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broker.go
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broker.go
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package main
import (
"context"
"crypto/md5"
"encoding/json"
"fmt"
"strings"
"github.com/pivotal-cf/brokerapi/v7"
"github.com/pivotal-cf/brokerapi/v7/domain"
"github.com/pivotal-cf/brokerapi/v7/domain/apiresponses"
"github.com/teris-io/shortid"
"toolman.org/numbers/stdsize"
)
type broker struct {
services []brokerapi.Service
env brokerConfig
ontapClient *OntapClient
}
type ProvisionParameters struct {
Size string `json:"size"`
}
func (b *broker) Services(context context.Context) ([]brokerapi.Service, error) {
return b.services, nil
}
func (b *broker) Provision(context context.Context, instanceID string, details domain.ProvisionDetails, asyncAllowed bool) (domain.ProvisionedServiceSpec, error) {
if !asyncAllowed {
return domain.ProvisionedServiceSpec{}, apiresponses.ErrAsyncRequired
}
//generate the name
volumeName := generateVolumeName(b.env.VolumeNamePrefix, instanceID)
//get params (sieze only for now)
if details.RawParameters == nil || len(details.RawParameters) == 0 {
return domain.ProvisionedServiceSpec{}, apiresponses.ErrRawParamsInvalid
}
var params ProvisionParameters
err := json.Unmarshal(details.RawParameters, ¶ms)
if err != nil {
return domain.ProvisionedServiceSpec{}, apiresponses.ErrRawParamsInvalid
}
size, err := stdsize.Parse(params.Size)
if err != nil || size < 20971520 {
return domain.ProvisionedServiceSpec{}, fmt.Errorf("Requested volume is smaller than smallest allowed volume")
}
if size > stdsize.Value(b.env.MaxVolumeSizeBytes) {
return domain.ProvisionedServiceSpec{}, fmt.Errorf("Requested volume size exceeds configured maximum volume size. You requested %s, Max is %s", params.Size, b.env.MaxVolumeSize)
}
jobID, err := b.ontapClient.CreateCifsVolume(volumeName, b.env.OntapSvmName, int64(size))
if err != nil {
return domain.ProvisionedServiceSpec{}, fmt.Errorf("Create Volume failed: %s", err)
}
return domain.ProvisionedServiceSpec{
IsAsync: true,
AlreadyExists: false,
DashboardURL: "",
OperationData: jobID,
}, nil
}
func (b *broker) GetInstance(ctx context.Context, instanceID string) (domain.GetInstanceDetailsSpec, error) {
return domain.GetInstanceDetailsSpec{}, fmt.Errorf("Instances are not retrievable")
}
func (b *broker) Deprovision(context context.Context, instanceID string, details brokerapi.DeprovisionDetails, asyncAllowed bool) (domain.DeprovisionServiceSpec, error) {
if !asyncAllowed {
return domain.DeprovisionServiceSpec{}, apiresponses.ErrAsyncRequired
}
name := generateVolumeName(b.env.VolumeNamePrefix, instanceID)
id, err := b.ontapClient.GetVolumeIDByName(name)
if err != nil {
return domain.DeprovisionServiceSpec{}, fmt.Errorf("error lookup volume with name %s", name)
}
jobID, err := b.ontapClient.DeleteVolume(id)
if err != nil {
return domain.DeprovisionServiceSpec{}, nil
}
return domain.DeprovisionServiceSpec{
IsAsync: true,
OperationData: jobID,
}, nil
}
func (b *broker) hash(mountOpts map[string]interface{}) (string, error) {
var (
bytes []byte
err error
)
if bytes, err = json.Marshal(mountOpts); err != nil {
return "", err
}
return fmt.Sprintf("%x", md5.Sum(bytes)), nil
}
func (b *broker) Bind(context context.Context, instanceID, bindingID string, details domain.BindDetails, asyncAllowed bool) (domain.Binding, error) {
volumeName := generateVolumeName(b.env.VolumeNamePrefix, instanceID)
username, _ := shortid.Generate()
password, _ := shortid.Generate()
err := b.ontapClient.CreateCifsUser(username, password, bindingID)
if err != nil {
return domain.Binding{}, fmt.Errorf("CreateCifsUser failed: %s", err)
}
svmId, err := b.ontapClient.GetSvmIdByName(b.env.OntapSvmName)
if err != nil {
return domain.Binding{}, fmt.Errorf("GetSvmIdByName failed: %s", err)
}
err = b.ontapClient.AssignCifsUser(username, svmId, volumeName)
if err != nil {
return domain.Binding{}, fmt.Errorf("AssignCifsUser failed: %s", err)
}
var bindOpts map[string]interface{}
if len(details.RawParameters) > 0 {
if err = json.Unmarshal(details.RawParameters, &bindOpts); err != nil {
return domain.Binding{}, err
}
}
containerPath := fmt.Sprintf("/var/vcap/data/%s", volumeName)
if path, ok := bindOpts["mount"].(string); ok && path != "" {
containerPath = path
}
mountConfig := make(map[string]interface{})
mountConfig["version"] = "3.0"
mountConfig["username"] = username
mountConfig["password"] = password
mountConfig["sec"] = "ntlmssp"
mountConfig["source"] = fmt.Sprintf("//%s/%s", b.env.CifsHostname, volumeName)
return domain.Binding{
Credentials: struct{}{}, // if nil, cloud controller chokes on response
VolumeMounts: []domain.VolumeMount{{
ContainerDir: containerPath,
Mode: "rw",
Driver: "smbdriver",
DeviceType: "shared",
Device: domain.SharedDevice{
VolumeId: instanceID,
MountConfig: mountConfig,
},
}},
}, nil
}
func (b *broker) GetBinding(ctx context.Context, instanceID, bindingID string) (domain.GetBindingSpec, error) {
return domain.GetBindingSpec{}, fmt.Errorf("Bindings are not retrievable")
}
func (b *broker) Unbind(context context.Context, instanceID, bindingID string, details domain.UnbindDetails, asyncAllowed bool) (domain.UnbindSpec, error) {
user, err := b.ontapClient.GetCifsUserByFullname(b.env.OntapSvmName, bindingID)
if err != nil {
if strings.Contains(err.Error(), "status 255") {
return domain.UnbindSpec{}, nil //If user not found unbind was done before but CF didn't register it.
}
return domain.UnbindSpec{}, fmt.Errorf("GetCifsUserByFullname failed: %s", err)
}
err = b.ontapClient.DeleteCifsUser(user)
if err != nil {
return domain.UnbindSpec{}, fmt.Errorf("DeleteCifsUser failed: %s", err)
}
return domain.UnbindSpec{}, nil
}
func (b *broker) Update(context context.Context, instanceID string, details domain.UpdateDetails, asyncAllowed bool) (domain.UpdateServiceSpec, error) {
return domain.UpdateServiceSpec{}, nil
}
func (b *broker) LastOperation(context context.Context, instanceID string, details domain.PollDetails) (domain.LastOperation, error) {
status, err := b.ontapClient.GetJobStatus(details.OperationData)
if err != nil {
fmt.Println(err)
return domain.LastOperation{
State: domain.Failed,
Description: err.Error(),
}, fmt.Errorf("Getting status for job %s failed", details.OperationData)
}
var jobStatus JobStatus
json.Unmarshal(status.body, &jobStatus)
return domain.LastOperation{
State: statusMap[jobStatus.State],
Description: jobStatus.Description,
}, nil
}
func (b *broker) LastBindingOperation(ctx context.Context, instanceID, bindingID string, details domain.PollDetails) (domain.LastOperation, error) {
return domain.LastOperation{}, nil
}