Add download objects api and integrate it with UI (#321)

restapi/operations/console_api.go

@@ -126,6 +126,9 @@ func NewConsoleAPI(spec *loads.Document) *ConsoleAPI {
 		AdminAPIDeleteTenantHandler: admin_api.DeleteTenantHandlerFunc(func(params admin_api.DeleteTenantParams, principal *models.Principal) middleware.Responder {
 			return middleware.NotImplemented("operation admin_api.DeleteTenant has not yet been implemented")
 		}),
+		UserAPIDownloadObjectHandler: user_api.DownloadObjectHandlerFunc(func(params user_api.DownloadObjectParams, principal *models.Principal) middleware.Responder {
+			return middleware.NotImplemented("operation user_api.DownloadObject has not yet been implemented")
+		}),
 		UserAPIGetBucketQuotaHandler: user_api.GetBucketQuotaHandlerFunc(func(params user_api.GetBucketQuotaParams, principal *models.Principal) middleware.Responder {
 			return middleware.NotImplemented("operation user_api.GetBucketQuota has not yet been implemented")
 		}),
@@ -364,6 +367,8 @@ type ConsoleAPI struct {
 	UserAPIDeleteServiceAccountHandler user_api.DeleteServiceAccountHandler
 	// AdminAPIDeleteTenantHandler sets the operation handler for the delete tenant operation
 	AdminAPIDeleteTenantHandler admin_api.DeleteTenantHandler
+	// UserAPIDownloadObjectHandler sets the operation handler for the download object operation
+	UserAPIDownloadObjectHandler user_api.DownloadObjectHandler
 	// UserAPIGetBucketQuotaHandler sets the operation handler for the get bucket quota operation
 	UserAPIGetBucketQuotaHandler user_api.GetBucketQuotaHandler
 	// UserAPIGetBucketReplicationHandler sets the operation handler for the get bucket replication operation
@@ -598,6 +603,9 @@ func (o *ConsoleAPI) Validate() error {
 	if o.AdminAPIDeleteTenantHandler == nil {
 		unregistered = append(unregistered, "admin_api.DeleteTenantHandler")
 	}
+	if o.UserAPIDownloadObjectHandler == nil {
+		unregistered = append(unregistered, "user_api.DownloadObjectHandler")
+	}
 	if o.UserAPIGetBucketQuotaHandler == nil {
 		unregistered = append(unregistered, "user_api.GetBucketQuotaHandler")
 	}
@@ -932,6 +940,10 @@ func (o *ConsoleAPI) initHandlerCache() {
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
+	o.handlers["GET"]["/buckets/{bucket_name}/objects/download"] = user_api.NewDownloadObject(o.context, o.UserAPIDownloadObjectHandler)
+	if o.handlers["GET"] == nil {
+		o.handlers["GET"] = make(map[string]http.Handler)
+	}
 	o.handlers["GET"]["/buckets/{name}/quota"] = user_api.NewGetBucketQuota(o.context, o.UserAPIGetBucketQuotaHandler)
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)

restapi/operations/user_api/download_object.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"
+)
+
+// DownloadObjectHandlerFunc turns a function with the right signature into a download object handler
+type DownloadObjectHandlerFunc func(DownloadObjectParams, *models.Principal) middleware.Responder
+
+// Handle executing the request and returning a response
+func (fn DownloadObjectHandlerFunc) Handle(params DownloadObjectParams, principal *models.Principal) middleware.Responder {
+	return fn(params, principal)
+}
+
+// DownloadObjectHandler interface for that can handle valid download object params
+type DownloadObjectHandler interface {
+	Handle(DownloadObjectParams, *models.Principal) middleware.Responder
+}
+
+// NewDownloadObject creates a new http.Handler for the download object operation
+func NewDownloadObject(ctx *middleware.Context, handler DownloadObjectHandler) *DownloadObject {
+	return &DownloadObject{Context: ctx, Handler: handler}
+}
+
+/*DownloadObject swagger:route GET /buckets/{bucket_name}/objects/download UserAPI downloadObject
+
+Download Object
+
+*/
+type DownloadObject struct {
+	Context *middleware.Context
+	Handler DownloadObjectHandler
+}
+
+func (o *DownloadObject) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	route, rCtx, _ := o.Context.RouteInfo(r)
+	if rCtx != nil {
+		r = rCtx
+	}
+	var Params = NewDownloadObjectParams()
+
+	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/download_object_parameters.go

@@ -0,0 +1,124 @@
+// 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"
+	"github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/validate"
+)
+
+// NewDownloadObjectParams creates a new DownloadObjectParams object
+// no default values defined in spec.
+func NewDownloadObjectParams() DownloadObjectParams {
+
+	return DownloadObjectParams{}
+}
+
+// DownloadObjectParams contains all the bound params for the download object operation
+// typically these are obtained from a http.Request
+//
+// swagger:parameters Download Object
+type DownloadObjectParams struct {
+
+	// HTTP Request Object
+	HTTPRequest *http.Request `json:"-"`
+
+	/*
+	  Required: true
+	  In: path
+	*/
+	BucketName string
+	/*
+	  Required: true
+	  In: query
+	*/
+	Prefix 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 NewDownloadObjectParams() beforehand.
+func (o *DownloadObjectParams) 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)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+// bindBucketName binds and validates parameter BucketName from path.
+func (o *DownloadObjectParams) 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 *DownloadObjectParams) 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
+}

restapi/operations/user_api/download_object_responses.go

@@ -0,0 +1,132 @@
+// 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 (
+	"io"
+	"net/http"
+
+	"github.com/go-openapi/runtime"
+
+	"github.com/minio/console/models"
+)
+
+// DownloadObjectOKCode is the HTTP code returned for type DownloadObjectOK
+const DownloadObjectOKCode int = 200
+
+/*DownloadObjectOK A successful response.
+
+swagger:response downloadObjectOK
+*/
+type DownloadObjectOK struct {
+
+	/*
+	  In: Body
+	*/
+	Payload io.ReadCloser `json:"body,omitempty"`
+}
+
+// NewDownloadObjectOK creates DownloadObjectOK with default headers values
+func NewDownloadObjectOK() *DownloadObjectOK {
+
+	return &DownloadObjectOK{}
+}
+
+// WithPayload adds the payload to the download object o k response
+func (o *DownloadObjectOK) WithPayload(payload io.ReadCloser) *DownloadObjectOK {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the download object o k response
+func (o *DownloadObjectOK) SetPayload(payload io.ReadCloser) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *DownloadObjectOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(200)
+	payload := o.Payload
+	if err := producer.Produce(rw, payload); err != nil {
+		panic(err) // let the recovery middleware deal with this
+	}
+}
+
+/*DownloadObjectDefault Generic error response.
+
+swagger:response downloadObjectDefault
+*/
+type DownloadObjectDefault struct {
+	_statusCode int
+
+	/*
+	  In: Body
+	*/
+	Payload *models.Error `json:"body,omitempty"`
+}
+
+// NewDownloadObjectDefault creates DownloadObjectDefault with default headers values
+func NewDownloadObjectDefault(code int) *DownloadObjectDefault {
+	if code <= 0 {
+		code = 500
+	}
+
+	return &DownloadObjectDefault{
+		_statusCode: code,
+	}
+}
+
+// WithStatusCode adds the status to the download object default response
+func (o *DownloadObjectDefault) WithStatusCode(code int) *DownloadObjectDefault {
+	o._statusCode = code
+	return o
+}
+
+// SetStatusCode sets the status to the download object default response
+func (o *DownloadObjectDefault) SetStatusCode(code int) {
+	o._statusCode = code
+}
+
+// WithPayload adds the payload to the download object default response
+func (o *DownloadObjectDefault) WithPayload(payload *models.Error) *DownloadObjectDefault {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the download object default response
+func (o *DownloadObjectDefault) SetPayload(payload *models.Error) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *DownloadObjectDefault) 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/download_object_urlbuilder.go

@@ -0,0 +1,127 @@
+// 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"
+)
+
+// DownloadObjectURL generates an URL for the download object operation
+type DownloadObjectURL struct {
+	BucketName string
+
+	Prefix 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 *DownloadObjectURL) WithBasePath(bp string) *DownloadObjectURL {
+	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 *DownloadObjectURL) SetBasePath(bp string) {
+	o._basePath = bp
+}
+
+// Build a url path and query string
+func (o *DownloadObjectURL) Build() (*url.URL, error) {
+	var _result url.URL
+
+	var _path = "/buckets/{bucket_name}/objects/download"
+
+	bucketName := o.BucketName
+	if bucketName != "" {
+		_path = strings.Replace(_path, "{bucket_name}", bucketName, -1)
+	} else {
+		return nil, errors.New("bucketName is required on DownloadObjectURL")
+	}
+
+	_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)
+	}
+
+	_result.RawQuery = qs.Encode()
+
+	return &_result, nil
+}
+
+// Must is a helper function to panic when the url builder returns an error
+func (o *DownloadObjectURL) 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 *DownloadObjectURL) String() string {
+	return o.Must(o.Build()).String()
+}
+
+// BuildFull builds a full url with scheme, host, path and query string
+func (o *DownloadObjectURL) BuildFull(scheme, host string) (*url.URL, error) {
+	if scheme == "" {
+		return nil, errors.New("scheme is required for a full url on DownloadObjectURL")
+	}
+	if host == "" {
+		return nil, errors.New("host is required for a full url on DownloadObjectURL")
+	}
+
+	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 *DownloadObjectURL) StringFull(scheme, host string) string {
+	return o.Must(o.BuildFull(scheme, host)).String()
+}