memos/store/resource.go
Zeng1998 f3090b115d
feat: support local storage (#1383)
* feat: support local storage

* update

* update

* update

* update
2023-03-19 19:37:57 +08:00

389 lines
9.5 KiB
Go

package store
import (
"context"
"database/sql"
"fmt"
"sort"
"strings"
"github.com/usememos/memos/api"
"github.com/usememos/memos/common"
)
// resourceRaw is the store model for an Resource.
// Fields have exactly the same meanings as Resource.
type resourceRaw struct {
ID int
// Standard fields
CreatorID int
CreatedTs int64
UpdatedTs int64
// Domain specific fields
Filename string
Blob []byte
InternalPath string
ExternalLink string
Type string
Size int64
Visibility api.Visibility
LinkedMemoAmount int
}
func (raw *resourceRaw) toResource() *api.Resource {
return &api.Resource{
ID: raw.ID,
// Standard fields
CreatorID: raw.CreatorID,
CreatedTs: raw.CreatedTs,
UpdatedTs: raw.UpdatedTs,
// Domain specific fields
Filename: raw.Filename,
Blob: raw.Blob,
InternalPath: raw.InternalPath,
ExternalLink: raw.ExternalLink,
Type: raw.Type,
Size: raw.Size,
Visibility: raw.Visibility,
LinkedMemoAmount: raw.LinkedMemoAmount,
}
}
func (s *Store) ComposeMemoResourceList(ctx context.Context, memo *api.Memo) error {
resourceList, err := s.FindResourceList(ctx, &api.ResourceFind{
MemoID: &memo.ID,
})
if err != nil {
return err
}
for _, resource := range resourceList {
memoResource, err := s.FindMemoResource(ctx, &api.MemoResourceFind{
MemoID: &memo.ID,
ResourceID: &resource.ID,
})
if err != nil {
return err
}
resource.CreatedTs = memoResource.CreatedTs
resource.UpdatedTs = memoResource.UpdatedTs
}
sort.Slice(resourceList, func(i, j int) bool {
if resourceList[i].CreatedTs != resourceList[j].CreatedTs {
return resourceList[i].CreatedTs < resourceList[j].CreatedTs
}
return resourceList[i].ID < resourceList[j].ID
})
memo.ResourceList = resourceList
return nil
}
func (s *Store) CreateResource(ctx context.Context, create *api.ResourceCreate) (*api.Resource, error) {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return nil, FormatError(err)
}
defer tx.Rollback()
resourceRaw, err := s.createResourceImpl(ctx, tx, create)
if err != nil {
return nil, err
}
if err := tx.Commit(); err != nil {
return nil, FormatError(err)
}
resource := resourceRaw.toResource()
return resource, nil
}
func (s *Store) FindResourceList(ctx context.Context, find *api.ResourceFind) ([]*api.Resource, error) {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return nil, FormatError(err)
}
defer tx.Rollback()
resourceRawList, err := s.findResourceListImpl(ctx, tx, find)
if err != nil {
return nil, err
}
resourceList := []*api.Resource{}
for _, raw := range resourceRawList {
resourceList = append(resourceList, raw.toResource())
}
return resourceList, nil
}
func (s *Store) FindResource(ctx context.Context, find *api.ResourceFind) (*api.Resource, error) {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return nil, FormatError(err)
}
defer tx.Rollback()
list, err := s.findResourceListImpl(ctx, tx, find)
if err != nil {
return nil, err
}
if len(list) == 0 {
return nil, &common.Error{Code: common.NotFound, Err: fmt.Errorf("not found")}
}
resourceRaw := list[0]
resource := resourceRaw.toResource()
return resource, nil
}
func (s *Store) DeleteResource(ctx context.Context, delete *api.ResourceDelete) error {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return FormatError(err)
}
defer tx.Rollback()
if err := deleteResource(ctx, tx, delete); err != nil {
return err
}
if err := vacuum(ctx, tx); err != nil {
return err
}
if err := tx.Commit(); err != nil {
return FormatError(err)
}
return nil
}
func (s *Store) PatchResource(ctx context.Context, patch *api.ResourcePatch) (*api.Resource, error) {
tx, err := s.db.BeginTx(ctx, nil)
if err != nil {
return nil, FormatError(err)
}
defer tx.Rollback()
resourceRaw, err := s.patchResourceImpl(ctx, tx, patch)
if err != nil {
return nil, err
}
if err := tx.Commit(); err != nil {
return nil, FormatError(err)
}
resource := resourceRaw.toResource()
return resource, nil
}
func (s *Store) createResourceImpl(ctx context.Context, tx *sql.Tx, create *api.ResourceCreate) (*resourceRaw, error) {
fields := []string{"filename", "blob", "external_link", "type", "size", "creator_id"}
values := []any{create.Filename, create.Blob, create.ExternalLink, create.Type, create.Size, create.CreatorID}
placeholders := []string{"?", "?", "?", "?", "?", "?"}
if s.profile.IsDev() {
fields = append(fields, "visibility", "internal_path")
values = append(values, create.Visibility, create.InternalPath)
placeholders = append(placeholders, "?", "?")
}
query := `
INSERT INTO resource (
` + strings.Join(fields, ",") + `
)
VALUES (` + strings.Join(placeholders, ",") + `)
RETURNING id, ` + strings.Join(fields, ",") + `, created_ts, updated_ts
`
var resourceRaw resourceRaw
dests := []any{
&resourceRaw.ID,
&resourceRaw.Filename,
&resourceRaw.Blob,
&resourceRaw.ExternalLink,
&resourceRaw.Type,
&resourceRaw.Size,
&resourceRaw.CreatorID,
}
if s.profile.IsDev() {
dests = append(dests, &resourceRaw.Visibility, &resourceRaw.InternalPath)
}
dests = append(dests, []any{&resourceRaw.CreatedTs, &resourceRaw.UpdatedTs}...)
if err := tx.QueryRowContext(ctx, query, values...).Scan(dests...); err != nil {
return nil, FormatError(err)
}
return &resourceRaw, nil
}
func (s *Store) patchResourceImpl(ctx context.Context, tx *sql.Tx, patch *api.ResourcePatch) (*resourceRaw, error) {
set, args := []string{}, []any{}
if v := patch.UpdatedTs; v != nil {
set, args = append(set, "updated_ts = ?"), append(args, *v)
}
if v := patch.Filename; v != nil {
set, args = append(set, "filename = ?"), append(args, *v)
}
if s.profile.IsDev() {
if v := patch.Visibility; v != nil {
set, args = append(set, "visibility = ?"), append(args, *v)
}
}
args = append(args, patch.ID)
fields := []string{"id", "filename", "external_link", "type", "size", "creator_id", "created_ts", "updated_ts"}
if s.profile.IsDev() {
fields = append(fields, "visibility", "internal_path")
}
query := `
UPDATE resource
SET ` + strings.Join(set, ", ") + `
WHERE id = ?
RETURNING ` + strings.Join(fields, ", ")
var resourceRaw resourceRaw
dests := []any{
&resourceRaw.ID,
&resourceRaw.Filename,
&resourceRaw.ExternalLink,
&resourceRaw.Type,
&resourceRaw.Size,
&resourceRaw.CreatorID,
&resourceRaw.CreatedTs,
&resourceRaw.UpdatedTs,
}
if s.profile.IsDev() {
dests = append(dests, &resourceRaw.Visibility, &resourceRaw.InternalPath)
}
if err := tx.QueryRowContext(ctx, query, args...).Scan(dests...); err != nil {
return nil, FormatError(err)
}
return &resourceRaw, nil
}
func (s *Store) findResourceListImpl(ctx context.Context, tx *sql.Tx, find *api.ResourceFind) ([]*resourceRaw, error) {
where, args := []string{"1 = 1"}, []any{}
if v := find.ID; v != nil {
where, args = append(where, "resource.id = ?"), append(args, *v)
}
if v := find.CreatorID; v != nil {
where, args = append(where, "resource.creator_id = ?"), append(args, *v)
}
if v := find.Filename; v != nil {
where, args = append(where, "resource.filename = ?"), append(args, *v)
}
if v := find.MemoID; v != nil {
where, args = append(where, "resource.id in (SELECT resource_id FROM memo_resource WHERE memo_id = ?)"), append(args, *v)
}
fields := []string{"resource.id", "resource.filename", "resource.external_link", "resource.type", "resource.size", "resource.creator_id", "resource.created_ts", "resource.updated_ts"}
if find.GetBlob {
fields = append(fields, "resource.blob")
}
if s.profile.IsDev() {
fields = append(fields, "visibility", "internal_path")
}
query := fmt.Sprintf(`
SELECT
COUNT(DISTINCT memo_resource.memo_id) AS linked_memo_amount,
%s
FROM resource
LEFT JOIN memo_resource ON resource.id = memo_resource.resource_id
WHERE %s
GROUP BY resource.id
ORDER BY resource.id DESC
`, strings.Join(fields, ", "), strings.Join(where, " AND "))
rows, err := tx.QueryContext(ctx, query, args...)
if err != nil {
return nil, FormatError(err)
}
defer rows.Close()
resourceRawList := make([]*resourceRaw, 0)
for rows.Next() {
var resourceRaw resourceRaw
dests := []any{
&resourceRaw.LinkedMemoAmount,
&resourceRaw.ID,
&resourceRaw.Filename,
&resourceRaw.ExternalLink,
&resourceRaw.Type,
&resourceRaw.Size,
&resourceRaw.CreatorID,
&resourceRaw.CreatedTs,
&resourceRaw.UpdatedTs,
}
if find.GetBlob {
dests = append(dests, &resourceRaw.Blob)
}
if s.profile.IsDev() {
dests = append(dests, &resourceRaw.Visibility, &resourceRaw.InternalPath)
}
if err := rows.Scan(dests...); err != nil {
return nil, FormatError(err)
}
resourceRawList = append(resourceRawList, &resourceRaw)
}
if err := rows.Err(); err != nil {
return nil, FormatError(err)
}
return resourceRawList, nil
}
func deleteResource(ctx context.Context, tx *sql.Tx, delete *api.ResourceDelete) error {
where, args := []string{"id = ?"}, []any{delete.ID}
stmt := `DELETE FROM resource WHERE ` + strings.Join(where, " AND ")
result, err := tx.ExecContext(ctx, stmt, args...)
if err != nil {
return FormatError(err)
}
rows, _ := result.RowsAffected()
if rows == 0 {
return &common.Error{Code: common.NotFound, Err: fmt.Errorf("resource not found")}
}
return nil
}
func vacuumResource(ctx context.Context, tx *sql.Tx) error {
stmt := `
DELETE FROM
resource
WHERE
creator_id NOT IN (
SELECT
id
FROM
user
)`
_, err := tx.ExecContext(ctx, stmt)
if err != nil {
return FormatError(err)
}
return nil
}