Add Get Bucket Retention Config Api (#520)

restapi/client.go

@@ -69,6 +69,7 @@ type MinioClient interface {
 	putObjectTagging(ctx context.Context, bucketName, objectName string, otags *tags.Tags, opts minio.PutObjectTaggingOptions) error
 	getObjectTagging(ctx context.Context, bucketName, objectName string, opts minio.GetObjectTaggingOptions) (*tags.Tags, error)
 	setObjectLockConfig(ctx context.Context, bucketName string, mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit) error
+	getBucketObjectLockConfig(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error)
 }
 
 // Interface implementation
@@ -174,6 +175,10 @@ func (c minioClient) setObjectLockConfig(ctx context.Context, bucketName string,
 	return c.client.SetObjectLockConfig(ctx, bucketName, mode, validity, unit)
 }
 
+func (c minioClient) getBucketObjectLockConfig(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+	return c.client.GetBucketObjectLockConfig(ctx, bucketName)
+}
+
 // 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

@@ -940,6 +940,35 @@ func init() {
       }
     },
     "/buckets/{bucket_name}/retention": {
+      "get": {
+        "tags": [
+          "UserAPI"
+        ],
+        "summary": "Get Bucket's retention config",
+        "operationId": "GetBucketRetentionConfig",
+        "parameters": [
+          {
+            "type": "string",
+            "name": "bucket_name",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/getBucketRetentionConfig"
+            }
+          },
+          "default": {
+            "description": "Generic error response.",
+            "schema": {
+              "$ref": "#/definitions/error"
+            }
+          }
+        }
+      },
       "put": {
         "tags": [
           "UserAPI"
@@ -3563,6 +3592,21 @@ func init() {
         }
       }
     },
+    "getBucketRetentionConfig": {
+      "type": "object",
+      "properties": {
+        "mode": {
+          "$ref": "#/definitions/objectRetentionMode"
+        },
+        "unit": {
+          "$ref": "#/definitions/objectRetentionUnit"
+        },
+        "validity": {
+          "type": "integer",
+          "format": "int32"
+        }
+      }
+    },
     "group": {
       "type": "object",
       "properties": {
@@ -6020,6 +6064,35 @@ func init() {
       }
     },
     "/buckets/{bucket_name}/retention": {
+      "get": {
+        "tags": [
+          "UserAPI"
+        ],
+        "summary": "Get Bucket's retention config",
+        "operationId": "GetBucketRetentionConfig",
+        "parameters": [
+          {
+            "type": "string",
+            "name": "bucket_name",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/getBucketRetentionConfig"
+            }
+          },
+          "default": {
+            "description": "Generic error response.",
+            "schema": {
+              "$ref": "#/definitions/error"
+            }
+          }
+        }
+      },
       "put": {
         "tags": [
           "UserAPI"
@@ -9166,6 +9239,21 @@ func init() {
         }
       }
     },
+    "getBucketRetentionConfig": {
+      "type": "object",
+      "properties": {
+        "mode": {
+          "$ref": "#/definitions/objectRetentionMode"
+        },
+        "unit": {
+          "$ref": "#/definitions/objectRetentionUnit"
+        },
+        "validity": {
+          "type": "integer",
+          "format": "int32"
+        }
+      }
+    },
     "group": {
       "type": "object",
       "properties": {

restapi/operations/console_api.go

@@ -151,6 +151,9 @@ func NewConsoleAPI(spec *loads.Document) *ConsoleAPI {
 		UserAPIGetBucketReplicationHandler: user_api.GetBucketReplicationHandlerFunc(func(params user_api.GetBucketReplicationParams, principal *models.Principal) middleware.Responder {
 			return middleware.NotImplemented("operation user_api.GetBucketReplication has not yet been implemented")
 		}),
+		UserAPIGetBucketRetentionConfigHandler: user_api.GetBucketRetentionConfigHandlerFunc(func(params user_api.GetBucketRetentionConfigParams, principal *models.Principal) middleware.Responder {
+			return middleware.NotImplemented("operation user_api.GetBucketRetentionConfig has not yet been implemented")
+		}),
 		UserAPIGetBucketVersioningHandler: user_api.GetBucketVersioningHandlerFunc(func(params user_api.GetBucketVersioningParams, principal *models.Principal) middleware.Responder {
 			return middleware.NotImplemented("operation user_api.GetBucketVersioning has not yet been implemented")
 		}),
@@ -423,6 +426,8 @@ type ConsoleAPI struct {
 	UserAPIGetBucketQuotaHandler user_api.GetBucketQuotaHandler
 	// UserAPIGetBucketReplicationHandler sets the operation handler for the get bucket replication operation
 	UserAPIGetBucketReplicationHandler user_api.GetBucketReplicationHandler
+	// UserAPIGetBucketRetentionConfigHandler sets the operation handler for the get bucket retention config operation
+	UserAPIGetBucketRetentionConfigHandler user_api.GetBucketRetentionConfigHandler
 	// UserAPIGetBucketVersioningHandler sets the operation handler for the get bucket versioning operation
 	UserAPIGetBucketVersioningHandler user_api.GetBucketVersioningHandler
 	// AdminAPIGetMaxAllocatableMemHandler sets the operation handler for the get max allocatable mem operation
@@ -694,6 +699,9 @@ func (o *ConsoleAPI) Validate() error {
 	if o.UserAPIGetBucketReplicationHandler == nil {
 		unregistered = append(unregistered, "user_api.GetBucketReplicationHandler")
 	}
+	if o.UserAPIGetBucketRetentionConfigHandler == nil {
+		unregistered = append(unregistered, "user_api.GetBucketRetentionConfigHandler")
+	}
 	if o.UserAPIGetBucketVersioningHandler == nil {
 		unregistered = append(unregistered, "user_api.GetBucketVersioningHandler")
 	}
@@ -1077,6 +1085,10 @@ func (o *ConsoleAPI) initHandlerCache() {
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
+	o.handlers["GET"]["/buckets/{bucket_name}/retention"] = user_api.NewGetBucketRetentionConfig(o.context, o.UserAPIGetBucketRetentionConfigHandler)
+	if o.handlers["GET"] == nil {
+		o.handlers["GET"] = make(map[string]http.Handler)
+	}
 	o.handlers["GET"]["/buckets/{bucket_name}/versioning"] = user_api.NewGetBucketVersioning(o.context, o.UserAPIGetBucketVersioningHandler)
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)

restapi/operations/user_api/get_bucket_retention_config.go

@@ -0,0 +1,90 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2020 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"
+)
+
+// GetBucketRetentionConfigHandlerFunc turns a function with the right signature into a get bucket retention config handler
+type GetBucketRetentionConfigHandlerFunc func(GetBucketRetentionConfigParams, *models.Principal) middleware.Responder
+
+// Handle executing the request and returning a response
+func (fn GetBucketRetentionConfigHandlerFunc) Handle(params GetBucketRetentionConfigParams, principal *models.Principal) middleware.Responder {
+	return fn(params, principal)
+}
+
+// GetBucketRetentionConfigHandler interface for that can handle valid get bucket retention config params
+type GetBucketRetentionConfigHandler interface {
+	Handle(GetBucketRetentionConfigParams, *models.Principal) middleware.Responder
+}
+
+// NewGetBucketRetentionConfig creates a new http.Handler for the get bucket retention config operation
+func NewGetBucketRetentionConfig(ctx *middleware.Context, handler GetBucketRetentionConfigHandler) *GetBucketRetentionConfig {
+	return &GetBucketRetentionConfig{Context: ctx, Handler: handler}
+}
+
+/*GetBucketRetentionConfig swagger:route GET /buckets/{bucket_name}/retention UserAPI getBucketRetentionConfig
+
+Get Bucket's retention config
+
+*/
+type GetBucketRetentionConfig struct {
+	Context *middleware.Context
+	Handler GetBucketRetentionConfigHandler
+}
+
+func (o *GetBucketRetentionConfig) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	route, rCtx, _ := o.Context.RouteInfo(r)
+	if rCtx != nil {
+		r = rCtx
+	}
+	var Params = NewGetBucketRetentionConfigParams()
+
+	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/get_bucket_retention_config_parameters.go

@@ -0,0 +1,89 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2020 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/middleware"
+	"github.com/go-openapi/strfmt"
+)
+
+// NewGetBucketRetentionConfigParams creates a new GetBucketRetentionConfigParams object
+// no default values defined in spec.
+func NewGetBucketRetentionConfigParams() GetBucketRetentionConfigParams {
+
+	return GetBucketRetentionConfigParams{}
+}
+
+// GetBucketRetentionConfigParams contains all the bound params for the get bucket retention config operation
+// typically these are obtained from a http.Request
+//
+// swagger:parameters GetBucketRetentionConfig
+type GetBucketRetentionConfigParams struct {
+
+	// HTTP Request Object
+	HTTPRequest *http.Request `json:"-"`
+
+	/*
+	  Required: true
+	  In: path
+	*/
+	BucketName 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 NewGetBucketRetentionConfigParams() beforehand.
+func (o *GetBucketRetentionConfigParams) BindRequest(r *http.Request, route *middleware.MatchedRoute) error {
+	var res []error
+
+	o.HTTPRequest = r
+
+	rBucketName, rhkBucketName, _ := route.Params.GetOK("bucket_name")
+	if err := o.bindBucketName(rBucketName, rhkBucketName, 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 *GetBucketRetentionConfigParams) 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
+}

restapi/operations/user_api/get_bucket_retention_config_responses.go

@@ -0,0 +1,133 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2020 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"
+)
+
+// GetBucketRetentionConfigOKCode is the HTTP code returned for type GetBucketRetentionConfigOK
+const GetBucketRetentionConfigOKCode int = 200
+
+/*GetBucketRetentionConfigOK A successful response.
+
+swagger:response getBucketRetentionConfigOK
+*/
+type GetBucketRetentionConfigOK struct {
+
+	/*
+	  In: Body
+	*/
+	Payload *models.GetBucketRetentionConfig `json:"body,omitempty"`
+}
+
+// NewGetBucketRetentionConfigOK creates GetBucketRetentionConfigOK with default headers values
+func NewGetBucketRetentionConfigOK() *GetBucketRetentionConfigOK {
+
+	return &GetBucketRetentionConfigOK{}
+}
+
+// WithPayload adds the payload to the get bucket retention config o k response
+func (o *GetBucketRetentionConfigOK) WithPayload(payload *models.GetBucketRetentionConfig) *GetBucketRetentionConfigOK {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the get bucket retention config o k response
+func (o *GetBucketRetentionConfigOK) SetPayload(payload *models.GetBucketRetentionConfig) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *GetBucketRetentionConfigOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(200)
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
+	}
+}
+
+/*GetBucketRetentionConfigDefault Generic error response.
+
+swagger:response getBucketRetentionConfigDefault
+*/
+type GetBucketRetentionConfigDefault struct {
+	_statusCode int
+
+	/*
+	  In: Body
+	*/
+	Payload *models.Error `json:"body,omitempty"`
+}
+
+// NewGetBucketRetentionConfigDefault creates GetBucketRetentionConfigDefault with default headers values
+func NewGetBucketRetentionConfigDefault(code int) *GetBucketRetentionConfigDefault {
+	if code <= 0 {
+		code = 500
+	}
+
+	return &GetBucketRetentionConfigDefault{
+		_statusCode: code,
+	}
+}
+
+// WithStatusCode adds the status to the get bucket retention config default response
+func (o *GetBucketRetentionConfigDefault) WithStatusCode(code int) *GetBucketRetentionConfigDefault {
+	o._statusCode = code
+	return o
+}
+
+// SetStatusCode sets the status to the get bucket retention config default response
+func (o *GetBucketRetentionConfigDefault) SetStatusCode(code int) {
+	o._statusCode = code
+}
+
+// WithPayload adds the payload to the get bucket retention config default response
+func (o *GetBucketRetentionConfigDefault) WithPayload(payload *models.Error) *GetBucketRetentionConfigDefault {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the get bucket retention config default response
+func (o *GetBucketRetentionConfigDefault) SetPayload(payload *models.Error) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *GetBucketRetentionConfigDefault) 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/get_bucket_retention_config_urlbuilder.go

@@ -0,0 +1,116 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2020 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"
+)
+
+// GetBucketRetentionConfigURL generates an URL for the get bucket retention config operation
+type GetBucketRetentionConfigURL struct {
+	BucketName 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 *GetBucketRetentionConfigURL) WithBasePath(bp string) *GetBucketRetentionConfigURL {
+	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 *GetBucketRetentionConfigURL) SetBasePath(bp string) {
+	o._basePath = bp
+}
+
+// Build a url path and query string
+func (o *GetBucketRetentionConfigURL) Build() (*url.URL, error) {
+	var _result url.URL
+
+	var _path = "/buckets/{bucket_name}/retention"
+
+	bucketName := o.BucketName
+	if bucketName != "" {
+		_path = strings.Replace(_path, "{bucket_name}", bucketName, -1)
+	} else {
+		return nil, errors.New("bucketName is required on GetBucketRetentionConfigURL")
+	}
+
+	_basePath := o._basePath
+	if _basePath == "" {
+		_basePath = "/api/v1"
+	}
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
+
+	return &_result, nil
+}
+
+// Must is a helper function to panic when the url builder returns an error
+func (o *GetBucketRetentionConfigURL) 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 *GetBucketRetentionConfigURL) String() string {
+	return o.Must(o.Build()).String()
+}
+
+// BuildFull builds a full url with scheme, host, path and query string
+func (o *GetBucketRetentionConfigURL) BuildFull(scheme, host string) (*url.URL, error) {
+	if scheme == "" {
+		return nil, errors.New("scheme is required for a full url on GetBucketRetentionConfigURL")
+	}
+	if host == "" {
+		return nil, errors.New("host is required for a full url on GetBucketRetentionConfigURL")
+	}
+
+	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 *GetBucketRetentionConfigURL) StringFull(scheme, host string) string {
+	return o.Must(o.BuildFull(scheme, host)).String()
+}

restapi/user_buckets.go

@@ -24,6 +24,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/minio/mc/pkg/probe"
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/replication"
 	"github.com/minio/minio-go/v7/pkg/sse"
@@ -134,6 +135,14 @@ func registerBucketsHandlers(api *operations.ConsoleAPI) {
 		}
 		return user_api.NewSetBucketRetentionConfigOK()
 	})
+	// get bucket retention config
+	api.UserAPIGetBucketRetentionConfigHandler = user_api.GetBucketRetentionConfigHandlerFunc(func(params user_api.GetBucketRetentionConfigParams, session *models.Principal) middleware.Responder {
+		response, err := getBucketRetentionConfigResponse(session, params.BucketName)
+		if err != nil {
+			return user_api.NewGetBucketRetentionConfigDefault(int(err.Code)).WithPayload(err)
+		}
+		return user_api.NewGetBucketRetentionConfigOK().WithPayload(response)
+	})
 }
 
 func getAddBucketReplicationdResponse(session *models.Principal, bucketName string, params *user_api.AddBucketReplicationParams) error {
@@ -636,3 +645,58 @@ func getSetBucketRetentionConfigResponse(session *models.Principal, params user_
 	}
 	return nil
 }
+
+func getBucketRetentionConfig(ctx context.Context, client MinioClient, bucketName string) (*models.GetBucketRetentionConfig, error) {
+	m, v, u, err := client.getBucketObjectLockConfig(ctx, bucketName)
+	if err != nil {
+		errResp := minio.ToErrorResponse(probe.NewError(err).ToGoError())
+		if errResp.Code == "ObjectLockConfigurationNotFoundError" {
+			return &models.GetBucketRetentionConfig{}, nil
+		}
+		return nil, err
+	}
+	var mode models.ObjectRetentionMode
+	var unit models.ObjectRetentionUnit
+	switch *m {
+	case minio.Governance:
+		mode = models.ObjectRetentionModeGovernance
+	case minio.Compliance:
+		mode = models.ObjectRetentionModeCompliance
+	default:
+		return nil, errors.New("invalid retention mode")
+	}
+
+	switch *u {
+	case minio.Days:
+		unit = models.ObjectRetentionUnitDays
+	case minio.Years:
+		unit = models.ObjectRetentionUnitYears
+	default:
+		return nil, errors.New("invalid retention unit")
+	}
+
+	config := &models.GetBucketRetentionConfig{
+		Mode:     mode,
+		Unit:     unit,
+		Validity: int32(*v),
+	}
+	return config, nil
+}
+
+func getBucketRetentionConfigResponse(session *models.Principal, bucketName string) (*models.GetBucketRetentionConfig, *models.Error) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*20)
+	defer cancel()
+	mClient, err := newMinioClient(session)
+	if err != nil {
+		return nil, prepareError(err)
+	}
+	// create a minioClient interface implementation
+	// defining the client to be used
+	minioClient := minioClient{client: mClient}
+
+	config, err := getBucketRetentionConfig(ctx, minioClient, bucketName)
+	if err != nil {
+		return nil, prepareError(err)
+	}
+	return config, nil
+}

restapi/user_buckets_test.go

@@ -42,7 +42,8 @@ var minioGetBucketPolicyMock func(bucketName string) (string, error)
 var minioSetBucketEncryptionMock func(ctx context.Context, bucketName string, config *sse.Configuration) error
 var minioRemoveBucketEncryptionMock func(ctx context.Context, bucketName string) error
 var minioGetBucketEncryptionMock func(ctx context.Context, bucketName string) (*sse.Configuration, error)
-var minioSetObjectLockConfig func(ctx context.Context, bucketName string, mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit) error
+var minioSetObjectLockConfigMock func(ctx context.Context, bucketName string, mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit) error
+var minioGetObjectLockConfigMock func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error)
 
 // Define a mock struct of minio Client interface implementation
 type minioClientMock struct {
@@ -86,7 +87,11 @@ func (mc minioClientMock) getBucketEncryption(ctx context.Context, bucketName st
 }
 
 func (mc minioClientMock) setObjectLockConfig(ctx context.Context, bucketName string, mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit) error {
-	return minioSetObjectLockConfig(ctx, bucketName, mode, validity, unit)
+	return minioSetObjectLockConfigMock(ctx, bucketName, mode, validity, unit)
+}
+
+func (mc minioClientMock) getBucketObjectLockConfig(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+	return minioGetObjectLockConfigMock(ctx, bucketName)
 }
 
 var minioAccountInfoMock func(ctx context.Context) (madmin.AccountInfo, error)
@@ -632,7 +637,7 @@ func Test_SetBucketRetentionConfig(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			minioSetObjectLockConfig = tt.args.mockBucketRetentionFunc
+			minioSetObjectLockConfigMock = tt.args.mockBucketRetentionFunc
 			err := setBucketRetentionConfig(tt.args.ctx, tt.args.client, tt.args.bucketName, tt.args.mode, tt.args.unit, tt.args.validity)
 			if tt.expectedError != nil {
 				fmt.Println(t.Name())
@@ -643,3 +648,120 @@ func Test_SetBucketRetentionConfig(t *testing.T) {
 		})
 	}
 }
+
+func Test_GetBucketRetentionConfig(t *testing.T) {
+	assert := assert.New(t)
+	ctx := context.Background()
+	minClient := minioClientMock{}
+	type args struct {
+		ctx              context.Context
+		client           MinioClient
+		bucketName       string
+		getRetentionFunc func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error)
+	}
+	tests := []struct {
+		name             string
+		args             args
+		expectedResponse *models.GetBucketRetentionConfig
+		expectedError    error
+	}{
+		{
+			name: "Get Bucket Retention Config",
+			args: args{
+				ctx:        ctx,
+				client:     minClient,
+				bucketName: "test",
+				getRetentionFunc: func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+					m := minio.Governance
+					u := minio.Days
+					return &m, swag.Uint(2), &u, nil
+				},
+			},
+			expectedResponse: &models.GetBucketRetentionConfig{
+				Mode:     models.ObjectRetentionModeGovernance,
+				Unit:     models.ObjectRetentionUnitDays,
+				Validity: int32(2),
+			},
+			expectedError: nil,
+		},
+		{
+			name: "Handle Error on minio func",
+			args: args{
+				ctx:        ctx,
+				client:     minClient,
+				bucketName: "test",
+				getRetentionFunc: func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+					return nil, nil, nil, errors.New("error func")
+				},
+			},
+			expectedResponse: nil,
+			expectedError:    errors.New("error func"),
+		},
+		{
+			// Description: if minio return NoSuchObjectLockConfiguration, don't panic
+			// and return empty response
+			name: "Handle NoLock Config error",
+			args: args{
+				ctx:        ctx,
+				client:     minClient,
+				bucketName: "test",
+				getRetentionFunc: func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+					return nil, nil, nil, minio.ErrorResponse{
+						Code:    "ObjectLockConfigurationNotFoundError",
+						Message: "Object Lock configuration does not exist for this bucket",
+					}
+				},
+			},
+			expectedResponse: &models.GetBucketRetentionConfig{},
+			expectedError:    nil,
+		},
+		{
+			name: "Return error on invalid mode",
+			args: args{
+				ctx:        ctx,
+				client:     minClient,
+				bucketName: "test",
+				getRetentionFunc: func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+					m := minio.RetentionMode("other")
+					u := minio.Days
+					return &m, swag.Uint(2), &u, nil
+				},
+			},
+			expectedResponse: nil,
+			expectedError:    errors.New("invalid retention mode"),
+		},
+		{
+			name: "Return error on invalid unit",
+			args: args{
+				ctx:        ctx,
+				client:     minClient,
+				bucketName: "test",
+				getRetentionFunc: func(ctx context.Context, bucketName string) (mode *minio.RetentionMode, validity *uint, unit *minio.ValidityUnit, err error) {
+					m := minio.Governance
+					u := minio.ValidityUnit("otherUnit")
+					return &m, swag.Uint(2), &u, nil
+				},
+			},
+			expectedResponse: nil,
+			expectedError:    errors.New("invalid retention unit"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			minioGetObjectLockConfigMock = tt.args.getRetentionFunc
+			resp, err := getBucketRetentionConfig(tt.args.ctx, tt.args.client, tt.args.bucketName)
+
+			if tt.expectedError != nil {
+				fmt.Println(t.Name())
+				assert.Equal(tt.expectedError.Error(), err.Error(), fmt.Sprintf("getBucketRetentionConfig() error: `%s`, wantErr: `%s`", err, tt.expectedError))
+			} else {
+				assert.Nil(err, fmt.Sprintf("getBucketRetentionConfig() error: %v, wantErr: %v", err, tt.expectedError))
+				if !reflect.DeepEqual(resp, tt.expectedResponse) {
+					t.Errorf("getBucketRetentionConfig() resp: %v, expectedResponse: %v", resp, tt.expectedResponse)
+					return
+				}
+			}
+		})
+	}
+}