This repository has been archived by the owner on Feb 15, 2023. It is now read-only.
/
server.go
734 lines (693 loc) · 18.7 KB
/
server.go
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// Copyright 2019 The bigfile Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
// Package rpc is used to implement rpc protocol
package rpc
import (
"bytes"
"context"
"errors"
"io"
"net"
"reflect"
"strconv"
"strings"
"time"
"github.com/bigfile/bigfile/databases"
"github.com/bigfile/bigfile/databases/models"
"github.com/bigfile/bigfile/log"
"github.com/bigfile/bigfile/service"
"github.com/golang/protobuf/ptypes"
"github.com/golang/protobuf/ptypes/wrappers"
"github.com/jinzhu/gorm"
jsoniter "github.com/json-iterator/go"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/peer"
"google.golang.org/grpc/status"
)
var (
isTesting = false
testDbConn *gorm.DB
testRootPath *string
// ErrGetIPFailed represent that get ip failed
ErrGetIPFailed = errors.New("getClientIP failed")
// ErrAppSecret represent appUID and appSecret doesn't match
ErrAppSecret = errors.New("appUID and appSecret doesn't match")
// ErrTokenNotMatchApp represent that the token doesn't belong to this app
ErrTokenNotMatchApp = errors.New("the token doesn't belong to this app")
// ErrTokenSecretWrong the secret of token is wrong
ErrTokenSecretWrong = errors.New("the secret of token is wrong")
// ErrDirShouldNotHasContent represent that create a directory with content
ErrDirShouldNotHasContent = errors.New("the directory should not has content")
)
// Server is used to create a rpc server
type Server struct{}
// getClientIP is used to get client ip from the context
func (s *Server) getClientIP(ctx context.Context) (string, error) {
var (
pr *peer.Peer
ok bool
ipV4 net.IP
tcpAddr *net.TCPAddr
)
if pr, ok = peer.FromContext(ctx); !ok {
return "", ErrGetIPFailed
}
if tcpAddr, ok = pr.Addr.(*net.TCPAddr); ok && tcpAddr != nil {
if tcpAddr.IP.IsLoopback() {
return "127.0.0.1", nil
}
ipV4 = tcpAddr.IP.To4()
if ipV4 == nil {
return tcpAddr.IP.To16().String(), nil
}
return ipV4.String(), nil
}
return pr.Addr.String(), nil
}
// fetchAPP is used to generate *models.APP by app?UID and APPSecret
func fetchAPP(appUID, APPSecret string, db *gorm.DB) (app *models.App, err error) {
app = &models.App{}
err = db.Where("uid = ? and secret = ?", appUID, APPSecret).First(app).Error
if gorm.IsRecordNotFoundError(err) {
err = ErrAppSecret
}
return
}
// generateRequestRecord is used to generate request record
func (s *Server) generateRequestRecord(ctx context.Context, service string, request interface{}, db *gorm.DB) (record *models.Request, err error) {
var (
ip string
requestBody string
requestMD string
)
if ip, err = s.getClientIP(ctx); err != nil {
return
}
if requestBody, err = jsoniter.MarshalToString(request); err != nil {
return record, err
}
if md, ok := metadata.FromIncomingContext(ctx); ok {
if requestMD, err = jsoniter.MarshalToString(md); err != nil {
return record, err
}
}
record = &models.Request{
Protocol: "rpc",
IP: &ip,
Service: &service,
RequestBody: requestBody,
RequestHeader: requestMD,
}
err = db.Create(record).Error
return
}
func (s *Server) tokenResp(token *models.Token) (t *Token) {
t = &Token{Token: token.UID, Path: token.Path, AvailableTimes: int32(token.AvailableTimes)}
if token.IP != nil {
t.Ip = &wrappers.StringValue{Value: *token.IP}
}
if token.ReadOnly == 1 {
t.ReadOnly = true
}
if token.Secret != nil {
t.Secret = &wrappers.StringValue{Value: *token.Secret}
}
if token.ExpiredAt != nil {
ts, _ := ptypes.TimestampProto(*token.ExpiredAt)
t.ExpiredAt = ts
}
if token.DeletedAt != nil {
ts, _ := ptypes.TimestampProto(*token.DeletedAt)
t.DeletedAt = ts
}
return
}
func (s *Server) fileResp(file *models.File, db *gorm.DB) (f *File, err error) {
var path string
if path, err = file.Path(db.Unscoped()); err != nil {
return nil, err
}
f = &File{
Uid: file.UID,
Path: path,
Size: uint64(file.Size),
}
if file.Hidden == 1 {
f.Hidden = true
}
if file.IsDir == 1 {
f.IsDir = true
} else {
if file.Object.ID == 0 {
db.Unscoped().Preload("Object").First(file)
}
f.Hash = &wrappers.StringValue{Value: file.Object.Hash}
f.Ext = &wrappers.StringValue{Value: file.Ext}
}
if file.DeletedAt != nil {
if f.DeletedAt, err = ptypes.TimestampProto(*file.DeletedAt); err != nil {
return f, err
}
}
return f, err
}
func (s *Server) updateRequestRecord(ctx context.Context, request *models.Request, resp interface{}, err error, db *gorm.DB) {
var responseBody string
request.ResponseCode = int(codes.OK)
if err != nil {
responseBody = err.Error()
request.ResponseCode = int(codes.InvalidArgument)
} else {
if responseBody, err = jsoniter.MarshalToString(resp); err != nil {
log.MustNewLogger(nil).Error(err)
return
}
}
request.ResponseBody = responseBody
if err = db.Save(request).Error; err != nil {
log.MustNewLogger(nil).Error(err)
}
}
func getDbConn() (db *gorm.DB) {
if isTesting {
db = testDbConn
} else {
db = databases.MustNewConnection(nil)
}
return
}
// TokenCreate is used to crate token
func (s *Server) TokenCreate(ctx context.Context, req *TokenCreateRequest) (resp *TokenCreateResponse, err error) {
var (
ip *string
db = getDbConn()
app *models.App
path = "/"
record *models.Request
secret *string
readOnly int8
expiredAt *time.Time
tokenCreateSrv *service.TokenCreate
tokenCreateVal interface{}
availableTimes = -1
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "TokenCreate", req, db); err != nil {
return resp, err
}
resp = &TokenCreateResponse{RequestId: record.ID}
defer func() { s.updateRequestRecord(ctx, record, resp, err, db) }()
if app, err = fetchAPP(req.AppUid, req.AppSecret, db); err != nil {
return
}
record.AppID = &app.ID
if s := req.GetSecret(); s != nil {
sv := s.GetValue()
secret = &sv
}
if p := req.GetPath(); p != nil {
path = p.GetValue()
}
if i := req.GetIp(); i != nil {
ipv := i.GetValue()
ip = &ipv
}
if r := req.ReadOnly; r != nil && r.GetValue() {
readOnly = 1
}
if e := req.GetExpiredAt(); e != nil {
seconds := req.ExpiredAt.GetSeconds()
nsec := req.ExpiredAt.GetNanos()
if seconds != 0 {
exp := time.Unix(seconds, int64(nsec))
expiredAt = &exp
}
}
if a := req.GetAvailableTimes(); a != nil {
availableTimes = int(a.GetValue())
}
tokenCreateSrv = &service.TokenCreate{
BaseService: service.BaseService{
DB: db,
},
IP: ip,
App: app,
Path: path,
Secret: secret,
ReadOnly: readOnly,
ExpiredAt: expiredAt,
AvailableTimes: availableTimes,
}
if err = tokenCreateSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if tokenCreateVal, err = tokenCreateSrv.Execute(ctx); err != nil {
return
}
resp.Token = s.tokenResp(tokenCreateVal.(*models.Token))
return resp, nil
}
// TokenUpdate is used to update some token
func (s *Server) TokenUpdate(ctx context.Context, req *TokenUpdateRequest) (resp *TokenUpdateResponse, err error) {
var (
ip *string
db = getDbConn()
app *models.App
path *string
secret *string
token *models.Token
record *models.Request
readOnly *int8
expiredAt *time.Time
tokenUpdateSrv *service.TokenUpdate
tokenUpdateVal interface{}
availableTimes *int
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "TokenUpdate", req, db); err != nil {
return resp, err
}
resp = &TokenUpdateResponse{RequestId: record.ID}
defer func() { s.updateRequestRecord(ctx, record, resp, err, db) }()
if app, err = fetchAPP(req.AppUid, req.AppSecret, db); err != nil {
return
}
record.AppID = &app.ID
if token, err = models.FindTokenByUID(req.Token, db); err != nil {
return
}
if token.AppID != app.ID {
return resp, ErrTokenNotMatchApp
}
if s := req.GetSecret(); s != nil {
sv := s.GetValue()
secret = &sv
}
if p := req.GetPath(); p != nil {
pv := p.GetValue()
path = &pv
}
if i := req.GetIp(); i != nil {
ipv := i.GetValue()
ip = &ipv
}
if r := req.ReadOnly; r != nil && r.GetValue() {
ro := int8(1)
readOnly = &ro
}
if e := req.GetExpiredAt(); e != nil {
seconds := req.ExpiredAt.GetSeconds()
nsec := req.ExpiredAt.GetNanos()
if seconds != 0 {
exp := time.Unix(seconds, int64(nsec))
expiredAt = &exp
}
}
if a := req.GetAvailableTimes(); a != nil {
av := int(a.GetValue())
availableTimes = &av
}
tokenUpdateSrv = &service.TokenUpdate{
BaseService: service.BaseService{DB: db},
Token: token.UID,
IP: ip,
Path: path,
Secret: secret,
ReadOnly: readOnly,
ExpiredAt: expiredAt,
AvailableTimes: availableTimes,
}
if err = tokenUpdateSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if tokenUpdateVal, err = tokenUpdateSrv.Execute(ctx); err != nil {
return
}
resp.Token = s.tokenResp(tokenUpdateVal.(*models.Token))
return resp, nil
}
// TokenDelete is used to delete some tokens
func (s *Server) TokenDelete(ctx context.Context, req *TokenDeleteRequest) (resp *TokenDeleteResponse, err error) {
var (
db = getDbConn()
app *models.App
token *models.Token
record *models.Request
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "TokenDelete", req, db); err != nil {
return resp, err
}
resp = &TokenDeleteResponse{RequestId: record.ID}
if app, err = fetchAPP(req.AppUid, req.AppSecret, db); err != nil {
return
}
record.AppID = &app.ID
if token, err = models.FindTokenByUID(req.Token, db); err != nil {
return
}
if token.AppID != app.ID {
return resp, ErrTokenNotMatchApp
}
if err = db.Delete(token).Error; err != nil {
return
}
db.Delete(token)
db.Unscoped().First(token)
resp.Token = s.tokenResp(token)
return
}
func (s *Server) fetchToken(t string, secret *wrappers.StringValue, db *gorm.DB) (token *models.Token, err error) {
if token, err = models.FindTokenByUID(t, db); err != nil {
return nil, err
}
if token.Secret != nil {
if secret == nil || secret.GetValue() != *token.Secret {
return nil, ErrTokenSecretWrong
}
}
return token, nil
}
// FileCreate is used to upload file in a stream
func (s *Server) FileCreate(stream FileCreate_FileCreateServer) (err error) {
var (
db = getDbConn()
ctx = stream.Context()
req *FileCreateRequest
resp *FileCreateResponse
token *models.Token
record *models.Request
previousToken string
tokenHasChecked bool
fileCreateSrv *service.FileCreate
fileCreateVal interface{}
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
for {
handler := func() (err error) {
if req, err = stream.Recv(); err != nil {
return
}
content := req.Content
req.Content = nil
if record, err = s.generateRequestRecord(ctx, "FileCreate", req, db); err != nil {
return
}
req.Content = content
resp = &FileCreateResponse{RequestId: record.ID}
if !tokenHasChecked || previousToken != req.Token {
if token, err = s.fetchToken(req.Token, req.Secret, db); err != nil {
return
}
}
record.AppID = &token.App.ID
record.Token = &token.UID
fileCreateSrv = &service.FileCreate{
BaseService: service.BaseService{DB: db, RootPath: testRootPath},
Token: token,
Path: req.Path,
IP: record.IP,
}
if req.GetCreateDir() {
if req.GetContent() != nil {
return ErrDirShouldNotHasContent
}
} else {
var content []byte
if req.Content != nil {
content = req.Content.GetValue()
}
fileCreateSrv.Reader = bytes.NewReader(content)
}
if req.GetOverwrite() {
fileCreateSrv.Overwrite = 1
}
if req.GetAppend() {
fileCreateSrv.Append = 1
}
if req.GetRename() {
fileCreateSrv.Rename = 1
}
if req.Hidden != nil && req.Hidden.GetValue() {
fileCreateSrv.Hidden = 1
}
if err = fileCreateSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if fileCreateVal, err = fileCreateSrv.Execute(ctx); err != nil {
return
}
if resp.File, err = s.fileResp(fileCreateVal.(*models.File), db); err != nil {
return
}
return stream.Send(resp)
}
if err = handler(); err != nil {
return
}
}
}
// FileUpdate is used to update a file
func (s *Server) FileUpdate(ctx context.Context, req *FileUpdateRequest) (resp *FileUpdateResponse, err error) {
var (
db = getDbConn()
file *models.File
token *models.Token
record *models.Request
fileUpdateSrv *service.FileUpdate
fileUpdateVal interface{}
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "FileUpdate", req, db); err != nil {
return
}
resp = &FileUpdateResponse{RequestId: record.ID}
if token, err = s.fetchToken(req.Token, req.Secret, db); err != nil {
return
}
record.AppID = &token.App.ID
record.Token = &token.UID
if file, err = models.FindFileByUID(req.FileUid, false, db); err != nil {
return
}
var hidden int8
if req.GetHidden() != nil && req.GetHidden().GetValue() {
hidden = 1
}
fileUpdateSrv = &service.FileUpdate{
BaseService: service.BaseService{DB: db},
Token: token,
File: file,
IP: record.IP,
Hidden: &hidden,
Path: &req.Path,
}
if err = fileUpdateSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if fileUpdateVal, err = fileUpdateSrv.Execute(ctx); err != nil {
return
}
if resp.File, err = s.fileResp(fileUpdateVal.(*models.File), db); err != nil {
return
}
return
}
// FileDelete is used yo delete a file or a directory
func (s *Server) FileDelete(ctx context.Context, req *FileDeleteRequest) (resp *FileDeleteResponse, err error) {
var (
db = getDbConn()
file *models.File
token *models.Token
record *models.Request
fileDeleteSrv *service.FileDelete
fileDeleteVal interface{}
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "FileDelete", req, db); err != nil {
return
}
resp = &FileDeleteResponse{RequestId: record.ID}
if token, err = s.fetchToken(req.Token, req.Secret, db); err != nil {
return
}
record.AppID = &token.App.ID
record.Token = &token.UID
if file, err = models.FindFileByUID(req.FileUid, false, db); err != nil {
return
}
fileDeleteSrv = &service.FileDelete{
BaseService: service.BaseService{DB: db},
Token: token,
File: file,
IP: record.IP,
Force: &req.ForceDeleteIfDir,
}
if err = fileDeleteSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if fileDeleteVal, err = fileDeleteSrv.Execute(ctx); err != nil {
return
}
if resp.File, err = s.fileResp(fileDeleteVal.(*models.File), db); err != nil {
return
}
return
}
// FileRead is used to download file
func (s *Server) FileRead(req *FileReadRequest, resp FileRead_FileReadServer) (err error) {
var (
db = getDbConn()
ctx = resp.Context()
file *models.File
token *models.Token
record *models.Request
fileReader io.Reader
fileReadSrv *service.FileRead
fileReadVal interface{}
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "FileRead", req, db); err != nil {
return
}
if token, err = s.fetchToken(req.Token, req.Secret, db); err != nil {
return
}
record.AppID = &token.App.ID
record.Token = &token.UID
if file, err = models.FindFileByUID(req.FileUid, false, db); err != nil {
return
}
if err = db.Model(record).Updates(map[string]interface{}{"appId": record.AppID, "token": record.Token}).Error; err != nil {
return
}
fileReadSrv = &service.FileRead{
BaseService: service.BaseService{DB: db, RootPath: testRootPath},
Token: token,
File: file,
IP: record.IP,
}
if err = fileReadSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if fileReadVal, err = fileReadSrv.Execute(ctx); err != nil {
return
}
fileReader = fileReadVal.(io.Reader)
if err = resp.SendHeader(metadata.New(map[string]string{
"name": file.Name,
"size": strconv.Itoa(file.Size),
"hash": file.Object.Hash,
})); err != nil {
return
}
for {
var chunk = make([]byte, models.ChunkSize)
var readCount int
readCount, err = fileReader.Read(chunk)
if readCount > 0 {
if err = resp.Send(&FileReadResponse{Content: chunk[:readCount]}); err != nil {
return
}
}
if err != nil {
if err == io.EOF {
err = nil
}
return
}
}
}
// DirectoryList is used to list a directory
func (s *Server) DirectoryList(ctx context.Context, req *DirectoryListRequest) (resp *DirectoryListResponse, err error) {
var (
db = getDbConn()
token *models.Token
record *models.Request
dirListSrv *service.DirectoryList
dirListVal interface{}
dirListResp *service.DirectoryListResponse
)
defer func() {
if err != nil {
err = status.Error(codes.InvalidArgument, err.Error())
}
}()
if record, err = s.generateRequestRecord(ctx, "DirectoryList", req, db); err != nil {
return
}
resp = &DirectoryListResponse{RequestId: record.ID}
if token, err = s.fetchToken(req.Token, req.Secret, db); err != nil {
return
}
record.AppID = &token.App.ID
record.Token = &token.UID
dirListSrv = &service.DirectoryList{
BaseService: service.BaseService{DB: db},
Token: token,
IP: record.IP,
SubDir: "/",
Limit: 10,
Offset: 0,
Sort: "-type",
}
if req.GetSubDir() != nil {
dirListSrv.SubDir = req.GetSubDir().GetValue()
}
if req.GetLimit() != nil {
dirListSrv.Limit = int(req.GetLimit().GetValue())
}
if req.GetOffset() != nil {
dirListSrv.Offset = int(req.GetOffset().GetValue())
}
sort := strings.Replace(req.Sort.String(), "Desc", "-", -1)
sort = strings.Replace(sort, "Asc", "", -1)
sort = strings.ToLower(sort)
dirListSrv.Sort = sort
if err = dirListSrv.Validate(); !reflect.ValueOf(err).IsNil() {
return
}
if dirListVal, err = dirListSrv.Execute(ctx); err != nil {
return
}
dirListResp = dirListVal.(*service.DirectoryListResponse)
resp.Total = int32(dirListResp.Total)
resp.Pages = int32(dirListResp.Pages)
resp.Files = make([]*File, len(dirListResp.Files))
for i, f := range dirListResp.Files {
if resp.Files[i], err = s.fileResp(&f, db); err != nil {
return
}
}
return
}