dendrite/roomserver/api/perform.go
Kegsay 002fe05a20
Add PerformInvite and refactor how errors get handled (#1158)
* Add PerformInvite and refactor how errors get handled

- Rename `JoinError` to `PerformError`
- Remove `error` from the API function signature entirely. This forces
  errors to be bundled into `PerformError` which makes it easier for callers
  to detect and handle errors. On network errors, HTTP clients will make a
  `PerformError`.

* Unbreak everything; thanks Go!

* Send back JSONResponse according to the PerformError

* Update federation invite code too
2020-06-24 15:06:14 +01:00

118 lines
3.7 KiB
Go

package api
import (
"fmt"
"net/http"
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
type PerformErrorCode int
type PerformError struct {
Msg string
Code PerformErrorCode
}
func (p *PerformError) Error() string {
return fmt.Sprintf("%d : %s", p.Code, p.Msg)
}
// JSONResponse maps error codes to suitable HTTP error codes, defaulting to 500.
func (p *PerformError) JSONResponse() util.JSONResponse {
switch p.Code {
case PerformErrorBadRequest:
return util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.Unknown(p.Msg),
}
case PerformErrorNoRoom:
return util.JSONResponse{
Code: http.StatusNotFound,
JSON: jsonerror.NotFound(p.Msg),
}
case PerformErrorNotAllowed:
return util.JSONResponse{
Code: http.StatusForbidden,
JSON: jsonerror.Forbidden(p.Msg),
}
default:
return util.ErrorResponse(p)
}
}
const (
// PerformErrorNotAllowed means the user is not allowed to invite/join/etc this room (e.g join_rule:invite or banned)
PerformErrorNotAllowed PerformErrorCode = 1
// PerformErrorBadRequest means the request was wrong in some way (invalid user ID, wrong server, etc)
PerformErrorBadRequest PerformErrorCode = 2
// PerformErrorNoRoom means that the room being joined doesn't exist.
PerformErrorNoRoom PerformErrorCode = 3
// PerformErrorNoOperation means that the request resulted in nothing happening e.g invite->invite or leave->leave.
PerformErrorNoOperation PerformErrorCode = 4
)
type PerformJoinRequest struct {
RoomIDOrAlias string `json:"room_id_or_alias"`
UserID string `json:"user_id"`
Content map[string]interface{} `json:"content"`
ServerNames []gomatrixserverlib.ServerName `json:"server_names"`
}
type PerformJoinResponse struct {
// The room ID, populated on success.
RoomID string `json:"room_id"`
// If non-nil, the join request failed. Contains more information why it failed.
Error *PerformError
}
type PerformLeaveRequest struct {
RoomID string `json:"room_id"`
UserID string `json:"user_id"`
}
type PerformLeaveResponse struct {
}
type PerformInviteRequest struct {
RoomVersion gomatrixserverlib.RoomVersion `json:"room_version"`
Event gomatrixserverlib.HeaderedEvent `json:"event"`
InviteRoomState []gomatrixserverlib.InviteV2StrippedState `json:"invite_room_state"`
SendAsServer string `json:"send_as_server"`
TransactionID *TransactionID `json:"transaction_id"`
}
type PerformInviteResponse struct {
// If non-nil, the invite request failed. Contains more information why it failed.
Error *PerformError
}
// PerformBackfillRequest is a request to PerformBackfill.
type PerformBackfillRequest struct {
// The room to backfill
RoomID string `json:"room_id"`
// A map of backwards extremity event ID to a list of its prev_event IDs.
BackwardsExtremities map[string][]string `json:"backwards_extremities"`
// The maximum number of events to retrieve.
Limit int `json:"limit"`
// The server interested in the events.
ServerName gomatrixserverlib.ServerName `json:"server_name"`
}
// PrevEventIDs returns the prev_event IDs of all backwards extremities, de-duplicated in a lexicographically sorted order.
func (r *PerformBackfillRequest) PrevEventIDs() []string {
var prevEventIDs []string
for _, pes := range r.BackwardsExtremities {
prevEventIDs = append(prevEventIDs, pes...)
}
prevEventIDs = util.UniqueStrings(prevEventIDs)
return prevEventIDs
}
// PerformBackfillResponse is a response to PerformBackfill.
type PerformBackfillResponse struct {
// Missing events, arbritrary order.
Events []gomatrixserverlib.HeaderedEvent `json:"events"`
}