117 lines
3.3 KiB
Go
117 lines
3.3 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sync
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import (
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"context"
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"encoding/json"
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"net/http"
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"strconv"
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"time"
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"github.com/matrix-org/dendrite/syncapi/storage"
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"github.com/matrix-org/dendrite/syncapi/types"
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userapi "github.com/matrix-org/dendrite/userapi/api"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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log "github.com/sirupsen/logrus"
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)
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const defaultSyncTimeout = time.Duration(0)
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const DefaultTimelineLimit = 20
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type filter struct {
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Room struct {
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Timeline struct {
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Limit *int `json:"limit"`
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} `json:"timeline"`
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} `json:"room"`
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}
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// syncRequest represents a /sync request, with sensible defaults/sanity checks applied.
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type syncRequest struct {
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ctx context.Context
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device userapi.Device
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limit int
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timeout time.Duration
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since *types.StreamingToken // nil means that no since token was supplied
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wantFullState bool
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log *log.Entry
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}
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func newSyncRequest(req *http.Request, device userapi.Device, syncDB storage.Database) (*syncRequest, error) {
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timeout := getTimeout(req.URL.Query().Get("timeout"))
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fullState := req.URL.Query().Get("full_state")
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wantFullState := fullState != "" && fullState != "false"
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var since *types.StreamingToken
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sinceStr := req.URL.Query().Get("since")
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if sinceStr != "" {
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tok, err := types.NewStreamTokenFromString(sinceStr)
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if err != nil {
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return nil, err
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}
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since = &tok
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}
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if since == nil {
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tok := types.NewStreamToken(0, 0, nil)
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since = &tok
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}
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timelineLimit := DefaultTimelineLimit
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// TODO: read from stored filters too
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filterQuery := req.URL.Query().Get("filter")
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if filterQuery != "" {
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if filterQuery[0] == '{' {
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// attempt to parse the timeline limit at least
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var f filter
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err := json.Unmarshal([]byte(filterQuery), &f)
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if err == nil && f.Room.Timeline.Limit != nil {
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timelineLimit = *f.Room.Timeline.Limit
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}
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} else {
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// attempt to load the filter ID
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localpart, _, err := gomatrixserverlib.SplitID('@', device.UserID)
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if err != nil {
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util.GetLogger(req.Context()).WithError(err).Error("gomatrixserverlib.SplitID failed")
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return nil, err
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}
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f, err := syncDB.GetFilter(req.Context(), localpart, filterQuery)
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if err == nil {
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timelineLimit = f.Room.Timeline.Limit
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}
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}
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}
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// TODO: Additional query params: set_presence, filter
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return &syncRequest{
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ctx: req.Context(),
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device: device,
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timeout: timeout,
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since: since,
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wantFullState: wantFullState,
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limit: timelineLimit,
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log: util.GetLogger(req.Context()),
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}, nil
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}
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func getTimeout(timeoutMS string) time.Duration {
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if timeoutMS == "" {
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return defaultSyncTimeout
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}
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i, err := strconv.Atoi(timeoutMS)
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if err != nil {
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return defaultSyncTimeout
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}
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return time.Duration(i) * time.Millisecond
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}
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