109 lines
3.6 KiB
Go
109 lines
3.6 KiB
Go
// Copyright 2024 New Vector Ltd.
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// Copyright 2017 Vector Creations Ltd
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//
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// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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// Please see LICENSE files in the repository root for full details.
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package sync
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"math"
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"net/http"
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"strconv"
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"time"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/util"
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"github.com/sirupsen/logrus"
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"github.com/element-hq/dendrite/syncapi/storage"
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"github.com/element-hq/dendrite/syncapi/synctypes"
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"github.com/element-hq/dendrite/syncapi/types"
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userapi "github.com/element-hq/dendrite/userapi/api"
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)
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const defaultSyncTimeout = time.Duration(0)
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const DefaultTimelineLimit = 20
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func newSyncRequest(req *http.Request, device userapi.Device, syncDB storage.Database) (*types.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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since, sinceStr := types.StreamingToken{}, req.URL.Query().Get("since")
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if sinceStr != "" {
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var err error
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since, 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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}
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// Create a default filter and apply a stored filter on top of it (if specified)
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filter := synctypes.DefaultFilter()
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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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// Parse the filter from the query string
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if err := json.Unmarshal([]byte(filterQuery), &filter); err != nil {
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return nil, fmt.Errorf("json.Unmarshal: %w", err)
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}
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} else {
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// Try to load the filter from the database
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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, fmt.Errorf("gomatrixserverlib.SplitID: %w", err)
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}
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if err := syncDB.GetFilter(req.Context(), &filter, localpart, filterQuery); err != nil && err != sql.ErrNoRows {
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util.GetLogger(req.Context()).WithError(err).Error("syncDB.GetFilter failed")
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return nil, fmt.Errorf("syncDB.GetFilter: %w", err)
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}
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}
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}
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// A loaded filter might have overwritten these values,
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// so set them after loading the filter.
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if since.IsEmpty() {
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// Send as much account data down for complete syncs as possible
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// by default, otherwise clients do weird things while waiting
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// for the rest of the data to trickle down.
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filter.AccountData.Limit = math.MaxInt32
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filter.Room.AccountData.Limit = math.MaxInt32
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}
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logger := util.GetLogger(req.Context()).WithFields(logrus.Fields{
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"user_id": device.UserID,
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"device_id": device.ID,
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"since": since,
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"timeout": timeout,
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"limit": filter.Room.Timeline.Limit,
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})
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return &types.SyncRequest{
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Context: req.Context(), //
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Log: logger, //
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Device: &device, //
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Response: types.NewResponse(), // Populated by all streams
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Filter: filter, //
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Since: since, //
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Timeout: timeout, //
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Rooms: make(map[string]string), // Populated by the PDU stream
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WantFullState: wantFullState, //
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MembershipChanges: make(map[string]struct{}), // Populated by the PDU stream
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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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