Add list objects api (#291)

This includes the basic information of an object

restapi/user_objects.go

@@ -0,0 +1,93 @@
+// 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 restapi
+
+import (
+	"context"
+	"time"
+
+	"github.com/go-openapi/runtime/middleware"
+	"github.com/minio/console/models"
+	"github.com/minio/console/restapi/operations"
+	"github.com/minio/console/restapi/operations/user_api"
+	"github.com/minio/minio-go/v7"
+)
+
+func registerObjectsHandlers(api *operations.ConsoleAPI) {
+	// list objects
+	api.UserAPIListObjectsHandler = user_api.ListObjectsHandlerFunc(func(params user_api.ListObjectsParams, session *models.Principal) middleware.Responder {
+		resp, err := getListObjectsResponse(session, params)
+		if err != nil {
+			return user_api.NewListObjectsDefault(int(err.Code)).WithPayload(err)
+		}
+		return user_api.NewListObjectsOK().WithPayload(resp)
+	})
+}
+
+// listBucketObjects gets an array of objects in a bucket
+func listBucketObjects(ctx context.Context, client MinioClient, bucketName string, prefix string, recursive bool) ([]*models.BucketObject, error) {
+	var objects []*models.BucketObject
+	for lsObj := range client.listObjects(ctx, bucketName, minio.ListObjectsOptions{Prefix: prefix, Recursive: recursive}) {
+		if lsObj.Err != nil {
+			return nil, lsObj.Err
+		}
+		obj := &models.BucketObject{
+			Name:         lsObj.Key,
+			Size:         lsObj.Size,
+			LastModified: lsObj.LastModified.String(),
+			ContentType:  lsObj.ContentType,
+		}
+		objects = append(objects, obj)
+	}
+	return objects, nil
+}
+
+// getListObjectsResponse returns a list of objects
+func getListObjectsResponse(session *models.Principal, params user_api.ListObjectsParams) (*models.ListObjectsResponse, *models.Error) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*20)
+	defer cancel()
+	var prefix string
+	var recursive bool
+	if params.Prefix != nil {
+		prefix = *params.Prefix
+	}
+	if params.Recursive != nil {
+		recursive = *params.Recursive
+	}
+	// bucket request needed to proceed
+	if params.BucketName == "" {
+		return nil, prepareError(errBucketNameNotInRequest)
+	}
+	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}
+
+	objs, err := listBucketObjects(ctx, minioClient, params.BucketName, prefix, recursive)
+	if err != nil {
+		return nil, prepareError(err)
+	}
+
+	resp := &models.ListObjectsResponse{
+		Objects: objs,
+		Total:   int64(len(objs)),
+	}
+	return resp, nil
+}