.Plan_name)
//没有找到具体的handler，这里如果没有找到具体的handler不是由于用户输入的，是不对的，报500错误
if err != nil {
logger.Error("Can not found handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.IsAsync(false), errors.New("Internal Error!!")
}
//执行handler中的命令
isasync, err := myHandler.DoDeprovision(&myServiceInfo, asyncAllowed)
//如果出错
if err != nil {
logger.Error("Error do handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.IsAsync(false), errors.New("Internal Error!!")
}
//然后删除etcd里面的纪录，这里也有可能有不一致的情况
_, err = etcdapi.Delete(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, &client.DeleteOptions{Recursive: true, Dir: true}) //todo这些要么是常量，要么应该用环境变量
if err != nil {
logger.Error("Can not delete instance "+instanceID+" in etcd", err) //todo都应该改为日志key
return brokerapi.IsAsync(false), errors.New("Internal Error!!")
} else {
logger.Debug("Successful delete instance " + instanceID + " in etcd")
}
logger.Info("Successful Deprovision instance " + instanceID)
return isasync, nil
}
func (myBroker *myServiceBroker) Bind(instanceID, bindingID string, details brokerapi.BindDetails) (brokerapi.Binding, error) {
var mycredentials handler.Credentials
var myBinding brokerapi.Binding
//判断实例是否已经存在，如果不存在就报错
resp, err := etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID)
if err != nil || !resp.Node.Dir {
logger.Error("Can not get instance information from etcd", err) //所有这些出错消息最好命名为常量，放到开始的时候
return brokerapi.Binding{}, brokerapi.ErrInstanceDoesNotExist
} else {
logger.Debug("Successful get instance information from etcd. NodeInfo is " + resp.Node.Key)
}
//判断绑定是否存在，如果存在就报错
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/binding")
for i := 0; i < len(resp.Node.Nodes); i++ {
if resp.Node.Nodes[i].Dir && strings.HasSuffix(resp.Node.Nodes[i].Key, bindingID) {
logger.Info("ErrBindingAlreadyExists " + instanceID)
return brokerapi.Binding{}, brokerapi.ErrBindingAlreadyExists
}
}
//对于参数中的service_id和plan_id仅做校验，不再在binding中存储
var servcie_id, plan_id string
//从etcd中取得参数。
resp, err = etcdapi.Get(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, &client.GetOptions{Recursive: true}) //改为环境变量
if err != nil {
logger.Error("Can not get instance information from etcd", err) //所有这些出错消息最好命名为常量，放到开始的时候
return brokerapi.Binding{}, brokerapi.ErrInstanceDoesNotExist
} else {
logger.Debug("Successful get instance information from etcd.")
}
for i := 0; i < len(resp.Node.Nodes); i++ {
if !resp.Node.Nodes[i].Dir {
switch strings.ToLower(resp.Node.Nodes[i].Key) {
case strings.ToLower(resp.Node.Key) + "/service_id":
servcie_id = resp.Node.Nodes[i].Value
case strings.ToLower(resp.Node.Key) + "/plan_id":
plan_id = resp.Node.Nodes[i].Value
}
}
}
//并且要核对一下detail里面的service_id和plan_id。出错消息现在是500，需要更改一下源代码，以便更改出错代码
if servcie_id != details.ServiceID || plan_id != details.PlanID {
logger.Info("ServiceID or PlanID not correct!!")
return brokerapi.Binding{}, errors.New("ServiceID or PlanID not correct!! instanceID " + instanceID)
}
//隐藏属性不得不单独获取。取得当时绑定服务得到信息
var myServiceInfo handler.ServiceInfo
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/_info")
json.Unmarshal([]byte(resp.Node.Value), &myServiceInfo)
//生成具体的handler对象
myHandler, err := handler.New(myServiceInfo.Service_name + "_" + myServiceInfo.Plan_name)
//没有找到具体的handler，这里如果没有找到具体的handler不是由于用户输入的，是不对的，报500错误
if err != nil {
logger.Error("Can not found handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.Binding{}, errors.New("Internal Error!!")
}
//执行handler中的命令
myBinding, mycredentials, err = myHandler.DoBind(&myServiceInfo, bindingID, details)
//如果出错
if err != nil {
logger.Error("Error do handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return brokerapi.Binding{}, err
}
//把信息存储到etcd里面，同样这里有同步性的问题 todo怎么解决呢？
//先创建bindingID目录
_, err = etcdapi.Set(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding/"+bindingID, "", &client.SetOptions{Dir: true}) //todo这些要么是常量，要么应该用环境变量
if err != nil {
logger.Error("Can not create binding "+bindingID+" in etcd", err) //todo都应该改为日志key
return brokerapi.Binding{}, err
} else {
logger.Debug("Successful create binding "+bindingID+" in etcd", nil)
}
//然后创建一系列属性
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding/"+bindingID+"/app_guid", details.AppGUID)
tmpval, _ := json.Marshal(details.Parameters)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding/"+bindingID+"/parameters", string(tmpval))
tmpval, _ = json.Marshal(myBinding)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding/"+bindingID+"/binding", string(tmpval))
//存储隐藏信息_info
tmpval, _ = json.Marshal(mycredentials)
etcdset("/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding/"+bindingID+"/_info", string(tmpval))
logger.Info("Successful create binding " + bindingID)
return myBinding, nil
}
func (myBroker *myServiceBroker) Unbind(instanceID, bindingID string, details brokerapi.UnbindDetails) error {
var mycredentials handler.Credentials
var myServiceInfo handler.ServiceInfo
//判断实例是否已经存在，如果不存在就报错
resp, err := etcdapi.Get(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID, &client.GetOptions{Recursive: true}) //改为环境变量
if err != nil || !resp.Node.Dir {
logger.Error("Can not get instance information from etcd", err)
return brokerapi.ErrInstanceDoesNotExist //这几个错误返回为空，是detele操作的要求吗？
} else {
logger.Debug("Successful get instance information from etcd. NodeInfo is " + resp.Node.Key)
}
var servcie_id, plan_id string
//从etcd中取得参数。
for i := 0; i < len(resp.Node.Nodes); i++ {
if !resp.Node.Nodes[i].Dir {
switch strings.ToLower(resp.Node.Nodes[i].Key) {
case strings.ToLower(resp.Node.Key) + "/service_id":
servcie_id = resp.Node.Nodes[i].Value
case strings.ToLower(resp.Node.Key) + "/plan_id":
plan_id = resp.Node.Nodes[i].Value
}
}
}
//并且要核对一下detail里面的service_id和plan_id。出错消息现在是500，需要更改一下源代码，以便更改出错代码
if servcie_id != details.ServiceID || plan_id != details.PlanID {
logger.Info("ServiceID or PlanID not correct!!")
return errors.New("ServiceID or PlanID not correct!! instanceID " + instanceID)
}
//判断绑定是否存在，如果不存在就报错
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/binding/" + bindingID)
if err != nil || !resp.Node.Dir {
logger.Error("Can not get binding information from etcd", err)
return brokerapi.ErrBindingDoesNotExist //这几个错误返回为空，是detele操作的要求吗？
} else {
logger.Debug("Successful get bingding information from etcd. NodeInfo is " + resp.Node.Key)
}
//根据存储在etcd中的service_name和plan_name来确定到底调用那一段处理。注意这个时候不能像Provision一样去catalog里面读取了。
//因为这个时候的数据不一定和创建的时候一样，plan等都有可能变化。同样的道理，url，用户名，密码都应该从_info中解码出来
//隐藏属性不得不单独获取
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/_info")
json.Unmarshal([]byte(resp.Node.Value), &myServiceInfo)
//隐藏属性不得不单独获取
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/instance/" + instanceID + "/binding/" + bindingID + "/_info")
json.Unmarshal([]byte(resp.Node.Value), &mycredentials)
//生成具体的handler对象
myHandler, err := handler.New(myServiceInfo.Service_name + "_" + myServiceInfo.Plan_name)
//没有找到具体的handler，这里如果没有找到具体的handler不是由于用户输入的，是不对的，报500错误
if err != nil {
logger.Error("Can not found handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return errors.New("Internal Error!!")
}
//执行handler中的命令
err = myHandler.DoUnbind(&myServiceInfo, &mycredentials)
//如果出错
if err != nil {
logger.Error("Error do handler for service "+myServiceInfo.Service_name+" plan "+myServiceInfo.Plan_name, err)
return err
}
//然后删除etcd里面的纪录，这里也有可能有不一致的情况
_, err = etcdapi.Delete(context.Background(), "/servicebroker/"+servcieBrokerName+"/instance/"+instanceID+"/binding/"+bindingID, &client.DeleteOptions{Recursive: true, Dir: true}) //todo这些要么是常量，要么应该用环境变量
if err != nil {
logger.Error("Can not delete binding "+bindingID+" in etcd", err) //todo都应该改为日志key
return errors.New("Can not delete binding " + bindingID + " in etcd")
} else {
logger.Debug("Successful delete binding "+bindingID+" in etcd", nil)
}
logger.Info("Successful delete binding "+bindingID, nil)
return nil
}
//定义工具函数
func etcdget(key string) (*client.Response, error) {
n := 5
RETRY:
resp, err := etcdapi.Get(context.Background(), key, nil)
if err != nil {
logger.Error("Can not get "+key+" from etcd", err)
n--
if n > 0 {
goto RETRY
}
return nil, err
} else {
logger.Debug("Successful get " + key + " from etcd. value is " + resp.Node.Value)
return resp, nil
}
}
func etcdset(key string, value string) (*client.Response, error) {
n := 5
RETRY:
resp, err := etcdapi.Set(context.Background(), key, value, nil)
if err != nil {
logger.Error("Can not set "+key+" from etcd", err)
n--
if n > 0 {
goto RETRY
}
return nil, err
} else {
logger.Debug("Successful set " + key + " from etcd. value is " + value)
return resp, nil
}
}
func findServiceNameInCatalog(service_id string) string {
resp, err := etcdget("/servicebroker/" + servcieBrokerName + "/catalog/" + service_id + "/name")
if err != nil {
return ""
}
return resp.Node.Value
}
func findServicePlanNameInCatalog(service_id, plan_id string) string {
resp, err := etcdget("/servicebroker/" + servcieBrokerName + "/catalog/" + service_id + "/plan/" + plan_id + "/name")
if err != nil {
return ""
}
return resp.Node.Value
}
func findServicePlanInfo(service_id, plan_id string, parameters map[string]interface{}, errorOnInvalidParameter bool) (volumeSize, connections int, err error) {
vsize, conns, customization, err :=
findServicePlanInfoInBullets(service_id, plan_id)
if err != nil {
return
}
// default size is the value in etcd bullets.
fVolumeSize := float64(vsize)
// if input parameter also specifies volume size, then use it.
if interSize, ok := parameters[G_VolumeSize]; !ok {
if errorOnInvalidParameter {
err = errors.New(G_VolumeSize + " parameter is not provided.")
return
}
} else {
if sSize, ok := interSize.(string); !ok {
err = errors.New(G_VolumeSize + " is not string.")
return
} else if fSize, e := strconv.ParseFloat(sSize, 64); e != nil {
err = e
return
} else {
fVolumeSize = math.Floor(fSize + 0.5)
}
}
// try to validate volume size
if cus, ok := customization[G_VolumeSize]; ok {
fVolumeSize = cus.Default + cus.Step*math.Ceil((fVolumeSize-cus.Default)/cus.Step)
if fVolumeSize > cus.Max {
fVolumeSize = cus.Max
}
}
// ...
volumeSize = int(fVolumeSize)
connections = conns
return
}
func findServicePlanInfoInBullets(service_id, plan_id string) (volumeSize, connections int, customization map[string]oshandler.CustomParams, err error) {
resp, err := etcdget("/servicebroker/" + servcieBrokerName + "/catalog/" + service_id + "/plan/" + plan_id + "/metadata")
if err != nil {
return
}
type PlanMetaData struct {
Bullets []string `json:"bullets,omitempty"`
Customize map[string]oshandler.CustomParams `json:"customize,omitempty"`
}
// metadata '{"bullets":["20 GB of Disk","20 connections"],"displayName":"Shared and Free" }'
var meta PlanMetaData
err = json.Unmarshal([]byte(resp.Node.Value), &meta)
if err != nil {
return
}
customization = meta.Customize
for _, info := range meta.Bullets {
info = strings.ToLower(info)
if index := strings.Index(info, " gb of disk"); index > 0 {
volumeSize, err = strconv.Atoi(info[:index])
if err != nil {
return
}
} else if index := strings.Index(info, " connection"); index > 0 {
connections, err = strconv.Atoi(info[:index])
if err != nil {
return
}
}
}
return
}
/*
func getVolumeSize(details brokerapi.ProvisionDetails, planInfo oshandler.PlanInfo) (finalVolumeSize int, err error) {
if planInfo.Customize == nil {
//如果没有Customize, finalVolumeSize默认值 planInfo.Volume_size
finalVolumeSize = planInfo.Volume_size
} else if cus, ok := planInfo.Customize[G_VolumeSize]; ok {
if details.Parameters == nil {
finalVolumeSize = int(cus.Default)
return
}
if _, ok := details.Parameters[G_VolumeSize]; !ok {
err = errors.New("getVolumeSize:idetails.Parameters[volumeSize] not exist")
println(err)
return
}
sSize, ok := details.Parameters[G_VolumeSize].(string)
if !ok {
err = errors.New("getVolumeSize:idetails.Parameters[volumeSize] cannot be converted to string")
println(err)
return
}
fSize, e := strconv.ParseFloat(sSize, 64)
if e != nil {
println("getVolumeSize: input parameter volumeSize :", sSize, e)
err = e
return
}
if fSize > cus.Max {
finalVolumeSize = int(cus.Default)
} else {
finalVolumeSize = int(cus.Default + cus.Step*math.Ceil((fSize-cus.Default)/cus.Step))
}
} else {
finalVolumeSize = planInfo.Volume_size
}
return
}
*/
func getmd5string(s string) string {
h := md5.New()
h.Write([]byte(s))
return hex.EncodeToString(h.Sum(nil))
}
func getguid() string {
b := make([]byte, 48)
if _, err := io.ReadFull(rand.Reader, b); err != nil {
return ""
}
return getmd5string(base64.URLEncoding.EncodeToString(b))
}
func getenv(env string) string {
env_value := os.Getenv(env)
if env_value == "" {
fmt.Println("FATAL: NEED ENV", env)
fmt.Println("Exit...........")
os.Exit(2)
}
fmt.Println("ENV:", env, env_value)
return env_value
}
//定义日志和etcd的全局变量，以及其他变量
var logger lager.Logger
var etcdapi client.KeysAPI
var servcieBrokerName string = "openshift" // also used in init-etcd.sh
var etcdEndPoint, etcdUser, etcdPassword string
var serviceBrokerPort string
var brokerCredentials brokerapi.BrokerCredentials
func main() {
//初始化参数，参数应该从环境变量中获取
var username, password string
//todo参数应该改为从环境变量中获取
//需要以下环境变量
etcdEndPoint = getenv("ETCDENDPOINT") //etcd的路径
etcdUser = getenv("ETCDUSER")
etcdPassword = getenv("ETCDPASSWORD")
serviceBrokerPort = getenv("BROKERPORT") //监听的端口
//初始化日志对象，日志输出到stdout
logger = lager.NewLogger(servcieBrokerName)
logger.RegisterSink(lager.NewWriterSink(os.Stdout, lager.INFO)) //默认日志级别
//初始化etcd客户端
cfg := client.Config{
Endpoints: []string{etcdEndPoint},
Transport: client.DefaultTransport,
// set timeout per request to fail fast when the target endpoint is unavailable
HeaderTimeoutPerRequest: time.Second * 5,
Username: etcdUser,
Password: etcdPassword,
}
c, err := client.New(cfg)
if err != nil {
logger.Error("Can not init ectd client", err)
}
etcdapi = client.NewKeysAPI(c)
//初始化serviceborker对象
serviceBroker := &myServiceBroker{}
//取得用户名和密码
resp, err := etcdget("/servicebroker/" + servcieBrokerName + "/username")
if err != nil {
logger.Error("Can not init username,Progrom Exit!", err)
os.Exit(1)
} else {
username = resp.Node.Value
}
resp, err = etcdget("/servicebroker/" + servcieBrokerName + "/password")
if err != nil {
logger.Error("Can not init password,Progrom Exit!", err)
os.Exit(1)
} else {
password = resp.Node.Value
}
//装配用户名和密码
brokerCredentials := brokerapi.BrokerCredentials{
Username: username,
Password: password,
}