Added support to restore versions in object details (#1181)

Signed-off-by: Benjamin Perez <benjamin@bexsoft.net>

restapi/client.go

@@ -74,6 +74,7 @@ type MinioClient interface {
 	getObjectLockConfig(ctx context.Context, bucketName string) (lock string, mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error)
 	getLifecycleRules(ctx context.Context, bucketName string) (lifecycle *lifecycle.Configuration, err error)
 	setBucketLifecycle(ctx context.Context, bucketName string, config *lifecycle.Configuration) error
+	copyObject(ctx context.Context, dst minio.CopyDestOptions, src minio.CopySrcOptions) (minio.UploadInfo, error)
 }
 
 // Interface implementation
@@ -195,6 +196,10 @@ func (c minioClient) setBucketLifecycle(ctx context.Context, bucketName string,
 	return c.client.SetBucketLifecycle(ctx, bucketName, config)
 }
 
+func (c minioClient) copyObject(ctx context.Context, dst minio.CopyDestOptions, src minio.CopySrcOptions) (minio.UploadInfo, error) {
+	return c.client.CopyObject(ctx, dst, src)
+}
+
 // MCClient interface with all functions to be implemented
 // by mock when testing, it should include all mc/S3Client respective api calls
 // that are used within this project.

restapi/embedded_spec.go

@@ -1295,6 +1295,46 @@ func init() {
         }
       }
     },
+    "/buckets/{bucket_name}/objects/restore": {
+      "put": {
+        "tags": [
+          "UserAPI"
+        ],
+        "summary": "Restore Object to a selected version",
+        "operationId": "PutObjectRestore",
+        "parameters": [
+          {
+            "type": "string",
+            "name": "bucket_name",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "name": "prefix",
+            "in": "query",
+            "required": true
+          },
+          {
+            "type": "string",
+            "name": "version_id",
+            "in": "query",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A successful response."
+          },
+          "default": {
+            "description": "Generic error response.",
+            "schema": {
+              "$ref": "#/definitions/error"
+            }
+          }
+        }
+      }
+    },
     "/buckets/{bucket_name}/objects/retention": {
       "put": {
         "tags": [
@@ -6956,6 +6996,46 @@ func init() {
         }
       }
     },
+    "/buckets/{bucket_name}/objects/restore": {
+      "put": {
+        "tags": [
+          "UserAPI"
+        ],
+        "summary": "Restore Object to a selected version",
+        "operationId": "PutObjectRestore",
+        "parameters": [
+          {
+            "type": "string",
+            "name": "bucket_name",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "name": "prefix",
+            "in": "query",
+            "required": true
+          },
+          {
+            "type": "string",
+            "name": "version_id",
+            "in": "query",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A successful response."
+          },
+          "default": {
+            "description": "Generic error response.",
+            "schema": {
+              "$ref": "#/definitions/error"
+            }
+          }
+        }
+      }
+    },
     "/buckets/{bucket_name}/objects/retention": {
       "put": {
         "tags": [

restapi/operations/console_api.go

@@ -290,6 +290,9 @@ func NewConsoleAPI(spec *loads.Document) *ConsoleAPI {
 		UserAPIPutObjectLegalHoldHandler: user_api.PutObjectLegalHoldHandlerFunc(func(params user_api.PutObjectLegalHoldParams, principal *models.Principal) middleware.Responder {
 			return middleware.NotImplemented("operation user_api.PutObjectLegalHold has not yet been implemented")
 		}),
+		UserAPIPutObjectRestoreHandler: user_api.PutObjectRestoreHandlerFunc(func(params user_api.PutObjectRestoreParams, principal *models.Principal) middleware.Responder {
+			return middleware.NotImplemented("operation user_api.PutObjectRestore has not yet been implemented")
+		}),
 		UserAPIPutObjectRetentionHandler: user_api.PutObjectRetentionHandlerFunc(func(params user_api.PutObjectRetentionParams, principal *models.Principal) middleware.Responder {
 			return middleware.NotImplemented("operation user_api.PutObjectRetention has not yet been implemented")
 		}),
@@ -564,6 +567,8 @@ type ConsoleAPI struct {
 	AdminAPIProfilingStopHandler admin_api.ProfilingStopHandler
 	// UserAPIPutObjectLegalHoldHandler sets the operation handler for the put object legal hold operation
 	UserAPIPutObjectLegalHoldHandler user_api.PutObjectLegalHoldHandler
+	// UserAPIPutObjectRestoreHandler sets the operation handler for the put object restore operation
+	UserAPIPutObjectRestoreHandler user_api.PutObjectRestoreHandler
 	// UserAPIPutObjectRetentionHandler sets the operation handler for the put object retention operation
 	UserAPIPutObjectRetentionHandler user_api.PutObjectRetentionHandler
 	// UserAPIPutObjectTagsHandler sets the operation handler for the put object tags operation
@@ -922,6 +927,9 @@ func (o *ConsoleAPI) Validate() error {
 	if o.UserAPIPutObjectLegalHoldHandler == nil {
 		unregistered = append(unregistered, "user_api.PutObjectLegalHoldHandler")
 	}
+	if o.UserAPIPutObjectRestoreHandler == nil {
+		unregistered = append(unregistered, "user_api.PutObjectRestoreHandler")
+	}
 	if o.UserAPIPutObjectRetentionHandler == nil {
 		unregistered = append(unregistered, "user_api.PutObjectRetentionHandler")
 	}
@@ -1396,6 +1404,10 @@ func (o *ConsoleAPI) initHandlerCache() {
 	if o.handlers["PUT"] == nil {
 		o.handlers["PUT"] = make(map[string]http.Handler)
 	}
+	o.handlers["PUT"]["/buckets/{bucket_name}/objects/restore"] = user_api.NewPutObjectRestore(o.context, o.UserAPIPutObjectRestoreHandler)
+	if o.handlers["PUT"] == nil {
+		o.handlers["PUT"] = make(map[string]http.Handler)
+	}
 	o.handlers["PUT"]["/buckets/{bucket_name}/objects/retention"] = user_api.NewPutObjectRetention(o.context, o.UserAPIPutObjectRetentionHandler)
 	if o.handlers["PUT"] == nil {
 		o.handlers["PUT"] = make(map[string]http.Handler)

restapi/operations/user_api/put_object_restore.go

@@ -0,0 +1,88 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2021 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+package user_api
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime/middleware"
+
+	"github.com/minio/console/models"
+)
+
+// PutObjectRestoreHandlerFunc turns a function with the right signature into a put object restore handler
+type PutObjectRestoreHandlerFunc func(PutObjectRestoreParams, *models.Principal) middleware.Responder
+
+// Handle executing the request and returning a response
+func (fn PutObjectRestoreHandlerFunc) Handle(params PutObjectRestoreParams, principal *models.Principal) middleware.Responder {
+	return fn(params, principal)
+}
+
+// PutObjectRestoreHandler interface for that can handle valid put object restore params
+type PutObjectRestoreHandler interface {
+	Handle(PutObjectRestoreParams, *models.Principal) middleware.Responder
+}
+
+// NewPutObjectRestore creates a new http.Handler for the put object restore operation
+func NewPutObjectRestore(ctx *middleware.Context, handler PutObjectRestoreHandler) *PutObjectRestore {
+	return &PutObjectRestore{Context: ctx, Handler: handler}
+}
+
+/* PutObjectRestore swagger:route PUT /buckets/{bucket_name}/objects/restore UserAPI putObjectRestore
+
+Restore Object to a selected version
+
+*/
+type PutObjectRestore struct {
+	Context *middleware.Context
+	Handler PutObjectRestoreHandler
+}
+
+func (o *PutObjectRestore) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	route, rCtx, _ := o.Context.RouteInfo(r)
+	if rCtx != nil {
+		*r = *rCtx
+	}
+	var Params = NewPutObjectRestoreParams()
+	uprinc, aCtx, err := o.Context.Authorize(r, route)
+	if err != nil {
+		o.Context.Respond(rw, r, route.Produces, route, err)
+		return
+	}
+	if aCtx != nil {
+		*r = *aCtx
+	}
+	var principal *models.Principal
+	if uprinc != nil {
+		principal = uprinc.(*models.Principal) // this is really a models.Principal, I promise
+	}
+
+	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
+		o.Context.Respond(rw, r, route.Produces, route, err)
+		return
+	}
+
+	res := o.Handler.Handle(Params, principal) // actually handle the request
+	o.Context.Respond(rw, r, route.Produces, route, res)
+
+}

restapi/operations/user_api/put_object_restore_parameters.go

@@ -0,0 +1,154 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2021 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+package user_api
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/validate"
+)
+
+// NewPutObjectRestoreParams creates a new PutObjectRestoreParams object
+//
+// There are no default values defined in the spec.
+func NewPutObjectRestoreParams() PutObjectRestoreParams {
+
+	return PutObjectRestoreParams{}
+}
+
+// PutObjectRestoreParams contains all the bound params for the put object restore operation
+// typically these are obtained from a http.Request
+//
+// swagger:parameters PutObjectRestore
+type PutObjectRestoreParams struct {
+
+	// HTTP Request Object
+	HTTPRequest *http.Request `json:"-"`
+
+	/*
+	  Required: true
+	  In: path
+	*/
+	BucketName string
+	/*
+	  Required: true
+	  In: query
+	*/
+	Prefix string
+	/*
+	  Required: true
+	  In: query
+	*/
+	VersionID string
+}
+
+// BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
+// for simple values it will use straight method calls.
+//
+// To ensure default values, the struct must have been initialized with NewPutObjectRestoreParams() beforehand.
+func (o *PutObjectRestoreParams) BindRequest(r *http.Request, route *middleware.MatchedRoute) error {
+	var res []error
+
+	o.HTTPRequest = r
+
+	qs := runtime.Values(r.URL.Query())
+
+	rBucketName, rhkBucketName, _ := route.Params.GetOK("bucket_name")
+	if err := o.bindBucketName(rBucketName, rhkBucketName, route.Formats); err != nil {
+		res = append(res, err)
+	}
+
+	qPrefix, qhkPrefix, _ := qs.GetOK("prefix")
+	if err := o.bindPrefix(qPrefix, qhkPrefix, route.Formats); err != nil {
+		res = append(res, err)
+	}
+
+	qVersionID, qhkVersionID, _ := qs.GetOK("version_id")
+	if err := o.bindVersionID(qVersionID, qhkVersionID, route.Formats); err != nil {
+		res = append(res, err)
+	}
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+// bindBucketName binds and validates parameter BucketName from path.
+func (o *PutObjectRestoreParams) bindBucketName(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: true
+	// Parameter is provided by construction from the route
+	o.BucketName = raw
+
+	return nil
+}
+
+// bindPrefix binds and validates parameter Prefix from query.
+func (o *PutObjectRestoreParams) bindPrefix(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	if !hasKey {
+		return errors.Required("prefix", "query", rawData)
+	}
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: true
+	// AllowEmptyValue: false
+
+	if err := validate.RequiredString("prefix", "query", raw); err != nil {
+		return err
+	}
+	o.Prefix = raw
+
+	return nil
+}
+
+// bindVersionID binds and validates parameter VersionID from query.
+func (o *PutObjectRestoreParams) bindVersionID(rawData []string, hasKey bool, formats strfmt.Registry) error {
+	if !hasKey {
+		return errors.Required("version_id", "query", rawData)
+	}
+	var raw string
+	if len(rawData) > 0 {
+		raw = rawData[len(rawData)-1]
+	}
+
+	// Required: true
+	// AllowEmptyValue: false
+
+	if err := validate.RequiredString("version_id", "query", raw); err != nil {
+		return err
+	}
+	o.VersionID = raw
+
+	return nil
+}

restapi/operations/user_api/put_object_restore_responses.go

@@ -0,0 +1,113 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2021 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+package user_api
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime"
+
+	"github.com/minio/console/models"
+)
+
+// PutObjectRestoreOKCode is the HTTP code returned for type PutObjectRestoreOK
+const PutObjectRestoreOKCode int = 200
+
+/*PutObjectRestoreOK A successful response.
+
+swagger:response putObjectRestoreOK
+*/
+type PutObjectRestoreOK struct {
+}
+
+// NewPutObjectRestoreOK creates PutObjectRestoreOK with default headers values
+func NewPutObjectRestoreOK() *PutObjectRestoreOK {
+
+	return &PutObjectRestoreOK{}
+}
+
+// WriteResponse to the client
+func (o *PutObjectRestoreOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.Header().Del(runtime.HeaderContentType) //Remove Content-Type on empty responses
+
+	rw.WriteHeader(200)
+}
+
+/*PutObjectRestoreDefault Generic error response.
+
+swagger:response putObjectRestoreDefault
+*/
+type PutObjectRestoreDefault struct {
+	_statusCode int
+
+	/*
+	  In: Body
+	*/
+	Payload *models.Error `json:"body,omitempty"`
+}
+
+// NewPutObjectRestoreDefault creates PutObjectRestoreDefault with default headers values
+func NewPutObjectRestoreDefault(code int) *PutObjectRestoreDefault {
+	if code <= 0 {
+		code = 500
+	}
+
+	return &PutObjectRestoreDefault{
+		_statusCode: code,
+	}
+}
+
+// WithStatusCode adds the status to the put object restore default response
+func (o *PutObjectRestoreDefault) WithStatusCode(code int) *PutObjectRestoreDefault {
+	o._statusCode = code
+	return o
+}
+
+// SetStatusCode sets the status to the put object restore default response
+func (o *PutObjectRestoreDefault) SetStatusCode(code int) {
+	o._statusCode = code
+}
+
+// WithPayload adds the payload to the put object restore default response
+func (o *PutObjectRestoreDefault) WithPayload(payload *models.Error) *PutObjectRestoreDefault {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the put object restore default response
+func (o *PutObjectRestoreDefault) SetPayload(payload *models.Error) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *PutObjectRestoreDefault) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(o._statusCode)
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
+	}
+}

restapi/operations/user_api/put_object_restore_urlbuilder.go

@@ -0,0 +1,133 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2021 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+package user_api
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"errors"
+	"net/url"
+	golangswaggerpaths "path"
+	"strings"
+)
+
+// PutObjectRestoreURL generates an URL for the put object restore operation
+type PutObjectRestoreURL struct {
+	BucketName string
+
+	Prefix    string
+	VersionID string
+
+	_basePath string
+	// avoid unkeyed usage
+	_ struct{}
+}
+
+// WithBasePath sets the base path for this url builder, only required when it's different from the
+// base path specified in the swagger spec.
+// When the value of the base path is an empty string
+func (o *PutObjectRestoreURL) WithBasePath(bp string) *PutObjectRestoreURL {
+	o.SetBasePath(bp)
+	return o
+}
+
+// SetBasePath sets the base path for this url builder, only required when it's different from the
+// base path specified in the swagger spec.
+// When the value of the base path is an empty string
+func (o *PutObjectRestoreURL) SetBasePath(bp string) {
+	o._basePath = bp
+}
+
+// Build a url path and query string
+func (o *PutObjectRestoreURL) Build() (*url.URL, error) {
+	var _result url.URL
+
+	var _path = "/buckets/{bucket_name}/objects/restore"
+
+	bucketName := o.BucketName
+	if bucketName != "" {
+		_path = strings.Replace(_path, "{bucket_name}", bucketName, -1)
+	} else {
+		return nil, errors.New("bucketName is required on PutObjectRestoreURL")
+	}
+
+	_basePath := o._basePath
+	if _basePath == "" {
+		_basePath = "/api/v1"
+	}
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
+
+	qs := make(url.Values)
+
+	prefixQ := o.Prefix
+	if prefixQ != "" {
+		qs.Set("prefix", prefixQ)
+	}
+
+	versionIDQ := o.VersionID
+	if versionIDQ != "" {
+		qs.Set("version_id", versionIDQ)
+	}
+
+	_result.RawQuery = qs.Encode()
+
+	return &_result, nil
+}
+
+// Must is a helper function to panic when the url builder returns an error
+func (o *PutObjectRestoreURL) Must(u *url.URL, err error) *url.URL {
+	if err != nil {
+		panic(err)
+	}
+	if u == nil {
+		panic("url can't be nil")
+	}
+	return u
+}
+
+// String returns the string representation of the path with query string
+func (o *PutObjectRestoreURL) String() string {
+	return o.Must(o.Build()).String()
+}
+
+// BuildFull builds a full url with scheme, host, path and query string
+func (o *PutObjectRestoreURL) BuildFull(scheme, host string) (*url.URL, error) {
+	if scheme == "" {
+		return nil, errors.New("scheme is required for a full url on PutObjectRestoreURL")
+	}
+	if host == "" {
+		return nil, errors.New("host is required for a full url on PutObjectRestoreURL")
+	}
+
+	base, err := o.Build()
+	if err != nil {
+		return nil, err
+	}
+
+	base.Scheme = scheme
+	base.Host = host
+	return base, nil
+}
+
+// StringFull returns the string representation of a complete url
+func (o *PutObjectRestoreURL) StringFull(scheme, host string) string {
+	return o.Must(o.BuildFull(scheme, host)).String()
+}

restapi/user_buckets_test.go

@@ -47,6 +47,7 @@ var minioSetObjectLockConfigMock func(ctx context.Context, bucketName string, mo
 var minioGetBucketObjectLockConfigMock func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error)
 var minioGetObjectLockConfigMock func(ctx context.Context, bucketName string) (lock string, mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error)
 var minioSetVersioningMock func(ctx context.Context, state string) *probe.Error
+var minioCopyObjectMock func(ctx context.Context, dst minio.CopyDestOptions, src minio.CopySrcOptions) (minio.UploadInfo, error)
 
 // Define a mock struct of minio Client interface implementation
 type minioClientMock struct {
@@ -100,6 +101,10 @@ func (mc minioClientMock) getObjectLockConfig(ctx context.Context, bucketName st
 	return minioGetObjectLockConfigMock(ctx, bucketName)
 }
 
+func (mc minioClientMock) copyObject(ctx context.Context, dst minio.CopyDestOptions, src minio.CopySrcOptions) (minio.UploadInfo, error) {
+	return minioCopyObjectMock(ctx, dst, src)
+}
+
 func (c s3ClientMock) setVersioning(ctx context.Context, state string) *probe.Error {
 	return minioSetVersioningMock(ctx, state)
 }

restapi/user_objects.go

@@ -178,6 +178,13 @@ func registerObjectsHandlers(api *operations.ConsoleAPI) {
 		}
 		return user_api.NewPutObjectTagsOK()
 	})
+	//Restore file version
+	api.UserAPIPutObjectRestoreHandler = user_api.PutObjectRestoreHandlerFunc(func(params user_api.PutObjectRestoreParams, session *models.Principal) middleware.Responder {
+		if err := getPutObjectRestoreResponse(session, params); err != nil {
+			return user_api.NewPutObjectRestoreDefault(int(err.Code)).WithPayload(err)
+		}
+		return user_api.NewPutObjectRestoreOK()
+	})
 }
 
 // getListObjectsResponse returns a list of objects
@@ -762,6 +769,63 @@ func putObjectTags(ctx context.Context, client MinioClient, bucketName, prefix,
 	return client.putObjectTagging(ctx, bucketName, prefix, otags, opt)
 }
 
+// Restore Object Version
+func getPutObjectRestoreResponse(session *models.Principal, params user_api.PutObjectRestoreParams) *models.Error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*20)
+	defer cancel()
+	mClient, err := newMinioClient(session)
+	if err != nil {
+		return prepareError(err)
+	}
+	// create a minioClient interface implementation
+	// defining the client to be used
+	minioClient := minioClient{client: mClient}
+
+	var prefix string
+	if params.Prefix != "" {
+		encodedPrefix := SanitizeEncodedPrefix(params.Prefix)
+		decodedPrefix, err := base64.StdEncoding.DecodeString(encodedPrefix)
+		if err != nil {
+			return prepareError(err)
+		}
+		prefix = string(decodedPrefix)
+	}
+
+	err = restoreObject(ctx, minioClient, params.BucketName, prefix, params.VersionID)
+	if err != nil {
+		return prepareError(err)
+	}
+	return nil
+}
+
+func restoreObject(ctx context.Context, client MinioClient, bucketName, prefix, versionID string) error {
+	// Select required version
+	srcOpts := minio.CopySrcOptions{
+		Bucket:    bucketName,
+		Object:    prefix,
+		VersionID: versionID,
+	}
+
+	// Destination object, same as current bucket
+	replaceMetadata := make(map[string]string)
+	replaceMetadata["copy-source"] = versionID
+
+	dstOpts := minio.CopyDestOptions{
+		Bucket:       bucketName,
+		Object:       prefix,
+		UserMetadata: replaceMetadata,
+	}
+
+	// Copy object call
+	_, err := client.copyObject(ctx, dstOpts, srcOpts)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // newClientURL returns an abstracted URL for filesystems and object storage.
 func newClientURL(urlStr string) *mc.ClientURL {
 	scheme, rest := getScheme(urlStr)